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12 results on '"Sophie Boyer"'

1. Comprehensive characterization of the peroxisome proliferator activated receptor‐δ agonist GW501516 for horse doping control analysis

Author

Ludovic Bailly-Chouriberry, Stéphane Trevisiol, Marie-Agnès Popot, François Andre, Patrice Garcia, Yves Moulard, Laura Drif, Benoit Loup, Sophie Tendon, Benjamin Chabot, Sophie Boyer, Mylène Caroff, Vivian Delcourt, Murielle Jaubert, Wafek Taleb, and Hayate Haryouli

Subjects
Male, Agonist, medicine.drug_class, Administration, Oral, Pharmaceutical Science, Peroxisome proliferator-activated receptor, Context (language use), Urine, Pharmacology, 01 natural sciences, Analytical Chemistry, GW501516, 03 medical and health sciences, 0302 clinical medicine, In vivo, Oral administration, medicine, Animals, Environmental Chemistry, Horses, PPAR delta, 030216 legal & forensic medicine, Spectroscopy, Doping in Sports, chemistry.chemical_classification, 010401 analytical chemistry, medicine.disease, In vitro, 0104 chemical sciences, Substance Abuse Detection, Thiazoles, chemistry, Microsomes, Liver, Female
Abstract

According to international sport institutions, the use of peroxisome proliferator activated receptor (PPAR)-δ agonists is forbidden at any time in athlete career due to their capabilities to increase physical and endurance performances. The (PPAR)-δ agonist GW501516 is prohibited for sale but is easily available on internet and can be used by cheaters. In the context of doping control, urine is the preferred matrix because of the non-invasive nature of sampling and providing broader exposure detection times to forbidden molecules but often not detected under its native form due to the organism's metabolism. Even if urinary metabolism of G501516 has been extensively studied in human subjects, knowledge on GW501516 metabolism in horses remains limited. To fight against doping practices in horses' races, GW501516 metabolism has to be studied in horse urine to identify and characterize the most relevant target metabolites to ensure an efficient doping control. In this article, in vitro and in vivo experiments have been conducted using horse S9 liver microsome fractions and horse oral administration route, respectively. These investigations determined that the detection of GW501516 must be performed in urine on its metabolites because the parent molecule was extremely metabolized. To maximize analytical method sensitivity, the extraction conditions have been optimized. In accordance with these results, a qualitative analytical method was validated to detect the abuse of GW501516 based on its most relevant metabolites in urine. This work enabled the Laboratoire des Courses Hippiques (LCH) to highlight two cases of illicit administration of this forbidden molecule in post-race samples.

Published
2021
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2. Patterns and predictive factors of loss of the independence trajectory among community-dwelling older adults

Author

Achille Edem Tchalla, C. Laubarie-Mouret, Sophie Boyer, Nassima Toumi, Réjean Hébert, Charlotte Bimou, Michel Harel, Caroline Gayot, Marion Charenton-Blavignac, Justine Trimouillas, Thierry Dantoine, Noëlle Cardinaud, Handicap, Activité, Vieillissement, Autonomie, Environnement (HAVAE), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), and Université de Limoges (UNILIM)-Université de Limoges (UNILIM)

Subjects
Gerontology, Activities of daily living, media_common.quotation_subject, [SDV]Life Sciences [q-bio], Trajectory, lcsh:Geriatrics, Semi-parametric model, Cohort Studies, 03 medical and health sciences, 0302 clinical medicine, MESH: Aged, 80 and over, Functional decline, Activities of Daily Living, medicine, Humans, 030212 general & internal medicine, Prospective Studies, Socioeconomic status, MESH: Cohort Studies, media_common, Multinomial logistic regression, Aged, Aged, 80 and over, MESH: Aged, MESH: Humans, business.industry, Prevention, Cognitive disorder, MESH: Activities of Daily Living, Independence, medicine.disease, MESH: Prospective Studies, lcsh:RC952-954.6, MESH: Cognition Disorders, MESH: Independent Living, Older adults, Cohort, Observational study, Independent Living, Optimal number of groups, Geriatrics and Gerontology, business, Cognition Disorders, 030217 neurology & neurosurgery, Autonomy, Research Article
Abstract

Background Independence is related to the aging process. Loss of independence is defined as the inability to make decisions and participate in activities of daily living (ADLs). Independence is related to physical, psychological, biological, and socioeconomic factors. An enhanced understanding of older people’s independence trajectories and associated risk factors would enable the develop early intervention strategies. Methods Independence trajectory analysis was performed on patients identified in the Unité de Prévention de Suivi et d’Analyse du Vieillissement (UPSAV) database. UPSAV cohort is a prospective observational study. Participants were 221 community-dwelling persons aged ≥75 years followed for 24 months between July 2011–November 2013 and benefits from a prevention strategy. Data were collected prospectively using a questionnaire. Independence was assessed using the “Functional Autonomy Measurement System (Système de Mesure de l’Autonomie Fonctionnelle (SMAF))”. Group-based trajectory modeling (GBTM) was performed to identify independence trajectories, and the results were compared with those of k-means and hierarchical ascending classifications. A multinomial logistic regression was performed to identify predictive factors of the independence trajectory. Results Three distinct trajectories of independence were identified including a “Stable functional autonomy (SFA) trajectory” (53% of patients), a “Stable then decline functional autonomy decline (SDFA) trajectory” (33% of patients) and a “Constantly functional autonomy decline (CFAD) trajectory” (14% of patients). Not being a member of an association, and previous fall were significantly associated of a SDFA trajectory (P P Conclusions Community-living older persons exhibit distinct independence trajectories and the predictive factors. The evidence from this study suggests that the prevention and screening for the loss of independence of the older adults should be anticipated to maintaining autonomy.

Published
2021
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3. Staphylococcus capitis isolated from bloodstream infections: a nationwide 3-month survey in 38 neonatal intensive care units

Author

Sylvie Joron, Stéphane Marret, Fabrice Lapeyre, Jérôme Larche, Jacqueline Grando, David Leyssene, Jean Nakhleh, Clarisse Dupin, Tania Foucan, Stéphanie Bordes-Couecou, Géraldine Abadie, Franck Labbe, Marie Kempf, Manuel Petitfrere, Audrey Robine, Marie Decalonne, Chantal Chaplain, Philippe Jouvencel, Florent Goube, Benjamin Cotte, Laurent Villeneuve, Adeline Lacazette, Raoul Baron, Jean-Marc Jellimann, Anne-Sophie Trentesaux, Nathalie Chautemps, Laurent Mereghetti, Olivier Dauwalder, Nicolas Fortineau, Christine Roques Ceschin, Rafik Ben Ammar, Sandra Bourdon, Alain Gravet, Audrey Glanard, Olivier Belmonte, Jacques Gilquin, Arnaud Florentin, Souad Slimani, Annick Lefebvre, Jérôme Guinard, Edith Malpote, Céline Chatelet, Isabelle Bauvin, Alain Lozniewski, Anaëlle Muggeo, Geneviève Héry-Arnaud, Stéphane Le Vu, Isabelle Ligi, Anne Le Pourhiennec, Christian Cattoen, Olivier Join-Lambert, Bruno Pozetto, Carole De Chillaz, Amine Siali, Pascale Martres, Michel Drancourt, Claire Lesteven, Sandra C. dos Santos, Nadège Bourgeois-Nicolaos, Aude Davy, Claude Olive, Rémi Gimenes, Laure Gibert, Raymond Ruimy, Virginie Morange, Antoine Bouissou, Julien Mourdie, Emmanuelle Bille, Marie-Noëlle Noulard, Vincent Cattoir, Martine Delorme, Dominique Trivier, Luc Desfrere, Hugues Patural, Patrick Barthelemy, Nadia Idri, Florence Lemann, Franck-Olivier Mallaval, Sophie Ketterer-Martinon, Christian Vandenbussche, Pierre Frange, Sylvie Ledru, Mouna Khecharem, Pierre Lureau, Sophie Boyer, Philippe Berthelot, Salma Ben Hadj Yahia, Clément Legeay, Emilie Benabid, Guillaume Menard, Marion Levast-Raffin, Céline Coroller-Bec, Claire Huart, Maryvonne Demasure, Pascal Bolot, Yasmina Berrouane, Hélène Cormier, Pascale Minery, Pascale Penn, Peggy Larroude, Evelyne Werner, Géraldine Gascoin, Virginie Forget, Nathalie van der Mee-Marquet, Stéphanie Soive, Karine Gambarotto, Vanina Ambrogi, Aurore Claudinon, Serge Klosowski, Brigitte Riviere, Véronique Merle, Laura Menvielle, Véronique Faraut-Derouin, Saïd Aberrane, Alain Beuchee, Nolwenn Le Sache, Hôpital Bretonneau, CHU Trousseau [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Centre hospitalier Félix-Guyon [Saint-Denis, La Réunion], Centre Hospitalier René Dubos [Pontoise], Centre Hospitalier Intercommunal de Créteil (CHIC), Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Hôpital de la Conception [CHU - APHM] (LA CONCEPTION), Centre hospitalier de Pau, Centre Hospitalier Universitaire de La Réunion (CHU La Réunion), AP-HP - Hôpital Antoine Béclère [Clamart], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Hospitalier de Calais, Centre Hospitalier Universitaire de Nice (CHU Nice), Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E), CHU Pontchaillou [Rennes], Institut Necker Enfants-Malades (INEM - UM 111 (UMR 8253 / U1151)), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier de Saint-Denis [Ile-de-France], Centre Hospitalier de la Côte Basque (CHCB), Groupe Hospitalier du Havre, Hôpital Charles Nicolle [Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU), Centre hospitalier [Valenciennes, Nord], Centre Hospitalier Universitaire [Rennes], GHT de l'Artois, Centre Hospitalier Victor Dupouy, Centre Hospitalier Métropole Savoie [Chambéry], Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Centre Hospitalier Le Mans (CH Le Mans), Clinique du Val d'Ouest, CHU Necker - Enfants Malades [AP-HP], Hospices Civils de Lyon (HCL), Centre hospitalier Saint-Brieuc, Centre Hospitalier Georges Renon [Niort] (CH Georges Renon Niort), Centre Hospitalier Régional d'Orléans (CHRO), Hôpital Louis Mourier - AP-HP [Colombes], Microbes évolution phylogénie et infections (MEPHI), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), CHU de Saint-Brieuc, Interactions Gènes-Risques environnementaux et Effets sur la Santé (INGRES), Université de Lorraine (UL), Unité de Recherche Environnement Physique de la plante Horticole (EPHOR), Université d'Angers (UA)-AGROCAMPUS OUEST, AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre), CHU Pointe-à-Pitre/Abymes [Guadeloupe], Groupe de Recherche sur l'Adaptation Microbienne (GRAM 2.0), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Hôpital Hôtel-Dieu [Paris], Hôpital Delafontaine, Centre Hospitalier de Mulhouse, site du Hasenrain (Mulhouse), Laboratoire Universitaire de Biodiversité et Ecologie Microbienne (LUBEM), Université de Brest (UBO), Service de réanimation néonatale [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Pathogénie des infections systémiques (UMR_S 570), Centre Régional de PharmacoVigilance Nord-Pas-de-Calais [CHU Lille] (CRPV), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille)-Faculté de Médecine Henri Warembourg - Université de Lille, Centre de Recherche en Cancérologie Nantes-Angers (CRCNA), PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Nantes Angers Le Mans (UNAM)-Hôtel-Dieu de Nantes-Institut National de la Santé et de la Recherche Médicale (INSERM)-Hôpital Laennec-Centre National de la Recherche Scientifique (CNRS)-Faculté de Médecine d'Angers-Centre hospitalier universitaire de Nantes (CHU Nantes), CHU de la Martinique [Fort de France], Groupe Hospitalier du Havre Hôpital Jacques Monod (MONTIVILLIERS) (GHH), Polyclinique Médipôle Saint-Roch [Cabestany], Centre Hospitalier Universitaire de Reims (CHU Reims), CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), Université d'Auvergne - Clermont-Ferrand I (UdA), Aix-Marseille Université - École de médecine (AMU SMPM MED), Aix-Marseille Université - Faculté des sciences médicales et paramédicales (AMU SMPM), Aix Marseille Université (AMU)-Aix Marseille Université (AMU), Service de microbiologie [CHU Nancy], Service psychiatrique de l'enfant et de l'adolescent [CHU Hôpital Robert Debré], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré, Service de bactériologie-virologie [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau, Infectiologie et Santé Publique (UMR ISP), Université de Tours (UT)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Registre EPIMAD, Normandie Université (NU)-Normandie Université (NU)-CHU Amiens-Picardie-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Pathogénie des Staphylocoques – Staphylococcal Pathogenesis (StaPath), Centre International de Recherche en Infectiologie (CIRI), École normale supérieure de Lyon (ENS de Lyon)-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)-École normale supérieure de Lyon (ENS de Lyon)-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), Groupe Hospitalier Artois-Ternois Centre Hospitalier d’Arras, Système Nerveux Autonome - Epidémiologie, Physiologie, Ingénierie, Santé (SNA - EPIS), Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E)-Université Jean Monnet - Saint-Étienne (UJM), ELSAN Polyclinique Majorelle, Centre Hospitalier Intercommunal Castres-Mazamet (CHIC-CM), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Centre Hospitalier Universitaire de Martinique [Fort-de-France, Martinique], Centre Hospitalier de Lens, Institut de Veille Sanitaire (INVS), Hôpital Trousseau, Jonchère, Laurent, Centre Hospitalier Universitaire de Saint-Etienne (CHU de Saint-Etienne), Le CHCB, Centre Hospitalier de la Côte Basque, Centre International de Recherche en Infectiologie - UMR (CIRI), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Système Nerveux Autonome - Epidémiologie, Physiologie, Ingénierie, Santé (SNA-EPIS), Université Jean Monnet - Saint-Étienne (UJM)-Centre Hospitalier Universitaire de Saint-Etienne, CHU Saint-Etienne, 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 Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Caen Normandie (UNICAEN), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille)-Université Lille 2 - Faculté de Médecine, Université de Tours-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille)-CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-CHU Amiens-Picardie, Centre Hospitalier Régional Universitaire de Tours (CHRU TOURS), Institut National de la Santé et de la Recherche Médicale (INSERM)-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 la Santé et de la Recherche Médicale (INSERM)-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), Université Jean Monnet [Saint-Étienne] (UJM)-Centre Hospitalier Universitaire de Saint-Etienne, CHU Toulouse [Toulouse], Centre Hospitalier Universitaire Félix-Guyon [Saint-Denis, La Réunion, France], Centre Hospitalier Universitaire de Toulouse, Department of Microbiology Brest, Department of Microbiology, Brest, CHU CLAMART, Centre Hospitalier Universitaire de Nice (CHU de Nice), Centre Hospitalier Côte Basque, Bayonne, CHU Le Havre, Laboratory of microbiology and infection control, Assistance publique-Hôpitaux de Paris, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Hospitalier Universitaire Charles Nicolle, Partenaires INRAE, CHU de la Réunion, Saint-Denis, France., CHU Lens, CHU Argenteuil, Centre Hospitalier Métropole Savoie-Site de Chambéry, La Clinique du Val d'Ouest, Hôpitaux Est Hôpital Louis Pradel - Hospices Civils de Lyon, Centre Hospitalier Régional d'Orléans (CHR), Hopital Louis Mourier - AP-HP [Colombes], Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU), Service de virologie, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-CHU Pontchaillou [Rennes], Hôpital Antoine Béclère, Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Bactériologie-Virologie, Hôpital Bretonneau-Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Centre d'infectiologie Necker-Pasteur [CHU Necker], Service de chirurgie infantile, CHU Felix Guyon, Saint Denis de La Réunion, Hôtel-Dieu, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôtel-Dieu, Unité d'Hygiène Hospitalière, hospices civils de Lyon, Hôpital du Hasenrain, Mulhouse, CHU Valenciennes, Université Henri Poincaré - Nancy 1 (UHP), Hôpital de Bayonne [Bayonne], CHU Kremlin-Bicétre, Anofel Cryptosporidium National Network, Polyclinique de St Roch, CHU Pau, Unité de prévention et de lutte contre les infections nosocomiales [CHU Angers], PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Nantes Angers Le Mans (UNAM), Division of Neonatology, La Conception Hospital, Assistance Publique-Hôpitaux de Marseille and Faculté de Médecine, Université de la Méditerranée - Aix-Marseille 2, Laboratoire de Microbiologie clinique et environnementale [Pointe-à-Pitre, Guadeloupe, France], Centre Hospitalier Universitaire de Rennes (CHU Rennes), Hôpital privé de l'Estuaire [Le Havre], Pathogénie des Staphylocoques – Staphylococcal Pathogenesis, Hôpital d'Arras, CHU Le MAns, Polyclinique Majorelle, Laboratoire de Microbiologie, Centre Hospitalier Intercommunal Castres-Mazamet, Laboratoire de bactériologie, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-AP-HP - Hôpital Bichat - Claude Bernard [Paris]-Université Paris Diderot - Paris 7 (UPD7), Laboratoire de Recherche Opérationnelle et Mathématiques de la Décision - LAROMAD (Alger, Algérie), Centre Hospitalier d’Arras, Unité de Méthodologie en Recherche Clinique, Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Hospices Civils de Lyon (HCL)

Subjects
Male, 0301 basic medicine, Pediatrics, Clone (cell biology), NRCS-A clone, 030501 epidemiology, Staphylococcus capitis, Medical microbiology, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Drug Resistance, Multiple, Bacterial, Medicine, [SDV.MP.VIR] Life Sciences [q-bio]/Microbiology and Parasitology/Virology, [SDV.MHEP.ME] Life Sciences [q-bio]/Human health and pathology/Emerging diseases, [SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases, biology, Brief Report, Gestational age, General Medicine, Staphylococcal Infections, Anti-Bacterial Agents, 3. Good health, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Nationwide active surveillance, Infectious Diseases, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, [SDV.MHEP.MI] Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Vancomycin, Female, France, 0305 other medical science, Infant, Premature, [SDV.MP.PAR] Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, medicine.drug, Microbiology (medical), medicine.medical_specialty, Bloodstream catheter-related infection, Birth weight, Preterm babies, 030106 microbiology, Late onset, 03 medical and health sciences, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Intensive Care Units, Neonatal, Sepsis, Intensive care, Humans, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, business.industry, Neonatal Intensive Care Unit (NICU), Infant, Newborn, Neonates, biology.organism_classification, [SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, Catheter-Related Infections, [SDV.MP.BAC] Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, business
Abstract

To increase the knowledge about S. capitis in the neonatal setting, we conducted a nationwide 3-month survey in 38 neonatal intensive care units (NICUs) covering 56.6% of French NICU beds. We demonstrated 14.2% of S. capitis BSI (S.capBSI) among nosocomial BSIs. S.capBSI incidence rate was 0.59 per 1000 patient-days. A total of 55.0% of the S.capBSIs were late onset catheter-related BSIs. The S. capitis strains infected preterm babies (median gestational age 26 weeks, median birth weight 855 g). They were resistant to methicillin and aminoglycosides and belonged to the NRCS-A clone. Evolution was favorable in all but one case, following vancomycin treatment.

Published
2020
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4. Incidence of paediatric pneumococcal meningitis and emergence of new serotypes: a time-series analysis of a 16-year French national survey

Author

Severine Haouisee, Sandrine Anne Martha, Elodie Blondel, Maxime Thouvenin, Fouad Madhi, Guilaine Barnaud, Sylvie Charachon, Jérémie Violette, Chrystèle Fabbro, Hubert Ythier, Marie Pierre Fos, Emmanuelle Varon, Danielle Roybet, Grégory Dubourg, Olivier Guilluy, Jean Marc Schneider, Stéphane Bonacorsi, Abdelmalek Belgaid, Anne Laure Roux, Alain Goudeau, Stéphane Dauger, Valérie Biran, Olivier Moquet, Anne Gougeon Jollivet, Alain Martinot, Bertrand Chevallier, Chantal Chaplain, Claude Bosi, Josette Jehan, Caroline Garandeau, Karen Milcent, Claire Plassart, Nicolas Kalach, Valérie Sivadon-Tardy, Pascal Bolot, Françoise Evreux, Ellia Mezgueldi, Mireille Cheron, Marie Françoise Prere, Nawal Nicola, Jacques Brouard, Ralph Epaud, Agnès Ferroni, Eric Moulene, Emmanuelle Dessioux, Sylvia Akitani, Aurélia Pitsch, Cyril Morisot, Danielle Landragin, Eterne Twizeyimana, François Angoulvant, Jean Sarlangue, Isabelle Glatz, Caroline Guyot, Anne Bertrou, Anne Chace, Stéphanie Honore Bouakline, Delphine Desbois, Philippe Labrune, Didier Moissenet, Sophie Boyer, Alain Barrans, Leila Lafendi, Françoise Cascarigny, Nathalie Bednarek, Albert Faye, Ahmed Sadik, Valérie Marcou, Daniele De Luca, Etienne Javouhey, Véronqiue Vernet-Garnier, Florence Doucet-Populaire, Josette Raymond, Leatitia Pantalone, Célestin M’Bamba, Jean Marc Chamouilli, Katherine Dieckmann, Mariane Marin, Philippe Lehours, Mathie Lorrot, Didier Pinquier, Hélène Garrec, Christian Herve, Martin Chalumeau, Naim Ouldali, François Gouraud, Marc Le Bideau, Laurence Eitenschenck, Emmanuel Grimprel, Hélène Biessy, Valérie Macchi, Véronique Duval, Ilhem Agha-Mir, Hakim Lahrach, H. Haas, Pierre Lureau, Farida Hamdad, Marie Hélène Pierre, Florent Girard, Valérie Asensio, Romain Basmaci, Marlène Amara, Maité Micaelo, Patricia Roussellier, Brigitte Zimmermann, Nathalie Hubert, Julie Toubiana, Mohamed Amine Yangui, Sylvie Ledru, Fréderic Tronc, Corinne Levy, Jean Gaschignard, Alain Goux, Catherine Glastre, Pierre Patoz, Francis Chomienne, Bernadette Cartier-Riviere, Stéphanie Eyssette-Gayraud, Robert M. Cohen, Rodrigue Dessein, Nicolas Soustelle, Anna Grando, Didier Jan, François Dubos, Huong Porcheret, Isabelle Savoy, Fanny Autret, Marie Noelle Adam, Marie Josée Dufour, Anne Charbonneau, Olivier Lemenand, Anne Dao-Dubremetz, Agnes Rey, Anne Cécile Hochart, Guillaume Arlet, Véronique Despert, Didier Eyer, Fabrice Lapeyre, Nevena Danekova, Olivier Sebag, Ali Khalfi, Emmanuel Jeannot, Joël Gaudelus, Marie Aliette Dommergues, Frédéric Wallet, Elodie Dorangeon, Christine Vervel, Marie Emmanuelle Juvin, Gery Courouble, Gael Guyon, Florence Richardin, Marion Decobert, Laurent Geniez, Nejib Lejri, Stéphane Béchet, Katia Barsotti, Christian Cattoen, Julien Baleine, Pierre Goumy, Laure Warin, Serge Gallet, Anthony Texier, Delphine Minette Brunel, Rachel Heyman Guenais, Grégoire Benoist, Béatrice Pellegrino, Muriel Halna, Vincent Laugel, André De Briel, Norbert Laisney, A. Vachée, Christophe De Champs, Patrick Daoud, Isabelle Haegy-Doehring, Jean-Philippe Lavigne, Simone Saumureau, Delphine Penel-Capelle, Véronique Blanc, Abdelaziz Oulepsir, Elise Launay, Association Clinique et Thérapeutique Infantile du Val-de-Marne, Groupe de Pathologie Infectieuse Pédiatrique [Paris] (GPIP), Société Française de Pédiatrie (SFP), Urgences pédiatriques, Hôpital Necker Enfants Malades, Université Paris Descartes, Paris, France, parent, Unité Mixte de Recherche Epidémiologique et de Surveillance Transport Travail Environnement (UMRESTTE UMR T9405), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)

Subjects
Male, Serotype, Pediatrics, medicine.medical_specialty, Future studies, Adolescent, Population, Serogroup, 03 medical and health sciences, 0302 clinical medicine, 030225 pediatrics, medicine, Humans, 030212 general & internal medicine, Child, education, book, Prospective survey, National health, education.field_of_study, Meningitis, Pneumococcal, business.industry, Incidence, Incidence (epidemiology), Streptococcal Vaccines, Infant, Newborn, Infant, PNEUMOCOCCAL MENINGITIS, medicine.disease, Health Surveys, 3. Good health, Streptococcus pneumoniae, Infectious Diseases, Child, Preschool, Pediatric Infectious Disease, book.journal, Female, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, France, business, Meningitis, Forecasting
Abstract

Successive implementation of seven-valent then 13-valent pneumococcal conjugate vaccines (PCVs) led to a marked decrease in pneumococcal disease burden, including pneumococcal meningitis. We assessed the long-term effect of implementation of PCVs on incidence of pneumococcal meningitis in children in France over a 16-year period.We did a quasi-experimental, population-based interrupted time-series analysis with a nationwide prospective survey over 16 years in France, recruiting children aged younger than 15 years from 227 paediatric wards from January, 2001, to December, 2016. The main outcome by the time-series model was the estimated incidence of pneumococcal meningitis per 100 000 children (of a population of 12·6 million children in 2017) before and after PCV7 and PCV13 implementation. The time-series model was based on segmented regression with autoregressive error.We enrolled 1778 children with pneumococcal meningitis. PCV13 implementation led to a significant reduction in monthly incidence of pneumococcal meningitis from 0·12 per 100 000 children before PCV13 to a nadir of 0·07 in December, 2014 (-38%, 95% CI -56·1 to -20·4; p0·0001). A sharp increase occurred during 2015 and 2016, (+2·3% per month, incidence of 0·13 per 100 000 children at the end of the study period, p=0·0002), mainly related to an increase of serotype 24F, which was frequently penicillin resistant.The early effect of PCV13 implementation greatly reduced the incidence of pneumococcal meningitis in children less than 15 years old. However, a sharp rebound in incidence linked to the emergence of serotype 24F compromised the long-term PCV efficacy. If confirmed in future studies and in other countries, pneumococcal meningitis incidence rebound and 24F emergence should be considered when developing next-generation PCVs.The French Pediatric Infectious Diseases Group, Association Clinique et Thérapeutique Infantile du Val de Marne, Pfizer, and for the National Reference Centre for Pneumococci, the French National Health Agency.

Published
2018
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5. Prevalence of mild hyponatremia and its association with falls in older adults admitted to an emergency geriatric medicine unit (the MUPA unit)

Author

Muriel Castelli, Sophie Boyer, Patrick Kajeu, Thomas Mergans, Caroline Gayot, Charlotte Bimou, Thierry Dantoine, Achille Edem Tchalla, Handicap, Activité, Vieillissement, Autonomie, Environnement (HAVAE), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), and Université de Limoges (UNILIM)-Université de Limoges (UNILIM)

Subjects
Male, Pediatrics, [SDV]Life Sciences [q-bio], 030232 urology & nephrology, Poison control, Falls in older adults, MESH: Hospitalization, lcsh:Geriatrics, Fractures, Bone, Patient Admission, 0302 clinical medicine, MESH: Aged, 80 and over, Risk Factors, MESH: Risk Factors, Activities of Daily Living, Prevalence, 030212 general & internal medicine, Older adult, MESH: Geriatric Assessment, Aged, 80 and over, Geriatrics, MESH: Aged, Mild hyponatremia, MESH: Accidental Falls, 3. Good health, Hospitalization, MESH: Emergency Service, Hospital, Female, Falls, France, Emergency Service, Hospital, Hyponatremia, Research Article, Fall prevention, medicine.medical_specialty, 03 medical and health sciences, MESH: Cross-Sectional Studies, medicine, Humans, Risk factor, Geriatric Assessment, MESH: Prevalence, Aged, MESH: Humans, business.industry, Emergency department, MESH: Patient Admission, Prevention, MESH: Activities of Daily Living, nutritional and metabolic diseases, MESH: Fractures, Bone, Odds ratio, medicine.disease, MESH: Male, MESH: France, lcsh:RC952-954.6, Cross-Sectional Studies, MESH: Hyponatremia, Accidental Falls, Geriatrics and Gerontology, business, MESH: Female
Abstract

Background Hyponatremia is the most common electrolyte disorder in older adults and it can increase morbidity and mortality. Approximately one in three older adults fall each year; mild chronic hyponatremia can predispose this group to injurious falls and fractures and serum levels of sodium can also influence bone health. Little is known regarding the association between mild chronic hyponatremia and injurious fall prevalence in elderly patients admitted to the Emergency Department (ED). Therefore, the present study investigated the link between mild hyponatremia and the risk of injurious falls in elderly patients admitted to the Emergency Geriatric Medicine Unit (The MUPA Unit). Methods This cross-sectional study was conducted over 4 months and included patients ≥75 years of age who were admitted to the MUPA Unit of University Hospital Center of Limoges (France). Sociodemographic factors, fall events, comorbidities, medications, and sodium levels were assessed (hyponatremia was considered as sodium level < 136 mEq/L). Additionally, the short Comprehensive Geriatric Assessment (short-CGA), the Frailty score on the Short Emergency Geriatric Assessment (SEGA), and the Katz Activity of Daily Living (ADL) scale were administered. Results Of the 696 cases included in the final analysis, the mean age was 86.1 ± 5.6 years and 63.1% were female. The prevalence of falls was 27.9% (95% confidence interval [CI]: 24.6–31.2%) and that of mild hyponatremia was 15.9% (95% CI: 13.2–18.6%). The prevalence rate of mild hyponatremia was 13.2% (95% CI: 10.1–16.3%) in patients without falls and 26.1% (95% CI: 19.8–32.4%) in patients admitted for falls. Mild hyponatremia was significantly associated with falls (P < 0.001) and the adjusted odds ratio (OR) was 3.02 (95% CI: 1.84–4.96). Conclusions Because mild hyponatremia might be a risk factor for injurious falls and ED admission, determination of sodium levels during basic biomarker assessment on ED admission could be an important component of fall prevention strategies for the elderly.

Published
2019
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6. DNA replication and cancer: From dysfunctional replication origin activities to therapeutic opportunities

Author

David Walter, Anne-Sophie Boyer, and Claus Storgaard Sørensen

Subjects
DNA Replication, 0301 basic medicine, Genome instability, DNA re-replication, Cancer Research, Replication Origin, Biology, Genomic Instability, DNA replication factor CDT1, 03 medical and health sciences, chemistry.chemical_compound, Neoplasms, Humans, Precision Medicine, Genetics, DNA replication, Oncogenes, Cell cycle, D-loop replication, Cell biology, 030104 developmental biology, Licensing factor, chemistry, biology.protein, DNA, DNA Damage
Abstract

A dividing cell has to duplicate its DNA precisely once during the cell cycle to preserve genome integrity avoiding the accumulation of genetic aberrations that promote diseases such as cancer. A large number of endogenous impacts can challenge DNA replication and cells harbor a battery of pathways to promote genome integrity during DNA replication. This includes suppressing new replication origin firing, stabilization of replicating forks, and the safe restart of forks to prevent any loss of genetic information. Here, we describe mechanisms by which oncogenes can interfere with DNA replication thereby causing DNA replication stress and genome instability. Further, we describe cellular and systemic responses to these insults with a focus on DNA replication restart pathways. Finally, we discuss the therapeutic potential of exploiting intrinsic replicative stress in cancer cells for targeted therapy.

Published
2016
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7. High levels of an endothelial dysfunction marker (sVCAM-1) are associated with injurious and recurrent falls and mortality over a 5-year interval in an older population

Author

Thomas G. Travison, Margaret Gagnon, Lewis A. Lipsitz, Daniel Habtemariam, Sophie Boyer, Gregory A. Wellenius, Farzaneh A. Sorond, Achille Edem Tchalla, Ikechukwu Iloputaife, Thierry Dantoine, Handicap, Activité, Vieillissement, Autonomie, Environnement (HAVAE), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), and Université Laval [Québec] (ULaval)

Subjects
Male, Aging, medicine.medical_specialty, Time Factors, Adhesion molecule, Vascular Cell Adhesion Molecule-1, Recurrent falls, 030204 cardiovascular system & hematology, Rate ratio, Biochemistry, Gastroenterology, Article, Older population, 03 medical and health sciences, 0302 clinical medicine, Endocrinology, Elderly, Internal medicine, Genetics, medicine, Humans, 030212 general & internal medicine, Prospective Studies, Endothelial dysfunction, Mortality, Prospective cohort study, Molecular Biology, Survival analysis, Aged, Aged, 80 and over, business.industry, Hazard ratio, Cell Biology, Injurious falls, 16. Peace & justice, medicine.disease, Survival Analysis, 3. Good health, Increased risk, Solubility, Accidental Falls, Female, Independent Living, business, Biomarkers, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Boston
Abstract

International audience; We investigated the association between elevated plasma concentrations of circulating soluble Vascular Cell Adhesion Molecule-1 (sVCAM-1) and injurious falls and mortality over a 5-year period. We studied the prospective relationship between levels of circulating adhesion molecules and falls in 680 community-dwelling participants in the MOBILIZE Boston Study. The mean sVCAM-1 (±SD) concentration was 1192 ± 428 ng/mL. Over 5-years of follow-up, 10.2% of participants died. The baseline sVCAM-1 (±SD) concentration was 1434 ± 511 ng/mL in those who died vs. 1162 ± 402 ng/mL in those who survived (P

Published
2018
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8. Life-Threatening Pneumopathy and U urealyticum in a STAT3-Deficient Hyper-IgE Syndrome Patient

Author

Ludovic Lemée, Christophe Marguet, Sophie Boyer, Capucine Picard, Steven Grangé, Guillaume Deverrière, Alain Fischer, Mzembaba, Sandy, CHU Rouen, Normandie Université (NU), Groupe de Recherche sur l'Adaptation Microbienne (GRAM 2.0), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Service de soins intensifs [CHU Rouen], Imagine - Institut des maladies génétiques (IMAGINE - U1163), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre de Référence Déficits Immunitaires Héréditaires (CEREDIH), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service d'immuno-hématologie pédiatrique [CHU Necker], Collège de France - Chaire Médecine expérimentale (A. Fischer), Collège de France (CdF (institution)), Service de pédiatrie médicale et médecine de l'adolescent [Rouen], Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Caen Normandie (UNICAEN), and Chaire Médecine expérimentale (A. Fischer)

Subjects
0301 basic medicine, Mycoplasma pneumoniae, STAT3-deficient HIES, [SDV.MP.PRO] Life Sciences [q-bio]/Microbiology and Parasitology/Protistology, medicine.disease_cause, [SDV.MP.PRO]Life Sciences [q-bio]/Microbiology and Parasitology/Protistology, autosomal dominant hyperimmunoglobulin E syndrome, Microbiology, Haemophilus influenzae, Immunodeficiency Syndrome, 03 medical and health sciences, Ureaplasma, medicine, Immunodeficiency, [SDV.MP.MYC]Life Sciences [q-bio]/Microbiology and Parasitology/Mycology, [SDV.MP.VIR] Life Sciences [q-bio]/Microbiology and Parasitology/Virology, biology, business.industry, medicine.disease, biology.organism_classification, [SDV.MP.MYC] Life Sciences [q-bio]/Microbiology and Parasitology/Mycology, [SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, 3. Good health, Pneumonia, 030104 developmental biology, Pediatrics, Perinatology and Child Health, Immunology, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, signal transducer and activator of transcription 3, [SDV.MP.BAC] Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, Hyperimmunoglobulin E syndrome, business, Ureaplasma urealyticum
Abstract

International audience; A deficiency in signal transducer and activator of transcription 3 (STAT3) is responsible for autosomal dominant hyperimmunoglobulin E syndrome, an immunodeficiency syndrome causing Staphylococcus aureus, Streptococcus pneumonia, Haemophilus influenzae, and, rarely, Pseudomonas aeruginosa and Aspergillus sp infections. Currently, intracellular pathogens are not targeted in the management of severe infections. The pathophysiologic mechanism of hyperimmunoglobulin E syndrome immunodeficiency has recently been linked to a disorder in the T helper 17 pathway and disruption of the interleukin -23/interleukin-17 axis. We report an unusual case of severe pleuropneumopathy by Ureaplasma urealyticum in a teenage girl with STAT3-deficient hyperimmunoglobulin E syndrome (STAT3 HIES). A previous case of severe lung infection by Mycoplasma pneumoniae has already been described in a STAT3-deficient patient, but U urealyticum has never been reported in patients with STAT3 HIES. After a review of the literature, it seems that the specific immunodeficiency pathway of STAT3 HIES exposes STAT3 HIES patients to Ureaplasma lung infections because the pathophysiology of STAT3 HIES and Ureaplasma is based on STAT3 and T helper 17 cells.

Published
2017
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9. A penicillin and metronidazole resistant Clostridium botulinum strain responsible for an infant botulism case

Author

Christelle Mazuet, Eun-Jeong Yoon, Christiane Bouchier, Sophie Boyer, Stéphanie Pignier, Martine Pestel-Caron, Djalal Meziane-Cherif, Clémentine Dumant-Forest, Michel R. Popoff, Christine Legeay, Isabelle Doehring, Patrice Courvalin, Philippe Bouvet, Jean Sautereau, Thierry Blanc, Suzana Quijano-Roy, Bactéries anaérobies et Toxines, Institut Pasteur [Paris], Agents antibactériens, Hôpital Charles Nicolle, Hôpital Charles Nicolle - CHU Rouen, Hôpital Raymond Poincaré, Assistance publique - Hôpitaux de Paris (AP-HP) - Hôpital Raymond Poincaré - Université Paris Descartes - Paris 5 (UPD5), Génomique (Plate-Forme), Centre de références maladies neuromusculaires, CHU Raymond Poincaré, Sequencing was performed at the GenomicsPlatform, member of 'France Génomique' consortium (ANR10-INBS-09-08).This work was supported by Institut Pasteur, Institut national de Veille Sanitaire, and byan unrestricted grant from Reckitt Benckiser., Groupe de Recherche sur les Antimicrobiens et les Micro-Organismes (GRAM 1.0), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU), Service de pédiatrie médicale et médecine de l'adolescent [Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Service de pédiatrie néonatale et réanimation - neuropédiatrie [CHU Rouen], Hôpital Charles Nicolle [Rouen]-CHU Rouen, Hôpital Raymond Poincaré [AP-HP], Génomique (Plate-Forme) - Genomics Platform, 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), Filière Neuromusculaire (FILNEMUS), Sequencing was performed at the Genomics Platform, member of 'France Génomique' consortium (ANR10-INBS-09-08). This work was supported by Institut Pasteur, Institut national de Veille Sanitaire, and by an unrestricted grant from Reckitt Benckiser., ANR-10-INBS-0009,France-Génomique,Organisation et montée en puissance d'une Infrastructure Nationale de Génomique(2010), Institut Pasteur [Paris] (IP), Hôpital Charles Nicolle [Rouen], and Normandie Université (NU)-Normandie Université (NU)-CHU Rouen

Subjects
0301 basic medicine, Microbiology (medical), infant botulism, Botulinum Toxins, medicine.drug_class, 030106 microbiology, Antibiotics, Microbial Sensitivity Tests, Penicillins, Biology, medicine.disease_cause, Microbiology, 03 medical and health sciences, Feces, Antibiotic resistance, metronidazole, Drug Resistance, Bacterial, Genes, Regulator, medicine, Clostridium botulinum, Humans, Botulism, Etest, botulism, Infant Botulism, Infant, Membrane Transport Proteins, General Medicine, Sequence Analysis, DNA, Penicillinase, medicine.disease, Virology, [SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, 3. Good health, Anti-Bacterial Agents, Penicillin, Metronidazole, Infectious Diseases, antibiotic-resistance, penicillin, Multigene Family, Female, [SDV.MP.BAC] Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, Genome, Bacterial, medicine.drug
Abstract

International audience; An infant botulism clinical course was characterized by several relapses despite therapy with amoxicillin and metronidazole. Botulism was confirmed by identification of botulinum toxin and C. botulinum in stools. A C. botulinum A2 strain resistant to penicillins and with heterogeneous resistance to metronidazole was isolated from stool samples up to 110 days after onset. Antibiotic susceptibility was tested by disk agar diffusion and minimum inhibitory concentrations were determined by Etest. Whole genome sequencing allowed detection of a gene cluster composed of blaCBP for a novel penicillinase, blaI for a regulator, and blaR1 for a membrane bound penicillin receptor in the chromosome of the C. botulinum isolate. The purified recombinant penicillinase was assayed. Resistance to β-lactams was in agreement with the kinetic parameters of the enzyme. In addition, the β-lactamase gene cluster was found in three C. botulinum genomes in databanks and in two out of 62 genomes of our collection, all the strains belonging to group I C. botulinum. This is the first report of a C. botulinum isolate resistant to penicillins. This stresses the importance of antibiotic susceptibility testing for adequate therapy of botulism.

Published
2016
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10. DNA synthesis by Pol η promotes fragile site stability by preventing under-replicated DNA in mitosis

Author

Christophe Cazaux, Valeria Naim, Marietta Y.W.T. Lee, Filippo Rosselli, Anne Sophie Boyer, Kristin A. Eckert, Erin Walsh, Laurie Rey, Valérie Bergoglio, Gaëlle Legube, Jean Sébastien Hoffmann, Centre de Recherches en Cancérologie de Toulouse (CRCT), Université Toulouse III - Paul Sabatier (UT3), 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), Pennylvania State University College of Medicine, Stabilité Génétique et Oncogenèse (UMR 8200), Université Paris-Sud - Paris 11 (UP11)-Institut Gustave Roussy (IGR)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Biologie Cellulaire et Moléculaire du Contrôle de la Prolifération (LBCMCP), 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)-Centre de Biologie Intégrative (CBI), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), New York Medical College (NYMC), Institut de pharmacologie et de biologie structurale (IPBS), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)

Subjects
DNA Replication, DNA polymerase, DNA repair, DNA polymerase II, [SDV]Life Sciences [q-bio], Mitosis, DNA-Directed DNA Polymerase, DNA polymerase delta, Article, 03 medical and health sciences, 0302 clinical medicine, Control of chromosome duplication, Stress, Physiological, Cell Line, Tumor, Humans, Homologous Recombination, Research Articles, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology, Cell Nucleus, 0303 health sciences, biology, Chromosome Fragile Sites, Chromosome Fragility, Inverted Repeat Sequences, DNA replication, Cell Biology, Base excision repair, Processivity, Molecular biology, 030220 oncology & carcinogenesis, S Phase Cell Cycle Checkpoints, biology.protein, DNA, B-Form, Protein Binding
Abstract

Pol η–dependent DNA synthesis at stalled replication forks during S phase suppresses chronic fragile site instability by preventing checkpoint-blind under-replicated DNA in mitosis., Human DNA polymerase η (Pol η) is best known for its role in responding to UV irradiation–induced genome damage. We have recently observed that Pol η is also required for the stability of common fragile sites (CFSs), whose rearrangements are considered a driving force of oncogenesis. Here, we explored the molecular mechanisms underlying this newly identified role. We demonstrated that Pol η accumulated at CFSs upon partial replication stress and could efficiently replicate non-B DNA sequences within CFSs. Pol η deficiency led to persistence of checkpoint-blind under-replicated CFS regions in mitosis, detectable as FANCD2-associated chromosomal sites that were transmitted to daughter cells in 53BP1-shielded nuclear bodies. Expression of a catalytically inactive mutant of Pol η increased replication fork stalling and activated the replication checkpoint. These data are consistent with the requirement of Pol η–dependent DNA synthesis during S phase at replication forks stalled in CFS regions to suppress CFS instability by preventing checkpoint-blind under-replicated DNA in mitosis.

Published
2013
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11. Genetic and biochemical characterisation of OXA-232, a carbapenem-hydrolysing class D β-lactamase from Enterobacteriaceae

Author

Olivier Belmonte, Laurent Poirel, Sophie Boyer, Patrice Nordmann, Anaïs Potron, Emilie Rondinaud, Sabine Camiade, Université Paris-Sud [Le Kremlin-Bicêtre] (Faculté de Médecine), and AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre)

Subjects
Carbapenem, Klebsiella pneumoniae, medicine.disease_cause, Polymerase Chain Reaction, law.invention, Plasmid, law, polycyclic compounds, Pharmacology (medical), Polymerase chain reaction, ComputingMilieux_MISCELLANEOUS, Phylogeny, chemistry.chemical_classification, 0303 health sciences, integumentary system, biology, General Medicine, Enterobacteriaceae, 3. Good health, Amino acid, Anti-Bacterial Agents, Infectious Diseases, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, France, medicine.drug, Microbiology (medical), Sequence analysis, Molecular Sequence Data, India, Microbial Sensitivity Tests, beta-Lactams, beta-Lactam Resistance, beta-Lactamases, Microbiology, 03 medical and health sciences, medicine, Escherichia coli, Humans, 030304 developmental biology, 030306 microbiology, Sequence Analysis, DNA, biochemical phenomena, metabolism, and nutrition, biology.organism_classification, chemistry, Amino Acid Substitution, Carbapenems, bacteria
Abstract

Three enterobacterial isolates (two Klebsiella pneumoniae and one Escherichia coli) were recovered from three patients transferred from India to France in 2011. All three isolates were resistant or of intermediate susceptibility to all β-lactams and of decreased susceptibility to carbapenems. These three isolates expressed a novel carbapenem-hydrolysing β-lactamase, OXA-232, differing from OXA-181 and OXA-48 by one and five amino acid substitutions, respectively. Compared with OXA-181, OXA-232 had a lower ability to hydrolyse carbapenems but conversely possessed higher hydrolytic activities against penicillins. The bla(OXA-232) gene was located on a 6.1-kb ColE-type non-conjugative plasmid.

Published
2012
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12. Transforming primary healthcare by including the stakeholders involved in delivering care to people living in poverty: EQUIhealThY study protocol

Author

Catherine Hudon, Francine Lemire, Ann C. Macaulay, Jeannie Haggerty, Alexandrine Boudreault-Fournier, Sophie Boyer, Martin Lemieux, Émilie Goulet, Mireille Lambert, Luce Pélissier-Simard, Sophie Dupéré, Pierre Pluye, Marianne De Laat, Isabelle Gaboury, Christine Loignon, Martin Fortin, and Louise Champagne

Subjects
Male, Participatory research, Canada, Community-Based Participatory Research, Interprofessional Relations, Participatory action research, Knowledge transfer, Medically Underserved Area, Health informatics, Community Networks, Health administration, InformationSystems_GENERAL, 03 medical and health sciences, Study Protocol, 0302 clinical medicine, Nursing, Poverty Areas, Health care, Photovoice, Medicine, Humans, 030212 general & internal medicine, Healthcare Disparities, 10. No inequality, Poverty, Qualitative Research, 030505 public health, Primary Health Care, business.industry, Nursing research, Health Policy, 1. No poverty, Middle Aged, Primary care, 3. Good health, Research Design, Social competence, Female, 0305 other medical science, business, Delivery of Health Care
Abstract

Background Ensuring access to timely and appropriate primary healthcare for people living in poverty is an issue facing all countries, even those with universal healthcare systems. The transformation of healthcare practices and organization could be improved by involving key stakeholders from the community and the healthcare system in the development of research interventions. The aim of this project is to stimulate changes in healthcare organizations and practices by encouraging collaboration between care teams and people living in poverty. Our objectives are twofold: 1) to identify actions required to promote the adoption of professional practices oriented toward social competence in primary care teams; and 2) to examine factors that would encourage the inclusion of people living in poverty in the process of developing social competence in healthcare organizations. Methods/design This study will use a participatory action research design applied in healthcare organizations. Participatory research is an increasingly recognized approach that is helpful for involving the people for whom the research results are intended. Our research team consists of 19 non-academic researchers, 11 academic researchers and six partners. A steering committee composed of academic researchers and stakeholders will have a decision-making role at each step, including knowledge dissemination and recommendations for new interventions. In this project we will adopt a multiphase approach and will use a variety of methods, including photovoice, group discussions and interviews. Discussion The proposed study will be one of only a few using participatory research in primary care to foster changes aimed at enhancing quality and access to care for people living in poverty. To our knowledge this will be the first study to use photovoice in healthcare organizations to promote new interventions. Our project includes partners who are targeted for practice changes and improvements in delivering primary care to persons living in poverty. By involving knowledge users, including service recipients, our study is more likely to produce a transformation of professional practices and encourage healthcare organizations to take into account the needs of persons living in poverty.

Published
2013

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