In vivo and in vitro glucocorticoid sensitivity in obese people with cushingoid appearance

Obesity
Akheel A SyedJolanta U Weaver

Abstract

Clinical similarities between Cushing's syndrome and obesity/metabolic syndrome have led to speculation of a role for glucocorticoids (GCs) in the etiopathogenesis of obesity. People with idiopathic obesity have normal circulating cortisol concentrations. However, there may be considerable interindividual variation in GC sensitivity. The objective of this study was to determine whether enhanced GC sensitivity in the absence of GC excess was a characteristic of obese people with cushingoid features. We studied 12 obese subjects with cushingoid features in the absence of Cushing's syndrome and six slim control participants. Data recorded included BMI, waist-to-hip ratio, blood pressure, glucose and insulin response to 75 g oral glucose challenge, and low-dose (0.25 mg) overnight dexamethasone (DEX) suppression test (ODST-0.25 mg). To study GC-sensitivity in vitro, we performed dose-response studies of DEX-induced suppression of interleukin-6 (IL-6) secretion in skin fibroblast cultures. Seven obese subjects were normosensitive and five subjects hypersensitive to GCs in vitro. ODST-0.25 mg resulted in a median suppression of cortisol from baseline of 32% in normosensitive and 60% in hypersensitive obese subjects (P < 0.004). No ot...Continue Reading

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Jan 10, 2004·European Journal of Endocrinology·H VermeerM Jansen
Aug 4, 2005·Obesity Research·Akheel A Syed, Jolanta U Weaver
Aug 11, 2005·The Journal of Clinical Endocrinology and Metabolism·Rosangela Soares ChriguerMargaret de Castro
Oct 28, 2005·Biostatistics·Damla Sentürk

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Citations

Sep 7, 2012·Journal of Inflammation Research·Christopher BurnsidesJeanette I Webster Marketon

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