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Yves Reznik, Pascal Barat, Jérôme Bertherat, Claire Bouvattier, Frédéric Castinetti, Olivier Chabre, Philippe Chanson, Christine Cortet, Brigitte Delemer, Bernard Goichot, Damien Gruson, Laurence Guignat, Emmanuelle Proust-Lemoine, Marie-Laure Raffin Sanson, Rachel Reynaud, Dinane Samara Boustani, Dominique Simon, Antoine Tabarin, Delphine Zenaty
The French endocrinology society (SFE) and the French pediatric endocrinology society (DFSDP) have drawn up recommendations for the management of primary and secondary adrenal insufficiency in the adult and child, based on an analysis of the literature by 19 experts in 6 work-groups. A diagnosis of adrenal insufficiency should be suspected in the presence of a number of non-specific symptoms except hyperpigmentation which is observed in primary adrenal insufficiency. Diagnosis rely on plasma cortisol and ACTH measurement at 8am and/or the cortisol increase after synacthen administration...
January 12, 2018: Annales D'endocrinologie
Ali Bakiri, Jane Hubert, Romain Reynaud, Carole Lambert, Agathe Martinez, Jean-Hugues Renault, Jean-Marc Nuzillard
A new in silico method is introduced for the dereplication of natural metabolite mixtures based on HMBC and HSQC spectra that inform about short-range and long-range H-C correlations occurring in the carbon skeleton of individual chemical entities. Starting from the HMBC spectrum of a metabolite mixture, an algorithm was developed in order to recover individualized HMBC footprints of the mixture constituents. The collected H-C correlations are represented by a network of NMR peaks connected each other when sharing either a 1H or 13C chemical shift value...
January 10, 2018: Journal of Chemical Information and Modeling
Benjamin Coiffard, Matthieu Pelardy, Anderson D Loundou, Corine Nicolino-Brunet, Pascal Alexandre Thomas, Laurent Papazian, Françoise Dignat-George, Martine Reynaud-Gaubert
BACKGROUND Lymphocytes are targeted by immunosuppressive therapy in solid organ transplantation and they influence allograft outcome. MATERIAL AND METHODS Peripheral blood lymphocyte subsets (PBLS) determined by flow cytometry during the first year post-transplant from patients who underwent a first lung transplantation in a French University Hospital between December 2011 and July 2013 were retrospectively analyzed according to recipient characteristics and allograft outcome. RESULTS Fifty-seven recipients were enrolled and 890 PBLS were collected...
January 5, 2018: Annals of Transplantation: Quarterly of the Polish Transplantation Society
Pierre Touboul, Gilles Métris, Manuel Rodrigues, Yves André, Quentin Baghi, Joël Bergé, Damien Boulanger, Stefanie Bremer, Patrice Carle, Ratana Chhun, Bruno Christophe, Valerio Cipolla, Thibault Damour, Pascale Danto, Hansjoerg Dittus, Pierre Fayet, Bernard Foulon, Claude Gageant, Pierre-Yves Guidotti, Daniel Hagedorn, Emilie Hardy, Phuong-Anh Huynh, Henri Inchauspe, Patrick Kayser, Stéphanie Lala, Claus Lämmerzahl, Vincent Lebat, Pierre Leseur, Françoise Liorzou, Meike List, Frank Löffler, Isabelle Panet, Benjamin Pouilloux, Pascal Prieur, Alexandre Rebray, Serge Reynaud, Benny Rievers, Alain Robert, Hanns Selig, Laura Serron, Timothy Sumner, Nicolas Tanguy, Pieter Visser
According to the weak equivalence principle, all bodies should fall at the same rate in a gravitational field. The MICROSCOPE satellite, launched in April 2016, aims to test its validity at the 10^{-15} precision level, by measuring the force required to maintain two test masses (of titanium and platinum alloys) exactly in the same orbit. A nonvanishing result would correspond to a violation of the equivalence principle, or to the discovery of a new long-range force. Analysis of the first data gives δ(Ti,Pt)=[-1±9(stat)±9(syst)]×10^{-15} (1σ statistical uncertainty) for the titanium-platinum Eötvös parameter characterizing the relative difference in their free-fall accelerations...
December 8, 2017: Physical Review Letters
Jung-Mi Lee, Vinothini Govindarajah, Bryan Goddard, Ashwini Hinge, David E Muench, Marie-Dominique Filippi, Bruce Aronow, Jose A Cancelas, Nathan Salomonis, H Leighton Grimes, Damien Reynaud
Obesity is a chronic organismal stress that disrupts multiple systemic and tissue-specific functions. In this study, we describe the impact of obesity on the activity of the hematopoietic stem cell (HSC) compartment. We show that obesity alters the composition of the HSC compartment and its activity in response to hematopoietic stress. The impact of obesity on HSC function is progressively acquired but persists after weight loss or transplantation into a normal environment. Mechanistically, we establish that the oxidative stress induced by obesity dysregulates the expression of the transcription factor Gfi1 and that increased Gfi1 expression is required for the abnormal HSC function induced by obesity...
December 27, 2017: Journal of Experimental Medicine
Maéva Angélique Techer, Johanna Clémencet, Christophe Simiand, Patrick Turpin, Lionel Garnery, Bernard Reynaud, Hélène Delatte
With globalization the Western honey bee has become a nearly cosmopolitan species, but it was originally restricted to the Old World. This renowned model of biodiversity has diverged into five evolutionary lineages and several geographic "subspecies." If Apis mellifera unicolor is indubitably an African subspecies endemic to Madagascar, its relationship with honey bees from three archipelagos in the southwest Indian Ocean (SWIO) hotspot of biodiversity is misunderstood. We compared recent mtDNA diversity data to an original characterization of the nuclear diversity from honey bees in the Mascarenes and Comoros archipelagos, using 14 microsatellites, but also additional mtDNA tRNALeu-cox2 analysis...
2017: PloS One
S Durupt, M Puget, J C Lega, I Durieu, Q Reynaud
Q fever has extremely polymorphic features, and has been reported to be associated with positivity of several autoimmune antibodies. We report two cases of atypical Q fever with a clinical presentation highly suggestive of an inflammatory systemic disease with positivity of autoimmune antibodies, mimicking systemic lupus erythematosus.
January 1, 2017: Lupus
Christine Rousset-Jablonski, Quitterie Reynaud, Raphaëlle Nove-Josserand, Isabelle Ray-Coquard, Yahia Mekki, François Golfier, Isabelle Durieu
OBJECTIVES: Insufficient gynecological follow-up and cervical screening has been reported in women with cystic fibrosis (CF). Some of these patients will require a pulmonary transplantation, known to be associated with a higher risk of cervical dysplasia. The aim of this study was to explore the results of cervical screening in adult women with CF, and to report the prevalence of abnormal pap smear tests in this population. STUDY DESIGN: We retrospectively analyzed medical records of sexually active women with CF who attended a gynecological consultation in Lyon University CF referral center between June 2014 and December 2015...
December 9, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
J Vergier, J Fromonot, A Alvares De Azevedo Macedo, A Godefroy, E Marquant, R Guieu, M Tsimaratos, R Reynaud
INTRODUCTION: Diabetes insipidus is characterized by hypoosmotic polyuria related to deficiency of arginine-vasopressin (AVP) secretion (central diabetes insipidus, CDI) or renal insensitivity to AVP (nephrogenic diabetes insipidus, NDI). The water deprivation test with assessment of AVP activity is currently the gold standard for differential diagnosis in patients presenting polyuria-polydipsia syndrome. Nevertheless, it can be dangerous without proper surveillance and its interpretation may be challenging...
January 2018: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
Sina Reckel, Charlotte Gehin, Delphine Tardivon, Sandrine Georgeon, Tim Kükenshöner, Frank Löhr, Akiko Koide, Lena Buchner, Alejandro Panjkovich, Aline Reynaud, Sara Pinho, Barbara Gerig, Dmitri Svergun, Florence Pojer, Peter Güntert, Volker Dötsch, Shohei Koide, Anne-Claude Gavin, Oliver Hantschel
The two isoforms of the Bcr-Abl tyrosine kinase, p210 and p190, are associated with different leukemias and have a dramatically different signaling network, despite similar kinase activity. To provide a molecular rationale for these observations, we study the Dbl-homology (DH) and Pleckstrin-homology (PH) domains of Bcr-Abl p210, which constitute the only structural differences to p190. Here we report high-resolution structures of the DH and PH domains and characterize conformations of the DH-PH unit in solution...
December 13, 2017: Nature Communications
Philippe Chanson, Rachel Reynaud, Régis Coutant, Agnès Linglart, Marc Nicolino, Patrice Rodien, Françoise Borson-Chazot, Antoine Tabarin, Yves Le Bouc, Marie-Liesse Piketty, Anne-Sophie Gauchez, Didier Chevenne, Dominique Porquet, Jean-Claude Souberbielle
No abstract text is available yet for this article.
December 2017: Annales D'endocrinologie
Julie Faitg, Olivier Reynaud, Jean-Philippe Leduc-Gaudet, Gilles Gouspillou
One of the most obvious and deleterious changes occurring with aging is a progressive loss of skeletal muscle mass and strength, a physiological process named sarcopenia. Amongst the multiple theories that have been put forward to explain sarcopenia, the mitochondrial theory of aging, which postulates that the accumulation of mitochondrial dysfunctions with aging plays a causal role in muscle atrophy, has focused intense research effort and attention in the past decades. The generally accepted view of this theory is that, due to the reactive oxygen species (ROS) production inherent to respiratory chain activity, oxidative damage to mitochondrial proteins, lipids and DNA accumulates with aging...
November 2017: Médecine Sciences: M/S
Quentin Chevalier, Hind El Hadri, Patrice Petitjean, Martine Bouhnik-Le Coz, Stéphanie Reynaud, Bruno Grassl, Julien Gigault
Cigarette butts (CGB) are equivalent to plastic litter in terms of number of pieces released directly into the environment. Due to their small size and social use, CGB are commonly found in natural systems, and several questions have been raised concerning the contaminants that are released with CGB, including metals, organic species, and nanoparticles. The aim of the present study is to investigate the release of nanoscale particles from CGB by leaching with rainwater. After seven days of passive stirring of both smoked and unsmoked CGB in synthetic rainwater, the solutions were treated and analyzed by specific nano-analytical methods...
November 27, 2017: Chemosphere
Déborah Reynaud, Frédéric Sergent, Roland Abi Nahed, Sophie Brouillet, Mohamed Benharouga, Nadia Alfaidy
During the last decade, multiple animal models have been developed to mimic hallmarks of pregnancy-induced hypertension (PIH) diseases, which include gestational hypertension, preeclampsia (PE), or eclampsia. Converging in vitro, ex vivo, and clinical studies from our group strongly suggested the potential involvement of the new angiogenic factor EG-VEGF (endocrine gland-derived-VEGF) in the development of PIH. Here, we described the protocol that served to demonstrate that maintenance of EG-VEGF production over 11...
2018: Methods in Molecular Biology
Hongli Yang, Juan Reynaud, Howard Lockwood, Galen Williams, Christy Hardin, Luke Reyes, Stuart K Gardiner, Claude F Burgoyne
Accurately characterizing the 3D geometry of the optic nerve head neural and connective tissues has been the goal of a large and important body of scientific work. In the present report, we summarize our methods for the high-resolution, digital, 3D histomorphometric reconstruction of the optic nerve head tissues, including their visualization, parameterization, and quantification. In addition, we present our methods for between-eye comparisons of this anatomy, and their use to determine animal-specific and experiment-wide experimental glaucoma versus Control eye differences in the unilateral, monkey experimental glaucoma model...
2018: Methods in Molecular Biology
Clotilde Jumelle, Alina Hamri, Gregory Egaud, Cyril Mauclair, Stephanie Reynaud, Virginie Dumas, Sandrine Pereira, Thibaud Garcin, Philippe Gain, Gilles Thuret
Corneal lamellar cutting with a blade or femtosecond laser (FSL) is commonly used during refractive surgery and corneal grafts. Surface roughness of the cutting plane influences postoperative visual acuity but is difficult to assess reliably. For the first time, we compared chromatic confocal microscopy (CCM) with scanning electron microscopy, atomic force microscopy (AFM) and focus-variation microscopy (FVM) to characterize surfaces of variable roughness after FSL cutting. The small area allowed by AFM hinders conclusive roughness analysis, especially with irregular cuts...
November 1, 2017: Biomedical Optics Express
Emmanuelle Proust-Lemoine, Rachel Reynaud, Brigitte Delemer, Antoine Tabarin, Dinane Samara-Boustani
No abstract text is available yet for this article.
December 2017: Annales D'endocrinologie
Philippe Chanson, Laurence Guignat, Bernard Goichot, Olivier Chabre, Dinane Samara Boustani, Rachel Reynaud, Dominique Simon, Antoine Tabarin, Damien Gruson, Yves Reznik, Marie-Laure Raffin Sanson
A diagnosis of adrenal insufficiency should be suspected in the presence of a number of non-specific symptoms (fatigue, anorexia, weight loss, hypotension, hyponatremia and hyperkalemia amongst adrenal causes of insufficiency). The diagnosis should be considered in case of pituitary disease or a state of shock. Treatment should be commenced immediately without waiting for confirmation from biochemical tests, which rely on cortisol level at 8am (expected to be low) and on ACTH level (expected to be high in the case of primary adrenal insufficiency)...
December 2017: Annales D'endocrinologie
Eve Reynaud, Marie-Françoise Vecchierini, Barbara Heude, Marie-Aline Charles, Sabine Plancoulaine
This is the first systematic review of the literature on sleep and its relation to cognition and behaviour in preschool-aged children. In comparison with the literature focused on school-aged children, knowledge involving preschoolers is rather sparse. A total of 26 studies was included in this review, which revealed a high degree of heterogeneity regarding the type and means of measuring sleep variables and behavioural and cognitive variables, as well as the statistical methods employed. Amongst the 13 articles with the largest sample sizes (top 50% of the included studies, 12 different populations), 12 found that a higher quantity or quality of sleep was associated with better behavioural and/or cognitive outcomes...
November 22, 2017: Journal of Sleep Research
Emmanuelle Gilot-Fromont, Mathieu Garel, Philippe Gibert, Sébastien Lambert, Pierre Menaut, Brigitte Bonetti, Yvette Game, Gaël Reynaud, Kévin Foulché
Understanding the dynamics of host-pathogen interaction is key to the management of epidemics. A pestivirus belonging to the border disease virus group 4 emerged around 2001 in Pyrenean chamois (Rupicapra pyrenaica) in Spain and France. The virus had significant demographic impact in some populations, but it was less harmful and more endemic in other places. The determinants of these local variations are still unclear. Here, we documented empirical evidence of self-clearance of the virus in a chamois population in France...
November 17, 2017: Journal of Wildlife Diseases
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