Endocrine Abstracts

Introduction and objectives: The inhalation of tobacco smoke leads to an acute increase in cortisol, ACTH and GH concentration, both in chronic smokers as in non-smokers. However, most studies have failed to demonstrate differences between both groups in basal levels of these hormones in plasma or urine. Additionally, cholinergic pathways have been shown to play an inhibitory role in ACTH secretion in non-smokers. UFC and circulating levels of cortisol, ACTH and GH were evalua...

Introductions: Alterations of the somatotrophic and hypothalamic–pituitary–adrenal (HPA) axes occur frequently in patients with poorly controlled DM-1. These disorders could be related to abnormalities in the cholinergic tone regulating both hormonal axes.Subjects and Methods: UFC (urinary free cortisol) on 24 h urine samples and the effects of placebo and pyridostigmine on ACTH, cortisol, GH and glucose circulating levels were studied in 16 yo...

Introduction and Objectives: In patients with poorly controlled DM-1, the frequently observed alterations of somatotrophic axis seem to be related to abnormalities in the hypothalamic cholinergic tone regulating this axis. The effects of cholinergic stimulation on GH responses to GHRH were evaluated in patients with poorly controlled DM-1 and the relationship of these responses to metabolic control and kidney function tests.Subjects and Methods: Microalb...

Background: There is a clear relationship between obesity and carbohydrate metabolism alterations (CMA), such as impaired glucose tolerance (IGT) and T2D. OGTT is used for the diagnosis of those alterations, but is not performed in case of normal fasting glucose values (NFG). Moreover, BMI underestimates the diagnosis of obesity and body composition alteration can be crucial to the development of abnormal carbohydrate metabolism. This study aimed to examine the discriminating ...

Obstructive sleep apnoea (OSA) is very common in severe obese patients and has been related to insulin resistance (IR) and hyperleptinemia, and these findings may have effects on food behavior and obesity complications. In order to explore this relationship and the role of sex we have studied 531 patients with morbid obesity (BMI 42.8+6.5 kg/m2). A full polysomnographic study and glucose, insulin and leptin measurements as well as air displacement plethysmography we...

Morbid obesity (MO) is often complicated by obstructive sleep apnoea (OSA), which in some cases is evaluated by pulsioximetry. This cross-sectional study was designed to investigate the prevalence of discordance between desaturation index (DI) and apnoea–hypopnoea index (AHI) and its effects on insulin resistance and secretion in MO patients candidate to bariatric surgery (n=496) in whom a full polysomnographic study was carried out. We identified 163 (33%) out o...

Aim: Non-alcoholic fatty liver disease (NAFLD) and type 2 Diabetes (T2D) are common conditions that frequently co-exist. Studies have shown an increase likelihood of micro and macrovascular complications in this population, as well, as an increased risk of developing more severe forms of liver disease. The aim of this study was to identify diabetic complications in patients with both diseases and search for an association with liver stiffness assessed by Liver Elastography (LE...

Objectives and methods: The mechanism that explains the different weight response to various treatments in obese type 2 diabetes (DM2) patients, compared to those without diabetes, is still unknown. In order to establish the weight response to Roux-en-Y Gastric Bypass (RYGB), 268 patients with morbid obesity (IMC 45.4±0.4 kg/m2) were classified by OGTT as having normal glucose tolerance (Grupo A. n=107), prediabetes (Grupo B. n=96) an...

Introduction: Endogenous Cushing’s syndrome (CS) is a rare, infradiagnosed and severe disease that carries high morbidity and mortality. Delays in treatment initiation reduce reversibility of symptoms and increase mortality rate. Current gold standard for screening, 24 h urinary free cortisol, has a low reproducibility and specificity, and sampling is complicated. Midnight salivary cortisol (MSVC) determination is considered an easy and cheap test. We intend to assess its...