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1. Validity and Performance of Blood Biomarkers for Alzheimer Disease to Predict Dementia Risk in a Large Clinic-Based Cohort

Author: Planche, Vincent, Bouteloup, Vincent, Pellegrin, Isabelle, Mangin, Jean-Francois, Dubois, Bruno, Ousset, Pierre-Jean, Pasquier, Florence, Blanc, Frédéric, Paquet, Claire, Hanon, Olivier, Bennys, Karim, Ceccaldi, Mathieu, Annweiler, Cédric, Krolak-Salmon, Pierre, Godefroy, Olivier, Wallon, David, Sauvee, Mathilde, Boutoleau-Bretonnière, Claire, Bourdel-Marchasson, Isabelle, Jalenques, Isabelle, Chene, Genevieve, Dufouil, Carole, Université de Bordeaux (UB), Centre Mémoire de Ressources et de Recherches [Bordeaux], CHU Bordeaux [Bordeaux], Bordeaux population health (BPH), Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM), Immunology from Concept and Experiments to Translation (ImmunoConcept), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'immunologie et d'immunogénétique [CHU Bordeaux], Université Paris-Saclay, Institut du Cerveau = Paris Brain Institute (ICM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), INSERM UMR 1287 Département d'hématologie, Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie (ICube), École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Université de Strasbourg (UNISTRA)-Institut National des Sciences Appliquées - Strasbourg (INSA Strasbourg), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Les Hôpitaux Universitaires de Strasbourg (HUS)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Hôpital Lariboisière-Fernand-Widal [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Optimisation thérapeutique en Neuropsychopharmacologie (OPTeN (UMR_S_1144 / U1144)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Groupe hospitalier Broca, Département de neurologie [Montpellier], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [CHU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Université de Montpellier (UM), Institut de Neurosciences des Systèmes (INS), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université d'Angers (UA), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Laboratoire de Psychologie des Pays de la Loire (LPPL), Université d'Angers (UA)-Nantes Université - UFR Lettres et Langages (Nantes Univ - UFR LL), Nantes Université - pôle Humanités, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Humanités, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ), SFR UA 4201 Confluences (CONFLUENCES), Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Hospices Civils de Lyon (HCL), Centre de recherche en neurosciences de Lyon - Lyon Neuroscience Research Center (CRNL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Neurosciences Fonctionnelles et Pathologies - UR UPJV 4559 (LNFP), Université de Picardie Jules Verne (UPJV), CHU Amiens-Picardie, CHU Rouen, Normandie Université (NU), Université de Rouen Normandie (UNIROUEN), Centre Mémoire de Ressources et de Recherche [Grenoble] (CMRR), Centre Hospitalier Universitaire [Grenoble] (CHU), Centre hospitalier universitaire de Nantes (CHU Nantes), Centre de résonance magnétique des systèmes biologiques (CRMSB), Service d'Addictologie et Pathologie Duelles [CHU Clermont-Ferrand], CHU Gabriel Montpied [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Neuro-Psycho Pharmacologie des Systèmes Dopimanégiques sous-corticaux (NPsy-Sydo), CHU Clermont-Ferrand-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), CIC Bordeaux, Université Bordeaux Segalen - Bordeaux 2-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Toulouse [Toulouse], Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université Fédérale Toulouse Midi-Pyrénées, Service Instrumentation Conception Caractérisation (LAAS-I2C), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [Montpellier]-Université de Montpellier (UM), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), and Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Neurology (clinical), [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: Background and ObjectiveBlood biomarkers for Alzheimer disease (AD) have consistently proven to be associated with CSF or PET biomarkers and effectively discriminate AD from other neurodegenerative diseases. Our aim was to test their utility in clinical practice, from a multicentric unselected prospective cohort where patients presented with a large spectrum of cognitive deficits or complaints.MethodsThe MEMENTO cohort enrolled 2,323 outpatients with subjective cognitive complaint (SCC) or mild cognitive impairment (MCI) consulting in 26 French memory clinics. Participants had neuropsychological assessments, MRI, and blood sampling at baseline. CSF sampling and amyloid PET were optional. Baseline blood Aβ42/40 ratio, total tau, p181-tau, and neurofilament light chain (NfL) were measured using a Simoa HD-X analyzer. An expert committee validated incident dementia cases during a 5-year follow-up period.ResultsOverall, 2,277 individuals had at least 1 baseline blood biomarker available (n = 357 for CSF subsample, n = 649 for PET subsample), among whom 257 were diagnosed with clinical AD/mixed dementia during follow-up. All blood biomarkers but total tau were mildly correlated with their equivalence in the CSF (r = 0.33 to 0.46,p< 0.0001) and were associated with amyloid-PET status (p< 0.0001). Blood p181-tau was the best blood biomarker to identify amyloid-PET positivity (area under the curve = 0.74 [95% CI = 0.69; 0.79]). Higher blood and CSF p181-tau and NfL concentrations were associated with accelerated time to AD dementia onset with similar incidence rates, whereas blood Aβ42/40 was less efficient than CSF Aβ42/40. Blood p181-tau alone was the best blood predictor of 5-year AD/mixed dementia risk (c-index = 0.73 [95% CI = 0.69; 0.77]); its accuracy was higher in patients with clinical dementia rating (CDR) = 0 (c-index = 0.83 [95% CI = 0.69; 0.97]) than in patients with CDR = 0.5 (c-index = 0.70 [95% CI = 0.66; 0.74]). A “clinical” reference model (combining demographics and neuropsychological assessment) predicted AD/mixed dementia risk with a c-index = 0.88 [95% CI = 0.86–0.91] and performance increased to 0.90 [95% CI = 0.88; 0.92] when adding blood p181-tau + Aβ42/40. A “research” reference model (clinical model + apolipoprotein E genotype and AD signature on MRI) had a c-index = 0.91 [95% CI = 0.89–0.93] increasing to 0.92 [95% CI = 0.90; 0.93] when adding blood p181-tau + Aβ42/40. Chronic kidney disease and vascular comorbidities did not affect predictive performances.DiscussionIn a clinic-based cohort of patients with SCC or MCI, blood biomarkers may be good hallmarks of underlying pathology but add little to 5-year dementia risk prediction models including traditional predictors.
Published: 2022

2. Solve-NMD in Paris: Project results

Author: Nelson, Isabelle, Demidov, German, Cohen, Enzo, Perrin, Aurélien, Cossée, Mireille, Leturq, France, Nectoux, Juliette, Masson, Cécile, Boland, Anne, Péréon, Yann, Ferrer, Xavier, Sole, Guilhem, Yaou, Rabah Ben, Bonne, Gisèle, Centre de recherche en Myologie – U974 SU-INSERM, Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Laboratoire de Physique des Lasers (LPL), Université Paris 13 (UP13)-Centre National de la Recherche Scientifique (CNRS), Condensat de Bose-Einstein, Université Paris 13 (UP13)-Centre National de la Recherche Scientifique (CNRS)-Université Paris 13 (UP13)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques (LGMR), Université Montpellier 1 (UM1)-IFR3, Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Service de biochimie et de génétique moléculaire [CHU Cochin], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Institut Cochin (IC UM3 (UMR 8104 / U1016)), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Bioinformatics Core Facility (INSERM U1163), Sorbonne Paris Cité-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre National de Génotypage (CNG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Hôtel-Dieu de Nantes, Université de Nantes (UN), Centre investigation clinique - Unité de pharmacologie clinique et d'évaluations thérapeutiques (CIC-UPCET), Assistance Publique - Hôpitaux de Marseille (APHM), and Centre de Reference des Maladies Neuromusculaires - Atlantique Occitanie Caraïbe (CRMN - AOC)
Subjects: Diagnotic Odyssey, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics
Abstract: Communication Orale; International audience
Published: 2023

3. Comparative transcriptomic analysis reveals gene regulation mediated by caspase activity in a chordate organism

Author: Jean-Philippe Chambon, Eric Quéinnec, Anthi Karaiskou, Gabriel Krasovec, Institut de Systématique, Evolution, Biodiversité (ISYEB ), Muséum national d'Histoire naturelle (MNHN)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), National University of Ireland [Galway] (NUI Galway), Centre de Recherche Saint-Antoine (CRSA), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Centre de recherche en Biologie cellulaire de Montpellier (CRBM), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Gestionnaire, HAL Sorbonne Université 5, Centre de Recherche Saint-Antoine (CR Saint-Antoine), Sorbonne Université (SU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Centre de recherche en Biologie Cellulaire (CRBM), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)
Subjects: Ascidians, Cell, Apoptosis, [SDV.BID]Life Sciences [q-bio]/Biodiversity, Cell fate determination, Transcriptome, 03 medical and health sciences, 0302 clinical medicine, Comparative transcriptomics, [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], medicine, Transcriptional regulation, Animals, Ciona intestinalis, Molecular Biology, Caspase, Migration, 030304 developmental biology, Regulation of gene expression, 0303 health sciences, biology, Metamorphosis, QH573-671, Research, Metamorphosis, Biological, Cell Biology, biology.organism_classification, Cell biology, [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology, medicine.anatomical_structure, 030220 oncology & carcinogenesis, Caspases, biology.protein, [SDV.BA.ZI] Life Sciences [q-bio]/Animal biology/Invertebrate Zoology, [SDV.BBM.GTP] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], Cytology
Abstract: Background Apoptosis is a caspase regulated cell death present in all metazoans defined by a conserved set of morphological features. A well-described function of apoptosis is the removal of excessive cells during development and homeostasis. Recent studies have shown an unexpected signalling property of apoptotic cells, affecting cell fate and/or behaviour of neighbouring cells. In contrast to the apoptotic function of cell elimination, this new role of apoptosis is not well understood but seems caspase-dependent. To deepen our understanding of apoptotic functions, it is necessary to work on a biological model with a predictable apoptosis pattern affecting cell fate and/or behaviour. The tunicate Ciona intestinalis has a bi-phasic life cycle with swimming larvae which undergo metamorphosis after settlement. Previously, we have shown that the tail regression step during metamorphosis, characterized by a predictable polarized apoptotic wave, ensures elimination of most tail cells and controls primordial germ cells survival and migration. Results We performed differential transcriptomic analysis between control metamorphosing larvae and larvae treated with the pan-caspase inhibitor Z-VAD-fmk in order to explore the transcriptional control of apoptotic cells on neighbouring cells that survive and migrate. When caspase activity was impaired, genes known to be involved in metamorphosis were downregulated along with other implicated in cell migration and survival molecular pathways. Conclusion We propose these results as a confirmation that apoptotic cells can control surrounding cells fate and as a reference database to explore novel apoptotic functions in animals, including those related to migration and differentiation.
Published: 2021

4. Mechanochemical N-Chlorination Reaction of Hydantoin: In Situ Real-Time Kinetic Study by Powder X-ray Diffraction and Raman Spectroscopy

Author: Francesco Delogu, Sebastian Haferkamp, Torvid Feiler, Maria Carta, Inês C. B. Martins, Franziska Emmerling, Evelina Colacino, Martin-Luther-Universität Halle Wittenberg (MLU), Universita degli Studi di Cagliari [Cagliari], Dipartimento di Ingegneria Meccanica, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), BAM Federal Institute for Materials Research and Testing, Federal Institute for Materials Research and Testing - Bundesanstalt für Materialforschung und -prüfung (BAM), and Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: In situ, Materials science, 010405 organic chemistry, Renewable Energy, Sustainability and the Environment, General Chemical Engineering, Hydantoin, General Chemistry, 010402 general chemistry, Kinetic energy, 01 natural sciences, 0104 chemical sciences, symbols.namesake, chemistry.chemical_compound, chemistry, X-ray crystallography, symbols, [CHIM]Chemical Sciences, Environmental Chemistry, Physical chemistry, Raman spectroscopy, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2021

5. Allosteric modulators enhance agonist efficacy by increasing the residence time of a GPCR in the active state

Author: Emmanuel Margeat, Robert B. Quast, Anne-Marinette Cao, Philippe Rondard, Fataneh Fatemi, Jean-Philippe Pin, Centre de Biochimie Structurale [Montpellier] (CBS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Ecole Polytechnique Fédérale de Lausanne (EPFL), Shahid Beheshti University, Institut de Génomique Fonctionnelle (IGF), Centre National de la Recherche Scientifique (CNRS)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 1 (UM1)-Université de Montpellier (UM), Guerineau, Nathalie C., Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), and Margeat, Emmanuel
Subjects: [SDV.BIO]Life Sciences [q-bio]/Biotechnology, Protein Conformation, cooperativity, [SDV]Life Sciences [q-bio], Gene Expression, General Physics and Astronomy, Molecular neuroscience, insights, Disaccharides, Receptors, Metabotropic Glutamate, taste, 0302 clinical medicine, G protein-coupled receptors, Glucosides, Catalytic Domain, Fluorescence Resonance Energy Transfer, Amino Acids, Receptor, Micelles, 0303 health sciences, Multidisciplinary, Chemistry, Glutamate receptor, Molecular conformation, Recombinant Proteins, Single Molecule Imaging, stabilization, 3. Good health, protein-coupled receptors, [SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biophysics, [SDV] Life Sciences [q-bio], Transmembrane domain, Indans, single-molecule fret, Cholesterol Esters, Allosteric Site, Protein Binding, Agonist, Allosteric modulator, Octoxynol, medicine.drug_class, Science, Gi alpha subunit, Allosteric regulation, mechanism, [SDV.BBM.BP] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biophysics, Glutamic Acid, Diosgenin, Article, General Biochemistry, Genetics and Molecular Biology, Bridged Bicyclo Compounds, 03 medical and health sciences, Single-molecule biophysics, Allosteric Regulation, medicine, [SDV.BBM] Life Sciences [q-bio]/Biochemistry, Molecular Biology, Humans, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, 030304 developmental biology, G protein-coupled receptor, Biphenyl Compounds, Cell Membrane, General Chemistry, Bridged Bicyclo Compounds, Heterocyclic, [SDV.BIO] Life Sciences [q-bio]/Biotechnology, HEK293 Cells, Xanthenes, Metabotropic glutamate receptor, Biophysics, activation, Glycolipids, Protein Multimerization, 030217 neurology & neurosurgery
Abstract: Here, the authors use smFRET to assess the structural dynamics of metabotropic glutamate receptor mGlu2 and show that a positive allosteric modulator or the Gi protein stabilize mGlu2 in the glutamate-induced active state, leading to the full activation of the receptor., Much hope in drug development comes from the discovery of positive allosteric modulators (PAM) that display target subtype selectivity and act by increasing agonist potency and efficacy. How such compounds can allosterically influence agonist action remains unclear. Metabotropic glutamate receptors (mGlu) are G protein-coupled receptors that represent promising targets for brain diseases, and for which PAMs acting in the transmembrane domain have been developed. Here, we explore the effect of a PAM on the structural dynamics of mGlu2 in optimized detergent micelles using single molecule FRET at submillisecond timescales. We show that glutamate only partially stabilizes the extracellular domains in the active state. Full activation is only observed in the presence of a PAM or the G(i) protein. Our results provide important insights on the role of allosteric modulators in mGlu activation, by stabilizing the active state of a receptor that is otherwise rapidly oscillating between active and inactive states.
Published: 2021

6. GNL3 regulates replication origin firing and protects stalled replication forks

Author: Lebdy, Rana, Canut, Marine, Patouillard, Julie, Cadoret, Jean-Charles, Letessier, Anne, Ammar, Josiane, Basbous, Jihane, Urbach, Serge, Miotto, Benoit, Constantinou, Angelos, Abou Merhi, Raghida, Ribeyre, Cyril, Institut de génétique humaine (IGH), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut Jacques Monod (IJM (UMR_7592)), Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut Cochin (IC UM3 (UMR 8104 / U1016)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Infections rétrovirales et signalisation cellulaire (IRSC), Université Montpellier 1 (UM1)-Centre National de la Recherche Scientifique (CNRS), Institut de Génomique Fonctionnelle (IGF), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génétique et physiologie du développement (LGPD), Université de la Méditerranée - Aix-Marseille 2-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université Américaine de Beyrouth, Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Faculty of Medical Sciences [Lebanese University], Lebanese University [Beirut] (LU), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), and Ribeyre, Cyril
Subjects: [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology
Abstract: DNA replication by the replisome requires specific proteins that protect replication forks and so prevent the formation of DNA lesions that may damage the genome. Here, we show that human GNL3/nucleostemin, a GTP-binding protein localized in the nucleolus and the nucleoplasm, is a new component of the replisome. Depletion of GNL3 reduces fork speed but increases replication origin firing. When subjected to replication stress, the nascent DNA of GNL3-depleted cells undergoes nuclease-dependent resection, a source of DNA lesions. Inhibition of origin firing decreases this resection, indicating that the increased replication origin firing seen upon GNL3 depletion mainly accounts for the observed DNA resection. We show that GNL3 and DNA replication initiation factor ORC2 interact in the nucleolus, and that GNL3 regulates ORC2 subnuclear localization. The accumulation of GNL3 in the nucleolus is thus required to limit DNA resection in response to replicative stress, potentially through the regulation of ORC2 functions.
Published: 2022

7. Rapid communication: insights into the role of extracellular vesicles during Auger radioimmunotherapy

Author: Julie Constanzo, Joël Chopineau, Marie Morille, Jihad Karam, Jean-Pierre Pouget, Laurent Gros, Alexandre Pichard, GROS, Laurent, Institut de Recherche en Cancérologie de Montpellier (IRCM - U1194 Inserm - UM), CRLCC Val d'Aurelle - Paul Lamarque-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Institut du Cancer de Montpellier (ICM), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), and Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)
Subjects: [SDV]Life Sciences [q-bio], viruses, medicine.medical_treatment, Targeted radionuclide therapy, exosomes, 03 medical and health sciences, 0302 clinical medicine, In vivo, Bystander effect, medicine, Cytotoxic T cell, Radiology, Nuclear Medicine and imaging, Cytotoxicity, ComputingMilieux_MISCELLANEOUS, radiotherapy, 030304 developmental biology, 0303 health sciences, Radiological and Ultrasound Technology, Chemistry, Melanoma, virus diseases, respiratory system, medicine.disease, Molecular biology, In vitro, Microvesicles, 3. Good health, [SDV] Life Sciences [q-bio], 030220 oncology & carcinogenesis, Radioimmunotherapy, Auger electrons, extracellular vesicles
Abstract: International audience; Purpose: Non-targeted effects, including bystander and systemic effects, play a crucial role during Auger targeted radionuclide therapy. Here, we investigated whether small extracellular vesicles (sEVs) produced by irradiated cells could contribute to the bystander cytotoxic effects in vitro and also to therapeutic efficacy in vivo, after their injection in tumor xenografts.Materials and methods: B16F10 melanoma donor cells were exposed to radiolabeled antibodies (Auger radioimmunotherapy, RIT) for 48 h or to X-rays (donor cells). Then, donor cells were incubated with fresh medium for 2 h to prepare conditioned medium (CM) that was transferred onto recipient cells for bystander effect assessment, or used for sEVs enrichment. Resulting sEVs were incubated in vitro with recipient cells for determining bystander cytotoxicity, or injected in B16F10 melanoma tumors harbored by athymic and C57BL/6 mice.Results: In vitro analysis of bystander cytotoxic effects showed that CM killed about 30-40% of melanoma cells. SEVs isolated from CM contributed to this effect. Moreover, the double-stranded DNA (dsDNA) content was increased in sEVs isolated from CM of exposed cells compared to control (not exposed), but the difference was significant only for the X-ray condition. These results were supported by immunodetection of cytosolic dsDNA in donor cells, a phenomenon that should precede dsDNA enrichment in sEVs. However, sEVs cytotoxicity could not be detected in vivo. Indeed, in athymic and in immunocompetent mice that received four intratumoral injections of sEVs (1/day), tumor growth was not delayed compared with untreated controls. Tumor growth was slightly (not significantly) delayed in immunocompetent mice treated with sEVs from X-ray-exposed cells, and significantly with sEVs purified from CM collected after 48 h of incubation. These results highlight the need to determine the optimal conditions, including radiation absorbed dose and sEVs collection time, to obtain the strongest cytotoxic effects.Conclusions: This study demonstrates that sEVs could play a role during Auger RIT through bystander effects in vitro. No systemic effects were observed in vivo, under our experimental conditions. However, X-rays experiments showed that sEVs collection time might be influencing the nature of sEVs, a parameter that should also be investigated during Auger RIT.
Published: 2021

8. Efficacy, safety and patient reported outcomes in patients with active relapsing multiple sclerosis treated with ocrelizumab: Final results from the PRO-MSACTIVE study

Author: Eric Manchon, David Laplaud, Sandra Vukusic, Pierre Labauge, Thibault Moreau, Gisela Kobelt, Jean-Marie Grouin, Marie Lotz, David Pau, Lebrun Frenay Christine, Centre Hospitalier de Gonesse, Team 5 : Neuroinflammation, mechanisms, therapeutic options (NEMO) (U1064 Inserm - CR2TI), Centre de Recherche en Transplantation et Immunologie - Center for Research in Transplantation and Translational Immunology (U1064 Inserm - CR2TI), Institut National de la Santé et de la Recherche Médicale (INSERM)-Nantes Université - UFR de Médecine et des Techniques Médicales (Nantes Univ - UFR MEDECINE), Nantes Université - pôle Santé, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Santé, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Nantes Université - UFR de Médecine et des Techniques Médicales (Nantes Univ - UFR MEDECINE), Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ), Nantes Université (Nantes Univ), Service de Neurologie [CHU Nantes], Centre hospitalier universitaire de Nantes (CHU Nantes)-Hôpital Nord Laënnec, Centre d’Investigation Clinique de Nantes (CIC Nantes), Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre hospitalier universitaire de Nantes (CHU Nantes), Centre de recherche en neurosciences de Lyon - Lyon Neuroscience Research Center (CRNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Hôpital neurologique et neurochirurgical Pierre Wertheimer [CHU - HCL], Hospices Civils de Lyon (HCL), Fondation Eugène Devic EDMUS, Département de neurologie [Montpellier], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [Montpellier]-Université de Montpellier (UM), Hôpital Gui de Chauliac, Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), European Health Economics [Stockholm, Sweden] (EHE), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Roche France, Hôpital Pasteur [Nice] (CHU), CRCSEP Nice Hopital Pasteur, Unité de Recherche Clinique de la Côte d’Azur [Nice] (URRIS UR2CA), Université Côte d'Azur (UCA), and KERANDEL-DION, Céline
Subjects: [SDV] Life Sciences [q-bio], Neurology, [SDV]Life Sciences [q-bio], Relapsing multiple sclerosis, Neurology (clinical), General Medicine, Ocrelizumab, Phase IV
Abstract: International audience; Background: Ocrelizumab, a humanized anti-CD20 monoclonal antibody, has been approved in Europe for the treatment of adult patients with active relapsing multiple sclerosis (RMS) and primary progressive multiple sclerosis (PPMS), on the basis of previous phase III studies. However, limited data were available on ocrelizumab efficacy in RMS according to the Lublin definition of activity (clinical and/or imaging features) used in the current drug label. The PRO-MSACTIVE study was thus designed to provide additional data on ocrelizumab efficacy according to this definition, and also on safety and patient reported outcomes (PROs).Methods: PRO-MSACTIVE is a national, multicenter, open-label, single-arm phase IV French study, conducted in patients with active RMS (relapsing-remitting multiple sclerosis, RRMS, or secondary progressive multiple sclerosis, SPMS). The primary endpoint, which was assessed at week (W) 48, was defined as the proportion of patients free of disease activity (defined by no relapses and no T1 gadolinium-enhancing nor new and/or enlarging T2 lesions using brain MRI). Disease activity, disability and PROs using 6 questionnaires for disease severity, quality of life, impact on work productivity, and treatment satisfaction were described at W24 and W48. Adverse events were described until W72.Results: Among the 422 analyzed patients (RRMS: 376, SPMS: 46), 63.3% (95% CI [58.5%; 67.9%]) were free of disease activity at W48 (RRMS: 62.2% [57.1%; 67.2%], SPMS: 71.7% [56.5%; 84.0%]). A total of 358 patients (84.8%; RRMS: 84.6%, SPMS: 87.0%) were relapse-free up to W48, and the overall adjusted annualized relapse rate was 0.14 (RRMS: 0.15, SPMS: 0.09). Overall, 67.8% of patients (RRMS: 66.8%, SPMS: 76.1%) had no evidence of MRI activity (no T1 gadolinium-enhancing lesions [83.4%] and no new/enlarging T2 lesions [75.1%]); 58.5% of patients (RRMS: 57.7%, SPMS: 65.2%) achieved No Evidence of Disease Activity (NEDA: no relapses, no confirmed disability progression, and no MRI activity) at W48. All PRO scores were stable between the first dose of ocrelizumab and W48 and better outcomes were seen for patients having an EDSS score ≥4. Overall, 89.3% of patients reported adverse events, 62.3% adverse events assessed as related to ocrelizumab, and 8.5% serious adverse events. No serious infusion-related reactions, opportunistic infections, progressive multifocal leukoencephalopathy, nor deaths were reported. No new safety signal was identified.Conclusion: These data confirm the efficacy of ocrelizumab in a pragmatic setting and its favorable benefit-risk profile in patients with RMS. (ClinicalTrials.gov identifier: NCT03589105; EudraCT identifier: 2018-000780-91).
Published: 2022

9. Predominance of BRCA2 Mutation and Estrogen Receptor Positivity in Unselected Breast Cancer with BRCA1 or BRCA2 Mutation

Author: Pujol, Pascal, Yauy, Kevin, Coffy, Amandine, Duforet-Frebourg, Nicolas, Gabteni, Sana, Daurès, Jean-Pierre, Penault-Llorca, Frédérique, Thomas, Frédéric, Hughes, Kevin, Hughes, Kevin A., Turnbull, Clare, Galibert, Virginie, Rideau, Chloé, Corsini, Carole, Collet, Laetitia, You, Benoit, Geneviève, David, Philippe, Nicolas, Service de Biopathologie [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Université Montpellier 1 - UFR de Médecine (UM1 Médecine), Université Montpellier 1 (UM1), Département de génétique médicale, maladies rares et médecine personnalisée [CHRU Montpellier], Aide à la Décision pour une Médecine Personnalisé - Laboratoire de Biostatistique, Epidémiologie et Recherche Clinique - EA 2415 (AIDMP), Université Montpellier 1 (UM1)-Université de Montpellier (UM), Biologie Computationnelle et Mathématique (TIMC-IMAG-BCM), Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525 (TIMC-IMAG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), CHU Montpellier, Imagerie Moléculaire et Stratégies Théranostiques (IMoST), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Centre Jean Perrin [Clermont-Ferrand] (UNICANCER/CJP), UNICANCER, Savoirs, ENvironnement et Sociétés (SENS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université Paul-Valéry - Montpellier 3 (UPVM)-Institut de Recherche pour le Développement (IRD), The institute of cancer research [London], Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Hospices Civils de Lyon (HCL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, Service de génétique médicale [Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Arnaud de Villeneuve, Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), REMEA, Centre de Recherches Ecologiques et Evolutives sur le Cancer (MIVEGEC-CREEC), Processus Écologiques et Évolutifs au sein des Communautés (PEEC), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM)-Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM), Institute for Advanced Biosciences / Institut pour l'Avancée des Biosciences (Grenoble) (IAB), Centre Hospitalier Universitaire [Grenoble] (CHU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Etablissement français du sang - Auvergne-Rhône-Alpes (EFS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université de Montpellier (UM), Institut Desbrest de santé publique (IDESP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Clermont Auvergne (UCA), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM), Harvard Medical School [Boston] (HMS), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), This work was commissioned and supported by the French Society of Predictive andPersonalized Medicine, an independent nonprofit learned society (grant SFMPP-20-C3)., SeqOne Genomics [Montpellier], Aésio Santé [Paris], and COLO, Mouniati
Subjects: Cancer Research, breast cancer, [SDV.CAN] Life Sciences [q-bio]/Cancer, Oncology, [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], BRCA1, BRCA2, estrogen receptor, [SDV.BBM.GTP] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], [SDV.CAN]Life Sciences [q-bio]/Cancer
Abstract: Background: Poly(ADP-ribose) polymerase 1 inhibitor (PARPi) agents can improve progression-free survival of patients with breast cancer who carry a germline BRCA1 or BRCA2 pathogenic or likely pathogenic variant (gBRCA) in both the metastatic and adjuvant setting. Therefore, we need to reassess the frequency of gBRCA1 and gBRCA2 in order to redefine the criteria for women and tumor phenotype that should be tested. Objective: We studied the relative distribution of gBRCA1 and gBRCA2 in unselected populations of women with breast cancer and in unaffected individuals. We also analyzed the proportion of estrogen receptor (ER)-positive (ER+) tumors in unselected breast cancer patients with gBRCA. Design: We performed a meta-analysis of studies of unselected breast cancer that analyzed the relative contribution of gBRCA1 versus gBRCA2 among unselected breast cancer cases in gBRCA carriers. We then performed a meta-analysis of gBRCA carriage in unaffected individuals from genome-wide population studies, the gnomAD databank, and case–control studies. Results: The BRCA2 gene was involved in 54% of breast cancer cases in unselected patients with gBRCA (n = 108,699) and 60% of unaffected individuals (n = 238,973) as compared with 38% of the largest gBRCA family cohort (n = 29,700). The meta-analysis showed that 1.66% (95% CI 1.08–2.54) and 1.71% (95% CI 1.33–2.2) of unselected breast cancer patients carried gBRCA1 and gBRCA2, respectively. In a population of unaffected individuals, the frequency of heterozygosity for gBRCA1 and gBRCA2 was estimated at 1/434 and 1/288, respectively. Nearly 0.5% of unaffected individuals in the studied populations carried a gBRCA. Carriage of a gBRCA was 2.5% for patients with ER+ tumors (95% CI 1.5–4.1) and 5.7% (95% CI 5.1–6.2) for those with ER- tumors. Overall, 58% of breast tumors occurring in women carrying a gBRCA were ER+ (n = 86,870). Conclusions: This meta-analysis showed that gBRCA2 carriage is predominant in unselected breast cancer patients and unaffected individuals. ER+ tumors among women with gBRCA-related breast cancer are predominant and have been underestimated. Because PARPi agents improve progression-free survival with ER+ gBRCA breast cancer in most clinical trials, breast cancer should be considered, regardless of ER status, for BRCA1/2 screening for therapeutic purposes.
Published: 2022

10. PUCHI represses early meristem formation in developing lateral roots of Arabidopsis thaliana

Author: Bellande, Kevin, Trinh, Duy-Chi, Gonzalez, Anne-Alicia, Dubois, Emeric, Petitot, Anne-Sophie, Lucas, Mikaël, Champion, Antony, Gantet, Pascal, Laplaze, Laurent, Guyomarc’h, Soazig, Diversité, adaptation, développement des plantes (UMR DIADE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM), Université de Montpellier (UM), Institut de Génomique Fonctionnelle - Montpellier GenomiX (IGF MGX), Institut de Génomique Fonctionnelle (IGF), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-BioCampus (BCM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), ROSSI, Sabine, Reproduction et développement des plantes (RDP), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), and ANR-17-CE13-0004,NewRoot,Propriétés du réseau de gènes contrôlant la formation des nouvelles racines latérales chez les plantes(2017)
Subjects: [SDE] Environmental Sciences, patterning, PLETHORA, Indoleacetic Acids, Arabidopsis Proteins, organogenesis, Arabidopsis, PUCHI, Plant Roots, meristem, lateral root development, cytokinin, Gene Expression Regulation, Plant, [SDE]Environmental Sciences, auxin, Transcription Factors
Abstract: International audience; Lateral root organogenesis is a key process in the development of a plant’s root system and its adaptation to the environment. During lateral root formation, an early phase of cell proliferation first produces a four-cell-layered primordium, and only from this stage onwards is a root meristem-like structure, expressing root stem cell niche marker genes, being established in the developing organ. Previous studies reported that the gene regulatory network controlling lateral root formation is organized into two subnetworks whose mutual inhibition may contribute to organ patterning. PUCHI encodes an AP2/ERF transcription factor expressed early during lateral root primordium development and required for correct lateral root formation. To dissect the molecular events occurring during this early phase, we generated time-series transcriptomic datasets profiling lateral root development in puchi-1 mutants and wild types. Transcriptomic and reporter analyses revealed that meristem-related genes were expressed ectopically at early stages of lateral root formation in puchi-1 mutants. We conclude that, consistent with the inhibition of genetic modules contributing to lateral root development, PUCHI represses ectopic establishment of meristematic cell identities at early stages of organ development. These findings shed light on gene network properties that orchestrate correct timing and patterning during lateral root formation.
Published: 2022

11. Pitolisant for Residual Excessive Daytime Sleepiness in OSA Patients Adhering to CPAP

Author: Jean-Louis Pépin, Ognian Georgiev, Rumen Tiholov, Valérie Attali, Johan Verbraecken, Bertien Buyse, Markku Partinen, Ingo Fietze, Georgi Belev, Dejan Dokic, Renaud Tamisier, Patrick Lévy, Isabelle Lecomte, Jeanne-Marie Lecomte, Jean-Charles Schwartz, Yves Dauvilliers, Valerie Attali, Patrice Bourgin, Marie D’Ortho, Frederic Gagnadoux, Jean Claude Meurice, Xuan Lan Nguyen, Katrien Hertegonne, Daniel Rodenstein, Jan Ovesen, Soren Berg, Olli Polo, Tarja Saaresranta, Jan Anders Hedner, Yuksel Peker, W.J. Randerath, Elke Rössner, Diego Garcia Borreguero, Francisco Javier Puertas Cuesta, Joaquim Duran-Cantolla, Ferran Barbe, Dra Odile Romero, Yavor Ivanov, Hristo Metev, Diana Petkova, Merita Ismajli Marku, Hypoxie : Physiopathologie Respiratoire et Cardiovasculaire (HP2), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Grenoble Alpes (UGA), CHU Grenoble, University Hospital Alexandrovska, St. Ivan Rilski University Hospital, Neurophysiologie Respiratoire Expérimentale et Clinique, Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Service des Pathologies du sommeil [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Antwerp University Hospital [Edegem] (UZA), University Hospitals Leuven [Leuven], Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven), Helsinki Sleep Clinic [Helsinki], University of Helsinki, Charité - UniversitätsMedizin = Charité - University Hospital [Berlin], St. George Hospital Medical University [Plovidv], University Hospital Center 'Mother Teresa', Bioprojet, Département de neurologie [Montpellier], Hôpital Gui de Chauliac [Montpellier]-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Université Montpellier 1 (UM1)-Université de Montpellier (UM), Neuropsychiatrie : recherche épidémiologique et clinique (PSNREC), and Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)
Subjects: Pulmonary and Respiratory Medicine, medicine.medical_specialty, Pitolisant, Population, Excessive daytime sleepiness, Critical Care and Intensive Care Medicine, Placebo, [SDV.MHEP.PSR]Life Sciences [q-bio]/Human health and pathology/Pulmonology and respiratory tract, law.invention, OSA, 03 medical and health sciences, chemistry.chemical_compound, residual excessive daytime sleepiness, 0302 clinical medicine, Randomized controlled trial, CPAP, law, medicine, 030212 general & internal medicine, education, pitolisant, education.field_of_study, Intention-to-treat analysis, business.industry, Epworth Sleepiness Scale, respiratory tract diseases, 3. Good health, 030228 respiratory system, Apnea–hypopnea index, chemistry, Physical therapy, medicine.symptom, Cardiology and Cardiovascular Medicine, business
Abstract: International audience; Background: Excessive daytime sleepiness (EDS) in individuals with OSA syndrome persisting despite good adherence to CPAP is a disabling condition. Pitolisant is a selective histamine H3-receptor antagonist with wake-promoting effects.Research question: Is pitolisant effective and safe for reducing daytime sleepiness in individuals with moderate to severe OSA adhering to CPAP treatment but experiencing residual EDS?Study design and methods: In a multicenter, double-blind, randomized (3:1), placebo-controlled, parallel-design trial, pitolisant was titrated individually at up to 20 mg/day and taken over 12 weeks. The primary end point was change in the Epworth Sleepiness Scale (ESS) score in the intention-to-treat population. Key secondary end points were maintenance of wakefulness assessed by the Oxford Sleep Resistance Test, Clinical Global Impressions scale of severity, the patient's global opinion, EuroQoL quality-of-life questionnaire score, Pichot fatigue questionnaire score, and safety.Results: Two hundred forty-four OSA participants (82.8% men; mean age, 53.1 years; mean Apnea Hypopnea Index with CPAP, 4.2/h; baseline ESS score, 14.7) were randomized to pitolisant (n = 183) or placebo (n = 61). ESS significantly decreased with pitolisant compared with placebo (-2.6; 95% CI, -3.9 to -1.4; P < .001), and the rate of responders to therapy (ESS ≤ 10 or change in ESS ≥ 3) was significantly higher with pitolisant (71.0% vs 54.1%; P = .013). Adverse event occurrence (mainly headache and insomnia) was higher in the pitolisant group compared with the placebo group (47.0% and 32.8%, respectively; P = .03). No cardiovascular or other significant safety concerns were reported.Interpretation: Pitolisant used as adjunct to CPAP therapy for OSA with residual sleepiness despite good CPAP adherence significantly reduced subjective and objective sleepiness and improved participant-reported outcomes and physician-reported disease severity.
Published: 2021

12. MRI characteristics of MOG-Ab associated disease in adults: An update

Author: F. Durand-Dubief, Mikael Cohen, François Cotton, Elisabeth Maillart, Natalia Shor, Romain Marignier, Bertrand Bourre, Xavier Ayrignac, A Cobo Calvo, David-Axel Laplaud, C. Papeix, Kumaran Deiva, Jonathan Ciron, Nicolas Collongues, Bertrand Audoin, Hélène Zéphir, Romain Deschamps, Sandra Vukusic, Aurélie Ruet, Sorbonne Université - Faculté de Médecine (SU FM), Sorbonne Université (SU), Hôpital de la Fondation Ophtalmologique Adolphe de Rothschild [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle (MIRCEM), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Centre de résonance magnétique biologique et médicale (CRMBM), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), i-SEP (i-SEP), Hôpital neurologique et neurochirurgical Pierre Wertheimer [CHU - HCL], Hospices Civils de Lyon (HCL), RMN et optique : De la mesure au biomarqueur, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Neurocentre Magendie : Physiopathologie de la Plasticité Neuronale (U1215 Inserm - UB), Université de Bordeaux (UB)-Institut François Magendie-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Bordeaux [Bordeaux], Département de neurologie [Montpellier], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [CHU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Université de Montpellier (UM), Harvard Medical School [Boston] (HMS), Rutgers New Jersey Medical School (NJMS), Rutgers University System (Rutgers), Centre hospitalier universitaire de Nantes (CHU Nantes), Infectious Diseases Models for Innovative Therapies (IDMIT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CHU Rouen, Normandie Université (NU), Assistance Publique - Hôpitaux de Marseille (APHM), CHU Strasbourg, Centre de recherche en neurosciences de Lyon - Lyon Neuroscience Research Center (CRNL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Lyon, the NOMADMUS study group, and Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [Montpellier]-Université de Montpellier (UM)
Subjects: Adult, Pathology, medicine.medical_specialty, [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, Myelitis, Optic neuritis, Disease, Imaging, Myelin oligodendrocyte glycoprotein, 03 medical and health sciences, 0302 clinical medicine, medicine, Humans, Myelin Oligodendrocyte Glycoprotein, 030212 general & internal medicine, Autoantibodies, Aquaporin 4, Neuromyelitis optica, medicine.diagnostic_test, biology, business.industry, Multiple sclerosis, Neuromyelitis Optica, Magnetic resonance imaging, medicine.disease, Magnetic Resonance Imaging, Neurology, biology.protein, Myelin-Oligodendrocyte Glycoprotein, Neurology (clinical), Differential diagnosis, business, Aquaporin-4, 030217 neurology & neurosurgery
Abstract: International audience; Our knowledge of the radiological spectrum of myelin oligodendrocyte glycoprotein antibody associated disease (MOGAD) is growing rapidly. An update on the radiological features of the disease, and its evolution is thus necessary. Magnetic resonance imaging (MRI) has an increasingly important role in the differential diagnosis of MOGAD particularly from aquaporin-4 antibody-positive neuromyelitis optica spectrum disorder (AQP4-NMOSD), and multiple sclerosis (MS). Differentiating these conditions is of prime importance because the management is different between the three inflammatory diseases, and thus could prevent further attack-related disability. Therefore, identifying the MRI features suggestive of MOGAD has diagnostic and prognostic implications. We herein review optic nerve, spinal cord and the brain MRI findings from MOGAD adult patients, and compare them to AQP4-NMOSD and MS.
Published: 2021

13. NOPCHAP1 is a PAQosome cofactor that helps loading NOP58 on RUVBL1/2 during box C/D snoRNP biogenesis

Author: Franck Vandermoere, Tiago M. Bandeiras, Ana C. F. Paiva, Edouard Bertrand, Bruno Charpentier, Xavier Manival, Céline Verheggen, Marie-Eve Chagot, Pedro M. F. Sousa, Marc Quinternet, Marie-Cécile Robert, Philippe Fort, Paulo E. Santo, Jonathan Bizarro, Yoann Abel, Institut de Génétique Moléculaire de Montpellier (IGMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Institut de génétique humaine (IGH), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Instituto de Biologia Experimental e Tecnológica (IBET), Universidade Nova de Lisboa = NOVA University Lisbon (NOVA), Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Ingénierie, Biologie et Santé en Lorraine (IBSLor), Université de Lorraine (UL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut de Génomique Fonctionnelle (IGF), Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche en Biologie Cellulaire (CRBM), Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1), CNRS, Université de Montpellier (UM), Université de Lorraine (UL), ANR, Ligue Nationale contre le cancer, Institut National du cancer, ANR-10-INBS-0004,France-BioImaging,Développment d'une infrastructure française distribuée coordonnée(2010), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche en Biologie cellulaire de Montpellier (CRBM), Verheggen, Céline, and Développment d'une infrastructure française distribuée coordonnée - - France-BioImaging2010 - ANR-10-INBS-0004 - INBS - VALID
Subjects: Proteomics, Saccharomyces cerevisiae Proteins, AcademicSubjects/SCI00010, Recombinant Fusion Proteins, [SDV]Life Sciences [q-bio], ATPase, Mutant, Chaperone, Cofactor, Gene Knockout Techniques, 03 medical and health sciences, Adenosine Triphosphate, 0302 clinical medicine, Protein Domains, Genes, Reporter, Ribonucleoproteins, Small Nucleolar, Protein Interaction Mapping, RNA and RNA-protein complexes, Genetics, Humans, RNP biogenesis, HSP90 Heat-Shock Proteins, Small nucleolar RNA, Eye Proteins, 030304 developmental biology, Multi-subunit complex assembly, 0303 health sciences, PAQosome, biology, DNA Helicases, Nuclear Proteins, Box C/D snoRNP, Hsp90, AAA proteins, Cell biology, [SDV] Life Sciences [q-bio], Multiprotein Complexes, Chaperone (protein), biology.protein, ATPases Associated with Diverse Cellular Activities, Carrier Proteins, 030217 neurology & neurosurgery, Biogenesis, HeLa Cells, Molecular Chaperones
Abstract: The PAQosome is a large complex composed of the HSP90/R2TP chaperone and a prefoldin-like module. It promotes the biogenesis of cellular machineries but it is unclear how it discriminates closely related client proteins. Among the main PAQosome clients are C/D snoRNPs and in particular their core protein NOP58. Using NOP58 mutants and proteomic experiments, we identify different assembly intermediates and show that C12ORF45, which we rename NOPCHAP1, acts as a bridge between NOP58 and PAQosome. NOPCHAP1 makes direct physical interactions with the CC-NOP domain of NOP58 and domain II of RUVBL1/2 AAA+ ATPases. Interestingly, NOPCHAP1 interaction with RUVBL1/2 is disrupted upon ATP binding. Moreover, while it robustly binds both yeast and human NOP58, it makes little interactions with NOP56 and PRPF31, two other closely related CC-NOP proteins. Expression of NOP58, but not NOP56 or PRPF31, is decreased in NOPCHAP1 KO cells. We propose that NOPCHAP1 is a client-loading PAQosome cofactor that selects NOP58 to promote box C/D snoRNP assembly.
Published: 2020

14. Unidirectional Perpendicularly Aligned Lamella-Structured Oligosaccharide (A) ABA Triblock Elastomer (B) Thin Films Utilizing Triazolium

Author: Johanna Majoinen, Cécile Bouilhac, Patrice Rannou, Redouane Borsali, Matériaux Interfaces ELectrochimie (MIEL), Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces (LEPMI), Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), SYstèmes Moléculaires et nanoMatériaux pour l’Energie et la Santé (SYMMES), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), Synthèse, Structure et Propriétés de Matériaux Fonctionnels (STEP ), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Department of Applied Physics [Aalto], Aalto University, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherches sur les Macromolécules Végétales (CERMAV), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)
Subjects: Letter, Polymers and Plastics, Polymers, Oligosaccharides, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Inorganic Chemistry, Hemiterpenes, X-Ray Diffraction, Scattering, Small Angle, Materials Chemistry, Butadienes, [CHIM]Chemical Sciences, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, [PHYS]Physics [physics], Organic Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, Triazoles, 021001 nanoscience & nanotechnology, 0104 chemical sciences, [CHIM.POLY]Chemical Sciences/Polymers, Elastomers, Solvents, Gases, 0210 nano-technology
Abstract: We designed and synthesized high chi-low N-maltoheptaose-(triazolium(+)/N(SO2CF3)(2)(-))-polyisoprene-(triazolium(+)/N-(SO2CF3)(2)(-) -maltoheptaose ABA triblock elastomers featuring triazolium(+)/N(SO2 CF3)(2)(-) (TFSI-) counteranion ionic interfaces separating their constituting polymeric sub-blocks. Spin-coated and solvent-vapor- annealed (SVA) MH1.2k-(T+/TFSI-)-PI4.3k-(T+/TFSI-)-MH1.2k thin films demonstrate interface-induced charge cohesion through ca. 1 nm "thick" ionic nanochannels which facilitate the self-assembly of a perpendicularly aligned lamellar structure. Atomic force microscopy (AFM) and (grazing-incidence) small-angle X-ray scattering ((GI)-SAXS) characterizations of MH1.2k-(T+/TFSI-)-PI4.3k-(T+/TFSI-)- MH1.2k and pristine triBCP analogous thin films revealed sub-10 nm block copolymer (BCP) self-assembly and unidirectionally aligned nanostructures developed over several mu m(2) areas. Solvated TFSI- counterions enhance the oligosaccharide sub-block packing during SVA. The overall BCP phase behavior was mapped through SAXS characterizations comparing di- vs triblock polymeric architectures, a middle PI sub-block with two different molecular masses, and TFSI- or I- counteranion effects. This work highlights the benefits of inducing single-point electrostatic interactions within chemical structures of block copolymers to master the long-range self-assembly of prescribed morphologies.
Published: 2022

15. Recent Trends in Elaboration, Processing, and Derivatization of Cellulosic Materials Using Ionic Liquids

Author: Ahmed Salama, Peter Hesemann, National Research Center [Dokki, Egypt], Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)
Subjects: Renewable Energy, Sustainability and the Environment, General Chemical Engineering, Extraction (chemistry), Cellulose derivatives, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, chemistry, Chemical engineering, Cellulosic ethanol, Ionic liquid, [CHIM]Chemical Sciences, Environmental Chemistry, Cellulose, 0210 nano-technology, Derivatization, ComputingMilieux_MISCELLANEOUS, Elaboration
Abstract: Sustainable biopolymers are promising raw resources for the development of novel biomaterials with vast potential in various application fields. Nonetheless, the processing and derivatization of bi...
Published: 2020

16. Inhibition of G-protein signalling in cardiac dysfunction of intellectual developmental disorder with cardiac arrhythmia (IDDCA) syndrome

Author: De Nittis P., Efthymiou S., Sarre A., Guex N., Chrast J., Putoux A., Sultan T., Raza Alvi J., Ur Rahman Z., Zafar F., Rana N., Rahman F., Anwar N., Maqbool S., Zaki M. S., Gleeson J. G., Murphy D., Galehdari H., Shariati G., Mazaheri N., Sedaghat A., Lesca G., Chatron N., Salpietro V., Christoforou M., Houlden H., Simonds W. F., Pedrazzini T., Maroofian R., Reymond A., SYNAPS STUDY GROUP: SYNAPS Study Group: Stanislav Groppa, Blagovesta Marinova Karashova, Wolfgang Nachbauer, Sylvia Boesch, Larissa Arning, Dagmar Timmann, Bru Cormand, Belen Pérez-Dueñas, Jatinder S Goraya, Tipu Sultan, Jun Mine, Daniela Avdjieva, Hadil Kathom, Radka Tincheva, Selina Banu, Mercedes Pineda-Marfa, Pierangelo Veggiotti, Michel D. Ferrari, Arn M. J. M. van den Maagdenberg, Alberto Verrotti, Giangluigi Marseglia, Salvatore Savasta, Mayte García-Silva, Alfons Macaya Ruiz, Barbara Garavaglia, Eugenia Borgione, Simona Portaro, Benigno Monteagudo Sanchez, Richard Boles, Savvas Papacostas, Michail Vikelis, Eleni Zamba Papanicolaou, Efthymios Dardiotis, Shazia Maqbool, Shahnaz Ibrahim, Salman Kirmani, Nuzhat Noureen Rana, Osama Atawneh, George Koutsis, Salvatore Mangano, Carmela Scuderi, Giovanna Morello, Tanya Stojkovic, Massimo Zollo, Gali Heimer, Yves A. Dauvilliers, Pasquale Striano, Issam Al-Khawaja, Fuad Al-Mutairi, Hamed Sherifa., University of Lausanne (UNIL), University College of London [London] (UCL), Hôpital Femme Mère Enfant [CHU - HCL] (HFME), Hospices Civils de Lyon (HCL), Children's Hospital [Lahore], Institute of Child Health [Lahore], Children's Hospital [Multan], Institute of Child Health [Multan], National Research Centre - NRC (EGYPT), Howard Hughes Medical Institute (HHMI), Shahid Chamran University of Ahvaz (SCU), Ahvaz Jundishapur University of Medical Sciences (AJUMS), National Institutes of Health [Bethesda] (NIH), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Neuropsychiatrie : recherche épidémiologique et clinique (PSNREC), Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Lausanne = University of Lausanne (UNIL), Herrada, Anthony, P., De Nitti, S., Efthymiou, A., Sarre, N., Guex, J., Chrast, A., Putoux, T., Sultan, J., Raza Alvi, Z., Ur Rahman, F., Zafar, N., Rana, F., Rahman, N., Anwar, S., Maqbool, M. S., Zaki, J. G., Gleeson, D., Murphy, H., Galehdari, G., Shariati, N., Mazaheri, A., Sedaghat, G., Lesca, N., Chatron, V., Salpietro, M., Christoforou, H., Houlden, W. F., Simond, T., Pedrazzini, R., Maroofian, A., Reymond, STUDY GROUP: SYNAPS Study Group: Stanislav Groppa, Synap, Marinova Karashova, Blagovesta, Nachbauer, Wolfgang, Boesch, Sylvia, Arning, Larissa, Timmann, Dagmar, Cormand, Bru, Pérez-Dueñas, Belen, S Goraya, Jatinder, Sultan, Tipu, Mine, Jun, Avdjieva, Daniela, Kathom, Hadil, Tincheva, Radka, Banu, Selina, Pineda-Marfa, Mercede, Veggiotti, Pierangelo, Ferrari, Michel D., van den Maagdenberg, Arn M. J. M., Verrotti, Alberto, Marseglia, Giangluigi, Savasta, Salvatore, García-Silva, Mayte, Macaya Ruiz, Alfon, Garavaglia, Barbara, Borgione, Eugenia, Portaro, Simona, Monteagudo Sanchez, Benigno, Boles, Richard, Papacostas, Savva, Vikelis, Michail, Zamba Papanicolaou, Eleni, Dardiotis, Efthymio, Maqbool, Shazia, Ibrahim, Shahnaz, Kirmani, Salman, Noureen Rana, Nuzhat, Atawneh, Osama, Koutsis, George, Mangano, Salvatore, Scuderi, Carmela, Morello, Giovanna, Stojkovic, Tanya, Zollo, Massimo, Heimer, Gali, Dauvilliers, Yves A., Striano, Pasquale, Al-Khawaja, Issam, Al-Mutairi, Fuad, and Sherifa., Hamed
Subjects: Male, 0301 basic medicine, Developmental Disabilities, Batecs cardíacs, 0302 clinical medicine, Neurodevelopmental disorder, Heart Rate, Medicine, Child, Genetics (clinical), Mice, Knockout, Gnb5-null mouse models, GTP-Binding Protein beta Subunits, Cardiac muscle, Heart, Syndrome, IDDCA, Functional Genomics, Pedigree, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, cardiac conduction anomalies, Gnb5 -null mouse models, GNB5 variants, medicine.anatomical_structure, Child, Preschool, [SDV.BBM.GTP] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], Female, medicine.symptom, Signal Transduction, Bradycardia, Cardiac function curve, Gnb5 -null mouse model, medicine.medical_specialty, Adolescent, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, Contractility, Young Adult, Brain damage, 03 medical and health sciences, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, GNB5variants, [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], Internal medicine, Exome Sequencing, Heart rate, Genetics, Animals, Humans, business.industry, Gene Expression Profiling, Heart beat, Proteins, Cardiac arrhythmia, Arrhythmias, Cardiac, GNB5 variant, medicine.disease, Mice, Inbred C57BL, Autonomic nervous system, 030104 developmental biology, Endocrinology, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Mutation, Lesions cerebrals, cardiac conduction anomalie, business, Proteïnes, 030217 neurology & neurosurgery
Abstract: BackgroundPathogenic variants of GNB5 encoding the β5 subunit of the guanine nucleotide-binding protein cause IDDCA syndrome, an autosomal recessive neurodevelopmental disorder associated with cognitive disability and cardiac arrhythmia, particularly severe bradycardia.MethodsWe used echocardiography and telemetric ECG recordings to investigate consequences of Gnb5 loss in mouse.ResultsWe delineated a key role of Gnb5 in heart sinus conduction and showed that Gnb5-inhibitory signalling is essential for parasympathetic control of heart rate (HR) and maintenance of the sympathovagal balance. Gnb5−/− mice were smaller and had a smaller heart than Gnb5+/+ and Gnb5+/−, but exhibited better cardiac function. Lower autonomic nervous system modulation through diminished parasympathetic control and greater sympathetic regulation resulted in a higher baseline HR in Gnb5−/− mice. In contrast, Gnb5−/− mice exhibited profound bradycardia on treatment with carbachol, while sympathetic modulation of the cardiac stimulation was not altered. Concordantly, transcriptome study pinpointed altered expression of genes involved in cardiac muscle contractility in atria and ventricles of knocked-out mice. Homozygous Gnb5 loss resulted in significantly higher frequencies of sinus arrhythmias. Moreover, we described 13 affected individuals, increasing the IDDCA cohort to 44 patients.ConclusionsOur data demonstrate that loss of negative regulation of the inhibitory G-protein signalling causes HR perturbations in Gnb5−/− mice, an effect mainly driven by impaired parasympathetic activity. We anticipate that unravelling the mechanism of Gnb5 signalling in the autonomic control of the heart will pave the way for future drug screening.
Published: 2020

17. Evaluating the impact of the antrum size following laparoscopic sleeve gastrectomy: a randomized multicenter study

Author: Marius Nedelcu, Audrey Jaussent, Ion Donici, Sandrine Akouete, Marie-Christine Picot, Olivier Emungania, Alexandrine Robert, Anamaria Nedelcu, David Nocca, CCSD, Accord Elsevier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), CIC Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Saint Eloi (CHRU Montpellier), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Hôpital Nord [CHU - APHM], Clinique Bouchard - ELSAN [Marseille], Clinique Saint Michel - ELSAN [Toulon], Institut de Génomique Fonctionnelle (IGF), Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-CHU Saint-Eloi-Institut National de la Santé et de la Recherche Médicale (INSERM), Neuropsychiatrie : recherche épidémiologique et clinique (PSNREC), Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), and Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: Weight loss, medicine.medical_specialty, Complications, [SDV.MHEP.CHI] Life Sciences [q-bio]/Human health and pathology/Surgery, Nausea, MESH: Laparoscopy, 030209 endocrinology & metabolism, [SDV.MHEP.CHI]Life Sciences [q-bio]/Human health and pathology/Surgery, Sleeve, Group B, 03 medical and health sciences, Postoperative Complications, 0302 clinical medicine, Antrum conservation, Gastrectomy, MESH: Postoperative Complications, medicine, Humans, Prospective Studies, Antrum, MESH: Treatment Outcome, Retrospective Studies, Gastrin, 2. Zero hunger, MESH: Humans, business.industry, Reflux, MESH: Retrospective Studies, GERD, MESH: Obesity, Morbid, medicine.disease, MESH: Prospective Studies, Obesity, Morbid, 3. Good health, Surgery, MESH: France, MESH: Gastrectomy, Treatment Outcome, Laparoscopy, 030211 gastroenterology & hepatology, France, medicine.symptom, business, Body mass index
Abstract: Background The effect of laparoscopic sleeve gastrectomy (LSG) on gastroesophageal reflux disease (GERD) remains discordant and highly related to the surgical technique. GERD and weight regain are probably understudied by prospective clinical studies depending on different technical factors. Objectives The purpose of this article is to evaluate the effect of extent to which the antrum is resected on GERD following LSG but also on early complications and short-term weight loss results. Setting University Hospital, France. Methods Patients were randomly assigned in group A (172 patients), LSG with antral resection, or group B (174 patients), LSG with antral preservation. The baseline characteristics collected were demographic characteristics and anthropometric data (age, sex, body mass index), presence of GERD clinical characteristics, ± pH-metry, postoperative complications, or gastrin level. Results A total of 279 patients underwent LSG and they were included in the final analysis. The GERD analyzed at 3 months postoperatively by pH-metry was observed for 57.8% in group A and for 52.4% of patients in group B (P = .4819). There was no statistically significant difference (P = .3755) between the 2 groups at 1 year after surgery (group A, 49.5% versus group B, 43.6%). The gastrin serum level was analyzed 1 year after surgery for a total of 107 patients. For group A, the mean gastrin level was 97.4 ± 85.9 pg/mL, which was inferior compared with group B (150.6 ± 152.4 pg/mL) with no statistical difference (P = .067). The recorded excess weight loss for group A was 79.67% (± 28.88) with no statistically significant difference with group B 74.46% (± 36.61) (P = .3678). The mortality rate was nil. We recorded 5 cases of staple line leakage (3 in group A and 2 in group B); 11 patients presented bleeding (3 in group A and 8 group B), and 4 patients presented with gastric stenosis (2 in group A and 2 in group B). Conclusions The antrum preservation has no significant difference in terms of reflux, weight loss, or complications at 3 or 12 months following LSG. The only significant difference was achieved for nausea and vomiting symptoms, which were more significant for the antrum resection group. Further clinical trials with newer procedures will indicate the factors that can diminish the reflux following LSG. Furthermore, the conservation of a large part of the antrum may be helpful to convert the sleeve to another bariatric procedure (transit bipartition).
Published: 2020

18. COPD is deleterious for pericytes: implications during training-induced angiogenesis in skeletal muscle

Author: Marine Blaquière, Elisa Rossi, Nicolas Molinari, Emilie Passerieux, Fares Gouzi, Matthias Catteau, Nicola Marchi, David M. Smadja, Pascal Pomiès, Léo Blervaque, Bronia Ayoub, Antonia Perez-Martin, Jacques Mercier, Adeline Blandinières, Maurice Hayot, Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Innovations thérapeutiques en hémostase (IThEM - U1140), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Institut de Génomique Fonctionnelle (IGF), Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Institut Montpelliérain Alexander Grothendieck (IMAG), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Caractéristiques féminines des dysfonctions des interfaces cardio-vasculaires (EA 2992), and Université Montpellier 1 (UM1)-Université de Montpellier (UM)
Subjects: Male, medicine.medical_specialty, Physiology, Vastus lateralis muscle, Angiogenesis, Neovascularization, Physiologic, 030204 cardiovascular system & hematology, Pulmonary Disease, Chronic Obstructive, angiogenesis, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, pericyte, Physiology (medical), Internal medicine, [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO], medicine, Humans, COPD, In patient, Muscle, Skeletal, Aged, 030304 developmental biology, 0303 health sciences, business.industry, Mesenchymal stem cell, Skeletal muscle, Blood flow, Middle Aged, medicine.disease, Capillaries, Exercise Therapy, respiratory tract diseases, medicine.anatomical_structure, Endocrinology, Female, Pericyte, Pericytes, Cardiology and Cardiovascular Medicine, business, exercise training
Abstract: International audience; Improvements in skeletal muscle endurance and oxygen uptake are blunted in patients with chronic obstructive pulmonary disease (COPD), possibly because of a limitation in the muscle capillary oxygen supply. Pericytes are critical for capillary blood flow adaptation during angiogenesis but may be impaired by COPD systemic effects, which are mediated by circulating factors. This study compared the pericyte coverage of muscle capillaries in response to 10 wk of exercise training in patients with COPD and sedentary healthy subjects (SHS). Fourteen patients with COPD were compared with seven matched SHS. SHS trained at moderate intensity corresponding to an individualized moderate-intensity patient with COPD trained at the same relative (%V̇o2: COPD-RI) or absolute (mL·min-1·kg-1: COPD-AI) intensity as SHS. Capillary-to-fiber ratio (C/F) and NG2+ pericyte coverage were assessed from vastus lateralis muscle biopsies, before and after 5 and 10 wk of training. We also tested in vitro the effect of COPD and SHS serum on pericyte morphology and mesenchymal stem cell (MSC) differentiation into pericytes. SHS showed greater improvement in aerobic capacity (V̇o2VT) than both patients with COPD-RI and patients with COPD-AI (Group × Time: P = 0.004). Despite a preserved increase in the C/F ratio, NG2+ pericyte coverage did not increase in patients with COPD in response to training, contrary to SHS (Group × Time: P = 0.011). Conversely to SHS serum, COPD serum altered pericyte morphology (P < 0.001) and drastically reduced MSC differentiation into pericytes (P < 0.001). Both functional capacities and pericyte coverage responses to exercise training are blunted in patients with COPD. We also provide direct evidence of the deleterious effect of COPD circulating factors on pericyte morphology and differentiation.NEW & NOTEWORTHY This work confirms the previously reported impairment in the functional response to exercise training of patients with COPD compared with SHS. Moreover, it shows for the first time that pericyte coverage of the skeletal capillaries is drastically reduced in patients with COPD compared with SHS during training-induced angiogenesis. Finally, it provides experimental evidence that circulating factors are involved in the impaired pericyte coverage of patients with COPD.
Published: 2020

19. Engineering Fe–N Doped Graphene to Mimic Biological Functions of NADPH Oxidase in Cells

Author: Ruibin Li, Weili Wang, Di Wu, Jingkun Li, Huizhen Zheng, Xiaoming Cai, Meng Gao, Frédéric Jaouen, Qianqian Xie, Shujuan Xu, Jia Li, Ronglin Ma, Yanxia Pan, Xi Liu, Washington State University (WSU), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), ABiMS - Informatique et bioinformatique = Analysis and Bioinformatics for Marine Science (FR2424), Station biologique de Roscoff (SBR), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Guangdong Provincial Center for Disease Control and Prevention, Soochow University, and Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)
Subjects: Models, Molecular, Enzyme complex, THP-1 Cells, Interleukin-1beta, 01 natural sciences, Biochemistry, chemistry.chemical_compound, Colloid and Surface Chemistry, Chronic granulomatous disease, Biomimetic Materials, Superoxides, Doping, NADPH oxidase, biology, Superoxide, [CHIM.MATE]Chemical Sciences/Material chemistry, respiratory system, Transmembrane protein, cardiovascular system, Graphite, Signal transduction, Oxidation-Reduction, Signal Transduction, circulatory and respiratory physiology, inorganic chemicals, Nitrogen, Iron, 010402 general chemistry, Catalysis, Immune system, medicine, Humans, [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biochemistry [q-bio.BM], NOx, Fluorescent Dyes, Peroxidase, Interleukin-6, Tumor Necrosis Factor-alpha, Nanozyme, NADPH Oxidases, [CHIM.CATA]Chemical Sciences/Catalysis, General Chemistry, medicine.disease, 0104 chemical sciences, chemistry, Nanocatalyst, biology.protein, Graphene, Reactive Oxygen Species, NADP
Abstract: International audience; NADPH oxidase (NOX) as a transmembrane enzyme complex controls the generation of superoxide that plays important roles in immune signaling pathway. NOX inactivation may elicit immunodeficiency and cause chronic granulomatous disease (CGD). Biocompatible synthetic materials with NOX-like activities would therefore be interesting as curative and/or preventive approaches in case of NOX deficiency. Herein, we synthesized a Fe–N doped graphene (FeNGR) nanomaterial that could mimic the activity of NOX by efficiently catalyzing the conversion of NADPH into NADP+ and triggering the generation of oxygen radicals. The resulting FeNGR nanozyme had similar cellular distribution to NOX and is able to mimic the enzyme function in NOX-deficient cells by catalyzing the generation of superoxide and retrieving the immune activity, evidenced by TNF-α, IL-1β, and IL-6 production in response to Alum exposure. Overall, our study discovered a synthetic material (FeNGR) to mimic NOX and demonstrated its biological function in immune activation of NOX-deficient cells.
Published: 2020

20. Autosomal Recessive Cerebellar Ataxias With Elevated Alpha‐Fetoprotein: Uncommon Diseases, Common Biomarker

Author: Mathilde Renaud, Christine Tranchant, Michel Koenig, Mathieu Anheim, Service de Génétique Clinique [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Nutrition-Génétique et Exposition aux Risques Environnementaux (NGERE), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), Service de Neurologie [Strasbourg], CHU Strasbourg-Hopital Civil, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg (UNISTRA), Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques (LGMR), Université Montpellier 1 (UM1)-IFR3, Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), and Herrada, Anthony
Subjects: MESH: Multifunctional Enzymes, Cerebellar Ataxia, MESH: DNA Helicases, MESH: Ataxia Telangiectasia, Ataxia Telangiectasia, alpha-fetoprotein, 03 medical and health sciences, 0302 clinical medicine, Cogan Syndrome, Humans, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], MESH: Cogan Syndrome, 030304 developmental biology, 0303 health sciences, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, MESH: Humans, MESH: RNA Helicases, oculomotor apraxia, DNA Helicases, Nuclear Proteins, Multifunctional Enzymes, MESH: Phosphotransferases (Alcohol Group Acceptor), digestive system diseases, MESH: Cerebellar Ataxia, 3. Good health, DNA-Binding Proteins, Phosphotransferases (Alcohol Group Acceptor), DNA Repair Enzymes, MESH: DNA Repair Enzymes, recessive ataxia, Neurology, DNA/RNA repair, MESH: Biomarkers, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], alpha-Fetoproteins, MESH: alpha-Fetoproteins, Neurology (clinical), MESH: Nuclear Proteins, Biomarkers, RNA Helicases, MESH: DNA-Binding Proteins, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, 030217 neurology & neurosurgery
Abstract: International audience; alpha-Fetoprotein (AFP) is a biomarker of several autosomal recessive cerebellar ataxias (ARCAs), especially ataxia telangiectasia (AT) and ataxia with oculomotor apraxia (AOA) type 2 (AOA2). More recently, slightly elevated AFP has been reported in AOA1 and AOA4. Interestingly, AOA1, AOA2, AOA4, and AT are overlapping ARCAs characterized by oculomotor apraxia, with oculocephalic dissociation, choreo-dystonia, and/or axonal sensorimotor neuropathy, in addition to cerebellar ataxia with cerebellar atrophy. The genetic backgrounds in these disorders play central roles in nuclear maintenance through DNA repair [ATM (AT), APTX (AOA1), or PNKP (AOA4)] or RNA termination [SETX (AOA2)]. Partially discriminating thresholds of AFP have been proposed as a way to distinguish between ARCAs with elevated AFP. In these entities, elevated AFP may be an epiphenomenon as a result of liver transcriptional dysregulation. AFP is a simple and reliable biomarker for the diagnosis of ARCA in performance and interpretation of next-generation sequencing. Here, we evaluated clinical, laboratory, imaging, and molecular data of the group of ARCAs that share elevated AFP serum levels that have been described in the past two decades. © 2020 International Parkinson and Movement Disorder Society.
Published: 2020

21. Cardiac magnetic resonance assessment of left ventricular dilatation in chronic severe left-sided regurgitations: comparison with standard echocardiography

Author: Alexis Theron, Jennifer Cautela, Franck Thuny, Maxime Guye, Axel Bartoli, Thibaut Capron, H. Lepidi, Johan Pinto, Jean-François Avierinos, Ugo Scemama, Frédéric Collart, Alexis Jacquier, Charlène Miola, Monique Bernard, A. Porto, Centre de résonance magnétique biologique et médicale (CRMBM), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Centre National de la Recherche Scientifique (CNRS), Assistance Publique - Hôpitaux de Marseille (APHM), Hôpital de la Timone [CHU - APHM] (TIMONE), Département d'hématologie biologique[Montpellier], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Saint Eloi (CHRU Montpellier), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Microbes évolution phylogénie et infections (MEPHI), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), and Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-CHU Saint-Eloi
Subjects: Adult, Male, medicine.medical_specialty, Magnetic Resonance Spectroscopy, Adolescent, Left, Regurgitation (circulation), Severity of Illness Index, Asymptomatic, Left sided, 030218 nuclear medicine & medical imaging, Young Adult, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, Lv dysfunction, medicine, Humans, Cardiac magnetic resonance imaging (CMR), Left ventricular dilatation, Radiology, Nuclear Medicine and imaging, cardiovascular diseases, Ventricular dysfunction, Aged, Mitral valve insufficiency, Aged, 80 and over, Mitral regurgitation, Radiological and Ultrasound Technology, business.industry, Area under the curve, General Medicine, Middle Aged, Dilatation, 3. Good health, Aortic valve insufficiency, Echocardiography, 030220 oncology & carcinogenesis, cardiovascular system, Cardiology, Female, medicine.symptom, Cardiac magnetic resonance, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: International audience; Purpose: The purpose of this study was to investigate the potential additional value of cardiac magnetic resonance (CMR) in the assessment of left ventricular (LV) dilatation and dysfunction by comparison to standard echocardiography in patients with chronic left-sided valvular regurgitation.Materials and methods: We prospectively enrolled patients with chronic severe mitral regurgitation (MR) or aortic regurgitation (AR). They underwent standard echocardiography and CMR using aortic flow and LV-function sequences. LV dilatation or dysfunction was assessed with each technique, based on thresholds used for surgery indication. Reference regurgitation severity was defined following previously reported CMR-based regurgitant volume thresholds.Results: A total of 71 patients with chronic severe MR (n= 44) or severe AR (n= 27) were prospectively included. There were 60 men and 11 women with a mean age of 61 + 14 (SD) years (range: 18-83 years). CMR-based regurgitation severity was significantly greater in the LV dysfunction group when assessed with CMR (MR, P = 0.011; AR, P= 0.006) whereas it was not different when LV dysfunction was assessed using standard echocardiography. Among standard echocardiography and CMR volumetric indices, CMR-derived end-diastolic volume showed the best ability to predict regurgitation severity (area under the curve [AUC] = 0.78 for MR; AUC = 0.91 for AR). Diagnostic thresholds identified on receiver operating characteristics-curve analysis were lower than those of current European recommendations and closer to North-American guidelines.Conclusion: CMR assessment of LV end-diastolic volume in chronic severe left-sided regurgitations is more reliably associated with CMR-based regurgitant volume by comparison with standard echocardiography diameter. CMR may provide useful evaluation before surgery decision for severe asymptomatic regurgitations. (C) 2020 Societe francaise de radiologie.
Published: 2020

22. Impact of Videolaryngoscopy Expertise on First-Attempt Intubation Success in Critically Ill Patients

Author: Vincent Brunot, Kada Klouche, Boris Jung, Audrey De Jong, Philippe Corne, Matthieu Amalric, Valerie Moulaire Rigollet, Romaric Larcher, Fanny Garnier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Département d'anesthésie-réanimation[Montpellier], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [Montpellier], Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [CHU Montpellier]
Subjects: Male, medicine.medical_specialty, Time Factors, Multivariate analysis, Critical Illness, health care facilities, manpower, and services, [SDV]Life Sciences [q-bio], medicine.medical_treatment, Video Recording, MEDLINE, Psychological intervention, Comorbidity, Critical Care and Intensive Care Medicine, 03 medical and health sciences, 0302 clinical medicine, Intubation, Intratracheal, Humans, Medicine, Intubation, Coma, Hypoxia, Aged, Laryngoscopy, business.industry, Critically ill, 030208 emergency & critical care medicine, Middle Aged, Heart Arrest, 3. Good health, Intensive Care Units, 030228 respiratory system, Emergency medicine, Female, Observational study, Clinical Competence, medicine.symptom, business, Airway
Abstract: Objectives The use of a videolaryngoscope in the ICU on the first endotracheal intubation attempt and intubation-related complications is controversial. The objective of this study was to evaluate the first intubation attempt success rate in the ICU with the McGrath MAC videolaryngoscope (Medtronic, Minneapolis, MN) according to the operators' videolaryngoscope expertise and to describe its association with the occurrence of intubation-related complications. Design Observational study. Setting Medical ICU. Subjects Consecutive endotracheal intubations in critically ill patients. Interventions Systematic use of the videolaryngoscope. Measurements and main outcomes We enrolled 202 consecutive endotracheal intubations. Overall first-attempt success rate was 126 of 202 (62%). Comorbidities, junior operator, cardiac arrest upon admission, and coma were associated with a lower first-attempt success rate. The first-attempt success rate was less than 50% in novice operators (1-5 previous experiences with videolaryngoscope, independently of airway expertise with direct laryngoscopies) and 87% in expert operators (> 15 previous experiences with videolaryngoscope). Multivariate analysis confirmed the association between specific skill training with videolaryngoscope and the first-attempt success rate. Severe hypoxemia and overall immediate intubation-related complications occurred more frequently in first-attempt failure intubations (24/76, 32%) than in first-attempt success intubations (14/126, 11%) (p Conclusions We report for the first time in the critically ill that specific videolaryngoscopy skill training, assessed by the number of previous videolaryngoscopies performed, is an independent factor of first-attempt intubation success. Furthermore, we observed that specific skill training with the McGrath MAC videolaryngoscope was fast. Therefore, future trials evaluating videolaryngoscopy in ICUs should consider the specific skill training of operators in videolaryngoscopy.
Published: 2020

23. The puzzle of quality of life in schizophrenia: putting the pieces together with the FACE-SZ cohort

Author: Eric Brunet-Gouet, Romain Rey, Christine Passerieux, Mathieu Urbach, Roxana-Mihaela Honciuc, Anne-Lise Bohec, Delphine Capdevielle, Sylvain Leigner, Myrtille André, Caroline Dubertret, Guillaume Fond, David Misdrahi, H. Laouamri, Bruno Aouizerate, Isabelle Chereau, Baptiste Pignon, Julien Dubreucq, Paul Roux, Julie Clauss, Fabrice Berna, Franck Schürhoff, Jasmina Mallet, Mickael Ehrminger, Christophe Lançon, Laboratoire de recherches cliniques et en santé publique sur les handicaps psychique, cognitif et moteur (HANDIReSP), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Centre Hospitalier de Versailles André Mignot (CHV), Centre de recherche en épidémiologie et santé des populations (CESP), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Paul Brousse-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Saclay, Fondation FondaMental [Créteil], Département de psychiatrie adulte, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital La Colombière, Hôpital Charles Perrens, Nutrition et Neurobiologie intégrée (NutriNeuro), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Ecole nationale supérieure de chimie, biologie et physique-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Les Hôpitaux Universitaires de Strasbourg (HUS), Neuropsychologie Cognitive et Physiopathologie de la Schizophrénie (NCPS), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Hôpital Civil de Strasbourg, Centre de recherche en neurosciences de Lyon - Lyon Neuroscience Research Center (CRNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier le Vinatier [Bron], Neuropsychiatrie : recherche épidémiologique et clinique (PSNREC), Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), CHU Clermont-Ferrand, Hôpital Louis Mourier - AP-HP [Colombes], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Institut de psychiatrie et neurosciences de Paris (IPNP - U1266 Inserm), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Université Paris Diderot - Paris 7 (UPD7), CHU Grenoble, Hôpital de la Conception [CHU - APHM] (LA CONCEPTION), Centre d'études et de recherche sur les services de santé et la qualité de vie (CEReSS), Aix Marseille Université (AMU), Hôpital Sainte-Marguerite [CHU - APHM] (Hôpitaux Sud ), Institut de Neurosciences cognitives et intégratives d'Aquitaine (INCIA), Université Bordeaux Segalen - Bordeaux 2-Université Sciences et Technologies - Bordeaux 1-SFR Bordeaux Neurosciences-Centre National de la Recherche Scientifique (CNRS), Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Institut National de la Santé et de la Recherche Médicale (INSERM)-Hôpital Civil de Strasbourg-Université de Strasbourg (UNISTRA), Centre de recherche en neurosciences de Lyon (CRNL), Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Centre hospitalier Charles Perrens [Bordeaux], Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), and Université Bordeaux Segalen - Bordeaux 2-Université Sciences et Technologies - Bordeaux 1 (UB)-SFR Bordeaux Neurosciences-Centre National de la Recherche Scientifique (CNRS)
Subjects: mediation analyses, Mediation (statistics), structural equation modeling, Structural equation modeling, Cohort Studies, 03 medical and health sciences, Cognition, 0302 clinical medicine, Quality of life, medicine, Humans, Applied Psychology, Cognitive reserve, [SDV.NEU.PC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Psychology and behavior, Mechanism (biology), medicine.disease, humanities, 030227 psychiatry, Psychiatry and Mental health, Cross-Sectional Studies, quality of life, Schizophrenia, [SDV.MHEP.PSM]Life Sciences [q-bio]/Human health and pathology/Psychiatrics and mental health, Cohort, Schizophrenic Psychology, Psychology, 030217 neurology & neurosurgery, Clinical psychology
Abstract: BackgroundThe determinants of quality of life (QoL) in schizophrenia are largely debated, mainly due to methodological discrepancies and divergence about the concepts concerned. As most studies have investigated bi- or tri-variate models, a multivariate model accounting for simultaneous potential mediations is necessary to have a comprehensive view of the determinants of QOL. We sought to estimate the associations between cognitive reserve, cognition, functioning, insight, depression, schizophrenic symptoms, and QoL in schizophrenia and their potential mediation relationships.MethodsWe used structural equation modeling with mediation analyses to test a model based on existing literature in a sample of 776 patients with schizophrenia from the FondaMental Foundation FACE-SZ cohort.ResultsOur model showed a good fit to the data. We found better functioning to be positively associated with a better QoL, whereas better cognition, better insight, higher levels of depression, and schizophrenic symptoms were associated with a lower QoL in our sample. Cognitive reserve is not directly linked to QoL, but indirectly in a negative manner via cognition. We confirm the negative relationship between cognition and subjective QoL which was previously evidenced by other studies; moreover, this relationship seems to be robust as it survived in our multivariate model. It was not explained by insight as some suggested, thus the mechanism at stake remains to be explained.ConclusionThe pathways to subjective QoL in schizophrenia are complex and the determinants largely influence each other. Longitudinal studies are warranted to confirm these cross-sectional findings.
Published: 2020

24. Clinical phenotype and loss of the slow skeletal muscle troponin T in three new patients with recessive TNNT1 nemaline myopathy

Author: A. Madelaine, Julie Brocard, Mireille Cossée, Isabelle Marty, Anne-Cécile Coville, Michel Koenig, Christine Ioos, C. Thèze, John Rendu, Klaus Dieterich, Aurore Siegfried, Julien Fauré, Claude Cances, Henri Pegeot, Eloïse Baudou, Pascale Marcorelle, Norma B. Romero, Emmanuelle Lacène, Emmanuelle Uro Coste, Murielle Dobrzynski, Raul Juntas Morales, Justine Géraud, Neurologie générale et maladies inflammatoires du système nerveux [Toulouse], Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Hôpital Purpan [Toulouse], CHU Toulouse [Toulouse], [GIN] Grenoble Institut des Neurosciences (GIN), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Grenoble Alpes (UGA), Centre de Recherches en Cancérologie de Toulouse (CRCT), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Groupe d'imagerie neurofonctionnelle (GIN), Institut des Maladies Neurodégénératives [Bordeaux] (IMN), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), CHRU Brest, Pôle de Biologie Pathologie (CHU - BREST - Biologie pathologie), Hôpital Raymond Poincaré [AP-HP], Institut de Myologie, Centre National de la Recherche Scientifique (CNRS)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Association française contre les myopathies (AFM-Téléthon)-Sorbonne Université (SU), Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques (LGMR), IFR3, Université Montpellier 1 (UM1)-Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Institut des Neurosciences de Montpellier - Déficits sensoriels et moteurs (INM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Association française contre les myopathies (AFM-Téléthon)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Montpellier 1 (UM1)-IFR3, Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), and Institut des Neurosciences de Montpellier (INM)
Subjects: 0301 basic medicine, Pathology, medicine.medical_specialty, diagnosis, [SDV]Life Sciences [q-bio], Biopsy, Nonsense mutation, neuromuscular diseases, Slow skeletal muscle troponin T, Myopathies, Nemaline, 03 medical and health sciences, Exon, 0302 clinical medicine, Nemaline myopathy, Troponin T, Genetics, medicine, Humans, Genetic Predisposition to Disease, Diagnostics, Genetics (clinical), Genetic Association Studies, Sequence Deletion, business.industry, Homozygote, Skeletal muscle, Muscle weakness, Computational Biology, High-Throughput Nucleotide Sequencing, Infant, Sequence Analysis, DNA, medicine.disease, musculoskeletal system, Immunohistochemistry, Hypotonia, 3. Good health, 030104 developmental biology, medicine.anatomical_structure, Phenotype, Child, Preschool, Mutation, Female, medicine.symptom, business, 030217 neurology & neurosurgery
Abstract: BackgroundCongenital nemaline myopathies are rare pathologies characterised by muscle weakness and rod-shaped inclusions in the muscle fibres.MethodsUsing next-generation sequencing, we identified three patients with pathogenic variants in the Troponin T type 1 (TNNT1) gene, coding for the troponin T (TNT) skeletal muscle isoform.ResultsThe clinical phenotype was similar in all patients, associating hypotonia, orthopaedic deformities and progressive chronic respiratory failure, leading to early death. The anatomopathological phenotype was characterised by a disproportion in the muscle fibre size, endomysial fibrosis and nemaline rods. Molecular analyses of TNNT1 revealed a homozygous deletion of exons 8 and 9 in patient 1; a heterozygous nonsense mutation in exon 9 and retention of part of intron 4 in muscle transcripts in patient 2; and a homozygous, very early nonsense mutation in patient 3.Western blot analyses confirmed the absence of the TNT protein resulting from these mutations.DiscussionThe clinical and anatomopathological presentations of our patients reinforce the homogeneous character of the phenotype associated with recessive TNNT1 mutations. Previous studies revealed an impact of recessive variants on the tropomyosin-binding affinity of TNT. We report in our patients a complete loss of TNT protein due to open reading frame disruption or to post-translational degradation of TNT.
Published: 2020

25. Probability of myopia in children with high refined carbohydrates consumption in France

Author: Vincent Daien, Claire Berticat, Michel Raymond, Max Villain, Angelique Ciais, Sonia Mamouni, Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Neuropsychiatrie : recherche épidémiologique et clinique (PSNREC), Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), and Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE)
Subjects: Male, medicine.medical_specialty, Adolescent, genetic structures, Carbohydrates, Refraction, Ocular, 03 medical and health sciences, Screen time, 0302 clinical medicine, lcsh:Ophthalmology, Epidemiology, Prevalence, Myopia, Humans, Medicine, Family history, Sugar, Child, Children, Consumption (economics), business.industry, Public health, [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], Starch, General Medicine, Odds ratio, Confidence interval, 3. Good health, Diet, Ophthalmology, Cross-Sectional Studies, Risk factors, lcsh:RE1-994, Child, Preschool, Cohort, 030221 ophthalmology & optometry, Female, France, business, [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition, Outdoor time, 030217 neurology & neurosurgery, Research Article, Demography, Refined carbohydrates
Abstract: Background Evaluate risk factors for paediatric myopia in a contemporary French cohort taking into account consumption of refined carbohydrates (starches and sugars). Methods An epidemiological cross-sectional study was conducted between May 2017 and May 2018. Two hundred sixty-four children aged 4 to 18 years attending the Centre Hospitalier Universitaire Gui de Chauliac in Montpellier were recruited. Ophthalmologic or optometric cycloplegic refraction were measured. Evaluated risk factors for myopia were collected, including family history of myopia, outdoor time, reading time, screen time, physical activity, and consumption of refined carbohydrates. Association between the probability of at least one eye showing myopia (defined as Results Overall, 86/264 (32.6%) children investigated showed myopia in at least one eye. We included 180 children exhibiting refraction P = 0.009) but decreased it for boys (OR = 0.94; 95% CI, 0.89–0.98; P = 0.011). The probability of myopia was marginally increased with increased screen time (OR = 2.32; 95% CI, 0.94–6.47; P = 0.083). Outdoor time seemed marginally protective (OR = 0.74; 95% CI, 0.54–1.01; P = 0.057). Conclusion Refined carbohydrates consumption could be associated with child myopia, with increased probability for girls and unexpected reduced probability for boys, possibly due to the fact that frequency of carbohydrates consumption do not really capture boy’s chronic hyperglycemia, boys being more physically active than girls at all ages. Some known risk/protective factors of myopia were marginally significant: screen time (risk) and outdoor time (protective). This study reinforces the belief that modifiable risk factors for myopia could be targets for future public health actions.
Published: 2020

26. Le dégoût dans le trouble obsessionnel compulsif, mécanismes, évaluation, implications pour des pistes thérapeutiques

Author: B. Vivet, Caroline Novara, Stéphane Raffard, Dynamique des capacités humaines et des conduites de santé (EPSYLON), Université de Montpellier (UM)-Université Paul-Valéry - Montpellier 3 (UPVM)-Université Montpellier 1 (UM1), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), and Université Montpellier 1 (UM1)-Université Paul-Valéry - Montpellier 3 (UPVM)-Université de Montpellier (UM)
Subjects: 05 social sciences, 0501 psychology and cognitive sciences, ComputingMilieux_MISCELLANEOUS, 050107 human factors, General Psychology, [SHS]Humanities and Social Sciences, 050104 developmental & child psychology
Abstract: Resume Introduction Bien que consideree comme une emotion de base, le degout a recu peu d’attention des recherches issues de la psychologie des emotions par rapport a d’autres emotions comme la peur ou la tristesse. Resultats de la litterature De nombreuses donnees empiriques et experimentales suggerent pourtant que le degout joue un role determinant non seulement dans notre capacite a nous adapter a notre environnement mais aussi dans le maintien et le developpement de certains etats psychopathologiques comme les troubles obsessionnels compulsifs. L’objectif de cet article est de presenter, selon une approche epistemologique behavioriste et cognitiviste, une revue narrative des donnees de la litterature concernant le construit du degout, notamment dans ses deux dimensions fondamentales que sont la propension au degout et la sensibilite au degout. Une premiere partie sera consacree a l’acquisition du degout dans le cadre de l’apprentissage evaluatif et pavlovien, nous decrirons ensuite en detail les outils d’evaluation disponibles dans la litterature permettant d’en evaluer les differentes dimensions, puis nous aborderons le continuum de l’experience de degout allant du degout normal au degout pathologique et ciblerons particulierement son role dans les obsessions dysfonctionnelles de contamination et de detresse emotionnelle. Discussion Si, d’un point de vue theorique, la comprehension des mecanismes sous-jacent des reactions de degout pathologique s’ameliore, les propositions de prises en charge permettant d’attenuer ces reactions restent rares. Des pistes nouvelles de prises en charge seront decrites afin de permettre le developpement d’interventions psychologiques empiriquement fondees. Conclusion La reconnaissance d’influences emotionnelles allant au-dela de l’anxiete dans le trouble obsessionnel compulsif decoule de l’importance fondamentale d’une approche dimensionnelle de la psychopathologie et la soutien. Les donnees accumulees suggerent que l’inclusion du degout dans les modeles theoriques du trouble obsessionnel compulsif, en particulier dans le TOC de contamination, pourront ainsi ameliorer notre comprehension et le traitement de ce trouble.
Published: 2020

27. Hepcidin and ferritin levels in restless legs syndrome: a case–control study

Author: Chenini, Sofiene, Delaby, Constance, Rassu, Anna-Laura, Barateau, Lucie, Vialaret, Jérôme, Hirtz, Christophe, Dupuy, Anne Marie, Lehmann, Sylvain, Jaussent, Isabelle, Dauvilliers, Yves, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Neuropsychiatrie : recherche épidémiologique et clinique (PSNREC), Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Cellules souches normales et cancéreuses, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 1 (UM1)-Université de Montpellier (UM), Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), and Bodescot, Myriam
Subjects: Adult, Male, Iron, Polysomnography, [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, lcsh:Medicine, Article, Hepcidins, Restless Legs Syndrome, mental disorders, Humans, [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biochemistry [q-bio.BM], lcsh:Science, [SDV.BBM.BC] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biochemistry [q-bio.BM], Aged, lcsh:R, [SDV.NEU.NB] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, Middle Aged, Neurology, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, Case-Control Studies, Ferritins, Female, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, lcsh:Q, Neurological disorders
Abstract: International audience; The association between restless legs syndrome (RLS) and iron homeostasis remains unclear. We compared serum hepcidin and ferritin levels in patients with RLS and controls, and assessed their relationships with RLS phenotype, drug intake, and history of augmentation syndrome. 102 drug-free RLS patients (age 58.9 [24.5-77.2], 63 females) and 73 controls (age 56.8 [23.46-76.6], 45 females) underwent a polysomnography recording. Hepcidin levels were quantified by ELISA. 34 RLS patients had a second assessment after starting dopaminergic drugs. Ferritin level was low (
Published: 2020

28. Serum GFAP in multiple sclerosis: correlation with disease type and MRI markers of disease severity

Author: Claire Duflos, Jeremy Deverdun, Frédéric Pinna, Tobias Kober, Clarisse Carra-Dalliere, Bénédicte Maréchal, Ricardo Corredor Jerez, Christophe Hirtz, Pauline Prin, Xavier Ayrignac, Nicolas Menjot de Champfleur, Sylvain Lehmann, Mahmoud Charif, Mário João Fartaria, Pierre Labauge, Aleksandra Maleska Maceski, Emmanuelle Le Bars, Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Département de neurologie [Montpellier], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [Montpellier]-Université de Montpellier (UM), Département de Neuroradiologie[Montpellier], Institut d’Imagerie Fonctionnelle Humaine [CHU Montpellier] (I2FH), Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université de Lausanne = University of Lausanne (UNIL), Ecole Polytechnique Fédérale de Lausanne (EPFL), Bodescot, Myriam, CRC Sclérose en Plaques [Montpellier], Hôpital Gui de Chauliac [Montpellier]-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Hôpital Gui de Chauliac [Montpellier]-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Economic Evaluation Unit [Montpellier], Laboratoire de Biochimie – Protéomique Clinique [Montpellier] (LBPC), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Siemens Healthcare [Lausanne, Suisse], and Université de Lausanne (UNIL)
Subjects: Male, 0301 basic medicine, [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, Neuroimmunology, lcsh:Medicine, Disease, Severity of Illness Index, Gastroenterology, 0302 clinical medicine, Cerebrospinal fluid, Neurofilament Proteins, Medicine, lcsh:Science, [SDV.BBM.BC] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biochemistry [q-bio.BM], Multidisciplinary, medicine.diagnostic_test, Brain, Middle Aged, Multiple Sclerosis, Chronic Progressive, Magnetic Resonance Imaging, White Matter, biomarker, Biomarker (medicine), Female, damage, Adult, medicine.medical_specialty, Neurofilament, Context (language use), neurofilament, Article, Multiple sclerosis, 03 medical and health sciences, Multiple Sclerosis, Relapsing-Remitting, Internal medicine, Glial Fibrillary Acidic Protein, Severity of illness, Humans, [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biochemistry [q-bio.BM], business.industry, lcsh:R, [SDV.NEU.NB] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, Magnetic resonance imaging, medicine.disease, cerebrospinal-fluid, Cross-Sectional Studies, 030104 developmental biology, neuronal markers, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, lcsh:Q, business, 030217 neurology & neurosurgery
Abstract: Neurofilament light chain (NfL) has been demonstrated to correlate with multiple sclerosis disease severity as well as treatment response. Nevertheless, additional serum biomarkers are still needed to better differentiate disease activity from disease progression. The aim of our study was to assess serum glial fibrillary acid protein (s-GFAP) and neurofilament light chain (s-NfL) in a cohort of 129 multiple sclerosis (MS) patients. Eighteen primary progressive multiple sclerosis (PPMS) and 111 relapsing remitting MS (RRMS) were included. We showed that these 2 biomarkers were significantly correlated with each other (R = 0.72, p p = 0.008). Finally, s-GFAP was correlated with white matter lesion load and inversely correlated with WM and GM volume. Our results seem to confirm the added value of s-GFAP in the context of multiple sclerosis.
Published: 2020

29. Interplay between primary familial brain calcification-associated SLC20A2 and XPR1 phosphate transporters requires inositol polyphosphates for control of cellular phosphate homeostasis

Author: Uriel López-Sánchez, Snejana Jurici, Miranda S. C. Wilson, Marc Sitbon, Valérie Courgnaud, Jean-Luc Battini, Gaël Nicolas, Xavier Ayrignac, Adolfo Saiardi, Sandrine Tury, Institut de Génétique Moléculaire de Montpellier (IGMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Pharmacogenomics Unit [Paris], Department of Genetics [Paris], Institut Curie [Paris]-Institut Curie [Paris], Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche sur l'Inflammation (CRI (UMR_S_1149 / ERL_8252 / U1149)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Department of Medical Genetics, Faculty of Medicine-Child and Family Research Institute-Centre for Molecular Medicine and Therapeutics-University of British Columbia (UBC), CRC Sclérose en Plaques [Montpellier], Département de neurologie [Montpellier], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [Montpellier]-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [Montpellier]-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), MRC-Cell Biology Unit, MRC-Laboratory for Molecular Cell Biology, Courgnaud, Valerie, and Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)
Subjects: 0301 basic medicine, Inositol Phosphates, [SDV]Life Sciences [q-bio], Cellular homeostasis, Biochemistry, Pyrophosphate, Cell Line, Receptors, G-Protein-Coupled, 03 medical and health sciences, chemistry.chemical_compound, Adenosine Triphosphate, Homeostasis, Humans, Inositol, Inositol phosphate, Molecular Biology, ComputingMilieux_MISCELLANEOUS, chemistry.chemical_classification, Phosphotransferases (Phosphate Group Acceptor), 030102 biochemistry & molecular biology, Sodium-Phosphate Cotransporter Proteins, Type III, Chemistry, Cell Biology, Phosphate, Cell biology, Solute carrier family, [SDV] Life Sciences [q-bio], 030104 developmental biology, Receptors, Virus, Efflux, Xenotropic and Polytropic Retrovirus Receptor
Abstract: Solute carrier family 20 member 2 (SLC20A2) and xenotropic and polytropic retrovirus receptor 1 (XPR1) are transporters with phosphate uptake and efflux functions, respectively. Both are associated with primary familial brain calcification (PFBC), a genetic disease characterized by cerebral calcium-phosphate deposition and associated with neuropsychiatric symptoms. The association of the two transporters with the same disease suggests that they jointly regulate phosphate fluxes and cellular homeostasis, but direct evidence is missing. Here, we found that cross-talk between SLC20A2 and XPR1 regulates phosphate homeostasis, and we identified XPR1 as a key inositol polyphosphate (IP)-dependent regulator of this process. We found that overexpression of WT SLC20A2 increased phosphate uptake, as expected, but also unexpectedly increased phosphate efflux, whereas PFBC-associated SLC20A2 variants did not. Conversely, SLC20A2 depletion decreased phosphate uptake only slightly, most likely compensated for by the related SLC20A1 transporter, but strongly decreased XPR1-mediated phosphate efflux. The SLC20A2-XPR1 axis maintained constant intracellular phosphate and ATP levels, which both increased in XPR1 KO cells. Elevated ATP levels are a hallmark of altered inositol pyrophosphate (PP-IP) synthesis, and basal ATP levels were restored after phosphate efflux rescue with WT XPR1 but not with XPR1 harboring a mutated PP-IP–binding pocket. Accordingly, inositol hexakisphosphate kinase 1-2 (IP6K1-2) gene inactivation or IP6K inhibitor treatment abolished XPR1-mediated phosphate efflux regulation and homeostasis. Our findings unveil an SLC20A2-XPR1 interplay that depends on IPs such as PP-IPs and controls cellular phosphate homeostasis via the efflux route, and alteration of this interplay likely contributes to PFBC.
Published: 2020

30. Multiple sclerosis lesions in motor tracts from brain to cervical cord: spatial distribution and correlation with disability

Author: Bertrand Audoin, Tobias Granberg, Yasuhiko Tachibana, Massimo Filippi, Charley Gros, Xavier Ayrignac, Masaaki Hori, Francesca Galassi, Gilles Edan, Julien Cohen-Adad, Govind Nair, Nicolas Collongues, Lydia Chougar, Anne Kerbrat, Jennifer Lefeuvre, Leszek Stawiarz, Renxin Chu, Daniel S. Reich, Rohit Bakshi, Russell Ouellette, Adil Maarouf, Clarisse Carra-Dalliere, Jean Pelletier, Jan Hillert, Jérôme De Seze, Benoît Combès, Atef Badji, Pierre Labauge, Elise Bannier, Paola Valsasina, Maria A. Rocca, Jason F. Talbott, Kouhei Kamiya, Josefina Maranzano, Raphaël Chouteau, Virginie Callot, École Polytechnique de Montréal (EPM), Unité de Neuroimagerie Fonctionnelle [Montréal] (UNF-CRIUGM), Université de Montréal (UdeM)-Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal (CRIUGM), Empenn, Institut National de la Santé et de la Recherche Médicale (INSERM)-Inria Rennes – Bretagne Atlantique, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-SIGNAUX ET IMAGES NUMÉRIQUES, ROBOTIQUE (IRISA-D5), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Bretagne Sud (UBS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Université de Rennes (UNIV-RENNES)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Rennes (UNIV-RENNES)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Rennes (ENS Rennes)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Université de Rennes (UNIV-RENNES), Département de Radiologie [CHU de Rennes], Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Service de Neurologie [CHU Rennes], CHU Pontchaillou [Rennes], Département de neurologie [Montpellier], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [Montpellier]-Université de Montpellier (UM), Montreal Neurological Institute and Hospital, McGill University = Université McGill [Montréal, Canada], Université du Québec à Trois-Rivières (UQTR), Department of Clinical Neuroscience [Sotckholm], Karolinska Institutet [Stockholm], Department of Radiology and Biomedical Imaging [San Francisco], University of California [San Francisco] (UCSF), University of California-University of California, National Institute of Radiological Sciences (NIRS), Toho University Omori Medical Center [Tokyo], Service de Neuroradiologie [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université, National Institutes of Health [Bethesda] (NIH), Universita Vita Salute San Raffaele = Vita-Salute San Raffaele University [Milan, Italie] (UniSR), Centro San Giovanni di Dio, Fatebenefratelli, Brescia (IRCCS), Università degli Studi di Brescia [Brescia], Brigham & Women’s Hospital [Boston] (BWH), Harvard Medical School [Boston] (HMS), Centre d'Exploration Métabolique par Résonance Magnétique [Hôpital de la Timone - AP-HM] (CEMEREM), Centre de résonance magnétique biologique et médicale (CRMBM), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Centre National de la Recherche Scientifique (CNRS)- Hôpital de la Timone [CHU - APHM] (TIMONE), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Centre National de la Recherche Scientifique (CNRS), Hôpital de la Timone [CHU - APHM] (TIMONE), Biopathologie de la Myéline, Neuroprotection et Stratégies Thérapeutiques (BMNST), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Strasbourg (UNISTRA), CIC Strasbourg (Centre d’Investigation Clinique Plurithématique (CIC - P) ), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Nouvel Hôpital Civil de Strasbourg-Hôpital de Hautepierre [Strasbourg], Fondation pour l'Aide à la Recherche sur la Sclérose en Plaques, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Vetenskapsrådet, Hjärnfonden, Doctoral TransMedTech, French Hospital Program of Clinical Research, PHRC, Université de Bretagne Sud (UBS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure - Rennes (ENS Rennes)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-CentraleSupélec-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Bretagne Sud (UBS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-École normale supérieure - Rennes (ENS Rennes)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Assistance Publique - Hôpitaux de Marseille (APHM)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-Assistance Publique - Hôpitaux de Marseille (APHM)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)- Hôpital de la Timone [CHU - APHM] (TIMONE), Assistance Publique - Hôpitaux de Marseille (APHM)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Strasbourg (UNISTRA)-Hôpital de Hautepierre [Strasbourg]-Nouvel Hôpital Civil de Strasbourg, Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Rennes 1 (UR1), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Hôpital Gui de Chauliac [Montpellier]-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Université Montpellier 1 (UM1)-Université de Montpellier (UM), Neuroimagerie: méthodes et applications (Empenn), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Université de Rennes (UR), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), University of California [San Francisco] (UC San Francisco), University of California (UC)-University of California (UC), Università degli Studi di Brescia = University of Brescia (UniBs), Hôpital de la Timone [CHU - APHM] (TIMONE)-Centre de résonance magnétique biologique et médicale (CRMBM), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Jonchère, Laurent, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Centre d'Exploration Métabolique par Résonance Magnétique [Hôpital de la Timone - APHM] (CEMEREM), Kerbrat, A., Gros, C., Badji, A., Bannier, E., Galassi, F., Combes, B., Chouteau, R., Labauge, P., Ayrignac, X., Carra-Dalliere, C., Maranzano, J., Granberg, T., Ouellette, R., Stawiarz, L., Hillert, J., Talbott, J., Tachibana, Y., Hori, M., Kamiya, K., Chougar, L., Lefeuvre, J., Reich, D. S., Nair, G., Valsasina, P., Rocca, M. A., Filippi, M., Chu, R., Bakshi, R., Callot, V., Pelletier, J., Audoin, B., Maarouf, A., Collongues, N., De Seze, J., Edan, G., and Cohen-Adad, J.
Subjects: Adult, Male, corticospinal tract, Pathology, medicine.medical_specialty, Cord, Pyramidal Tracts, multiple sclerosis, 030218 nuclear medicine & medical imaging, Lesion, Disability Evaluation, 03 medical and health sciences, 0302 clinical medicine, medicine, Humans, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], 10. No inequality, Retrospective Studies, [SDV.IB] Life Sciences [q-bio]/Bioengineering, Clinically isolated syndrome, Expanded Disability Status Scale, business.industry, Multiple sclerosis, Brain, Cervical Cord, Original Articles, Middle Aged, Spinal cord, medicine.disease, Magnetic Resonance Imaging, medicine.anatomical_structure, disability, Corticospinal tract, Disease Progression, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], Female, [SDV.IB]Life Sciences [q-bio]/Bioengineering, Neurology (clinical), Brainstem, medicine.symptom, business, 030217 neurology & neurosurgery, MRI
Abstract: Despite important efforts to solve the clinico-radiological paradox, correlation between lesion load and physical disability in patients with multiple sclerosis remains modest. One hypothesis could be that lesion location in corticospinal tracts plays a key role in explaining motor impairment. In this study, we describe the distribution of lesions along the corticospinal tracts from the cortex to the cervical spinal cord in patients with various disease phenotypes and disability status. We also assess the link between lesion load and location within corticospinal tracts, and disability at baseline and 2-year follow-up. We retrospectively included 290 patients (22 clinically isolated syndrome, 198 relapsing remitting, 39 secondary progressive, 31 primary progressive multiple sclerosis) from eight sites. Lesions were segmented on both brain (T2-FLAIR or T2-weighted) and cervical (axial T2- or T2*-weighted) MRI scans. Data were processed using an automated and publicly available pipeline. Brain, brainstem and spinal cord portions of the corticospinal tracts were identified using probabilistic atlases to measure the lesion volume fraction. Lesion frequency maps were produced for each phenotype and disability scores assessed with Expanded Disability Status Scale score and pyramidal functional system score. Results show that lesions were not homogeneously distributed along the corticospinal tracts, with the highest lesion frequency in the corona radiata and between C2 and C4 vertebral levels. The lesion volume fraction in the corticospinal tracts was higher in secondary and primary progressive patients (mean = 3.6 ± 2.7% and 2.9 ± 2.4%), compared to relapsing-remitting patients (1.6 ± 2.1%, both P
Published: 2020

31. Sequential allogeneic hematopoietic stem cell transplantation for active refractory/relapsed myeloid malignancies: results of a reduced-intensity conditioning preceded by clofarabine and cytosine arabinoside, a retrospective study on behalf of the SFGM-TC

Author: Natacha Maillard, Sylvain Chantepie, Tony Marchand, Myriam Labopin, Régis Peffault de Latour, Ibrahim Yakoub-Agha, Karin Bilger, Didier Blaise, Pascal Turlure, Marie C. Béné, Société Francophone de Greffe de Moelle et de Thérapie Cellulaire, Mohamad Mohty, Marie-Thérèse Rubio, Patrice Chevallier, Stéphanie Nguyen, Edouard Forcade, Patrice Ceballos, Anne Huynh, Amandine Charbonnier, Ambroise Marçais, Amandine Le Bourgeois, Thierry Guillaume, Centre hospitalier universitaire de Nantes (CHU Nantes), CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Pathologies biliaires, fibrose et cancer du foie [CRSA], Centre de Recherche Saint-Antoine (CRSA), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service d'Hémato-oncologie [CHU Saint-Louis], Groupe Hospitalier Saint Louis - Lariboisière - Fernand Widal [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), CHU Pitié-Salpêtrière [AP-HP], Hôpital de la Milétrie, Centre hospitalier universitaire de Poitiers (CHU Poitiers), CHU Bordeaux [Bordeaux], Lille Inflammation Research International Center - U 995 (LIRIC), Institut Pasteur de Lille, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Service d'Hématologie, Immunologie et de Thérapie Cellulaire (HITC), Université de Rennes (UR)-Hôpital Pontchaillou-CHU Pontchaillou [Rennes], Département d'Oncologie et Hématologie [Strasbourg], Les Hôpitaux Universitaires de Strasbourg (HUS), Service d'hématologie et oncologie médicale, Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Lapeyronie-Université de Montpellier (UM), CHU Amiens-Picardie, CHU Limoges, Service d'Hématologie [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Service d'hématologie clinique et de thérapie cellulaire [CHU Saint-Antoine], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), Pathologies biliaires, fibrose et cancer du foie [CHU Saint-Antoine], Centre de Recherche Saint-Antoine (CR Saint-Antoine), Sorbonne Université (SU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Service d'Hématologie clinique [CHU Pitié-Salpêtrière], CHU Toulouse [Toulouse], Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-CHU Pontchaillou [Rennes], Hôpital Lapeyronie-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Université Montpellier 1 (UM1)-Université de Montpellier (UM), Centre de Recherche en Cancérologie de Marseille (CRCM), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Aix Marseille Université (AMU), Aix Marseille Université (AMU)-Institut Paoli-Calmettes, and Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Adult, Male, Oncology, medicine.medical_specialty, Transplantation Conditioning, Adolescent, Cyclophosphamide, medicine.medical_treatment, Population, [SDV.CAN]Life Sciences [q-bio]/Cancer, Hematopoietic stem cell transplantation, Disease-Free Survival, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, Antineoplastic Combined Chemotherapy Protocols, medicine, Humans, Clofarabine, education, ComputingMilieux_MISCELLANEOUS, Aged, Retrospective Studies, Chemotherapy, education.field_of_study, business.industry, Cytarabine, Hematopoietic Stem Cell Transplantation, Hematology, General Medicine, Middle Aged, Allografts, 3. Good health, Survival Rate, Transplantation, Leukemia, Myeloid, Acute, Regimen, Myelodysplastic Syndromes, 030220 oncology & carcinogenesis, [SDV.IMM]Life Sciences [q-bio]/Immunology, Female, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Busulfan, 030215 immunology, medicine.drug
Abstract: Allogeneic stem cell transplantation (allo-SCT) represents the most beneficial treatment for patients with active relapsed/refractory (R/R) hematologic malignancies. Recently, sequential regimens combining debulking chemotherapy followed by reduced-intensity conditioning (RIC) have shown encouraging results for these patients. In this retrospective study, we report the extended results of a sequential regimen of clofarabine, cytosine arabinoside, and RIC in 131 adults with active R/R myeloid disease at transplant. Conditioning consisted of clofarabine (30 mg/m2/day) and cytosine arabinoside (1 g/m2/day) for 5 days, followed, after a rest of 3 days, by an RIC combining cyclophosphamide (60 mg/kg) for 1 day, iv busulfan (3.2 mg/kg/day) for 2 days, and anti-thymocyte globulin (2.5 mg/kg/day) for 2 days. Between 2007 and 2016, 131 patients (males n = 75, median age: 52.6 years) were identified from the SFGM-TC registry. There were 111 acute myeloid leukemia (AML) patients and 20 cases with myelodysplastic or myeloproliferative syndrome. Status at transplant was known for all but 4 patients and was primary refractory (n = 81) and 1st or 2nd relapse (n = 46). All patients received allo-SCT from a matched donor (sibling n = 64, unrelated n = 67). Engraftment was observed in 105/122 (86%) evaluable cases and 63% of the patients achieved complete remission (CR) after transplant. The 1-year overall survival, disease-free survival, relapse incidence, non-relapse mortality, and graft-versus-host disease-free/relapse-free survival were 39.2%, 28.1%, 41.0%, 30.8%, and 22.2%, respectively. This study confirms that this sequential clofarabine-based regimen provides a high CR rate in this critical population, although relapse remains a matter of concern.
Published: 2020

32. Value Creation and Value Appropriation in Innovative Coopetition Projects

Author: Jonathan Maurice, Marc Willinger, Paul Chiambaretto, Toulouse School of Economics (TSE), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-École des hautes études en sciences sociales (EHESS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Montpellier Research in Management (MRM), Université Montpellier 1 (UM1)-Université Paul-Valéry - Montpellier 3 (UM3)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Perpignan Via Domitia (UPVD)-Groupe Sup de Co Montpellier (GSCM) - Montpellier Business School-Université de Montpellier (UM), Toulouse School of Management Research (TSM), Université Toulouse 1 Capitole (UT1)-Centre National de la Recherche Scientifique (CNRS)-Toulouse School of Management (TSM), Centre d'Economie de l'Environnement - Montpellier - FRE2010 (CEE-M), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université Paul-Valéry - Montpellier 3 (UPVM)-Université de Perpignan Via Domitia (UPVD)-Groupe Sup de Co Montpellier (GSCM) - Montpellier Business School-Université de Montpellier (UM), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Toulouse School of Management (TSM), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Centre d'Economie de l'Environnement - Montpellier - UMR 5211 (CEE-M), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université Montpellier 1 (UM1)-Groupe Sup de Co Montpellier (GSCM) - Montpellier Business School-Université Paul-Valéry - Montpellier 3 (UPVM)-Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Perpignan Via Domitia (UPVD), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
Subjects: game theory, lcsh:Management. Industrial management, Strategy and Management, value creation, lcsh:Business, Value appropriation, Profit (economics), C- GESTION, 0502 economics and business, innovative coopetition projects, 050207 economics, Industrial organization, Value creation, 05 social sciences, Coopetition, value appropriation, [SHS.ECO]Humanities and Social Sciences/Economics and Finance, coopetition, General Business, Management and Accounting, Focal firm, Dilemma, lcsh:HD28-70, [SHS.GESTION]Humanities and Social Sciences/Business administration, Business, lcsh:HF5001-6182, Game theory, 050203 business & management
Abstract: National audience; This article provides a formal model of the value creation-appropriation dilemma in coopetition for innovation, that is, alliances among competing firms. The model determines the levels of cooperation that maximize the profit of each firm in an innovative coopetition agree¬ment regardless of the number of firms and their respective budget endowments dedicated to the coopetitive project. We answer the following questions: within an innovative coopetition agreement, will the partners cooperate more or less when their budget endowments change? What is the impact on profit? When is it profitable to accept a new partner into the agreement? What happens to the remaining firms when a partner withdraws from the agreement? We show that when the coopetitive budget of the focal firm increases, the focal firm allocates a larger part of this budget to value creation activities and increases its profit. In contrast, when a partnering firm increases its coopetitive budget, the focal firm reduces its budget for value creation activities to maintain a sufficient budget for value appropriation activities. We also show that the addition of a competitor with a large coopetitive budget to the innovative coopetition agreement decreases the cooperation of the focal firm but increases the profit of the initial partnering firms. In contrast, the exit of a partnering firm with a large coopetitive budget from the agreement intensifies the cooperation among the remaining firms but reduces their profit. competing firms. The model determines the levels of cooperation that maximize the profit of each firm in an innovative coopetition agreementregardless of the number of firms and their respective budget endowments dedicated to the coopetitive project. We answer thefollowing questions: within an innovative coopetition agreement, will the partners cooperate more or less when their budget endowmentschange? What is the impact on profit? When is it profitable to accept a new partner into the agreement? What happens to the remainingfirms when a partner withdraws from the agreement? We show that when the coopetitive budget of the focal firm increases, the focal firmallocates a larger part of this budget to value creation activities and increases its profit. In contrast, when a partnering firm increases itscoopetitive budget, the focal firm reduces its budget for value creation activities to maintain a sufficient budget for value appropriationactivities. We also show that the addition of a competitor with a large coopetitive budget to the innovative coopetition agreementdecreases the cooperation of the focal firm but increases the profit of the initial partnering firms. In contrast, the exit of a partnering firmwith a large coopetitive budget from the agreement intensifies the cooperation among the remaining firms but reduces their profit.
Published: 2020

33. Somatic assessment of one hundred inpatients in a psychiatric crisis unit: A retrospective observational study

Author: L. Picy, G. Choron, F.-X. Lesage, P. Courtet, Emilie Olié, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Dynamique des capacités humaines et des conduites de santé (EPSYLON), Université de Montpellier (UM)-Université Paul-Valéry - Montpellier 3 (UPVM)-Université Montpellier 1 (UM1), Neuropsychiatrie : recherche épidémiologique et clinique (PSNREC), Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Montpellier 1 (UM1)-Université Paul-Valéry - Montpellier 3 (UPVM)-Université de Montpellier (UM), and Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)
Subjects: Adult, Male, Risque cardiovasculaire, medicine.medical_specialty, Adolescent, Comorbidity, Mortalité, Mental disorders, Health status, Unit (housing), Young Adult, [SCCO]Cognitive science, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Arts and Humanities (miscellaneous), medicine, Humans, Mortality, Psychiatry, Aged, Retrospective Studies, Inpatients, Emergency Services, Psychiatric, business.industry, Retrospective cohort study, Middle Aged, Cardiovascular risk, medicine.disease, État de santé, 3. Good health, 030227 psychiatry, Hospitalization, Psychiatry and Mental health, Heart Disease Risk Factors, [SDV.MHEP.PSM]Life Sciences [q-bio]/Human health and pathology/Psychiatrics and mental health, Troubles mentaux, Female, France, Comorbidité, business
Abstract: International audience; OBJECTIVES:Compared to the general population, psychiatric patients are more exposed to physical illness but have reduced access to care.METHODS:We conducted a descriptive study in Montpellier between November 2011, 2nd and December 2012, 21st. Every Wednesday and Friday, the last two inpatients admitted in the psychiatric post-emergency unit of the University Hospital of Montpellier were assessed by a general practitioner and included in the study. This unit takes care of suicidal patients suffering from mood and/or personality disorders. The general practitioner assessed lifetime somatic history, current somatic comorbidities and medical follow-up for non-psychiatric issues.RESULTS:One hundred patients were included. The sample consisted of 81% women with a mean age of 43 years (18-79 years). The majority of patients had a lifetime history of somatic disease (96%) and was followed by a general practitioner (99%). Six patients had no met general practitioner for at least one year. Dyslipidemia was reported in 32 patients, among those only one patient was on lipid-lowering drug (96.88%). Among patients with impaired dental condition, 29 (55.77%) had not met a dentist for at least one year. Among those with impaired near visual acuity and/or impaired distance visual acuity, 19 (65.52%) had not met an ophthalmologist for at least one year.CONCLUSION:Although detected, somatic comorbidities seem outsourced in psychiatric patients. Greater awareness among different health professionals about the medical care of such patients could improve healthcare management and life expectancy
Published: 2020

34. Guidelines: Anaesthesia in the context of COVID-19 pandemic

Author: Lionel Velly, Etienne Gayat, Hervé Quintard, Emmanuel Weiss, Audrey De Jong, Philippe Cuvillon, Gérard Audibert, Julien Amour, Marc Beaussier, Matthieu Biais, Sébastien Bloc, Marie Pierre Bonnet, Pierre Bouzat, Gilles Brezac, Claire Dahyot-Fizelier, Souhayl Dahmani, Mathilde de Queiroz, Sophie Di Maria, Claude Ecoffey, Emmanuel Futier, Thomas Geeraerts, Haithem Jaber, Laurent Heyer, Rim Hoteit, Olivier Joannes-Boyau, Delphine Kern, Olivier Langeron, Sigismond Lasocki, Yoan Launey, Frederic le Saché, Anne Claire Lukaszewicz, Axel Maurice-Szamburski, Nicolas Mayeur, Fabrice Michel, Vincent Minville, Sébastien Mirek, Philippe Montravers, Estelle Morau, Laurent Muller, Jane Muret, Karine Nouette-Gaulain, Jean Christophe Orban, Gilles Orliaguet, Pierre François Perrigault, Florence Plantet, Julien Pottecher, Christophe Quesnel, Vanessa Reubrecht, Bertrand Rozec, Benoit Tavernier, Benoit Veber, Francis Veyckmans, Hélène Charbonneau, Isabelle Constant, Denis Frasca, Marc-Olivier Fischer, Catherine Huraux, Alice Blet, Marc Garnier, Assistance Publique - Hôpitaux de Marseille (APHM), Marqueurs cardiovasculaires en situation de stress (MASCOT (UMR_S_942 / U942)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Groupe Hospitalier Saint Louis - Lariboisière - Fernand Widal [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Université Sorbonne Paris Nord, Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Institut de pharmacologie moléculaire et cellulaire (IPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA), Hôpital Universitaire Carémeau [Nîmes] (CHU Nîmes), Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Service d'Anesthésie et Réanimation [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Service de Cardiologie [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Institut Mutualiste de Montsouris (IMM), Biologie des maladies cardiovasculaires = Biology of Cardiovascular Diseases, Université de Bordeaux (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Hôpital Pellegrin, CHU Bordeaux [Bordeaux]-Groupe hospitalier Pellegrin, Equipe 1 : EPOPé - Épidémiologie Obstétricale, Périnatale et Pédiatrique (CRESS - U1153), Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité (CRESS (U1153 / UMR_A_1125 / UMR_S_1153)), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Université Sorbonne Paris Cité (USPC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Université Sorbonne Paris Cité (USPC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Neuro-imagerie fonctionnelle et métabolique (ANTE-INSERM U836, équipe 5), Grenoble Institut des Neurosciences (GIN), Université Joseph Fourier - Grenoble 1 (UJF)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre hospitalier universitaire de Poitiers (CHU Poitiers), Pharmacologie des anti-infectieux (PHAR), Université de Poitiers-Institut National de la Santé et de la Recherche Médicale (INSERM), Service d'anesthésie-réanimation, Hôpital Femme Mère Enfant [CHU - HCL] (HFME), Hospices Civils de Lyon (HCL)-Hospices Civils de Lyon (HCL), Service d'anesthésie réanimation chirurgicale [Rennes], Hôpital Pontchaillou-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Nutrition, Métabolismes et Cancer (NuMeCan), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Clermont-Ferrand, CHU Toulouse [Toulouse], Service Anesthésie - Réanimation [Bordeaux], CHU Bordeaux [Bordeaux], Physiopathologie et Pharmacologie Clinique de la Douleur, Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut National de la Santé et de la Recherche Médicale (INSERM), Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service d'Anesthésie-Réanimation [AP-HP Hôpitaux Saint-Louis Lariboisière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Lariboisière-Fernand-Widal [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Clinique Juge - Clinique du sport [Marseille], Pôle d'Anesthésie-Réanimation [CHU Rangueil], CHU Toulouse [Toulouse]-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Hôpital de Rangueil, Hôpital de la Timone [CHU - APHM] (TIMONE), Service d'anesthésie - réanimation chirurgicale [CHU de Dijon], Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Département d'Anesthésie Réanimation, AP-HP - Hôpital Bichat - Claude Bernard [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Unité de réanimation médicale [CHU de Carémeau, Nîmes], Institut Curie [Paris], Réanimation Médico-Chirurgicale, Service d'Anesthésie Réanimation, CHU Necker - Enfants Malades [AP-HP], Département d'anesthésie-réanimation[Montpellier], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [Montpellier], Mitochondries, stress oxydant et protection musculaire (Strasbourg), Mitochondrie, stress oxydant et protection musculaire (MSP), Université de Strasbourg (UNISTRA)-Université de Strasbourg (UNISTRA), Physiopathologie et Epidemiologie de l'Insuffisance Respiratoire, Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre hospitalier universitaire de Nantes (CHU Nantes), Service de soins intensifs [CHU Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Groupe d’Anesthésie-Réanimation Chirurgie cardio-thoracique et vasculaire [Toulouse], Clinique Pasteur [Toulouse], CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Université de Poitiers - Faculté de Médecine et de Pharmacie, Université de Poitiers, Département d'anesthésiologie [CHU Caen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN), Physiopathologie et Epidémiologie des Maladies Respiratoires (PHERE (UMR_S_1152 / U1152)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Sorbonne Université (SU), Hôpital Beaujon [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Université Sorbonne Paris Nord, Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Université Sorbonne Paris Cité (USPC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Université Sorbonne Paris Cité (USPC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université de Rennes (UR)-Hôpital Pontchaillou, Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), MitoVasc - Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Pôle Anesthésie Réanimation [CHU de Toulouse], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [CHU Montpellier], Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Biomarqueurs CArdioNeuroVASCulaires (BioCANVAS), Université Paris 13 (UP13)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Histoire et Cultures de l'Antiquité et du Moyen Âge (HISCANT-MA), Université de Lorraine (UL), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Emergency Department, Université Bordeaux Segalen - Bordeaux 2-Hôpital Pellegrin - Bordeaux, Université Joseph Fourier - Grenoble 1 (UJF)-CHU Grenoble-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Joseph Fourier - Grenoble 1 (UJF)-CHU Grenoble-Institut National de la Santé et de la Recherche Médicale (INSERM), Anaesthesiology, Robert Debré Hospital, Service d'anesthésie réanimation chirurgicale, Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou, Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pitié-Salpêtrière [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Lariboisière-Université Paris Diderot - Paris 7 (UPD7), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Hôpital de Rangueil, Anthropologie bio-culturelle, Droit, Ethique et Santé (ADES), Aix Marseille Université (AMU)-EFS ALPES MEDITERRANEE-Centre National de la Recherche Scientifique (CNRS), Institut Cochin (IC UM3 (UMR 8104 / U1016)), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Physiopathologie mitochondriale, Université Bordeaux Segalen - Bordeaux 2-Institut National de la Santé et de la Recherche Médicale (INSERM), Unité Mixte de Recherches sur les Herbivores - UMR 1213 (UMRH), Institut National de la Recherche Agronomique (INRA)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Laboratoire d'Anesthésiologie, Université Pierre et Marie Curie - Paris 6 (UPMC), and Department of Anesthesia, Burn and Critical Care, University Hospitals Saint-Louis - Lariboisière, AP-HP, Paris, France.
Subjects: Infection prevention and control, [SDV]Life Sciences [q-bio], Psychological intervention, Airway management, Context (language use), Critical Care and Intensive Care Medicine, Article, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, 030202 anesthesiology, Informed consent, Personal protective equipment, Pandemic, Health care, Medicine, ComputingMilieux_MISCELLANEOUS, [SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases, Modalities, SARS-CoV-2, business.industry, COVID-19, 030208 emergency & critical care medicine, General Medicine, Guideline, 3. Good health, Anesthesiology and Pain Medicine, Universal precautions, Anesthesia, Viruses, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, business
Abstract: Objectives The world is currently facing an unprecedented healthcare crisis caused by the COVID-19 pandemic. The objective of these guidelines is to produce a framework to facilitate the partial and gradual resumption of intervention activity in the context of the COVID-19 pandemic. Methods The group has endeavoured to produce a minimum number of recommendations to highlight the strengths to be retained in the 7 predefined areas: (1) protection of staff and patients; (2) benefit/risk and patient information; (3) preoperative assessment and decision on intervention; (4) modalities of the preanaesthesia consultation; (5) specificity of anaesthesia and analgesia; (6) dedicated circuits and (7) containment exit type of interventions. Results The SFAR Guideline panel provides 51 statements on anaesthesia management in the context of COVID-19 pandemic. After one round of discussion and various amendments, a strong agreement was reached for 100% of the recommendations and algorithms. Conclusion We present suggestions for how the risk of transmission by and to anaesthetists can be minimised and how personal protective equipment policies relate to COVID-19 pandemic context.
Published: 2020

35. Crystal Structure, Lattice Dynamics, and Thermodynamic Properties of a Thermoelectric Orthorhombic BaCu2Se2 Compound

Author: Romain Viennois, David Berardan, Catalin Popescu, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2), Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), and Institut de Chimie du CNRS (INC)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
Subjects: Lattice dynamics, Work (thermodynamics), Materials science, Chalcogenide, Synchrotron X-Ray Diffraction, Ab initio, 02 engineering and technology, Crystal structure, thermoelectric, 010402 general chemistry, 7. Clean energy, 01 natural sciences, chalcogenide, Condensed Matter::Materials Science, chemistry.chemical_compound, Condensed Matter::Superconductivity, Thermoelectric effect, [CHIM]Chemical Sciences, Physical and Theoretical Chemistry, ComputingMilieux_MISCELLANEOUS, Condensed matter physics, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, General Energy, chemistry, Condensed Matter::Strongly Correlated Electrons, Orthorhombic crystal system, lattice dynamics, 0210 nano-technology
Abstract: International audience; In the present work, we report a combined experimental and ab-initio study of the crystal structure, lattice dynamics and thermodynamic properties of the thermoelectric orthorhombic BaCu2Se2 compound. The thermal and pressure evolution of the crystal structure is obtained using synchrotron XRD experiments. The lattice dynamics is studied through Raman scattering experiments and ab-initio supercell calculations and reveals that the lowest Raman-active and infrared-active optical modes are at about 50 cm-1 (7 meV) and the presence of an optically silent low-energy optical mode at about 5 meV. From the determination of the heat capacity, the thermal expansion and the bulk modulus, a Grüneisen parameter of about 2.03 is estimated. This rather large value together with the presence of low energy optical modes and rather low Debye temperature in orthorhombic BaCu2Se2 can explain its low thermal conductivity. Additionally, we have also studied the lattice dynamics, the thermodynamic properties and the stability of the metastable tetragonal BaCu2Se2 against the stable orthorhombic phase and found that it might be stabilized at high temperature or high pressure.
Published: 2020

36. Antiwindup Input–Output Linearization Strategy for the Control of a Multistage Continuous Fermenter With Input Constraints

Author: Jérôme Harmand, Alain Rapaport, Marc Perez, Jean-Marie Sablayrolles, Denis Dochain, Céline Casenave, UCL - SST/ICTM/INMA - Pôle en ingénierie mathématique, Mathématiques, Informatique et STatistique pour l'Environnement et l'Agronomie (MISTEA), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA), Sciences Pour l'Oenologie (SPO), Université Montpellier 1 (UM1)-Institut de Recherche pour le Développement (IRD [Nouvelle-Calédonie])-Institut National de la Recherche Agronomique (INRA)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), ICTEAM, Université Catholique de Louvain (UCL), Laboratoire de Biotechnologie de l'Environnement [Narbonne] (LBE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Université Catholique de Louvain = Catholic University of Louvain (UCL), 7th Framework Program of the European Union through the Computer-Aided Food Processes for Control Engineering Project-Large Collaborative Project : KBBE-2007-2-3-01, Caracterisation et elaboration des produits issus de l'agriculture (CEPIA) Division of French National Institute for Agricultural Research (INRA), and Institut National de la Recherche Agronomique (INRA)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut de Recherche pour le Développement (IRD [Nouvelle-Calédonie])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)
Subjects: 0209 industrial biotechnology, [SDV.BIO]Life Sciences [q-bio]/Biotechnology, Computer science, control design, Control variable, 02 engineering and technology, anti-windup, 020901 industrial engineering & automation, Linearization, Control theory, [SDV.IDA]Life Sciences [q-bio]/Food engineering, cascade of reactors, 0202 electrical engineering, electronic engineering, information engineering, Process control, State observer, Electrical and Electronic Engineering, Antiwindup, 020208 electrical & electronic engineering, Process (computing), Kalman filter, input-output linearization, Nonlinear system, wine fermentation, Control and Systems Engineering, Cascade, [MATH.MATH-OC]Mathematics [math]/Optimization and Control [math.OC], varying input constraints, cascade of reactors control design
Abstract: International audience; The present paper deals with the control of a Multi-Stage Continuous Fermenter (MSCF) used for the study of wine fermentation. The control design is facing three main difficulties: (1) system nonlinearity; (2) lack of on-line measurement of the controlled variable (sugar concentration); (3) positive constraints on the control inputs (inlet flow rates of each tank) coming from the cascade structure of the system. A control strategy has been proposed that accounts for these specificities. It is based on an input-output linearization control law coupled with an anti-windup technique and a state observer (Kalman filter). The strategy has been tested and validated first on numerical simulations and has then been applied to the real process. The experiments gave satisfactory results that open up new perspectives on the use of the MSCF.
Published: 2020

37. Formation of a Single‐Crystal Aluminum‐Based MOF Nanowire with Graphene Oxide Nanoscrolls as Structure‐Directing Agents

Author: Damien Aureau, Nicolas Menguy, Anusha Lalitha, Saad Sene, Christian Serre, Lucie Rivier, Imène Esteve, Nathalie Steunou, Mathieu Fregnaux, Guillaume Maurin, Naseem A. Ramsahye, Mégane Muschi, Clémence Sicard, Sabine Devautour-Vinot, Institut des Matériaux Poreux de Paris (IMAP ), Département de Chimie - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Institut Lavoisier de Versailles (ILV), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut des Matériaux Poreux de Paris (IMAP UMR8004 FRE2000), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS), Institut de minéralogie et de physique des milieux condensés (IMPMC), Université Pierre et Marie Curie - Paris 6 (UPMC)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de recherche pour le développement [IRD] : UR206-Centre National de la Recherche Scientifique (CNRS), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de recherche pour le développement [IRD] : UR206-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Materials science, Nanostructure, Oxide, Nanowire, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Catalysis, law.invention, chemistry.chemical_compound, X-ray photoelectron spectroscopy, law, [CHIM]Chemical Sciences, [CHIM.COOR]Chemical Sciences/Coordination chemistry, ComputingMilieux_MISCELLANEOUS, 010405 organic chemistry, Graphene, [CHIM.MATE]Chemical Sciences/Material chemistry, General Chemistry, General Medicine, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Chemical engineering, Electron diffraction, chemistry, Self-assembly, 0210 nano-technology, Single crystal
Abstract: International audience; Here we propose an innovative strategy to synthesize single-crystal nanowires (NWs) of the Al 3+ dicarboxylate MIL-69(Al) MOF by using graphene oxide nanoscrolls as structure directing agents. MIL-69(Al) NWs with an average diameter of 70 ± 20 nm and lengths up to 2 m were found to preferentially grow along the [001] crystallographic direction. Advanced characterization tools (electron diffraction, TEM, STEM-HAADF, SEM, XPS) and molecular modelling revealed the mechanism of formation of MIL-69(Al) NWs involving size-confinement and templating effects. The formation of MIL-69(Al) seeds and the self-scroll of GO sheets followed by the anisotropic growth of MIL-69(Al) crystals are mediated by specific GO sheets/MOF interactions. This study delivers an unprecedented approach to control the design of 1D MOF nanostructures and superstructures.
Published: 2020

38. The endogenous galactofuranosidase GlfH1 hydrolyzes mycobacterial arabinogalactan

Author: Albertus Viljoen, Yann Guérardel, Alexandre Mery, Maju Joe, Laurent Kremer, Sydney A. Villaume, Emeline Fabre, Christophe Mariller, Kaoru Takegawa, Stéphane P. Vincent, Lin Shen, Todd L. Lowary, Iman Halloum, Loïc P. Chêne, Université de Lille, CNRS, Unité de Glycobiologie Structurale et Fonctionnelle - UMR 8576 [UGSF], Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576, Institut de Recherche en Infectiologie de Montpellier [IRIM], Université de Namur [Namur] [UNamur], University of Alberta, Unité de Glycobiologie Structurale et Fonctionnelle UMR 8576 [UGSF], Kyushu University, Institut National de la Santé et de la Recherche Médicale [INSERM], Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie Bio-Organic [Namur, Belgium], Université de Namur [Namur] (UNamur), Dynamique des interactions membranaires normales et pathologiques (DIMNP), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université Montpellier 1 (UM1), Kyushu University [Fukuoka], Unité de Glycobiologie Structurale et Fonctionnelle - UMR 8576 (UGSF), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Université de Namur [Namur], Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Université de Lille-Centre National de la Recherche Scientifique (CNRS), and Kremer, Laurent
Subjects: 0301 basic medicine, cell envelope, mycobacteria, [SDV]Life Sciences [q-bio], Sequence Homology, Glycobiology and Extracellular Matrices, Biochemistry, Galactans, Cell wall, Mycobacterium tuberculosis, 03 medical and health sciences, chemistry.chemical_compound, Arabinogalactan, galactofuranose, Glycoside hydrolase, Amino Acid Sequence, Amoeba, Molecular Biology, [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology, Phylogeny, chemistry.chemical_classification, polysaccharide, glycosidas, arabinogalactan, catabolism, galactofuranosidase, Rv3096, 030102 biochemistry & molecular biology, biology, Chemistry, Hydrolysis, Cell Biology, Galactan, biology.organism_classification, Galactosyltransferases, [SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, 3. Good health, [SDV] Life Sciences [q-bio], Kinetics, 030104 developmental biology, Enzyme, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, glycosidase, Cell envelope, [SDV.MP.BAC] Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, Biogenesis
Abstract: International audience; Despite the impressive progress made over the past 20 years in our understanding of mycolylarabinogalactan-peptidoglycan (mAGP) biogenesis, the mechanisms by which the tubercle bacillus Mycobacterium tuberculosis adapts its cell wall structure and /composition in response to various environmental conditions, especially during infection, remain poorly understood. Being the central portion of the mAGP complex, arabinogalactan (AG) is believed to be the constituent of the mycobacterial cell envelope that undergoes the least structural changes in its structure, but no reports exist supportings this assumption. Herein, using [MS2] recombinantly expressed mycobacterial protein, bioinformatics analyses, and kinetic and biochemical assays, we demonstrate that the AG can be remodeled by a mycobacterial endogenous enzyme. In particular, we identified found that the mycobacterial protein GlfH1 (Rv3096), which protein exhibits an exo-β-D-galactofuranose hydrolase activity and is capable of hydrolyzing the galactan chain of AG by recurrent cleavage of the terminal β-(1,5) and β-(1,6)-Galf linkages. The characterization of this galactosidase represents the a first step towards understanding the remodeling of mycobacterial AG.
Published: 2020

39. A new congenital multicore titinopathy associated with fast myosin heavy chain deficiency

Author: Robert Carlier, Mireille Cossée, Corinne Metay, Edoardo Malfatti, Pascale Richard, Norma B. Romero, Henk Granzier, Isabelle Richard, Michel Koenig, Elena Pegoraro, Aurélien Perrin, Tanya Stojkovic, Raul Juntas Morales, Marcello Villanova, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques (LGMR), IFR3, Université Montpellier 1 (UM1)-Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre de Recherche en Myologie, Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Institut de Myologie, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Association française contre les myopathies (AFM-Téléthon)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Unité de Recherche sur les Maladies Cardiovasculaires, du Métabolisme et de la Nutrition = Institute of cardiometabolism and nutrition (ICAN), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), Unité Fonctionnelle de Cardiogénétique et Myogénétique Moléculaire et Cellulaire, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Pitié-Salpêtrière [AP-HP], Service de Biochimie Métabolique et Centre de Génétique moléculaire et chromosomique [CHU Pitié Salpêtrière], Hôpital Raymond Poincaré [AP-HP], Handicap neuromusculaire : Physiopathologie, Biothérapie et Pharmacologies appliquées (END-ICAP), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut National de la Santé et de la Recherche Médicale (INSERM), Universita degli Studi di Padova, CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Approches génétiques intégrées et nouvelles thérapies pour les maladies rares (INTEGRARE), Université d'Évry-Val-d'Essonne (UEVE)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Saclay-Généthon, University of Arizona, Gestionnaire, Hal Sorbonne Université, Université Montpellier 1 (UM1)-IFR3, Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Centre de recherche en Myologie – U974 SU-INSERM, Unité de Recherche sur les Maladies Cardiovasculaires, du Métabolisme et de la Nutrition = Research Unit on Cardiovascular and Metabolic Diseases (ICAN), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)-Institut de Cardiométabolisme et Nutrition = Institute of Cardiometabolism and Nutrition [CHU Pitié Salpêtrière] (IHU ICAN), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-CHU Pitié-Salpêtrière [AP-HP], Università degli Studi di Padova = University of Padua (Unipd), and Centre National de la Recherche Scientifique (CNRS)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Association française contre les myopathies (AFM-Téléthon)-Sorbonne Université (SU)
Subjects: 0301 basic medicine, Gene isoform, Male, Fast myosin, Adolescent, [SDV]Life Sciences [q-bio], Child, Connectin, Deltoid Muscle, Female, Humans, Myosin Heavy Chains, Pedigree, Siblings, Muscular Diseases, Neurosciences. Biological psychiatry. Neuropsychiatry, macromolecular substances, Brief Communication, 03 medical and health sciences, 0302 clinical medicine, Myosin, Medicine, RC346-429, Messenger RNA, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, biology, business.industry, General Neuroscience, Phenotype, Cell biology, [SDV] Life Sciences [q-bio], Blot, 030104 developmental biology, biology.protein, Immunohistochemistry, Titin, Neurology. Diseases of the nervous system, Neurology (clinical), business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, 030217 neurology & neurosurgery, RC321-571
Abstract: International audience; Congenital titinopathies are myopathies with variable phenotypes and inheritance modes. Here, we fully characterized, using an integrated approach (deep phenotyping, muscle morphology, mRNA and protein evaluation in muscle biopsies), two siblings with congenital multicore myopathy harboring three TTN variants predicted to affect titin stability and titin-myosin interactions. Muscle biopsies showed multicores, type 1 fiber uniformity and sarcomeric structure disruption with some thick filament loss. Immunohistochemistry and Western blotting revealed a marked reduction of fast myosin heavy chain iso-forms. This is the first observation of a titinopathy suggesting that titin defect leads to secondary loss of fast myosin heavy chain isoforms.
Published: 2020

40. Rational and design of the ROTAS study: a randomized study for the optimal treatment of symptomatic patients with low-gradient severe aortic valve stenosis and preserved left ventricular ejection fraction

Author: Thierry Le Tourneau, Emmanuel Oger, Elena Galli, Catherine Sportouch, Augustin Coisne, Mathieu Lederlin, Anne Bernard, Erwan Donal, Florent Le Ven, Patrizio Lancellotti, Loïc Bière, Christophe Tribouilloy, Gilbert Habib, Service de cardiologie et maladies vasculaires [Rennes] = Cardiac, Thoracic, and Vascular Surgery [Rennes], CHU Pontchaillou [Rennes], Laboratoire Traitement du Signal et de l'Image (LTSI), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de Médecine Interne et Pneumologie [Brest] (DMIP - Brest), Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Clinique du Millénaire - Oc Santé [Montpellier], Oc Santé [Montpellier], Unité de recherche de l'institut du thorax (ITX-lab), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN), CHU Trousseau [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Biologie Neurovasculaire et Mitochondriale Intégrée (BNMI), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Hôpital de la Timone [CHU - APHM] (TIMONE), Microbes évolution phylogénie et infections (MEPHI), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Service de cardiologie [Liège], CHU de Liège-Domaine Universitaire du Sart Tilman, Service de Cardiologie [Amiens], CHU Amiens-Picardie, Mécanismes physiopathologiques et conséquences des calcifications vasculaires - UR UPJV 7517 (MP3CV), Université de Picardie Jules Verne (UPJV)-CHU Amiens-Picardie, Recherche en Pharmaco-épidémiologie et Recours aux Soins (REPERES), Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP), Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), PHRC-N 2017, National grant from « direction generale de la sante » -ministère de la santé, France, Service de cardiologie et maladies vasculaires, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-CHU Pontchaillou [Rennes], Institut de Génomique Fonctionnelle - Montpellier GenomiX (IGF MGX), Institut de Génomique Fonctionnelle (IGF), Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), unité de recherche de l'institut du thorax UMR1087 UMR6291 (ITX), Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Soins Intensifs et Urgences Cardiologiques, Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Nantes Angers Le Mans (UNAM), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université d'Angers (UA), and Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)
Subjects: medicine.medical_specialty, Population, 030204 cardiovascular system & hematology, Doppler echocardiography, Severity of Illness Index, Ventricular Function, Left, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Aortic valve replacement, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Cardiac magnetic resonance imaging, Internal medicine, medicine, Humans, Randomized study, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, Radiology, Nuclear Medicine and imaging, 030212 general & internal medicine, education, ComputingMilieux_MISCELLANEOUS, Heart Valve Prosthesis Implantation, [SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases, education.field_of_study, Ejection fraction, medicine.diagnostic_test, business.industry, Aortic stenosis, Low gradient, Stroke Volume, Aortic Valve Stenosis, General Medicine, Stroke volume, Prognosis, medicine.disease, [SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, 3. Good health, Stenosis, Treatment Outcome, Aortic Valve, Aortic valve stenosis, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Cardiology, Cardiology and Cardiovascular Medicine, business
Abstract: Aims Fifteen to thirty percentage of patients with severe aortic stenosis (AS) have preserved left ventricular ejection fraction (LVEF) and a discordant AS pattern at Doppler echocardiography, which is characterized by a small ( Methods and results The ROTAS trial will be a multicentre randomized non-blinded study involving 16 reference centres. AS severity will be confirmed by a multimodality approach (rest and stress echocardiography, calcium scoring, and cardiac magnetic resonance imaging for optimally characterize the population), which could provide important inputs to improve the pathophysiological understanding of this complex disease. Well-characterized patients will be randomized according to the management strategy. The primary endpoint will be the occurrence of all-cause mortality or cardiac related-hospitalizations during 2-year FU. One hundred and eighty subjects per group will be included. Conclusion The management of patients with LS severe AS and preserved LVEF is largely debated. ROTAS trial will allow a comprehensive evaluation of this particular pattern of AS and will establish which is the most appropriate management of these patients.
Published: 2020

41. Estimation of residual renal function using beta‐trace protein: Impact of dialysis procedures

Author: Marion Morena, Jean-Paul Cristol, Olivia Gilbert, Moglie Le Quintrec, Maria-Eugenia Noguera-Gonzalez, Anne-Sophie Bargnoux, Delphine Buthiau, Nils Kuster, Annie Rodriguez, Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Département d'hématologie biologique[Montpellier], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Saint Eloi (CHRU Montpellier), MORNET, Dominique, and Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-CHU Saint-Eloi
Subjects: Male, medicine.medical_treatment, Medicine (miscellaneous), 02 engineering and technology, 030204 cardiovascular system & hematology, Kidney, [SDV.MHEP.UN]Life Sciences [q-bio]/Human health and pathology/Urology and Nephrology, chemistry.chemical_compound, 0302 clinical medicine, Dialysis Solutions, Aged, 80 and over, biology, General Medicine, residual renal function, Middle Aged, Lipocalins, 3. Good health, Intramolecular Oxidoreductases, peritoneal dialysis, Female, Peritoneum, Glomerular Filtration Rate, Adult, medicine.medical_specialty, Urinary system, beta-2 microglobulin, 0206 medical engineering, Biomedical Engineering, Urology, Renal function, Bioengineering, Peritoneal dialysis, Biomaterials, 03 medical and health sciences, Renal Dialysis, medicine, Humans, Beta-Trace Protein, Cystatin C, Renal Insufficiency, Chronic, Dialysis, Aged, hemodiafiltration, Creatinine, Beta-2 microglobulin, business.industry, medicine.disease, [SDV.MHEP.UN] Life Sciences [q-bio]/Human health and pathology/Urology and Nephrology, 020601 biomedical engineering, Renal Elimination, Cross-Sectional Studies, chemistry, biology.protein, business, conventional hemodialysis, Biomarkers, Kidney disease
Abstract: International audience; AbstractBeta‐trace protein (BTP), a low molecular weight protein of 23‐29 kDa, has been proposed as a promising biomarker to estimate residual renal function (RRF) in patients on maintenance hemodialysis (HD). Indeed, BTP is cleared by native kidney but not during conventional HD session. By contrast, the removal rate of BTP using convective processes (mainly hemodiafiltration [HDF]) and peritoneal dialysis (PD) has been little or not investigated. Therefore, an aim of this study was to evaluate the impact of dialysis procedures (high‐flux HD, on‐line post‐dilution HDF and PD) on BTP removal in comparison with beta‐2 microglobulin (B2M) and cystatin C (CYSC) removals after a single session. In addition, the ability of BTP to predict RRF in PD was assessed. This observational cross‐sectional study included a total of 82 stable chronic kidney disease patients, 53 patients were on maintenance dialysis (with n = 26 in HD and n = 27 in HDF) and 29 were on PD. Serum concentrations of BTP, B2M, and CYSC were measured (a) before and after a single dialysis session in HD and HDF anuric patients to calculate reduction percentages, (b) in serum, 24‐hour‐dialysate and 24‐hour‐urine in PD patients to compute total, peritoneal, and urinary clearance. RRF was estimated using four equations developed for dialysis patients without urine collection and compared to the mean of the urea and creatinine clearances in PD. The concentrations of the three studied molecules were significantly reduced (P < .001) after dialysis session with significantly higher reduction ratio using HDF compared to HD modality (P < .001): BTP 49.3% vs 17.5%; B2M 82.3% vs 69.7%; CYSC 77.4% vs 66% in HDF and HD, respectively. In non‐anuric PD patients, B2M and CYSC were partly removed by peritoneal clearance (72.3% and 57.6% for B2M and CYSC, respectively). By contrast, BTP removal by the peritoneum was negligible and a low bias for the BTP‐based equation to estimate RRF (−1.4 mL/min/1.73 m2) was calculated. BTP is significantly removed by high‐flux HD or HDF, thereby compromising its use to estimate RRF. By contrast, BTP appears as a promising biomarker to estimate RRF in PD patients since it is not affected by peritoneal clearance, unlike B2M and CYSC, and it is well correlated to RRF.
Published: 2020

42. The PIWI protein Aubergine recruits eIF3 to activate translation in the germ plasm

Author: Aymeric Chartier, Rima Naït-Saïdi, Jeremy Dufourt, Martine Simonelig, Mathilde Decourcelle, Vipul Patel, Amandine Bastide, Anne Ramat, Julie Cremaschi, Celine Garret, Maria-Rosa Garcia-Silva, François Juge, Camille Jahan, Institut de génétique humaine (IGH), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Institut de Génétique Moléculaire de Montpellier (IGMM), BioCampus Montpellier (BCM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 1 (UM1)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Institut de Génomique Fonctionnelle (IGF), Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Simonelig, Martine, BioCampus (BCM), and Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Transposable element, endocrine system, Eukaryotic Initiation Factor-3, RNA Stability, [SDV]Life Sciences [q-bio], Piwi-interacting RNA, Biology, Poly(A)-Binding Proteins, Article, Cell Line, 03 medical and health sciences, 0302 clinical medicine, Peptide Initiation Factors, Polysome, Developmental biology, Animals, Drosophila Proteins, RNA, Messenger, RNA, Small Interfering, Molecular Biology, 030304 developmental biology, Germ plasm, 0303 health sciences, Messenger RNA, urogenital system, Binding protein, Embryo, Cell Biology, Cell biology, [SDV] Life Sciences [q-bio], Drosophila melanogaster, Germ Cells, Argonaute Proteins, Piwi RNAs, Translational Activation, 030217 neurology & neurosurgery
Abstract: Piwi-interacting RNAs (piRNAs) and PIWI proteins are essential in germ cells to repress transposons and regulate mRNAs. InDrosophila, piRNAs bound to the PIWI protein Aubergine (Aub) are transferred maternally to the embryo and regulate maternal mRNA stability through two opposite roles. They target mRNAs by incomplete base pairing, leading to their destabilization in the soma and stabilization in the germ plasm. Here, we report a function of Aub in translation. Aub is required for translational activation ofnanosmRNA, a key determinant of the germ plasm. Aub physically interacts with the poly(A)-binding protein (PABP) and the translation initiation factor eIF3. Polysome gradient profiling reveals the role of Aub at the initiation step of translation. In the germ plasm, PABP and eIF3d assemble in foci that surround Aub-containing germ granules, and Aub acts with eIF3d to promotenanostranslation. These results identify translational activation as a new mode of mRNA regulation by Aub, highlighting the versatility of PIWI proteins in mRNA regulation.
Published: 2020

43. On the Influence of Oxygen on the Degradation of Fe‐N‐C Catalysts

Author: Jingkun Li, Kavita Kumar, Michel Mermoux, Frédéric Jaouen, Jaysen Nelayah, Frédéric Maillard, Andrea Zitolo, Laetitia Dubau, Electrochimie Interfaciale et Procédés (EIP), Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces (LEPMI), Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Matériaux Interfaces ELectrochimie (MIEL), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Laboratoire Matériaux et Phénomènes Quantiques (MPQ (UMR_7162)), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Projet ANR CAT2CAT (ANR-16-CE05-0007)Projet ANR ANIMA (ANR-19-CE05-0039), ANR-16-CE05-0007,CAT2CAT,Des catalyseurs aux cathodes: Une approche d'architecture contrôlée d'électrode pour pile PEM à base de métaux abondants(2016), ANR-19-CE05-0039,ANIMA,Aérogels de carbone poreux dopés à l'azote et avec des métaux abondants pour des assemblages membrane-électrodes efficaces et durables(2019), Université Grenoble Alpes (UGA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Centre National de la Recherche Scientifique (CNRS), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and ANR-19-CE05-0039,ANIMA,ANR-19-CE05-0039 - ANIMA - Aérogels de carbone poreux dopés à l'azote et avec des métaux abondants pour des assemblages membrane-électrodes efficaces et durables
Subjects: Inorganic chemistry, Proton exchange membrane fuel cell, chemistry.chemical_element, Electrolyte, 02 engineering and technology, 010402 general chemistry, Oxygen, 7. Clean energy, 01 natural sciences, Catalysis, Corrosion, symbols.namesake, 010405 organic chemistry, General Medicine, [CHIM.CATA]Chemical Sciences/Catalysis, [CHIM.MATE]Chemical Sciences/Material chemistry, General Chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, chemistry, 13. Climate action, symbols, Reversible hydrogen electrode, Degradation (geology), Raman spectroscopy, 0210 nano-technology
Abstract: International audience; Precious metal-free catalysts for oxygen reduction reaction (ORR) in proton exchange membrane fuel cells are gaining momentum, with Fe-N-C catalysts comprising atomic FeN x sites the most promising candidate. Research and development is shifting from activity targets to improved stability of Fe-N-C catalysts in fuel cells. Their durability has hitherto been extensively studied using accelerated stress tests (AST) performed at room temperature and in inert-gas saturated acidic pH electrolyte. Here, we reveal stronger degradation of the Fe-N-C structure and four times higher ORR activity loss when performing load cycling AST in O2-vs. Ar-saturated pH 1 electrolyte. Raman spectroscopy results point towards strong carbon corrosion after AST in O2 , even when cycling at low potentials of 0.3-0.7 V vs. the reversible hydrogen electrode, while no corrosion occurred after any load cycling AST in Ar. The load cycling AST in O2 leads to the loss of a significant fraction of FeN x sites, as shown by energy dispersive X-ray spectroscopy analyses, and to the formation of Fe oxides. The results support that the unexpected carbon corrosion occurring at such low potential in the presence of O2 is due to reactive oxygen species produced between H 2 O 2 and Fe sites via Fenton reactions.
Published: 2020

44. Coupling osmotic dehydration with heat treatment for green papaya impregnated with blackberry juice solution

Author: Nadiarid Jiménez, Marvin Soto, Ana Mercedes Pérez, Joseph Bassama, Manuel Dornier, Fabrice Vaillant, Philippe Bohuon, Universidad Nacional de Costa Rica, UFR S2ATA, Université Gaston Berger de Saint-Louis Sénégal (UGB), Université de Montpellier (UM), Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Démarche intégrée pour l'obtention d'aliments de qualité (UMR Qualisud), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Université de La Réunion (UR)-Université de Montpellier (UM)-Avignon Université (AU)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université Montpellier 1 (UM1), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de La Réunion (UR)-Université de Montpellier (UM)-Avignon Université (AU)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université Montpellier 1 (UM1), Département Performances des systèmes de production et de transformation tropicaux (Cirad-PERSYST), and Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)
Subjects: 0106 biological sciences, Sucrose, Q05 - Additifs alimentaires, 01 natural sciences, 7. Clean energy, Industrial and Manufacturing Engineering, Anthocyanins, chemistry.chemical_compound, Traitement des aliments, Blackberry juice, Osmotic dehydration, Food science, ComputingMilieux_MISCELLANEOUS, Traitement thermique, 2. Zero hunger, Moisture, Chemistry, 04 agricultural and veterinary sciences, 040401 food science, 6. Clean water, Anthocyane, Agent de texture, Mûre de ronce, Teneur en glucides, Green papaya, Heat treatment, 0404 agricultural biotechnology, Q02 - Traitement et conservation des produits alimentaires, Response surface methodology, 010608 biotechnology, Mass transfer, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, Sugar, Additif alimentaire, Propriété physicochimique, Molality, Jus de fruits, Papaye, Anthocyanin, Séchage osmotique, [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition, Food Science
Abstract: Slices (1.5 mm thick) of green papaya were impregnated through osmotic dehydration with a blackberry juice–sucrose solution to produce an intermediate moisture product. The effect of processing temperature (T) and sucrose-added molality (msucrose) on mass transfer during the operation was assessed, using a response surface methodology (RSM). The RSM was used to model water loss, sugar and anthocyanin gain during the process. Increasing sucrose molality resulted in increasing water loss and sugar gain, but decreasing anthocyanin gain. Water transfer therefore limits anthocyanin impregnation, but not sucrose incorporation. Afterwards, the impact of heat treatment at high temperatures was analysed, using numerical simulation. The conditions of the combined process, designed to achieve an anthocyanin-rich final product, are low sucrose-added molalities (sucrose molality < 1 mol kg–1) and high processing temperatures (T > 50 ºC) for osmotic dehydration, coupled with high-temperature, short-time (HTST) heat treatments for product stabilisation. European Commission/[FP6-0015279]/EU/Bélgica Universidad de Costa Rica/[735-A2-502]/UCR/Costa Rica UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Agroalimentarias::Centro Nacional de Ciencia y Tecnología de Alimentos (CITA) UCR::Vicerrectoría de Docencia::Ciencias Agroalimentarias::Facultad de Ciencias Agroalimentarias::Escuela de Tecnología de Alimentos
Published: 2020

45. Inorganic Sol–Gel Polymerization for Hydrogel Bioprinting

Author: Montheil, Titouan, Maumus, Marie, Valot, Laurine, Lebrun, Aureĺien, Martinez, Jean, Amblard, Muriel, Noël, Danièle, Mehdi, Ahmad, Subra, Gilles, Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] (IBMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), and Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)
Subjects: Chemistry, [CHIM.POLY]Chemical Sciences/Polymers, technology, industry, and agriculture, [CHIM.MATE]Chemical Sciences/Material chemistry, QD1-999
Abstract: International audience; An inorganic sol−gel polymerization process was used as a cross-linking reaction during three-dimensional (3D) bioprinting of cell-containing hydrogel scaffolds. Hybrid hydroxypropyl methyl cellulose (HPMC), with a controlled ratio of silylation, was prepared and isolated as a 3D-network precursor. When dissolved in a biological buffer containing human mesenchymal stem cells, it yields a bioink that can be printed during polymerization by extrusion. It is worth noting that the sol−gel process proceeded at pH 7.4 using biocompatible mode of catalysis (NaF and glycine). The printing window was determined by rheology and viscosity measurements. The physicochemical properties of hydrogels were studied. Covalent functionalization of the network can be easily performed by adding a triethoxysilyl-containing molecule; a fluorescent hybrid molecule was used as a proof of concept.
Published: 2020

46. Synergic effect of doxorubicin release and two-photon irradiation of Mn2+-doped Prussian blue nanoparticles on cancer therapy

Author: Saad Sene, Lamiaa M. A. Ali, Fabrice Salles, Maëlle Cahu, Yannick Guari, Joël Chopineau, Jean-Marie Devoisselle, Jérôme Long, Magali Gary-Bobo, Joulia Larionova, Morgane Daurat, Emna Mathlouthi, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Nanomedsyn, Université de Nîmes (UNIMES), Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] (IBMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)
Subjects: inorganic chemicals, Tunisia, General Chemical Engineering, Nanoparticle, 02 engineering and technology, 010402 general chemistry, Photochemistry, 7. Clean energy, 01 natural sciences, UR/11/ES/19, chemistry.chemical_compound, Two-photon excitation microscopy, medicine, [CHIM]Chemical Sciences, Doxorubicin, Irradiation, ComputingMilieux_MISCELLANEOUS, Prussian blue, Physico-chimie des matériauxà l'état condensé, Doping, Tunis, General Chemistry, Photothermal therapy, 021001 nanoscience & nanotechnology, 3. Good health, 0104 chemical sciences, [SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biophysics, des Sciences, chemistry, Cancer cell, 0210 nano-technology, medicine.drug
Abstract: International audience; We demonstrate here that Mn 2+-doped Prussian blue nanoparticles of ca. 55 nm loaded with doxorubicin may be used as efficient therapeutic agents for combined photothermal and chemo-therapy of cancer cells with a synergic effect under two photon irradiation. Photothermal therapy (PTT) is a promising strategy for the therapeutic treatment of tumours, which consists in "burning" cancer cells by laser irradiation at low energy wavelengths in the presence of an NIR photo-adsorbing agent. 1,2 In comparison to conventional cancer treatments, it offers several advantages, such as high specicity, deep penetration, lower tumour recurrence, minimal invasiveness and low toxicity to normal tissues. 3,4 Due to the fact that the treatment efficiency highly depends on the outstanding capacity of the PTT agent to convert light into heat, numerous materials have recently been reported , such as organic dyes 5,6 or various inorganic nano-objects, including metallic nanostructures (Au nanorods or nanoshells, Ag, Pd), carbon based materials (nanotubes, spheres, graphene oxide), transition metal dichalcogenide nanoparticles, metal oxide nano-objects or up-conversion nanocrystals. 7-16 Among these, Prussian blue (PB) nano-objects have been developed as interesting PTT agents since they benet from many advantages, such as: (i) a controlled size ranging from a few to hundreds of nanometers, (ii) easy surface functionali-zation, (iii) excellent absorption properties in the NIR spectral domain due to an Fe 2+ to Fe 3+ intervalence charge transfer band ranging from 650 to 900 nm, (iv) high stability under irradiation , and (v) the fact that bulk PB is validated by the FDA under the brand name Radiogardase® as an antidote for human beings exposed to radioactive Cs +. 17 It has been shown in vitro that PB nanoparticles upon single photon excitation (SPE) (at 808 nm) can convert the laser irradiation into thermal energy contributing to an important temperature increase. 18,19 Their efficiency depends on the nanoparticles' concentration, their chemical composition, the laser power, the mode of irradiation and the irradiation time. Moreover, it has been demonstrated that nano-sized PB presents a higher efficiency in comparison with Au nanorods and a better photothermal stability than organic dyes used as conventional photothermal agents. 19,20 PTT effect of PB nanoparticles has also been demonstrated in vivo through their intra-tumoral injection that causes signicant tumour necrosis 24 h aer NIR irradiation in comparison with non-treated mice. 18 Nevertheless, the complete eradication of cancer cells using solely PTT treatment is rather difficult due to the suboptimal laser energy in deep tissues related to light scattering and absorption effects, a limited light penetration and the insufficient tumour target specicity of PTT agents. Some of these drawbacks may be circumvented using two photon excitation (TPE), which permits to increase the penetration depth and laser focalization allowing selective and efficient destruction of the targeted cancer cells with less damage to healthy tissues. 21-23 In this line of thought, we reported recently Mn 2+-doped PB nanoparticles of ca. 70 nm as efficient multifunctional PTT agents permitting to eradicate 97% of cancer cells 24 h aer irradiation under TPE during 10 min, which may also be followed by Magnetic Resonance Imaging (MRI). 24 However, the comparison between the efficiency of the single and two-photon excitations on the same nano-objects has never been investigated.
Published: 2020

47. Establishing reactivity descriptors for platinum group metal (PGM)-free Fe–N–C catalysts for PEM fuel cells

Author: Moulay Tahar Sougrati, Giorgia Daniel, Tomasz Kosmala, Christian Durante, Asad Mehmood, Aaron Roy, Peter Strasser, Mathias J.M. Primbs, Yanyan Sun, Daniel Malko, Frédéric Jaouen, Jonathan Sharman, Gaetano Granozzi, Pierre-Yves Blanchard, Plamen Atanassov, Anthony Kucernak, Deborah J. Jones, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Center For Emerging Energy Technologies [Albuquerque] (CEET), The University of New Mexico [Albuquerque], Department of Chemistry [Imperial College London], Imperial College London, Technische Universität Berlin (TU), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2), Department of Chemical Sciences, Universita degli Studi di Padova, Johnson Matthey Technology Centre, and Commission of the European Communities
Subjects: Inorganic chemistry, Proton exchange membrane fuel cell, Context (language use), 02 engineering and technology, 010402 general chemistry, Electrochemistry, 01 natural sciences, Catalysis, [CHIM]Chemical Sciences, Environmental Chemistry, Reactivity (chemistry), ComputingMilieux_MISCELLANEOUS, Energy, Renewable Energy, Sustainability and the Environment, Chemistry, [CHIM.CATA]Chemical Sciences/Catalysis, Microporous material, 021001 nanoscience & nanotechnology, Pollution, 0104 chemical sciences, Nuclear Energy and Engineering, 13. Climate action, Chemisorption, ddc:540, 0210 nano-technology, Mesoporous material
Abstract: International audience; We report a comprehensive analysis of the catalytic oxygen reduction reaction (ORR) reactivity of four of today's most active benchmark platinum group metal-free (PGM-free) iron/nitrogen doped carbon electrocatalysts (Fe-N-Cs). Our analysis reaches far beyond previous such attempts in linking kinetic performance metrics, such as electrocatalytic mass-based and surface area-based catalytic activity with previously elusive kinetic metrics such as the active metal site density (SD) and the catalytic turnover frequency (TOF). Kinetic ORR activities, SD and TOF values were evaluated using in situ electrochemical NO 2 À reduction as well as an ex situ gaseous CO cryo chemisorption. Experimental ex situ and in situ Fe surface site densities displayed remarkable quantitative congruence. Plots of SD versus TOF (''reactivity maps'') are utilized as new analytical tools to deconvolute ORR reactivities and thus enabling rational catalyst developments. A microporous catalyst showed large SD values paired with low TOF, while mesoporous catalysts displayed the opposite. Trends in Fe surface site density were linked to molecular nitrogen and Fe moieties (D1 and D2 from 57 Fe Mössbauer spectroscopy), from which pore locations of catalytically active D1 and D2 sites were established. This cross-laboratory analysis, its employed experimental practices and analytical methodologies are expected to serve as a widely accepted reference for future, knowledge-based research into improved PGM-free fuel cell cathode catalysts. Broader context Polymer electrolyte membrane fuel cells (PEMFC) have reached the commercial stage and ever wider deployment is imminent. To further reduce the loading of platinum group metal (PGM) catalysts in PEMFC electrodes, PGM-free, iron and nitrogen-doped carbon oxygen reduction (ORR) electrocatalysts (Fe-N-C) were developed over past decades. Recent advances in activity and stability of Fe-N-C are impressive, yet methods to evaluate the number of catalytic active Fe sites at the surface and intrinsic turn over frequency remained elusive. This changed with the advent of CO cryo-sorption and in situ nitrite stripping techniques that yielded these intrinsic reactivity descriptors. Never before, however, have these two complementary specific adsorption/stripping techniques been compared and combined with other chemical and spectroscopic analytics for an in-depth analysis of catalytic reactivity of Fe-N-C ORR electrocatalysts. The present study addresses this issue and presents a comprehensive analysis of the reactivity of the four state-of-the-art Fe-N-C PEMFC electrocatalysts. The study provides a deeper understanding of the origin and difference in catalytic performance through the combination of a host of different surface sensitive and bulk analysis methods. The methodologies and analyses of this benchmark catalyst study will benefit future developments in Fe-N-C catalysis.
Published: 2020

48. Saloplastics as multiresponsive ion exchange reservoirs and catalyst supports

Author: Flavien Sciortino, Dayangku Noorfazidah Awang Shri, Agnieszka Witecka, Sajjad Husain Mir, Amir Pakdel, Hideki Abe, Anjaneyulu Oruganti, Gaulthier Rydzek, Katsuhiko Ariga, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), National Institute for Materials Science (NIMS), JP18F18797, Japan Society for the Promotion of Science, Institut des Sciences Chimiques de Rennes (ISCR), Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)
Subjects: chemistry.chemical_classification, Ion exchange, Renewable Energy, Sustainability and the Environment, Kinetics, Ionic bonding, Nanoparticle, 02 engineering and technology, General Chemistry, Polymer, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Polyelectrolyte, 0104 chemical sciences, Catalysis, chemistry.chemical_compound, Chemical engineering, chemistry, Methacrylic acid, [CHIM]Chemical Sciences, General Materials Science, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS
Abstract: Developing saloplastics composed of Compacted Polyelectrolyte Complexes (COPECs) represents a promising strategy for assembling multifunctional and processable polymer matrices in a simple manner. Here, a comprehensive investigation of the potential application of saloplastics as ion reactors for designing catalysts has been performed. First the propensity of saloplastics to exchange and concentrate ions has been elucidated through investigating the influence of Na+ to Cu2+ cation exchange within COPECs assembled from poly(methacrylic acid) (PMAA) and poly(allylamine hydrochloride) (PAH). The multi-scale responses of PMAA/PAH COPECs upon incubation with CuCl2 solutions at pH 3 and 4.5 were investigated chemically by ATR-FTIR, ICP, XPS, DSC and TGA, morphologically by SEM, and mechanically by strain-to-break measurements. Both the amplitude and the kinetics of the COPEC response were driven by the deprotonation rate of PMAA chains, enabling the formation of bridge complexes with Cu2+ and impacting the saloplastic's composition (water content and polyelectrolytes), structure (emergence of macropores) and mechanical properties. Kinetic-based tuning of the molality of copper ions trapped in PMAA/PAH COPECs was demonstrated, enabling the usage of saloplastics as reactors. This ability allowed controlling the growth of Cu(0) nanoparticles in saloplastics by thermal annealing, ultimately adjusting their catalytic activity toward carbon monoxide (CO) oxidation. This work highlights how the ionic reservoir properties of saloplastics must be accounted for when designing the applications of COPEC-based materials.
Published: 2020

49. Immunopathological manifestations in Kabuki syndrome: a registry study of 177 individuals

Author: Margot, Henri, Boursier, Guilaine, Duflos, Claire, Sanchez, Elodie, Amiel, Jeanne, Andrau, Jean-Christophe, Arpin, Stéphanie, Brischoux-Boucher, Elise, Boute, Odile, Burglen, Lydie, Caille, Charlotte, Capri, Yline, Collignon, Patrick, Conrad, Solène, CORMIER-DAIRE, Valerie, Delplancq, Geoffroy, Dieterich, Klaus, Dollfus, Hélène, Fradin, Mélanie, Faivre, Laurence, Fernandes, Helder, Francannet, Christine, Gatinois, Vincent, Gérard, Marion, Goldenberg, Alice, Ghoumid, Jamal, Grotto, Sarah, Guerrot, Anne-Marie, Guichet, Agnès, Isidor, Bertrand, Jacquemont, Marie-Line, Julia, Sophie, Philip, K, Legendre, Marine, Le Quan Sang, K., Leheup, Bruno, Lyonnet, Stanislas, Magry, Virginie, Manouvrier, Sylvie, Martin, Dominique, Morel, Godelieve, Munnich, Arnold, Naudion, Sophie, Odent, Sylvie, Perrin, Laurence, Petit, Florence, Philip, Nicole, Rio, Marlène, Robbe, Julie, Rossi, Massimiliano, Sarrazin, Elisabeth, Toutain, Annick, Van Gils, Julien, Vera, Gabriella, Verloes, Alain, Weber, Sacha, Whalen, Sandra, Sanlaville, Damien, Lacombe, Didier, Aladjidi, Nathalie, Geneviève, David, Khau Van Kien, Philippe, Van Gils, Julie, Service de génétique médicale, Université de Bordeaux (UB)-CHU Bordeaux [Bordeaux]-Groupe hospitalier Pellegrin, Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Université Paris Descartes - Paris 5 (UPD5), Centre d'Immunologie de Marseille - Luminy (CIML), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service de génétique [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau, Service de Génétique clinique, Hôpital Jeanne de Flandre [Lille]-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Hôpital Robert Debré Paris, Hôpital Robert Debré, Service de Génétique Médicale, Hôpital intercommunal de Font-Pré, Centre hospitalier universitaire de Nantes (CHU Nantes), Génétique et épigénétique des maladies métaboliques, neurosensorielles et du développement (Inserm U781), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Muscle et Pathologies, [GIN] Grenoble Institut des Neurosciences (GIN), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Grenoble Alpes (UGA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Grenoble Alpes (UGA), Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO) et Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, CLAD Ouest, Centre Hospitalier Universitaire [Rennes], Centre Régional de Lutte contre le cancer Georges-François Leclerc [Dijon] (UNICANCER/CRLCC-CGFL), UNICANCER, Service de Génétique Médicale [CHU Clermont-Ferrand], CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Service de génétique [Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Service de génétique clinique, Institut Jacques Monod (IJM (UMR_7592)), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Service de génétique médicale - Unité de génétique clinique [Nantes], Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes), Centre Hospitalier Universitaire de La Réunion (CHU La Réunion), Service de génétique médicale [Toulouse], CHU Toulouse [Toulouse]-Hôpital Purpan [Toulouse], CHU Toulouse [Toulouse], CHU Bordeaux [Bordeaux], Service de Médecine Infantile III et Génétique Clinique [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire des Maladies Rénales Héréditaires, Imagine - Institut des maladies génétiques (IMAGINE - U1163), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital Jeanne de Flandres, Université de Lille, Droit et Santé-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Laboratoire de génétique médicale et cytogénétique [Le Mans], Centre Hospitalier Le Mans (CH Le Mans), Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), AP-HP Hôpital universitaire Robert-Debré [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Lille Neurosciences & Cognition - U 1172 (LilNCog (ex-JPARC)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Service de Génétique, Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE), Hydrosciences Montpellier (HSM), Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Recherche pour le Développement (IRD)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche en neurosciences de Lyon (CRNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre de référence car i b é en des maladies rares neuromusculaires et neurologiques adultes et enfant (CERCA), Hôpital Pierre Zobda Quitman-CHU Fort-de-France, U 1211 Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (MRGM), Immunité et cancer (U932), Université Paris Descartes - Paris 5 (UPD5)-Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), Physiopathologie et neuroprotection des atteintes du cerveau en développement, Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire régional de télédétection, Institut de Recherche pour le Développement (IRD), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Service d'Hémato-oncologie Pédiatrique, CHU Bordeaux [Bordeaux]-Hôpital Pellegrin, Département de génétique médicale, maladies rares et médecine personnalisée [CHRU Montpellier], Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques (LGMR), Université Montpellier 1 (UM1)-IFR3, Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), AOM 07-090, Ministère de la Santé et des Services sociaux, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Service Génétique Médicale [CHU Toulouse], Institut Fédératif de Biologie (IFB), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Pôle Biologie [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Lille Neurosciences & Cognition - U 1172 (LilNCog), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche en neurosciences de Lyon - Lyon Neuroscience Research Center (CRNL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), gerard, marion, Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), and Hôpital Bretonneau-Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)
Subjects: Male, [SDV.GEN] Life Sciences [q-bio]/Genetics, Vitiligo, Severity of Illness Index, Hypogammaglobulinemia, 0302 clinical medicine, Prevalence, Medicine, KDM6A, Registries, Child, [SDV.BDD]Life Sciences [q-bio]/Development Biology, ComputingMilieux_MISCELLANEOUS, Genetics (clinical), Immunodeficiency, Histone Demethylases, 0303 health sciences, Genetic disorder, KMT2D, Middle Aged, Thrombocytopenic purpura, Neoplasm Proteins, 3. Good health, DNA-Binding Proteins, Vestibular Diseases, Child, Preschool, Female, Autoimmune hemolytic anemia, Adult, medicine.medical_specialty, Adolescent, Primary Immunodeficiency Diseases, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, Autoimmune Diseases, Young Adult, 03 medical and health sciences, [SDV.BDD] Life Sciences [q-bio]/Development Biology, Humans, Abnormalities, Multiple, Genetic Association Studies, Aged, 030304 developmental biology, Autoimmune disease, [SDV.GEN]Life Sciences [q-bio]/Genetics, Kabuki syndrome, business.industry, Infant, Newborn, Infant, medicine.disease, Hematologic Diseases, immunity, Dermatology, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Face, Mutation, business, 030217 neurology & neurosurgery
Abstract: Kabuki syndrome (KS) (OMIM 147920 and 300867) is a rare genetic disorder characterized by specific facial features, intellectual disability, and various malformations. Immunopathological manifestations seem prevalent and increase the morbimortality. To assess the frequency and severity of the manifestations, we measured the prevalence of immunopathological manifestations as well as genotype–phenotype correlations in KS individuals from a registry. Data were for 177 KS individuals with KDM6A or KMT2D pathogenic variants. Questionnaires to clinicians were used to assess the presence of immunodeficiency and autoimmune diseases both on a clinical and biological basis. Overall, 44.1% (78/177) and 58.2% (46/79) of KS individuals exhibited infection susceptibility and hypogammaglobulinemia, respectively; 13.6% (24/177) had autoimmune disease (AID; 25.6% [11/43] in adults), 5.6% (10/177) with ≥2 AID manifestations. The most frequent AID manifestations were immune thrombocytopenic purpura (7.3% [13/177]) and autoimmune hemolytic anemia (4.0% [7/177]). Among nonhematological manifestations, vitiligo was frequent. Immune thrombocytopenic purpura was frequent with missense versus other types of variants (p = 0.027). The high prevalence of immunopathological manifestations in KS demonstrates the importance of systematic screening and efficient preventive management of these treatable and sometimes life-threatening conditions.
Published: 2020

50. Advances in the synthesis and structure of α-canaphite: a multitool and multiscale study

Author: Florence Porcher, Jérémy Soulié, Cédric Charvillat, Danielle Laurencin, Christèle Combes, Mark E. Smith, Christian Rey, Erik Elkaim, Christel Gervais, Nicholai Daugaard Jensen, Laëtitia Mayen, Pierre Gras, Christian Bonhomme, Maximilien Desbord, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), University of Southampton, Lancaster University, University of Warwick [Coventry], Laboratoire Léon Brillouin (LLB - UMR 12), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), ANR-16-CE19-0013,PyVerres,Développement de nouveaux verres à base de pyrophosphates élaborés par chimie douce pour des applications en régénération osseuse(2016), Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Collège de France (FRANCE), Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Synchrotron SOLEIL - SSOLEIL (FRANCE), Sorbonne Université (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), University of Warwick (UNITED KINGDOM), Lancaster University (UNITED KINGDOM), University of Southampton (UNITED KINGDOM), Université de Montpellier (FRANCE), Laboratoire Léon Brillouin - LLB (Gif-sur-Yvette, France), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Université Fédérale Toulouse Midi-Pyrénées, Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF)-Ecole Nationale Supérieure de Chimie de Paris- Chimie ParisTech-PSL (ENSCP)-Centre National de la Recherche Scientifique (CNRS), Signal, models, algorithms (SIGMA2), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Université de Rennes (UNIV-RENNES)-INRIA Rennes, Institut National de Recherche en Informatique et en Automatique (Inria), Cristallographie, Résonance Magnétique et Modélisations (CRM2), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mécanique et Technologie (LMT), and École normale supérieure - Cachan (ENS Cachan)-Centre National de la Recherche Scientifique (CNRS)
Subjects: α-canaphite, Materials science, Matériaux, Neutron diffraction, 02 engineering and technology, 010402 general chemistry, Calcium pyrophosphates, DFT, 01 natural sciences, Pyrophosphate, Synthesis, chemistry.chemical_compound, symbols.namesake, Canaphite, Synchrotron X-ray and neutron diffraction, [CHIM]Chemical Sciences, Molecule, General Materials Science, ComputingMilieux_MISCELLANEOUS, Tetrahydrate, Hydrogen bond, dehydration, Structure refinement, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, NMR, 0104 chemical sciences, Characterization (materials science), chemistry, Solid-state nuclear magnetic resonance, Tétrahydrate de pyrophosphate, symbols, Physical chemistry, 0210 nano-technology, Raman spectroscopy
Abstract: α-Canaphite (CaNa2P2O7·4H2O) is a layered calcium disodium pyrophosphate tetrahydrate phase of significant geological and potential biological interest. This study overcomes the lack of a reliable protocol to synthesize pure α-canaphite by using a novel simple and reproducible approach of double decomposition in solution at room temperature. The pure α-canaphite is then characterized from the atomic to the macroscopic level using a multitool and multiscale advanced characterization strategy, providing for the first time full resolution of the α-canaphite monoclinic structure, including the hydrogen bonding network. Synchrotron X-ray diffraction and neutron diffraction are combined with multinuclear solid state NMR experimental data and computational modeling via DFT/GIPAW calculations. Among the main characteristics of the α-canaphite structure are some strong hydrogen bonds and one of the four water molecules showing a different coordination scheme. This peculiar water molecule could be the last to leave the collapsed structure on heating, leading eventually to anhydrous α-CaNa2P2O7 and could also be involved in the internal hydrolysis of pyrophosphate ions as it is the closest water molecule to the pyrophosphate ions. Relating such detailed structural data on α-canaphite to its physico-chemical properties is of major interest considering the possible roles of canaphite for biomedical applications. The vibrational spectra of α-canaphite (deuterated or not) are analyzed and Raman spectroscopy appears to be a promising tool for the identification/diagnosis of such microcrystals in vitro, in vivo or ex vivo.
Published: 2020

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