29 results on '"Renaud D"'
Search Results
2. From newborn to puberty
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Fischer-Tlustos, A.J., Renaud, D. L., and Steele, M. A.
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Whole milk ,Animal science ,Dairy heifer ,medicine.medical_treatment ,medicine ,food and beverages ,Colostrum ,Weaning ,Health and development ,Passive immunity ,Biology - Abstract
Proper nutritional management during the first year of the calf’s life is essential in maximizing health and productivity. Feeding a sufficient volume of colostrum early in life is crucial to ensure the transfer of passive immunity and research has begun to characterize the additional bioactive compounds in colostrum and transition milk that can benefit calf development. We know that it is important to feed elevated levels of whole milk or milk replacer during the initial weeks of life, when starter intake is negligible, but further research regarding the effects of feeding large volumes of traditional milk replacers compared to whole milk on calf metabolism, health and development is required. When elevated levels of milk are fed preweaning, calves are often susceptible to production challenges during weaning, which can be mitigated by weaning gradually and later in life. It is also becoming clear that postweaning diets, which are often overlooked, can have profound effects on heifer growth and reproductive development. It is clear that a multitude of differing strategies to raise dairy calves exist; yet, it is up to the dairy research and industry communities to educate producers on specific practices that will maximize heifer development, immunity, health and ultimately the profitability of their operations., American Association of Bovine Practitioners Proceedings of the Annual Conference, 2020
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- 2020
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3. Verbesserte hausärztliche Versorgung für Pflegeheimbewohner/innen durch neuorganisierte interprofessionelle Zusammenarbeit – das Projekt 'SaarPHIR'
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Piotrowski, A, Laag, S, Meyer, M, Renaud, D, Lehr, T, Müller, MA, and Köberlein-Neu, J
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ddc: 610 ,610 Medical sciences ,Medicine - Abstract
Hintergrund: In Deutschland ist jede/r vierte Pflegebedürftige in einer stationären Einrichtung untergebracht [ref:1]. Verglichen mit Menschen, die zu Hause gepflegt werden, sind Bewohner von stationären Pflegeeinrichtungen im Durchschnitt älter und weisen größere[zum vollständigen Text gelangen Sie über die oben angegebene URL], 18. Deutscher Kongress für Versorgungsforschung (DKVF)
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- 2019
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4. Assessing the utility of leukocyte differential cell counts for predicting mortality risk in neonatal Holstein calves upon arrival and 72 hours postarrival at calf rearing facilities
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Von Konigslow, T. E., Renaud, D. L., Duffield, T. F., Higginson, V., and Kelton, D. F.
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medicine.medical_specialty ,medicine.diagnostic_test ,Animal health ,business.industry ,Production cycle ,Physical examination ,Disease ,Unknown age ,Antimicrobial use ,Calf rearing ,Emergency medicine ,medicine ,Physical exam ,business - Abstract
There is growing concern about the level of antimicrobial use and antimicrobial resistance in food producing animals. An area of opportunity to reduce antimicrobial use could be in the treatment of young calves during the first week following arrival at calf rearing facilities. Group metaphylaxis is common due to the unknown age and history of calves that undergo several stressful events prior to arrival, such as transportation, co-mingling and variable periods of fasting. It may be possible to reduce antimicrobial use at this stage in the production cycle without sacrificing animal health and welfare if the calves at highest risk of morbidity and mortality could be identified and treated in a highly selective manner. Recent studies have identified indicators of future risk for morbidity and mortality that can be measured at arrival such as biomarkers and physical exam factors. Bovine haematology, when used in conjunction with clinical examination findings, could be used to improve disease diagnosis. The objective of this study was to assess the utility of leukocyte differential cell counts taken at the time of arrival at a calf rearing facility and 72 hours post arrival for determining mortality risk during the production cycle., American Association of Bovine Practitioners Proceedings of the Annual Conference, 2019
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- 2019
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5. A prudent approach to antibiotic treatment of high-risk calves at arrival to a dairy beef facility
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Von Konigslow, T. E., Renaud, D. L., Kelton, D. F., and Duffield, T. F.
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medicine.medical_specialty ,medicine.drug_class ,business.industry ,Antibiotics ,Beef cattle ,Antimicrobial ,Antibiotic resistance ,Antimicrobial use ,Economic sustainability ,Emergency medicine ,Risk of mortality ,medicine ,business ,Dairy cattle - Abstract
The veal and dairy beef industries experience high levels of morbidity and mortality during the growing period impacting calf welfare and economic sustainability. A large proportion of calves arrive into these industries with identifiable health abnormalities and, in consequence, calves are at highest risk of mortality in their first few weeks after arrival. A conventional method for addressing this high-risk period is the use of group antimicrobial therapy during their first week in the facility. However, in light of growing concerns for the development of bacterial antimicrobial resistance (AMR), targeted strategies for antimicrobial use (AMU) in this high-risk period are being investigated. Selective antimicrobial treatment of only those calves identified as high risk can be used to reduce overall AMU and therefore reduce the selective pressures that confer AMR. The objective of this study was to compare morbidity and mortality for calves in the first 2 weeks at a dairy beef facility between groups receiving conventional group antimicrobial therapy (CT) and those receiving selective antimicrobial therapy (ST) at arrival., American Association of Bovine Practitioners Proceedings of the Annual Conference, 2018
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- 2018
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6. Risk factors associated with early mortality identified on arrival to a milk-fed veal facility
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Renaud, D. L., Kelton, D. F., LeBlanc, S. J., Ferguson, S., Haley, D. B., and Duffield, T. F.
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Economic sustainability ,business.industry ,Animal welfare ,Medicine ,Calf mortality ,business ,Demography - Abstract
The veal industry continues to have significant calf losses during the growing period representing a serious challenge to animal welfare and economic sustainability. As the majority of the mortality occurs in the first 21 days following arrival to veal farms, on arrival health status may be an important predictor of calf mortality. The objectives of this prospective case-control study were to describe the health status of male calves arriving at a veal farm and determine the risk factors associated with mortality in the first 21 days following arrival., American Association of Bovine Practitioners Proceedings of the Annual Conference, 2017
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- 2017
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7. Clinical outcomes following surgical management of deep infiltrating endometriosis
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Perrine Leborne, Stephanie Huberlant, Florent Masia, Renaud de Tayrac, Vincent Letouzey, and Lucie Allegre
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Medicine ,Science - Abstract
Abstract The main aim of the study was to evaluate severe post-operative complications following deep endometriosis surgery in a tertiary referral centre. This is a retrospective cohort study that included women who had surgery for deep infiltrating endometriosis between 1st January 2013 and 31st December 2019. Endometriosis was diagnosed based on clinical, imaging and histological parameters. We evaluated the rates of post-operative complications, potential risk factors for such complications and postoperative pregnancy rates. A total of 165 patients were included in the final analysis. The median follow-up was 63 (25–106) months. Thirty-seven patients (22.42%) had hysterectomy, 60 (36.81%) had ureterolysis and 44 (26.67%) had colorectal surgery. The overall and severe rates of post-operative complications were 16.20% (n = 23) and 2.42% (n = 4) respectively. Of the variables assessed, operative time and age were the only statistically significant risk factor for complications on multivariate analysis. Among women operated on for infertility, 34.5% (n = 20/58) got pregnant following surgery with 30% of these spontaneously. This study demonstrates acceptable overall and severe post-operative complications and pregnancy rates after deep endometriosis surgery. This information should help clinicians when counselling women to enable them making an informed choice about their management.
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- 2022
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8. Development of a code-free machine learning model for the classification of cataract surgery phases
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Samir Touma, Fares Antaki, and Renaud Duval
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Medicine ,Science - Abstract
Abstract This study assessed the performance of automated machine learning (AutoML) in classifying cataract surgery phases from surgical videos. Two ophthalmology trainees without coding experience designed a deep learning model in Google Cloud AutoML Video Classification for the classification of 10 different cataract surgery phases. We used two open-access publicly available datasets (total of 122 surgeries) for model training, validation and testing. External validation was performed on 10 surgeries issued from another dataset. The AutoML model demonstrated excellent discriminating performance, even outperforming bespoke deep learning models handcrafter by experts. The area under the precision-recall curve was 0.855. At the 0.5 confidence threshold cut-off, the overall performance metrics were as follows: sensitivity (81.0%), recall (77.1%), accuracy (96.0%) and F1 score (0.79). The per-segment metrics varied across the surgical phases: precision 66.7–100%, recall 46.2–100% and specificity 94.1–100%. Hydrodissection and phacoemulsification were the most accurately predicted phases (100 and 92.31% correct predictions, respectively). During external validation, the average precision was 54.2% (0.00–90.0%), the recall was 61.1% (0.00–100%) and specificity was 96.2% (91.0–99.0%). In conclusion, a code-free AutoML model can accurately classify cataract surgery phases from videos with an accuracy comparable or better than models developed by experts.
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- 2022
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9. Course of neuropsychiatric symptoms during a 4-year follow up in the REAL-FR cohort
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Sandrine Andrieu, Bruno Vellas, Renaud D, S. Gonfrier, and P. Robert
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Male ,Pediatrics ,medicine.medical_specialty ,Apathy ,Medicine (miscellaneous) ,Disease ,Neuropsychological Tests ,Cohort Studies ,Alzheimer Disease ,medicine ,Prevalence ,Humans ,Psychiatry ,Psychomotor Agitation ,Quality of Life Research ,Aged ,Nutrition and Dietetics ,Geriatrics gerontology ,business.industry ,medicine.disease ,Cohort ,Disease Progression ,Female ,France ,Geriatrics and Gerontology ,Alzheimer's disease ,medicine.symptom ,business ,Cohort study ,Follow-Up Studies - Abstract
The multicenter PHRC REAL-FR cohort study was designed to follow community-dwelling patients with a diagnosis of Alzheimer's Disease. The present study describes the evolution of neuropsychiatric symptoms (NPS) over 4 years.686 patients were recruited at baseline from 16 French clinical centers. 151 patients were followed over the 4-year interval with 5 Neuropsychiatric evaluations. Neuropsychiatric symptoms were assessed using the Neuropsychiatric inventory (NPI). NPS symptoms were divided into 4 subgroups according to the European Alzheimer Disease Consortium NPI analysis; psychotic subgroup (hallucinations, delusions), hyperactivity subgroup (agitation, aggression, euphoria, disinhibition, irritability, aberrant motor behavior), apathy subgroup (apathy, eating) and affective subgroup (depression, anxiety). Secondly we studied the evolution of the population divided in 4 groups: Apathy only, Hyperactivity only, both Apathy and Hyperactivity, no Apathy no Hyperactivity.At baseline, 100 patients (66%) presented with one or more clinically significant NPI symptoms. This figure increased to 88% at the end of 4-year follow-up (Linear by linear chi square, p0, 0012). Five NPI symptoms showed significant increases in prevalence: agitation (17,9 to 29,1%), apathy (43,0 to 62,9%) , disinhibition (2,6 to 14,6%), hallucination (2 to 4,6%) and aberrant motor behavior (13,9 to 29,1%). Prevalence of hyperactivity and apathy subgroups increased significantly during the follow-up while the prevalence of affective and psychotic subgroups did not. The number of patients with both apathy and hyperactivity increased (27% to 44%) during the follow-up period whereas the number of patients without these symptoms decreased (p = .009).The present study shows that 2 types of symptoms increased primarily over time: Apathy and Hyperactivity. The coexistence of such opposite symptoms over time according to our result should be taken into consideration by clinicians treating those patients.
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- 2012
10. The impact of valve surgery on short- and long-term mortality in left-sided infective endocarditis: do differences in methodological approaches explain previous conflicting results?
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Bannay, Aurélie, Hoen, Bruno, Duval, Xavier, Obadia, Jean-François, Selton-Suty, Christine, Le Moing, Vincent, Tattevin, Pierre, Iung, Bernard, Delahaye, François, Alla, François, Briancon, Stephanie, Bruneval, P, Danchin, N, Goulet, V., Roudaut, R, Salomon, R., Texier-Maugein, J., Vandenesh, F., Bernard, Y., Duchêne, F, Plesiat, P., Doco-Lecompte, T., Weber, M, Beguinot, Isabelle, Nazeyrollas, P., Vernet, V, Garin, B, Lacassin, F, Robert, J, Andremont, A, Garbaz, E, Leport, C, Mainardi, Jean Luc, Ruimy, R., Chidiac, C, Etienne, J, Boucherit, S., Bourezane, Y., Nouioua, W, Renaud, D, Bouvet, A, Collobert, G., Merad, B, Schlegel, L., BES, M, Service des maladies infectieuses et tropicales, Centre Hospitalier Régional Universitaire [Besançon] (CHRU Besançon)-Hôpital Saint-Jacques, Laboratoire Chrono-environnement - UFC (UMR 6249) (LCE), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Modèles et méthodes de l'évaluation thérapeutique des maladies chroniques, Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital Bichat - Claude Bernard, Service des maladies infectieuses et réanimation médicale, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou, Service de cardiologie, Université Paris Diderot - Paris 7 (UPD7)-AP-HP - Hôpital Bichat - Claude Bernard [Paris]-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP), Service Médecine légale et Droit de la Santé, Nancy Université, Service d'Epidémiologie et Evaluations Cliniques [CHRU Nancy] (Pôle S2R), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Ecole de santé publique, Université Paris Descartes - Paris 5 (UPD5)-Nancy Université, Risques, maladies chroniques et société : des systèmes biologiques aux populations, Université Henri Poincaré - Nancy 1 (UHP), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon)-Hôpital Saint-Jacques, Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Modèles et méthodes de l'évaluation thérapeutique des maladies chroniques (U738 / UMR_S738), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Diderot - Paris 7 (UPD7), Hôpital Louis Pradel [CHU - HCL], Hospices Civils de Lyon (HCL), Centre Hospitalier Universitaire de Nancy (CHU Nancy), Département Maladies Infectieuses et Tropicales, Hôpital Universitaire, Montpellier, France, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Service des maladies infectieuses et réanimation médicale [Rennes] = Infectious Disease and Intensive Care [Rennes], CHU Pontchaillou [Rennes], Université Paris Diderot - Paris 7 (UPD7)-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), Centre Hospitalier Régional Universitaire [Besançon] ( CHRU Besançon ) -Hôpital Saint-Jacques, Laboratoire Chrono-environnement ( LCE ), Université Bourgogne Franche-Comté ( UBFC ) -Université de Franche-Comté ( UFC ) -Centre National de la Recherche Scientifique ( CNRS ), Université Paris Diderot - Paris 7 ( UPD7 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Hôpital Pontchaillou, Assistance publique - Hôpitaux de Paris (AP-HP)-AP-HP - Hôpital Bichat - Claude Bernard [Paris]-Université Paris Diderot - Paris 7 ( UPD7 ), Service d'Epidémiologie et Evaluations Cliniques [CHRU Nancy] ( Pôle S2R ), Centre Hospitalier Régional Universitaire de Nancy ( CHRU Nancy ), Université Paris Descartes - Paris 5 ( UPD5 ) -Nancy Université, Laboratoire Chrono-environnement - UFC (UMR 6249) ( LCE ), Université Bourgogne Franche-Comté [COMUE] ( UBFC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Franche-Comté ( UFC ), Service des maladies infectieuses et réanimation médicale [Rennes], Hôpital Pontchaillou-Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)
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Male ,medicine.medical_specialty ,Cross-sectional study ,Population ,Heart Valve Diseases ,Kaplan-Meier Estimate ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,[SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases ,Internal medicine ,medicine ,Endocarditis ,Humans ,030212 general & internal medicine ,Prospective Studies ,education ,Prospective cohort study ,Aged ,education.field_of_study ,Proportional hazards model ,business.industry ,Hazard ratio ,Endocarditis, Bacterial ,Length of Stay ,Middle Aged ,medicine.disease ,Confidence interval ,3. Good health ,Surgery ,[ SDV.MHEP.MI ] Life Sciences [q-bio]/Human health and pathology/Infectious diseases ,Cross-Sectional Studies ,Treatment Outcome ,Infective endocarditis ,[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie ,Female ,Cardiology and Cardiovascular Medicine ,business - Abstract
International audience; Aims The aim of this study was to evaluate the effect of valve surgery (VS) in infective endocarditis (IE) on 5-year mortality and to evaluate whether conflicting results reported by previous studies could be due to differences in their methodological approaches. Methods and results Four hundred and forty-nine patients with a definite left-sided IE were selected from a prospective, population-based study. Association between VS and 5-year mortality was examined with a Cox model. To determine the impact of different methodological approaches, we also analysed the relationship between VS and mortality in our database, according to each method used in the five previous studies. Valve surgery was performed in 240 patients (53%). It was associated with an increase in short-term mortality [within the first 14 post-operative days; adjusted hazard ratio (HR), 3.69; 95% confidence interval (CI), 2.17-6.25; P < 0.0001] and a decrease in long-term mortality (adjusted HR, 0.55; 95% CI, 0.35-0.87; P = 0.01). At least 188 days of follow-up were required for VS to provide an overall survival advantage. When applying each study's method to our database, we obtained results similar to those reported. Conclusion Previous conflicting results appear to be related to differences in statistical methods. When using appropriate models, we found that VS was significantly associated with reduced long-term mortality.
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- 2009
11. ChREBPβ is dispensable for the control of glucose homeostasis and energy balance
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Emeline Recazens, Geneviève Tavernier, Jérémy Dufau, Camille Bergoglio, Fadila Benhamed, Stéphanie Cassant-Sourdy, Marie-Adeline Marques, Sylvie Caspar-Bauguil, Alice Brion, Laurent Monbrun, Renaud Dentin, Clara Ferrier, Mélanie Leroux, Pierre-Damien Denechaud, Cedric Moro, Jean-Paul Concordet, Catherine Postic, Etienne Mouisel, and Dominique Langin
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Metabolism ,Medicine - Abstract
Impaired glucose metabolism is observed in obesity and type 2 diabetes. Glucose controls gene expression through the transcription factor ChREBP in liver and adipose tissues. Mlxipl encodes 2 isoforms: ChREBPα, the full-length form (translocation into the nucleus is under the control of glucose), and ChREBPβ, a constitutively nuclear shorter form. ChREBPβ gene expression in white adipose tissue is strongly associated with insulin sensitivity. Here, we investigated the consequences of ChREBPβ deficiency on insulin action and energy balance. ChREBPβ-deficient male and female C57BL6/J and FVB/N mice were produced using CRISPR/Cas9-mediated gene editing. Unlike global ChREBP deficiency, lack of ChREBPβ showed modest effects on gene expression in adipose tissues and the liver, with variations chiefly observed in brown adipose tissue. In mice fed chow and 2 types of high-fat diets, lack of ChREBPβ had moderate effects on body composition and insulin sensitivity. At thermoneutrality, ChREBPβ deficiency did not prevent the whitening of brown adipose tissue previously reported in total ChREBP-KO mice. These findings revealed that ChREBPβ is dispensable for metabolic adaptations to nutritional and thermic challenges.
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- 2022
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12. Prognostic indicators and outcomes of hospitalised COVID-19 patients with neurological disease: An individual patient data meta-analysis
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Bhagteshwar Singh, Suzannah Lant, Sofia Cividini, Jonathan W. S. Cattrall, Lynsey C. Goodwin, Laura Benjamin, Benedict D. Michael, Ayaz Khawaja, Aline de Moura Brasil Matos, Walid Alkeridy, Andrea Pilotto, Durjoy Lahiri, Rebecca Rawlinson, Sithembinkosi Mhlanga, Evelyn C. Lopez, Brendan F. Sargent, Anushri Somasundaran, Arina Tamborska, Glynn Webb, Komal Younas, Yaqub Al Sami, Heavenna Babu, Tristan Banks, Francesco Cavallieri, Matthew Cohen, Emma Davies, Shalley Dhar, Anna Fajardo Modol, Hamzah Farooq, Jeffrey Harte, Samuel Hey, Albert Joseph, Dileep Karthikappallil, Daniel Kassahun, Gareth Lipunga, Rachel Mason, Thomas Minton, Gabrielle Mond, Joseph Poxon, Sophie Rabas, Germander Soothill, Marialuisa Zedde, Konstantin Yenkoyan, Bruce Brew, Erika Contini, Lucette Cysique, Xin Zhang, Pietro Maggi, Vincent van Pesch, Jérome Lechien, Sven Saussez, Alex Heyse, Maria Lúcia Brito Ferreira, Cristiane N. Soares, Isabel Elicer, Laura Eugenín-von Bernhardi, Waleng Ñancupil Reyes, Rong Yin, Mohammed A. Azab, Foad Abd-Allah, Ahmed Elkady, Simon Escalard, Jean-Christophe Corvol, Cécile Delorme, Pierre Tattevin, Kévin Bigaut, Norbert Lorenz, Daniel Hornuss, Jonas Hosp, Siegbert Rieg, Dirk Wagner, Benjamin Knier, Paul Lingor, Andrea Sylvia Winkler, Athena Sharifi-Razavi, Shima T. Moein, SeyedAhmad SeyedAlinaghi, Saeidreza JamaliMoghadamSiahkali, Mauro Morassi, Alessandro Padovani, Marcello Giunta, Ilenia Libri, Simone Beretta, Sabrina Ravaglia, Matteo Foschi, Paolo Calabresi, Guido Primiano, Serenella Servidei, Nicola Biagio Mercuri, Claudio Liguori, Mariangela Pierantozzi, Loredana Sarmati, Federica Boso, Silvia Garazzino, Sara Mariotto, Kimani N. Patrick, Oana Costache, Alexander Pincherle, Frederikus A. Klok, Roger Meza, Verónica Cabreira, Sofia R. Valdoleiros, Vanessa Oliveira, Igor Kaimovsky, Alla Guekht, Jasmine Koh, Eva Fernández Díaz, José María Barrios-López, Cristina Guijarro-Castro, Álvaro Beltrán-Corbellini, Javier Martínez-Poles, Alba María Diezma-Martín, Maria Isabel Morales-Casado, Sergio García García, Gautier Breville, Matteo Coen, Marjolaine Uginet, Raphaël Bernard-Valnet, Renaud Du Pasquier, Yildiz Kaya, Loay H. Abdelnour, Claire Rice, Hamish Morrison, Sylviane Defres, Saif Huda, Noelle Enright, Jane Hassell, Lucio D’Anna, Matthew Benger, Laszlo Sztriha, Eamon Raith, Krishna Chinthapalli, Ross Nortley, Ross Paterson, Arvind Chandratheva, David J. Werring, Samir Dervisevic, Kirsty Harkness, Ashwin Pinto, Dinesh Jillella, Scott Beach, Kulothungan Gunasekaran, Ivan Rocha Ferreira Da Silva, Krishna Nalleballe, Jonathan Santoro, Tyler Scullen, Lora Kahn, Carla Y. Kim, Kiran T. Thakur, Rajan Jain, Thirugnanam Umapathi, Timothy R. Nicholson, James J. Sejvar, Eva Maria Hodel, The Brain Infections Global COVID-Neuro Network Study Group, Catrin Tudur Smith, and Tom Solomon
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Medicine ,Science - Abstract
Background Neurological COVID-19 disease has been reported widely, but published studies often lack information on neurological outcomes and prognostic risk factors. We aimed to describe the spectrum of neurological disease in hospitalised COVID-19 patients; characterise clinical outcomes; and investigate factors associated with a poor outcome. Methods We conducted an individual patient data (IPD) meta-analysis of hospitalised patients with neurological COVID-19 disease, using standard case definitions. We invited authors of studies from the first pandemic wave, plus clinicians in the Global COVID-Neuro Network with unpublished data, to contribute. We analysed features associated with poor outcome (moderate to severe disability or death, 3 to 6 on the modified Rankin Scale) using multivariable models. Results We included 83 studies (31 unpublished) providing IPD for 1979 patients with COVID-19 and acute new-onset neurological disease. Encephalopathy (978 [49%] patients) and cerebrovascular events (506 [26%]) were the most common diagnoses. Respiratory and systemic symptoms preceded neurological features in 93% of patients; one third developed neurological disease after hospital admission. A poor outcome was more common in patients with cerebrovascular events (76% [95% CI 67–82]), than encephalopathy (54% [42–65]). Intensive care use was high (38% [35–41]) overall, and also greater in the cerebrovascular patients. In the cerebrovascular, but not encephalopathic patients, risk factors for poor outcome included breathlessness on admission and elevated D-dimer. Overall, 30-day mortality was 30% [27–32]. The hazard of death was comparatively lower for patients in the WHO European region. Interpretation Neurological COVID-19 disease poses a considerable burden in terms of disease outcomes and use of hospital resources from prolonged intensive care and inpatient admission; preliminary data suggest these may differ according to WHO regions and country income levels. The different risk factors for encephalopathy and stroke suggest different disease mechanisms which may be amenable to intervention, especially in those who develop neurological symptoms after hospital admission.
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- 2022
13. Slightly different metabolomic profiles are associated with high or low weight duck foie gras.
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Bara Lo, Nathalie Marty-Gasset, Helene Manse, Cecile Canlet, Renaud Domitile, and Herve Remignon
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Medicine ,Science - Abstract
Understanding the evolution of fatty liver metabolism of ducks is a recurrent issue for researchers and industry. Indeed, the increase in weight during the overfeeding period leads to an important change in the liver metabolism. However, liver weight is highly variable at the end of overfeeding within a batch of animals reared, force-fed and slaughtered in the same way. For this study, we performed a proton nuclear magnetic resonance (1H-NMR) analysis on two classes of fatty liver samples, called low-weight liver (weights between 550 and 599 g) and high-weight liver (weights above 700 g). The aim of this study was to identify the differences in metabolism between two classes of liver weight (low and high). Firstly, the results suggested that increased liver weight is associated with higher glucose uptake leading to greater lipid synthesis. Secondly, this increase is probably also due to a decline in the level of export of triglycerides from the liver by maintaining them at high hepatic concentration levels, but also of hepatic cholesterol. Finally, the increase in liver weight could lead to a significant decrease in the efficiency of aerobic energy metabolism associated with a significant increase in the level of oxidative stress. However, all these hypotheses will have to be confirmed in the future, by studies on plasma levels and specific assays to validate these results.
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- 2022
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14. Alcohol consumption and neurocognitive deficits in people with well-treated HIV in Switzerland.
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Katharine E A Darling, Isabella Locatelli, Nadia Benghalem, Isaure Nadin, Alexandra Calmy, Klemens Gutbrod, Christoph Hauser, Peter Brugger, Barbara Hasse, Helen Kovari, Ursi Kunze, Marcel Stoeckle, Christophe Fux, Stefania Rossi, Caroline Di Benedetto, Severin Früh, Patrick Schmid, Philip E Tarr, Jean-Bernard Daeppen, Renaud Du Pasquier, Matthias Cavassini, and NAMACO Study Group, Swiss HIV Cohort Study
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Medicine ,Science - Abstract
BackgroundHazardous alcohol consumption and HIV infection increase the risk of neurocognitive impairment (NCI). We examined the association between alcohol consumption and specific neurocognitive domain function in people with HIV (PWH) taking modern antiretroviral therapy.MethodsThe Neurocognitive Assessment in the Metabolic and Aging Cohort (NAMACO) study is a prospective, longitudinal, multicentre and multilingual (French, German and Italian) study of patients aged ≥45 years old enrolled in the Swiss HIV Cohort Study (SHCS). Baseline data from 981 study participants were examined. Five neurocognitive domains were evaluated: motor skills, speed of information processing, attention/working memory, executive function and verbal episodic memory. NCI was examined as binary (presence/absence) and continuous (mean z-score) outcomes against Alcohol Use Disorders Identification Test for Consumption (AUDIT-C) scores using logistic and linear regression models, respectively.ResultsMost participants (96.2%) had undetectable viral loads and 64% were aged >50 years old. Hazardous alcohol consumption was observed in 49.4% of participants and binge drinking in 4.2%. While alcohol consumption frequency and quantity were not associated with NCI, the practice of binge drinking was significantly associated with impaired motor skills and overall neurocognitive function in both binary (odds ratio, OR ≥2.0, P ConclusionsIn this cohort of PWH with well-controlled HIV infection, NCI was associated with the practice of binge drinking rather than alcohol consumption frequency or quantity. Longitudinal analysis of alcohol consumption and NCI in this population is currently underway.
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- 2021
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15. Models of protein production along the cell cycle: An investigation of possible sources of noise.
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Renaud Dessalles, Vincent Fromion, and Philippe Robert
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Medicine ,Science - Abstract
In this article, we quantitatively study, through stochastic models, the effects of several intracellular phenomena, such as cell volume growth, cell division, gene replication as well as fluctuations of available RNA polymerases and ribosomes. These phenomena are indeed rarely considered in classic models of protein production and no relative quantitative comparison among them has been performed. The parameters for a large and representative class of proteins are determined using experimental measures. The main important and surprising conclusion of our study is to show that despite the significant fluctuations of free RNA polymerases and free ribosomes, they bring little variability to protein production contrary to what has been previously proposed in the literature. After verifying the robustness of this quite counter-intuitive result, we discuss its possible origin from a theoretical view, and interpret it as the result of a mean-field effect.
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- 2020
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16. How many patients are eligible for disease-modifying treatment in Alzheimer’s disease? A French national observational study over 5 years
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Didier Hannequin, Florence Pasquier, Bruno Dubois, David Wallon, Julien Dumurgier, Stéphane Epelbaum, Thérèse Jonveaux, Annick Besozzi, Stéphane Pouponneau, Caroline Hommet, Laetitia Berly, Adrien Julian, Marc Paccalin, Julie Bellet, Claire Boutoleau-Bretonniere, Thiphaine Charriau, Olivier Rouaud, Olivier Madec, Aurélie Mouton, Renaud David, Samir Bekadar, Roxane Fabre, and Walter Deberdt
- Subjects
Medicine - Abstract
ObjectiveWe aimed to study the epidemiology of the prodromal and mild stages of Alzheimer’s disease (AD) patients who are eligible for clinical trials with disease-modifying therapies.SettingsWe analysed two large complementary databases to study the incidence and characteristics of this population on a nationwide scope in France from 2014 to 2018. The National Alzheimer Database contains data from 357 memory centres and 90 private neurologists. Data from 2014 to 2018 have been analysed.ParticipantsPatients, 50–85 years old, diagnosed with AD who had an Mini-Mental State Exam (MMSE) score of ≥20 were included. We excluded patients with mixed and non-AD neurocognitive disorders.Primary outcome measureDescriptive statistics of the population of interest was the primary measure.ResultsIn the National Alzheimer Database, 550 198 patients were assessed. Among them, 72 174 (13.1%) were diagnosed with AD and had an MMSE ≥20. Using corrections for specificity of clinical diagnosis of AD, we estimated that about 50 000 (9.1%) had a prodromal or mild AD. In the combined electronic clinical records database of 11 French expert memory centres, a diagnosis of prodromal or mild AD, certified by the use of cerebrospinal fluid AD biomarkers, could be established in 195 (1.3%) out of 14 596 patients.ConclusionsAD was not frequently diagnosed at a prodromal or mild dementia stage in France in 2014 to 2018. Diagnosis rarely relied on a pathophysiological marker even in expert memory centres. National databases will be valuable to monitor early stage AD diagnosis efficacy in memory centres when a disease-modifying treatment becomes available.
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- 2019
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17. Intensity-modulated radiotherapy for prostate cancer with seminal vesicle involvement (T3b): A multicentric retrospective analysis.
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Flora Goupy, Stéphane Supiot, David Pasquier, Igor Latorzeff, Ulrike Schick, Erik Monpetit, Geoffrey Martinage, Chloé Hervé, Bernadette Le Proust, Joel Castelli, and Renaud de Crevoisier
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Medicine ,Science - Abstract
OBJECTIVES:No study has reported clinical results of external-beam radiotherapy specifically for T3b prostate cancer. The possibility of escalating the dose to the involved seminal vesicles (ISV) while respecting the dose constraints in the organs at risk is thus so far not clearly demonstrated. The objective of the study was to analyze the dose distribution and the clinical outcome in a large series of patients who received IMRT for T3b prostate cancer. MATERIALS AND METHODS:This retrospective analysis included all patients who received IMRT and androgen deprivation therapy for T3b prostate cancer, between 2008 and 2017, in six French institutions, with available MRI images and dosimetric data. RESULTS:A total of 276 T3b patients were included. The median follow-up was 26 months. The median (range) prescribed doses (Gy) to the prostate and to the ISV were 77 (70-80) and 76 (46-80), respectively. The dose constraint recommendations were exceeded in less than 12% of patients for the rectum and the bladder. The 5-year risks of biochemical and clinical recurrences and cancer-specific death were 24.8%, 21.7%, and 10.3%, respectively. The 5-year risks of local, pelvic lymph node, and metastatic recurrences were 6.4%, 11.3%, and 15%, respectively. The number of involved lymph nodes (≤ 2 or ≥ 3) on MRI was the only significant prognostic factor in clinical recurrence (HR 9.86) and death (HR 2.78). Grade ≥ 2 acute and 5-year late toxicity rates were 13.2% and 12% for digestive toxicity, and 34% and 31.5% for urinary toxicity, respectively. The dose to the pelvic lymph node and the age were predictive of late digestive toxicity. CONCLUSION:IMRT for T3b prostate cancer allows delivery of a curative dose in the ISV, with a moderate digestive toxicity but a higher urinary toxicity. Lymph node involvement increases the risk of recurrence and death.
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- 2019
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18. Alzheimer's disease: Estimating its prevalence rate in a French geographical unit using the National Alzheimer Data Bank and national health insurance information systems.
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Laurent Bailly, Renaud David, Roland Chevrier, Jean Grebet, Mario Moncada, Alain Fuch, Vincent Sciortino, Philippe Robert, and Christian Pradier
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Medicine ,Science - Abstract
BackgroundReliable epidemiological data on Alzheimer's disease are scarce. However, these are necessary to adapt healthcare policy in terms of prevention, care and social needs related to this condition. To estimate the prevalence rate in the Alpes-Maritimes on the French Riviera, with a population of one million, we present a capture-recapture procedure applied to cases of Alzheimer's disease, based on two epidemiological surveillance systems.MethodsTo estimate the total number of patients affected by Alzheimer's disease, a capture-recapture study included a cohort of patients with Alzheimer's disease or receiving medications only eligible for use for this condition, recorded by a specific health insurance information system (Health Insurance Cohort, HIC), and those registered in the French National Alzheimer's Data Bank ("Banque Nationale Alzheimer", BNA) in 2010 and 2011. We applied Bayesian estimation of the Mt ecological model, taking into account age and gender as covariates, i.e. factors of inhomogeneous catchability.ResultsOverall, 5,562 patients with Alzheimer's disease were recorded, of whom only 856 were common to both information systems. Mean age and F/M sex ratio differed between BNA and HIC surveillance systems, 81 vs 84 years and 2.7 vs 3.2, respectively. A Bayesian estimation, with age and gender as covariates, yields an estimate of 15,060 cases of Alzheimer's disease [95%HPDI: 14,490-15,630] in the Alpes-Maritimes. The completeness of the HIC and BNA databases were respectively of 25.4% and 17.2%. The estimated prevalence rate among the population over 65 years old was 6.3% in 2010-2011.ConclusionsThis study demonstrates that it is possible to determine the number of subjects affected by Alzheimer's disease in a geographical unit, using available data from two existing surveillance systems in France, i.e. 15,060 cases in the Alpes-Maritimes. This is the first stage of a population-based approach in view of adapting available resources to the population's needs.
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- 2019
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19. A preclinical evaluation of polypropylene/polylacticacid hybrid meshes for fascial defect repair using a rat abdominal hernia model.
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Daniela Ulrich, Isabelle Le Teuff, Stephanie Huberlant, Patrick Carteron, Vincent Letouzey, and Renaud de Tayrac
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Medicine ,Science - Abstract
Synthetic mesh surgery for both abdominal and urogenital hernia repair is often unsatisfactory in the long-term due to postoperative complications. We hypothesized that a semi-degradable mesh hybrid may provide more appropriate biocompatibility with comparable mechanical properties. The aim was to compare its in vivo biocompatibility with a commercial polypropylene (PP) mesh.72 rats were randomly allocated to either our new composite mesh (monofilament PP mesh knitted with polylactic-acid-fibers (PLA)) or to a commercially available PP mesh that was used as a control. 15, 90, and 180 days after implantation into the rat abdomen mesh tissue complexes were analysed for erosion, contraction, foreign body reaction, tissue integration and biomechanical properties.No differences were seen in regard to clinical parameters including erosion, contraction or infection rates between the two groups. Biomechanical properties including breaking load, stiffness and deformation did not show any significant differences between the different materials at any timepoint. Macrophage staining did not reveal any significant differences between the two groups or between timepoints either. In regard to collagen I there was significantly less collagen I in the PP group compared to the PP/ PLA group at day 180. Collagen III did not show any significant differences at any timepoint between the two groups.A PP/PLA hybrid mesh, leaving a low amount of PP after PLA degradation seems to have comparable biomechanical properties like PP at 180 days due to enhanced collagen production without significant differences in erosion, contraction, herniation or infection rates.
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- 2017
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20. Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses.
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Joan Giménez, Ana Marçalo, Francisco Ramírez, Philippe Verborgh, Pauline Gauffier, Ruth Esteban, Lídia Nicolau, Enrique González-Ortegón, Francisco Baldó, César Vilas, José Vingada, Manuela G Forero, and Renaud de Stephanis
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Medicine ,Science - Abstract
The ecological role of species can vary among populations depending on local and regional differences in diet. This is particularly true for top predators such as the bottlenose dolphin (Tursiops truncatus), which exhibits a highly varied diet throughout its distribution range. Local dietary assessments are therefore critical to fully understand the role of this species within marine ecosystems, as well as its interaction with important ecosystem services such as fisheries. Here, we combined stomach content analyses (SCA) and stable isotope analyses (SIA) to describe bottlenose dolphins diet in the Gulf of Cadiz (North Atlantic Ocean). Prey items identified using SCA included European conger (Conger conger) and European hake (Merluccius merluccius) as the most important ingested prey. However, mass-balance isotopic mixing model (MixSIAR), using δ13C and δ15N, indicated that the assimilated diet consisted mainly on Sparidae species (e.g. seabream, Diplodus annularis and D. bellottii, rubberlip grunt, Plectorhinchus mediterraneus, and common pandora, Pagellus erythrinus) and a mixture of other species including European hake, mackerels (Scomber colias, S. japonicus and S. scombrus), European conger, red bandfish (Cepola macrophthalma) and European pilchard (Sardina pilchardus). These contrasting results highlight differences in the temporal and taxonomic resolution of each approach, but also point to potential differences between ingested (SCA) and assimilated (SIA) diets. Both approaches provide different insights, e.g. determination of consumed fish biomass for the management of fish stocks (SCA) or identification of important assimilated prey species to the consumer (SIA).
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- 2017
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21. Nomogram to predict rectal toxicity following prostate cancer radiotherapy.
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Jean-Bernard Delobel, Khemara Gnep, Juan David Ospina, Véronique Beckendorf, Ciprian Chira, Jian Zhu, Alberto Bossi, Taha Messai, Oscar Acosta, Joël Castelli, and Renaud de Crevoisier
- Subjects
Medicine ,Science - Abstract
To identify predictors of acute and late rectal toxicity following prostate cancer radiotherapy (RT), while integrating the potential impact of RT technique, dose escalation, and moderate hypofractionation, thus enabling us to generate a nomogram for individual prediction.In total, 972 patients underwent RT for localized prostate cancer, to a total dose of 70 Gy or 80 Gy, using two different fractionations (2 Gy or 2.5 Gy/day), by means of several RT techniques (3D conformal RT [3DCRT], intensity-modulated RT [IMRT], or image-guided RT [IGRT]). Multivariate analyses were performed to identify predictors of acute and late rectal toxicity. A nomogram was generated based on the logistic regression model used to predict the 3-year rectal toxicity risk, with its accuracy assessed by dividing the cohort into training and validation subgroups.Mean follow-up for the entire cohort was 62 months, ranging from 6 to 235. The rate of acute Grade ≥2 rectal toxicity was 22.2%, decreasing when combining IMRT and IGRT, compared to 3DCRT (RR = 0.4, 95%CI: 0.3-0.6, p
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- 2017
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22. A New Approach for Deep Gray Matter Analysis Using Partial-Volume Estimation.
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Guillaume Bonnier, Tobias Kober, Myriam Schluep, Renaud Du Pasquier, Gunnar Krueger, Reto Meuli, Cristina Granziera, and Alexis Roche
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Medicine ,Science - Abstract
INTRODUCTION:The existence of partial volume effects in brain MR images makes it challenging to understand physio-pathological alterations underlying signal changes due to pathology across groups of healthy subjects and patients. In this study, we implement a new approach to disentangle gray and white matter alterations in the thalamus and the basal ganglia. The proposed method was applied to a cohort of early multiple sclerosis (MS) patients and healthy subjects to evaluate tissue-specific alterations related to diffuse inflammatory or neurodegenerative processes. METHOD:Forty-three relapsing-remitting MS patients and nineteen healthy controls underwent 3T MRI including: (i) fluid-attenuated inversion recovery, double inversion recovery, magnetization-prepared gradient echo for lesion count, and (ii) T1 relaxometry. We applied a partial volume estimation algorithm to T1 relaxometry maps to gray and white matter local concentrations as well as T1 values characteristic of gray and white matter in the thalamus and the basal ganglia. Statistical tests were performed to compare groups in terms of both global T1 values, tissue characteristic T1 values, and tissue concentrations. RESULTS:Significant increases in global T1 values were observed in the thalamus (p = 0.038) and the putamen (p = 0.026) in RRMS patients compared to HC. In the Thalamus, the T1 increase was associated with a significant increase in gray matter characteristic T1 (p = 0.0016) with no significant effect in white matter. CONCLUSION:The presented methodology provides additional information to standard MR signal averaging approaches that holds promise to identify the presence and nature of diffuse pathology in neuro-inflammatory and neurodegenerative diseases.
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- 2016
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23. The Swiss Multiple Sclerosis Cohort-Study (SMSC): A Prospective Swiss Wide Investigation of Key Phases in Disease Evolution and New Treatment Options.
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Giulio Disanto, Pascal Benkert, Johannes Lorscheider, Stefanie Mueller, Jochen Vehoff, Chiara Zecca, Simon Ramseier, Lutz Achtnichts, Oliver Findling, Krassen Nedeltchev, Ernst-Wilhelm Radue, Till Sprenger, Christoph Stippich, Tobias Derfuss, Jean-François Louvion, Christian P Kamm, Heinrich P Mattle, Christoph Lotter, Renaud Du Pasquier, Myriam Schluep, Caroline Pot, Patrice H Lalive, Özgür Yaldizli, Claudio Gobbi, Ludwig Kappos, Jens Kuhle, and SMSC Scientific Board
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Medicine ,Science - Abstract
The mechanisms leading to disability and the long-term efficacy and safety of disease modifying drugs (DMDs) in multiple sclerosis (MS) are unclear. We aimed at building a prospective cohort of MS patients with standardized collection of demographic, clinical, MRI data and body fluids that can be used to develop prognostic indicators and biomarkers of disease evolution and therapeutic response. The Swiss MS Cohort (SMSC) is a prospective observational study performed across seven Swiss MS centers including patients with MS, clinically isolated syndrome (CIS), radiologically isolated syndrome or neuromyelitis optica. Neurological and radiological assessments and biological samples are collected every 6-12 months. We recruited 872 patients (clinically isolated syndrome [CIS] 5.5%, relapsing-remitting MS [RRMS] 85.8%, primary progressive MS [PPMS] 3.5%, secondary progressive MS [SPMS] 5.2%) between June 2012 and July 2015. We performed 2,286 visits (median follow-up 398 days) and collected 2,274 serum, plasma and blood samples, 152 cerebrospinal fluid samples and 1,276 brain MRI scans. 158 relapses occurred and expanded disability status scale (EDSS) scores increased in PPMS, SPMS and RRMS patients experiencing relapses. Most RRMS patients were treated with fingolimod (33.4%), natalizumab (24.5%) or injectable DMDs (13.6%). The SMSC will provide relevant information regarding DMDs efficacy and safety and will serve as a comprehensive infrastructure available for nested research projects.
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- 2016
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24. A Feasibility Study with Image-Based Rendered Virtual Reality in Patients with Mild Cognitive Impairment and Dementia.
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Valeria Manera, Emmanuelle Chapoulie, Jérémy Bourgeois, Rachid Guerchouche, Renaud David, Jan Ondrej, George Drettakis, and Philippe Robert
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Medicine ,Science - Abstract
Virtual Reality (VR) has emerged as a promising tool in many domains of therapy and rehabilitation, and has recently attracted the attention of researchers and clinicians working with elderly people with MCI, Alzheimer's disease and related disorders. Here we present a study testing the feasibility of using highly realistic image-based rendered VR with patients with MCI and dementia. We designed an attentional task to train selective and sustained attention, and we tested a VR and a paper version of this task in a single-session within-subjects design. Results showed that participants with MCI and dementia reported to be highly satisfied and interested in the task, and they reported high feelings of security, low discomfort, anxiety and fatigue. In addition, participants reported a preference for the VR condition compared to the paper condition, even if the task was more difficult. Interestingly, apathetic participants showed a preference for the VR condition stronger than that of non-apathetic participants. These findings suggest that VR-based training can be considered as an interesting tool to improve adherence to cognitive training in elderly people with cognitive impairment.
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- 2016
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25. Measurement of Neuropsychiatric Symptoms in Clinical Trials Targeting Alzheimer's Disease and Related Disorders
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Emmanuel Mulin, Renaud David, Patrick Mallea, and Philippe H. Robert
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neuropsychiatric symptoms ,assessment tools ,Alzheimer’s disease ,clinical trials ,actigraphy ,Medicine ,Pharmacy and materia medica ,RS1-441 - Abstract
Behavioral and psychological symptoms (BPSD) are now known to be frequently associated to cognitive and functional decline in Alzheimer‘s disease and related disorders. They are present since the early stages of the disease and have negative impact on the disease process. BPSD assessment is crucial in clinical practice and also in future clinical trials targeting disease-modifying therapies for dementia. In this article, we will first review current assessment tools for BPSD, mainly global and domain-specific scales, and new assessment methods, currently available or in development, including new scales, diagnostic criteria and new technologies such as ambulatory actigraphy.
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- 2010
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26. Tolerance and long-term MRI imaging of gadolinium-modified meshes used in soft organ repair.
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Vincent Letouzey, Stéphanie Huberlant, Arnaud Cornille, Sébastien Blanquer, Olivier Guillaume, Laurent Lemaire, Xavier Garric, and Renaud de Tayrac
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Medicine ,Science - Abstract
BackgroundSynthetic meshes are frequently used to reinforce soft tissues. The aim of this translational study is to evaluate tolerance and long-term MRI visibility of two recently developed Gadolinium-modified meshes in a rat animal model.Materials and methodsGadolinium-poly-ε-caprolactone (Gd-PCL) and Gadolinium-polymethylacrylate (Gd-PMA) modified meshes were implanted in Wistar rats and their tolerance was assessed daily. Inflammation and biocompatibility of the implants were assessed by histology and immunohistochemistry after 30 days post implantation. Implants were visualised by 7T and 3T MRI at day 30 and at day 90. Diffusion of Gadolinium in the tissues of the implanted animals was assessed by Inductively Coupled Plasma Mass Spectrometry.ResultsOverall Gd-PMA coated implants were better tolerated as compared to those coated with Gd-PCL. In fact, Gd-PMA implants were characterised by a high ratio collagen I/III and good vascularisation of the integration tissues. High resolution images of the coated mesh were obtained in vivo with experimental 7T as well as 3T clinical MRI. Mass spectrometry analyses showed that levels of Gadolinium in animals implanted with coated mesh were similar to those of the control group.ConclusionsMeshes coated with Gd-PMA are better tolerated as compared to those coated with Gd-PCL as no signs of erosion or significant inflammation were detected at 30 days post implantation. Also, Gd-PMA coated meshes were clearly visualised with both 7T and 3T MRI devices. This new technique of mesh optimisation may represent a valuable tool in soft tissue repair and management.
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- 2015
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27. Impact of Bacterial Vaginosis on Perineal Tears during Delivery: A Prospective Cohort Study.
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Vincent Letouzey, Sophie Bastide, Daniela Ulrich, Laurie Beccera, Mariella Lomma, Renaud de Tayrac, and Jean Philippe Lavigne
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Medicine ,Science - Abstract
Long term effects of perineal tears pose a major worldwide health issue for women during delivery. Since bacterial vaginosis is related to major obstacles in obstetrics the aim of this study was to determine the relationship between bacterial vaginosis and the occurrence of perineal tears during vaginal delivery.Between June 2013 and December 2013 pregnant women delivering after 37 weeks were recruited at one University hospital / tertiary care referral center in the course of this single-center, prospective cohort study. Bacterial vaginosis was assessed according to Nugent score method. Logistic-regression model was used to estimate odds ratios, adjusted for other risk factors to test the relationship between bacterial vaginosis and the occurrence of 1st to 4th degree perineal tears in women undergoing vaginal delivery.A total of 728 woman were included, 662 analyzed with a complete Nugent Score of the vaginal swab. The prevalence of 1st to 4th degree perineal tears was 35.8% (95% Confidence Interval (95%CI) = [32.2; 39.6]). The presence of BV was not significantly associated to the incidence of perineal tears neither in the univariate analysis (crude Odds Ratio = 1.43; 95%CI = [0.79; 2.60]; p = 0.235) nor in the multivariate analysis (adjusted Odds Ratio = 1.65; 95%CI = [0.81; 3.36]; p = 0.167). Instrumental delivery was the most important risk factor for perineal lacerations.There is no evidence that vaginosis is a risk factor for vaginal tears.ClinicalTrials.gov N° NCT01822782.
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- 2015
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28. Application of a hyaluronic acid gel after intrauterine surgery may improve spontaneous fertility: a randomized controlled trial in New Zealand White rabbits.
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Stephanie Huberlant, Herve Fernandez, Pierre Vieille, Mohamed Khrouf, Daniela Ulrich, Renaud deTayrac, and Vincent Letouzey
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Medicine ,Science - Abstract
Intrauterine adhesions (IUAs) are the most common complication after hysteroscopy in patients of reproductive age. Intra-abdominal anti-adhesion gel reduces the incidence of adhesions, but effects on fertility after uterine surgery are not known. The objective of our work was to evaluate the effect of intrauterine anti-adhesion gel on spontaneous fertility after repeated intrauterine surgery with induced experimental synechiae in the rabbit model.Twenty New Zealand White rabbits underwent a double uterine curettage 10 days apart and were randomized into two groups. Each rabbit served as its own control: one uterine tube was the treatment group (A), the second uterine tube was the control group (B) to avoid bias through other causes of infertility. Group A received a post curettage intrauterine instillation of anti-adhesion gel whereas group B, the control group, underwent curettage without instillation of the gel. After a recovery period, the rabbits were mated. An abdominal ultrasound performed 21 days after mating allowed us to diagnose pregnancy and quantify the number of viable fetuses.There was a significant difference in total fetuses in favor of group A, with an average of 3.7 (range, 0-9) total fetuses per tube against 2.1 (0-7) in group B (p = .04). The number of viable fetuses shows a trend in favor of group A, with an average of 3.4 (0-7) viable fetuses per tube against 1.9 (0-6) viable fetuses per tube in group B (p = .05).The use of immediate postoperative anti-adhesion gel improved fertility in an animal model after intrauterine surgery likely to cause uterine synechiae. This experimental model will permit comparison of different anti-adhesion solutions, including assessment of their tolerance and potential mucosal toxicity on embryonic development.
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- 2015
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29. Morbillivirus and Pilot Whale Deaths, Mediterranean Sea
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Antonio Fernández, Fernando Esperón, Pedro Herraéz, Antonio Espinosa de los Monteros, Cristina Clavel, Antonio Bernabé, J. Manuel Sánchez-Vizcaino, Philippe Verborgh, Renaud DeStephanis, Francisco Toledano, and Alejandro Bayón
- Subjects
pilot whales ,mortality ,morbillivirus ,dispatch ,Spain ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
An outbreak of a lethal morbillivirus infection of long-finned pilot whales occurred in the Mediterranean Sea from the end of October 2006 through April 2007. Sequence analysis of a 426-bp conserved fragment of the morbillivirus phosphoprotein gene indicates that the virus is more closely related to dolphin morbillivirus than to pilot whale morbillivirus.
- Published
- 2008
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