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Patricia Reant, Alexandre Metras, Dominique Detaille, Annabel Reynaud, Philippe Diolez, Beatrice Jaspard-Vinassa, Raymond Roudaut, Alexandre Ouattara, Laurent Barandon, Pierre Dos Santos, Stephane Lafitte
BACKGROUND: Left ventricular (LV) afterload could be associated with reduced myocardial contractility. The aim of this study was to evaluate the relative impact of increased afterload on LV myocardial deformation indices in chronic aortic constriction, with regard to hypertrophy, myocardial fibrosis, and mitochondrial function, and to differentiate acute versus chronic afterload effect. METHODS: Young pigs underwent aortic banding (n = 11) or sham (n = 7) operations...
October 14, 2016: Journal of the American Society of Echocardiography
François Osiurak, Emanuelle Reynaud, Jordan Navarro, Mathieu Lesourd
No abstract text is available yet for this article.
2016: Frontiers in Psychology
Caroline Reynaud, Laura Ferreras, Paola Di Mauro, Casina Kan, Martine Croset, Edith Bonnelye, Floriane Pez, Clémence Thomas, Géraldine Aimont, Antoine E Karnoub, Marie Brevet, Philippe Clezardin
Lysyl oxidase (LOX) is a secreted copper-dependent amine oxidase whose primary function is to drive collagen crosslinking and extracellular matrix stiffness. LOX in colorectal cancer (CRC) synergizes with hypoxia-inducible factor-1 (HIF-1alpha to promote tumor progression. Here we investigated whether LOX/HIF1 endows CRC cells with full competence for aggressive colonization in bone. We show that a high LOX expression in primary tumors from CRC patients was associated with poor clinical outcome, irrespective of HIF-1...
October 14, 2016: Cancer Research
Valérie Boudreau, Quitterie Reynaud, Catherine Lehoux Dubois, Adèle Coriati, Katherine Desjardins, Isabelle Durieu, Rémi Rabasa-Lhoret
Nearly 50% of adult patients with cystic fibrosis (CF) have diabetes. The occurrence of CF-related diabetes (CFRD) is preceded and is associated with deterioration of lung function and nutritional status. Microvascular complications can occur, but the main cause of death is respiratory failure rather than cardiovascular causes as in type 1 or type 2 diabetes. Because other methods such as glycated hemoglobin (A1C) levels are less sensitive in patients with CF, the recommended screening test is the oral glucose tolerance test (OGTT) with a 75 g glucose dose...
October 2016: Canadian Journal of Diabetes
P Flood, L Alvarez, E G Reynaud
Three-dimensional (3D) tissue models are invaluable tools that can closely reflect the in vivo physiological environment. However, they are usually difficult to develop, have a low throughput and are often costly; limiting their utility to most laboratories. The recent availability of inexpensive additive manufacturing printers and open source 3D design software offers us the possibility to easily create affordable 3D cell culture platforms. To demonstrate this, we established a simple, inexpensive and robust method for producing arrays of free-floating epithelial micro-tissues...
October 11, 2016: Biofabrication
Alexandre Reynaud, Robert F Hess
Purpose: Amblyopic patients have a deficit in visual acuity and contrast sensitivity in their amblyopic eye as well as suppression of the amblyopic eye input under binocular viewing conditions. In this study we wanted to assess the origin of the amblyopic suppression by studying the contrast perception of the amblyopic eye at suprathreshold levels under binocular and monocular viewing. Methods: Using a suprathreshold contrast matching task in which the reference and target stimuli were presented to different eyes either simultaneously or successively, we measured interocular contrast matching in 10 controls and 11 amblyopes (mean age 35 ± 15; 5 strabismics; 3 anisometropes; 3 mixed)...
October 1, 2016: Investigative Ophthalmology & Visual Science
Frédérique Albarel, Jeanne Perrin, Margaux Jegaden, Florence Roucher-Boulez, Rachel Reynaud, Thierry Brue, Blandine Courbiere
Steroidogenic acute regulatory protein (StAR) mutations are the most frequent aetiologies of congenital lipoid adrenal hyperplasia (CLAH). Phenotypes may vary, and puberty may be absent in affected individuals. To date, only two pregnancies have been described in 46,XX CLAH patients with StAR mutations; these patients exhibited ovarian steroidogenesis along with spontaneous puberty and menarche and normal menses. The patient described here presented with CLAH caused by the homozygous (unreported, 1 bp) deletion c...
October 3, 2016: Human Reproduction
Marie Szymanowski, Maria Salomon Estebanez, Raja Padidela, Bing Han, Karolina Mosinska, Adam Stevens, Lena Damaj, Florence Pihan-Le Bars, Emilie Lascouts, Rachel Reynaud, Catherine Ferreira, Claire Bansept, Pascale de Lonlay, Cécile Saint-Martin, Mark J Dunne, Indraneel Banerjee, Jean-Baptiste Arnoux
CONTEXT: Congenital hyperinsulinism (CHI) is the commonest cause of persistent hypoglycemia in neonates and infants. In medically unresponsive CHI, subtotal pancreatectomy is performed to achieve euglycaemia with consequent diabetes in later life. Sirolimus, a mammalian target of rapamycin (mTOR) inhibitor has been reported to obviate the need for pancreatectomy, but experience is limited. OBJECTIVE: We have investigated the efficacy and adverse effect profile of mTOR inhibitors in the treatment of severe CHI...
October 3, 2016: Journal of Clinical Endocrinology and Metabolism
Sophie M Prud'homme, Arnaud Chaumot, Eva Cassar, Jean-Philippe David, Stéphane Reynaud
Hazard assessment of chemical contaminants often relies on short term or partial life-cycle ecotoxicological tests, while the impact of low dose throughout the entire life cycle of species across multiple generations has been neglected. This study aimed at identifying the individual and population-level consequences of chronic water contamination by environmental concentrations of three organic micropollutants, ibuprofen, bisphenol A and benzo[a]pyrene, on Aedes aegypti mosquito populations in experimental conditions...
September 22, 2016: Environmental Pollution
T Banti, A Carsin, B Chabrol, R Reynaud, A Fabre
: Infant food diversification has undergone a rapid succession of good practice recommendations in France, but there has been no assessment of pediatrician practices on food diversification. OBJECTIVE: To assess the practices of pediatricians in relation to current recommendations of the French Society of Pediatrics on infant food diversification. METHODS: This was an observational study conducted from 1 November 2014 to 31 March 2015. The study population consisted of 97 pediatricians in the Var department and 84 pediatric residents assigned to the University of Aix-Marseille in France...
October 2016: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
R Guérout, A Lambrecht, K A Milton, S Reynaud
We reply to the "Comment on 'Lifshitz-Matsubara sum formula for the Casimir pressure between magnetic metallic mirrors.' " We believe the comment misrepresents our papers, and fails to provide a plausible resolution to the conflict between theory and experiment.
August 2016: Physical Review. E
Cécile Picard, Guillaume Thouvenin, Caroline Kannengiesser, Jean-Christophe Dubus, Nadia Jeremiah, Frédéric Rieux-Laucat, Bruno Crestani, Alexandre Belot, Françoise Thivolet-Béjui, Véronique Secq, Christelle Ménard, Martine Reynaud-Gaubert, Philippe Reix
We report three cases of pulmonary disease suggesting fibrosis in two familial and one sporadic case. Pulmonary symptoms were associated with various clinical features of systemic inflammation and vasculitis involving the skin, and appeared at different ages. A strong interferon signature was found in all three cases. Disease was not responsive to corticosteroids, and lung transplantation was considered for all three subjects at an early age. One of them underwent double-lung transplantation, but she immediately experienced a primary graft dysfunction and died soon after...
September 2016: Chest
Carole Guedj, Elisabetta Monfardini, Amélie J Reynaud, Alessandro Farnè, Martine Meunier, Fadila Hadj-Bouziane
The locus coeruleus-norepinephrine (LC-NE) system is thought to act as a reset signal allowing brain network reorganization in response to salient information in the environment. However, no direct evidence of NE-dependent whole-brain reorganization has ever been described. We used resting-state functional magnetic resonance imaging in monkeys to investigate the impact of NE-reuptake inhibition on whole-brain connectivity patterns. We found that boosting NE transmission changes functional connectivity between and within resting-state networks...
September 6, 2016: Cerebral Cortex
Alexandre De Bruyn, Mireille Harimalala, Innocent Zinga, Batsirai M Mabvakure, Murielle Hoareau, Virginie Ravigné, Matthew Walters, Bernard Reynaud, Arvind Varsani, Gordon W Harkins, Darren P Martin, Jean-Michel Lett, Pierre Lefeuvre
BACKGROUND: Cassava mosaic disease (CMD) in Madagascar is caused by a complex of at least six African cassava mosaic geminivirus (CMG) species. This provides a rare opportunity for a comparative study of the evolutionary and epidemiological dynamics of distinct pathogenic crop-infecting viral species that coexist within the same environment. The genetic and spatial structure of CMG populations in Madagascar was studied and Bayesian phylogeographic modelling was applied to infer the origins of Madagascan CMG populations within the epidemiological context of related populations situated on mainland Africa and other south western Indian Ocean (SWIO) islands...
2016: BMC Evolutionary Biology
Brad Fortune, Juan Reynaud, Christy Hardin, Lin Wang, Ian A Sigal, Claude F Burgoyne
PURPOSE: We tested the hypothesis that experimental glaucoma (EG) results in greater thinning of the optic nerve head (ONH) neural rim tissue than the peripapillary retinal nerve fiber layer (RNFL) tissue. METHODS: Longitudinal spectral-domain optical coherence tomography (SDOCT) imaging of the ONH and peripapillary RNFL was performed every other week under manometric IOP control (10 mm Hg) in 51 nonhuman primates (NHP) during baseline and after induction of unilateral EG...
August 1, 2016: Investigative Ophthalmology & Visual Science
Aurélie Couesnon, Rómulo Aráoz, Bogdan I Iorga, Evelyne Benoit, Morgane Reynaud, Denis Servent, Jordi Molgó
The cyclic imine toxin 20-methyl spirolide G (20-meSPX-G), produced by the toxigenic dinoflagellate Alexandrium ostenfeldii/Alexandrium peruvianum, has been previously reported to contaminate shellfish in various European coastal locations, as revealed by mouse toxicity bioassay. The aim of the present study was to determine its toxicological profile and its molecular target selectivity. 20-meSPX-G blocked nerve-evoked isometric contractions in isolated mouse neuromuscular preparations, while it had no action on contractions elicited by direct electrical stimulation, and reduced reversibly nerve-evoked compound muscle action potential amplitudes in anesthetized mice...
2016: Toxins
J Vitte, T Romain, A Carsin, M Gouitaa, N Stremler-Le Bel, M Baravalle-Einaudi, I Cleach, M Reynaud-Gaubert, J-C Dubus, J-L Mège
Aspergillus fumigatus is the causative agent of allergic broncho-pulmonary aspergillosis. Prompt and accurate diagnosis may be difficult to achieve with current clinical and laboratory scores, which do not include immune responses to recombinant A. fumigatus allergens. We measured specific immunoglobulin E and G4 directed to recombinant A. fumigatus allergens in 55 cystic fibrosis patients without allergic broncho-pulmonary aspergillosis but sensitized to A. fumigatus and in nine patients with allergic broncho-pulmonary aspergillosis (two with cystic fibrosis and seven with asthma)...
November 2016: Allergy
Dal Young Kim, Josephine M Reynaud, Aliaksandra Rasalouskaya, Ivan Akhrymuk, James A Mobley, Ilya Frolov, Elena I Frolova
The positive-strand RNA viruses initiate their amplification in the cell from a single genome delivered by virion. This single RNA molecule needs to become involved in replication process before it is recognized and degraded by cellular machinery. In this study, we show that distantly related New World and Old World alphaviruses have independently evolved to utilize different cellular stress granule-related proteins for assembly of complexes, which recruit viral genomic RNA and facilitate formation of viral replication complexes (vRCs)...
August 2016: PLoS Pathogens
Sébastien Colson, José Côté, Stéphanie Gentile, Valérie Hamel, Cédric Sapuppo, Pilar Ramirez-Garcia, Rachel Reynaud, Marie-Claude Lagouanelle-Simeoni
PURPOSE: The purpose of this study was twofold: (1) to describe the content of recent diabetes education programs and their outcomes in terms of glycemic control, disease management, and psychosocial criteria for children and adolescents with type 1 diabetes and (2) to gauge the match between these programs and the recommendations of the International Society for Pediatric and Adolescent Diabetes (ISPAD). METHODS: The integrative review was carried out according to the Cochrane recommendations...
October 2016: Diabetes Educator
C Casper, L Caeymaex, O Dicky, M Akrich, A Reynaud, C Bouvard, A Evrard, P Kuhn
BACKGROUND: The experience of becoming the parent of a sick or premature newborn can be particularly distressing for parents. They often encounter challenges to the development of their parenting roles. Perception of the hospital stay has never been analyzed on a large scale. OBJECTIVE: To analyze parents' perception of their involvement in the care of their newborn. METHODS: An internet-based survey started in France in February 2014 on the basis of a validated questionnaire composed of 222 neonatal care-related items...
September 2016: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
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