Endocrine Abstracts

GH deficiency (GHD) in adults is characterized by a tendency towards fat mass gain and may predispose to type 2 diabetes mellitus.GH replacement (GHR) is associated with impaired insulin sensitivity shortly after starting therapy, reflected by increased fasting glucose and insulin levels. Available evidence suggests that concerns regarding glucose intolerance in patients receiving long-term GHR have not been substantiated. However, several environmental and lifestyle-related f...

Nur77 is an orphan nuclear receptor included in the NR4A family. This protein has been studied as a transcriptional regulator of glucose metabolism in different tissues. We aimed to investigate the endogenous role of Nur77 on energy and metabolic homeostasis. For this purpose, we used male and female Nur77-deficient mice and their wild-type littermates. We challenged them to standard diet and high fat diet, and analyzed different parameters involved in energy balance (food int...

Generously supported by IPSEN)-->GH replacement (GHR) in adults has demonstrated to improve body composition, inflammatory cardiovascular biomarkers and quality of life. However, this benefit is uneven, and factors that stratify treatment response are required.According to current guidelines, low IGF-I levels in specific conditions provide strong evidence for GH deficiency (GHD). Nevertheless, normal levels do ...

Background: Exogenous hyperthyroidism is a rare cause of thyrotoxicosis. It is caused by ingestion of excessive amounts of thyroid hormone, which could be intentional or surreptitious (known as factitious thyrotoxicosis). One of the most exceptional cause is the intake of meat or sausage containing thyroid tissue, inadvertently mixed with traces of muscles and other tissues of the animal’s neck (hamburger thyrotoxicosis). The clinical symptoms are indistinguishable from o...

Thyroid hormones (TH) are required for normal postnatal growth development in mammals. The physiological importance of TH becomes evident under the conditions of congenital–neonatal hypothyroidism (CH). If not treated immediately, CH has a profound impact on physiology and can permanently imprint neurological and endocrine systems, which, in turn, led to mental retardation, growth arrest, and metabolic disturbances. A delayed growth development or long-lasting influence o...

The activity of hypothalamus–pituitary–thyroid (HPT) axis is essential for energy homeostasis. TRH expression in the PVN is rapidy stimulated by energy demanding situations as cold exposure or locomotion, but blunted by stress-induced increased corticosterone serum levels. In primary cultures of rat hypothalamic cells (RHC), PKA activators as forskolin (Fsk) increase TRH mRNA levels, effect reverted by coincubation with dexamethasone. Fsk-dex coincubation also impede...

Incidental thyroid carcinoma includes thyroid carcinomas detected after surgery in patients whose thyroid has been correctly studied with no data of malignancy. Lately, the widely spread use of image techniques and thorough search of thyroid nodule complains, have lead to a growing number of thyroid carcinomas. But still there are some of these incidentally discovered after thyroidectomy.We report 98 cases of thyroid carcinomas incidentally found from a ...

Objective: To determine the prevalence of polycystic ovary syndrome (PCOS) and hyperandrogenism and their relationships with metabolic syndrome (MS) parameters in female-to-male transsexuals (FMT).Design and methods: Seventy-seven FMT were assessed clinically and biochemically to hyperandrogenism, before the beginning of the treatment with testosterone. We also assessed cardiovascular risk factors and other parameters of MS.Results...

Background: Endothelial dysfunction may have deleterious effect cardiovascular pathology in diabetic patients.Atrial natriuretic peptide (ANP) exerts beneficial effects on the cardiovascular system in part by exerting antioxidant activity. Recently it was reported that ANP is able to exert an antihypertrophic effect in myocitos at least in part due to inhibition of NADPH oxidase and superoxido generation.It seems that hyperglucemia...

Current treatment for acromegaly includes dopamine agonists (DA), somatostatin receptor ligands (SRL) and GH receptor antagonists (GHRA). DA in monotherapy, is less than 10% effective achieving control of the disease, and its efficacy in addition to ongoing SRL is less studied, without obvious determining factors of response. We report 2 operated patients with incomplete response to SRL and to whom Cabergoline addition led to disease control.Case 1: A ma...