Endocrine Abstracts

Bisphenol A (BPA) is a widely used chemical and belongs to the list of metabolism-disrupting chemicals. BPA is banned in several countries and replaced by others BPA-analogs. We investigate the effects of BPA and 6 BPA-analogs (BPS, BPAF, BPF, BPB and BADGE) on the response of the human melanocortin 4 receptor (MC4R), a receptor involved in food intake and weight control, to its natural ligands. We used HEK293 cells line transiently transfected with human MC4R to determine the...

Introduction: Epidemiological and In vivo experimental studies reveal reprotoxic effects of endocrine disruptors (phthalates (DBP, DEHP) and bisphenol A (BPA)). An inverse association was found between the concentration of these endocrine disruptors and the concentration of INSL3. INSL3, a relaxine peptide, is involved in reproductive function, via its cognate receptor, RXFP2. The aim of this study was to characterize the involvement of RXFP2 in the effects o...

Numerous epidemiological studies link exposure to Bisphenol A (BPA) to reproductive function anomalies. Our team recently showed that BPA inhibits the action of Follicle Stimulating Hormone (FSH) on its receptor (FSHR). Water decontamination is achieved by chloration, which leads to the formation of chlorinated derivatives of Bisphenol A (ClXBPA), that may be found in natural environments and biological liquids or organs. In the presence of bromine, the formation of...

Introduction: Pituitary adenomas, second most common brain tumors, are mostly well controlled after surgery. However, some pituitary tumors present an aggressive evolution and are resistant to standard management. Immunotherapy with inhibitors of T-cell checkpoints have shown durable efficacy in a variety of malignancies. Moreover, immunotherapy has been associated with treatment-related hypophysitis, suggesting that pituitary could be a target of these treatments. Recently, i...

Introduction: The syndrome of reduced sensitivity to thyroid hormone (SRSTH) due to mutations of thyroid hormone receptor β (TRB) consists of an inappropriate secretion of TSH with elevated levels of thyroid hormones. Cardiovascular manifestations are often the ones that affect patients. Our aim was to evaluate the cardiac and vascular characteristics of patients with SRSTH due to TRB mutations.Materials and methods: We analysed cl...

Metabolic diseases (type 2 diabetes (T2D) and obesity) prevalence is increasing in the world. This is partly related to a change in lifestyle with an increase of caloric intake and a decrease of physical activity. Environmental causes are also involved among them exposure to bisphenol A (BPA). The mode of action of the latter is unknown. Beyond a suggesting effect relayed by nuclear receptors, we propose that BPA can act by modulating the functionality of G protein-coupled rec...

IntroductionProgressive and radioiodine-refractory thyroid cancer has poor outcomes and limited therapeutic options (i.e tyrosine kinase inhibitors) due to the transient efficacy of treatment and toxic effects. Therefore, combinatorial treatment with new therapeutic approaches are needed. Many studies link G Protein-Coupled Receptors (GPCRs) to cancer. The aim of this study is to present the first specific atlas of GPCRs expression in progressive and ref...

Aims: To assess the relationship between sleep quality and fear of hypoglycemia, glycemic variability and other diabetes-related outcomes in type 1 diabetes.Methods: Our data were provided by the VARDIA Study, a multicentric observational cross-sectional study conducted between June and December 2015. Sleep characteristics were assessed by Pittsburgh Sleep Quality Index (PQ1I). Fear of hypoglycemia was measured with the Hypoglycemia Fear Survey version I...