Endocrine Abstracts

Background: In clinical practice there is considerable confusion as to whether pituitary imaging is indicated in patients presenting with a marginally elevated serum prolactin level (<1000 milliunits per litre) and no other discernible cause of hyperprolactinaemia.Objective: The aim of this study was to investigate the frequency of radiological abnormalities of the pituitary in patients presenting with marginal hyperprolactinaemia (<1000 milliunits...

Background: Long-acting depot somatostatin analogues injections are useful drugs in the medical treatment of acromegaly. No previous study has assessed the value of acute octreotide suppression test in predicting responses to depot injections.Objective: The aim of this study was to investigate the value of the acute octreotide suppression test (100 micrograms subcutaneously, GH measurements hourly for 8 hours) in predicting the long-term response to long...

Carcinoid tumours are neuroendocrine tumours that may arise as isolated non-familial cancers or in association with multiple endocrine neoplasia type 1 (MEN1), which is an autosomal dominant disorder characterised by the combined occurrence of tumours of the parathyroids, the anterior pituitary and the pancreatic islets. The molecular mechanisms underlying carcinoid tumourogenesis have not been fully defined and in order to further characterise these, we undertook 2 approaches...

Fifty patients (male:female 23:27) with a phaeochromocytoma or paraganglionoma have been seen within the Oxford hospitals since 1985. Further information has been located on 48. Patients had a median age of 42.6 years (range 19.4-74.6) and a median follow up of 13.9 months postoperatively (range 0.6-146.3). The adenoma was unilateral in 44 cases (88%, left 20, right 22) and bilateral in 4 cases (8% 2 Von Hippel-Lindau disease (VHL) 1 Neurofibromatosis type 1 (NF1) 1 Sporadic)....

BACKGROUND: Antiangiogenic effects have been demonstrated with currently available somatostatin analogues. The mechanism remains unclear, although some studies suggest inhibition of the pro-angiogenic tumour vascular endothelial growth factor (VEGF) production.OBJECTIVE: To determine whether pre-operative Lanreotide (LAN) in patients with acromegaly influences circulating VEGF.PATIENTS AND METHODS: Serum samples from six acromegal...

Quantification of the catecholamine metabolites, normetadrenaline, metadrenaline and the dopamine metabolite 3-methoxytyramine is widely used as a biochemical investigation for the presence of a phaeochromocytoma. As with any biochemical measurement it is essential that the results are compared against a reference range appropriate for the individual patient.In order to assess the suitability of published reference ranges for these analytes, observed re...

Autoimmune polyendocrinopathy type 1 (APS1) is an autosomal recessive disorder characterised by hypoparathyroidism, adrenocortical failure, and mucocutaneous candidiasis. The gene causing APS1 is the autoimmune regulator (AIRE-1) gene, which maps to 21q22.3 and consists of 14 exons. The AIRE-1 protein, comprising of 545 amino acids, contains two PHD zinc-finger motifs, a proline rich region and four LXXLL motifs, consistent with its role as a transcription factor. Over 25 diff...

Background: Thyroid eye disease (TED) is an autoimmune inflammatory disease that can be both disfiguring and potentially sight threatening. Suppression of inflammation in active disease can reduce the risk of visual loss and limit long-term sequelae of the disease. Current disease management involves suppression of inflammation using glucocorticoids. The aim of our study was to evaluate the efficacy of early disease intervention with targeted immunomodulatory therapy to alter ...

Introduction: Pharmacological targeting of skeletal muscle to enhance metabolism through signalling pathways independent of insulin could be effective in treating metabolic diseases such as obesity and type 2 diabetes. BI-9774 is an allosteric agonist which has been shown to have high potency in enhancing 5’ AMP-activated protein kinase (AMPK) activity. The purpose of these experiments was to establish the effects of BI-9774 on AMPK signalling and mitocho...

Introduction: Skeletal muscle (SkM) is a major site of carbohydrate and fatty acid (FA) utilisation, where efficient selection between these two substrates is paramount in maintaining metabolic homeostasis. The accumulation of FA in SkM has been suggested to contribute to metabolic diseases such as obesity and type 2 diabetes mellitus. Consequently, there is significant interest in SkM FA metabolism and importantly, how FAs contribute to the metabolic function...