Endocrine Abstracts

Bone loss in anorexia nervosa and following bariatric surgery is associated with an elevated circulating concentration of the gastrointestinal anorexigenic hormone peptide YY (PYY), which acts principally via the Y1R and Y2R receptors. Selective deletion of Y1R in osteoblasts or Y2R in the hypothalamus results in high bone mass, but deletion of PYY has resulted in conflicting skeletal phenotypes leading to uncertainty regarding its role in the regulation of bone mass. We hypot...

Primary Aldosteronism (PA) is the most frequent cause of secondary hypertension and patients display an increased prevalence of cardiovascular events compared to essential hypertensives. To date, three familial forms of PA have been described and termed, familial hyperaldosteronism types I, II and III (FH-I to -III). The aim of this study was to investigate the prevalence and clinical characteristics of the three forms of FH in a large population of PA patients. Three hundred ...

Background: Thyroid disease is associated with BMI with hyperthyroidism causing weight loss and hypothyroidism leading to weight gain. However, the relation of body weight distribution to thyroid function in euthyroid individuals is unclear. This study assessed body composition in euthyroid women.Methods: Euthyroid women (n=1072) from the Osteoporosis and Ultrasound Study (OPUS), a population based cohort study recruited participants from 5 Europe...

The hypothalamo-pituitary–thyroid (HPT) axis maintains controlled systemic levels of thyroid hormone (TH). This is achieved through negative feedback via the hypothalamic arcuate and paraventricular nuclei. The effects of thyroid hormone in other hypothalamic nuclei are yet to be elucidated. Administration of triiodothyronine (T3, thyroid hormone) into the hypothalamic ventromedial nucleus (VMN) increases food intake in rats. Thyroid hormone activation and inac...

Small cell lung cancer (SCLC) is highly aggressive with a particularly poor prognosis. This is due to tumours quickly metastasising and developing chemoresistance. SCLC tumours possess neuroendocrine properties in that they secrete prohormones such as pro-opiomelanocortin (POMC) and pro-gastrin releasing peptide (pro-GRP). These can be detected in the circulation and therefore have potential as biomarkers for prognosis and relapse. The aims of this study are; i) develop a mode...

Background: Obese young people are likely to suffer significant morbidity in adult life. Successful intervention during adolescence may have far-reaching benefits. Evidence is emerging that patient-responsive clinical services may deliver improved outcomes.Aims: To assess the perceptions of obese young people about weight and weight-management services.Method: Annonymised, postal questionnaire survey of 116 obese young people (9&#1...

OPUS is a population-based prospective cohort study of post-menopausal women from five European cities. We investigated whether TSH, fT4 and fT3 are associated with fracture risk, bone mineral density (BMD) at hip and spine, bone formation (osteocalcin, procollagen type 1 N-terminal propeptide), bone resorption (N- and C-telopeptides of type 1 collagen, NTX, CTX), pulse rate, grip strength and balance. Vertebral fractures were determined at baseline and 6 years follow-up. Usin...

(This poster is based on OC33)...

Thyroid hormone (T3) is an important regulator of skeletal development and bone turnover. Thyrotoxicosis is associated with accelerated growth, advanced bone age and osteoporosis. T3-action in bone is mediated mainly by T3-receptors (TRs). TRβPV mice harbour a dominant-negative mutation in the TRβ gene that impairs negative feedback control of the hypothalamic-pituitary-thyroid axis resulting in elevated thyroid hormone and TSH concentrations. TRβ<sup...

We report a case of a 76 year old gentleman referred to the endocrine department by his general practitioner (GP) with a few years history of severe lethargy, low mood, and dizziness on changing posture. He is known to have hypothyroidism, hypertension, hypercholesterolaemia, benign prostatic hypertrophy, and benign colonic polyps. His medications included amlodipine, finasteride, lansoprazole, atorvastatin and levothyroxine. Examination of all systems were unremarkable, in pa...