Endocrine Abstracts

Introduction: Dexamethasone induced negative feedback on CRH, ACTH and cortisol secretion is one of the key principles in the diagnostic workup of hypercortisolism. Cortisol secretion has been studied extensively, but changes of other steroids remained apart. Our aim was to establish steroid profile changes in 1 mg dexamethasone test.Methods: The Steroid profile consisting of 103 steroids and their metabolites from the serum of 9 male and 8 healthy femal...

Introduction: Gas chromatography tandem mass spectrometry (GC-MS/MS) quantitatively detects many steroids at one time in a single serum sample. Cushing’s syndrome (CS) caused by adrenal adenoma is often associated with decreased DHEAS, whereas low levels of aldosterone in ACTH dependent CS and also low levels of 18-oxocortisol were observed in ectopic CS. We aimed to evaluate steroid differences in various types of CS.Methods: In serum from patients...

Diagnostic tests of the hypothalamic–pituitary–adrenal axis (HPA axis), measuring of free cortisol and use of other adrenal steroids are the subject of debate.We investigated 15 healthy men with mean/median age 27.4/26 (±4.8) years, and mean/median BMI 25.38/24.82 (±3.2) kg/m2. All subjects underwent four dynamic tests of the HPA axis, specifically 1, 10, and 250 μg synacthen tests and an insulin tolerance test (ITT). ...