Endocrine Abstracts

Kisspeptin is the peptide product of the KiSS-1 gene and endogenous agonist for the GPR54 receptor. The kisspeptin/GPR54 system has recently been suggested as a key regulator of the reproductive system. GPR54 deficient mice have abnormal sexual development and low circulating gonadotrophins and in humans, GPR54 mutations have been shown to cause hypogonadotrophic hypogonadism. Thus, GPR54 appears to be essential for normal gonadotrophin secretion and the regulation of puberty....

In addition to obesity, models of abnormal hypothalamic melanocortin signalling display increased linear growth, although the mechanism remains unclear. We have studied the somatotrophic axis in the obese agouti (Ay/a) mouse (male, 12-14 weeks), as a model of an altered melanocortin system. Somatotrophic hormones were measured by radioimmunoassay and hypothalamic neuropeptide expression studied by in situhybridisation.Obese A<...

Background: The 2013 Scottish Diabetes Survey demonstrated that only 22% of individuals with type 1 diabetes have optimal glycaemic control, defined as a HbA1c <58 mmol/mol. The 2014 Diabetes Improvement Plan in Scotland prioritised, ‘improving the care and outcomes of all people living with type 1 diabetes’. Scotland’s Diabetes Education Advisory Group has now been established. Accordingly, the Fife Insulin and Food Education for Diabetes (FIFE Diabetes) st...

We report the first case of familial adrenocortical carcinoma (ACC) in association with hereditary non-polyposis colorectal cancer (HNPCC) in a family with a MSH2 germline mutation.HNPCC, an autosomal dominant disorder caused by mutations in one of the DNA mismatch repair (MMR) genes, is the commonest cause of hereditary colon carcinoma, and is associated with an increased risk of certain non-colonic cancers (e.g. endometrial, ovarian, urin...

Alarin is the most recently discovered member of the galanin peptide family, and is encoded by a splice variant of galanin-like peptide (GALP) mRNA. Galanin and GALP are known to regulate energy homeostasis and reproduction. Galanin is thought to mediate its effects via the three-galanin receptors. GALP also binds to these known galanin receptors, but evidence suggests that it may also act via an as yet unknown GALP specific receptor. The role of alarin in energy homeostasis a...

Aim: To assess whether adults in Scotland currently receiving growth hormone (GH) meet the NICE criteria for starting and continuing GH replacement.Methods: We surveyed all endocrinologists in Scotland and identified the main centres using GH replacement. A cross-sectional case note review was carried out of all patients commenced on GH.Results: About 208 patients (51% women; 24% professionals, 90% Caucasian) were identified, 69 of...

Background: Kisspeptin is a peptide product of the KiSS-1 gene and a key regulator of the hypothalamo-pituitary-gonadal axis. Pregnancy is associated with raised plasma kisspeptin concentrations. However, there is significant variation in the plasma kisspeptin levels quoted in previous studies. We investigated the effects of pre-analytical factors including processing time and anticoagulant type on plasma kisspeptin-immunoreactivity (IR) measurement.Meth...

Background: National Institute for Clinical Excellence (NICE) guidelines for the use of Growth Hormone (GH) replacement in adults with GH deficiency (GHD) were published in 2003, and subsequently ratified for use in Scotland.Aim: To identify all adults in Scotland currently receiving GH and to assess whether they meet the NICE criteria for starting and continuing GH replacement.Methods: All endocrinologists in Scotland were surveye...

Kisspeptin-54 is a neuropeptide encoded by the Kiss-1 gene with an important role in the regulation of reproduction and puberty. Acute peripheral or intra-hypothalamic administration of kisspeptin-54 potently stimulates the hypothalamo-pituitary-gonadal (HPG) axis via hypothalamic gonadotrophin releasing hormone (GnRH) neurons. However, the effects of chronic continuous kisspeptin administration are poorly characterised. Our studies investigated the effects of chronic, continu...

The kisspeptins are KiSS-1 gene-derived peptides which signal through the G protein coupled receptor 54 (GPR54), and have recently been shown to be critical regulators of reproduction. Acute intracerebroventricular (ICV) or peripheral administration of kisspeptin to rodents and primates, and peripheral administration to humans, stimulates the hypothalamic-pituitary gonadal (HPG) axis. This effect is thought to be mediated via the hypothalamic gonadotrophin-releasing hormone (G...