Endocrine Abstracts

The anorexigenic leptin and orexigenic ghrelin, are peripheral signals that control appetite via the hypothalamic neuropeptide Y (NPY) system. Ghrelin exists in an inactive (des-acyl) and active (octanoylated) form which acts via the GHS-R1a. Whilst a great deal is understood about central interaction of these peptides their peripheral pathways remain uncertain. Adipose tissue (AT) produces several neuropeptides. Due to the importance of AT in the control of energy homeostasis...

South Asian people have a lower threshold for obesity related complications than Caucasians and as a result have a higher risk of type 2 diabetes (T2DM) and cardiovascular disease (CVD) for a given BMI. Premature biological ageing, assessed by reduction in telomere length (TL), may be mediated by factors resulting from altered metabolic profiles associated with obesity and insulin resistance. We therefore hypothesised that IR is associated with altered metabolic profiles and t...

BACKGROUD: Parathyroid hormone (PTH) is normally secreted in a circadian rhythm and modulates bone turnover through the differential stimulation of receptor activator for nuclear factor kappa-B ligand (RANKL) and suppression of osteoprotegerin (OPG), both of which are fundamental factors in regulating bone turnover. We have studied the relationship between PTH and OPG over a 24-hour period.METHODS: Hourly peripheral venous blood samples were obtained fro...

Background: Phaeochromocytomas & paragangliomas (PPGL) are rare neuroendocrine tumours presenting with symptoms of sympathetic overactivity, hypertension, or as adrenal incidentalomas.Study and results: A 24-year retrospective review of a U.K. single-centre PPGL service (2009 -2023) identified 61 cases (53 phaeochromocytomas/8 paragangliomas). Among these, 35 (57%) were females. Mean age of diagnosis was 56.35±16....

Delayed hyponatraemia(DH) is a well-known complication following trans-sphenoidal pituitary surgery (TSS), varying in incidence from 9–36% and occurs between post-operative days(POD) 4 to 14. Various studies have demonstrated that post-operative fluid restriction after TSS reduces the incidence of DH.Objective: to assess whether a fluid restriction protocol from POD5 to POD14 following TSS reduces the incidence of post-operative DH ...

Background: G3NETs demonstrate variable clinical behavior (Ki-67>20-100%). Treatment extrapolated from grade 1/2 (G1/2) NETs and neuroendocrine carcinomas depending on clinicopathologic features. Therapy for treatment-emergent G3NETs remains especially ill-defined.Methods: Retrospective chart review of patients with de novo G3NETs or progressing from low-to-high grade (L-H) (G1/2 at diagnosis and G3 >=3 months later). Treatment patterns compared ...

Background: Peptide Receptor Radionuclide Therapy (PRRT) is effective for gastroenteropancreatic (GEP) neuroendocrine tumors (NETs) and received FDA approval after demonstrating improved progression-free-survival (PFS) in advanced midgut NETs. We investigated a two-decade experience with PRRT, hypothesizing that PRRT confers PFS and overall-survival (OS) advantages in patients who progress after surgery.Methods: A single-institutional NET database was re...

Niels E Skakkebæk, University Department of Growth and Reproduction, Rigshospitalet, Copenhagen, Denmark AbstractNeils Skakkebaek graduated from Medical School, Copenhagen (1964) and received basic medical training at the St. Joseph's Hospital, Copenhagen and was also trained in pediatrics and medicine at various hospitals in Copenhagen and was awarded a doctorate in Medical Sciences from the University of Copenha...

Background & Objective: Pseudohypoparathyroidism (PHP), a heterogeneous condition, classically causes parathyroid hormone (PTH) resistance. PHP1a is caused by heterozygous inactivating mutations on the maternally derived GNAS allele. PHP1b results from methylation defects at the GNAS imprinted gene cluster, which are either sporadic, or familial, normally associated with maternally inherited intragenic STX16 deletions. We investigated the presentation, phenotype, ...

Background: Central diabetes insipidus (cDI), a rare neuroendocrine condition affecting 1 in 25.000, is characterized by deficiency of arginine vasopressin. Data about treatment-related side effects, psychological co-morbidities, and incidence of wrong management due to confusion with diabetes mellitus are scarce and limited to small studies or case series. Furthermore, increasing interest has arisen on a potential need for re-naming the condition.<p class="abstex...