Endocrine Abstracts

Anaerobic threshold (AT) is defined as the point of maximum intensity at which lactate is being produced but does not accumulate in blood during exercise. Training at this intensity is common in athletes. Lactate is currently regard as indicator of effort intensity. It is usually quantified by reflectometry of capillary blood. This procedure although not very invasive, may be annoying during repeated measurements. Saliva is proposed as an alternative sample.<p class="abste...

The factors triggering pancreatic neuroendocrine tumor (PanNET) progression are largely unknown. Here we investigated the role and mechanisms of the sumoylation enhancing protein RSUME in PanNET tumorigenesis. Immunohistochemical studies showed that RSUME is strongly expressed in normal human pancreas, in particular in β-cells. RSUME expression is reduced in insulinomas and is nearly absent in other types of PanNETs suggesting a role in PanNET tumorigenesis. In human panc...

Maternal food restriction during late pregnancy and lactation, increases the risk of glucose intolerance and metabolic diseases such as diabetes & obesity in rats. Liraglutide is a GLP-1 receptor agonists administered for treating DM2. The aim of this study was to elucidate if liraglutide given to pregnant rats may prevent the deleterious effects of malnourishment in male pups analyzed at 21 days of age.Twenty eight Sprague-Dawley pregnant rats were ...

Background: Hypospadias in boys may be associated with a lack of androgen exposure during the masculinisation programming window. As testosterone has effects on the vasculature, we assessed whether boys with hypospadias show evidence of vascular dysfunction.Methods: Excess foreskin tissue was obtained from boys undergoing hypospadias repair (cases) or circumcision (controls) and small arteries dissected. Vascular contractility was assessed by wire myogra...

Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive and fatal lung disease characterized by excessive matrix deposition that disrupts the normal alveolar architecture and lung physiology. Glucagon-like peptide 1 (GLP1) is a gut-produced hormone with insulinotropic effects. GLP1 receptor is expressed in the lung where it is implicated in the synthesis of the protein (SPs) and lipid fractions of the surfactant. We have previously shown that the GLP1 receptor agonist, l...

Introduction: Cushing’s disease (CD) is responsible for 80% of endogenous Cushing’s syndrome (CS). However, distinguishing the cause of ACTH-dependent CS – CD vs ectopic CS – can be extremely difficult. Bilateral inferior petrosal sinus sampling (IPSS) has the highest diagnostic accuracy in this evaluation.Objectives: The aims of this study were to determine the accuracy of bilateral IPSS in the differential diagnosis of ACTH-dependen...

Despite the importance of the Ret receptor, it is clear that other signal transduction pathways, tyrosine kinase receptors, and tumours suppressor genes are involved in MTC tumorigenesis and progression. Differences in the clinical behaviour of patients harbouring the same Ret mutations may be related to these other genes. Alterations of genes involved in the G1 phase of the cell cycle, including the cyclins, CDKs and CDK inhibitors, are common events in neoplastic development...

Wearable physical activity monitors are growing in popularity as they provide the opportunity for self-monitoring, real time data collection and data sharing for cardiovascular and sports medicine. However, there are discussions about the accuracy of their energy expenditure estimate. This study examined and compared basal metabolic rate through indirect calorimetry and through wrist-worn devices and bioimpedance. The group consisted of 30 healthy male individuals, professiona...

Background: Calculation of a urinary steroid metabolite ratio (uSMR) may be a useful method of improving diagnostic yield when investigating disorders of steroid hormone synthesis.Objective & HypothesisTo investigate the range of uSMR in children with suspected disorders of steroid hormone synthesis.Population / MethodsTen ratios were calculated on steroid metabolite data analysed b...

Most kindreds of familial isolated pituitary adenomas (FIPA) with mutated AIP develop somatotropinomas, characterized by an aggressive clinical phenotype including early age at diagnosis, large tumours and frequent invasiveness. In non-family cases, the prevalence of AIP mutations in pituitary adenomas is lower than 10%. There is no information of AIP prevalence in isolated somatotropinomas characterized by poor response to conventional treatment.Aim: To...