نتایج جستجو برای: acth test
تعداد نتایج: 818815 فیلتر نتایج به سال:
We evaluated the usefulness and accuracy of diagnostic tests for adrenocorticotropic hormone (ACTH)- dependent Cushing's syndrome, based on our experience of 88 cases, including 73 cases with Cushing's disease, and 15 cases with ectopic ACTH syndrome (EAS). In our study, 0.5 mg of dexamethasone failed to suppress the morning cortisol secretion in 100% of cases with Cushing's disease and EAS. Pl...
cushing’s syndrome is a rare endocrine disease characterized by hypercortisolemia caused by excess acth secreted by the pituitary. distinguishing pituitary sources from the ectopic sources of acth is challenging because of the limited accuracy of noninvasive assays. the test that offers the highest sensitivity and specificity is bilateral inferior petrosal sinus sampling (bipss). in patients wi...
Abstract Monitoring the concentration of glucocorticoid metabolites (GCMs) in faecal samples is a non-invasive tool for physiological stress evaluation, particularly useful when studying wild species. However, both negative and positive stimuli (distress eustress, respectively) can lead to rise glucocorticoids. Thus, besides validating whether GCM faeces reflects endogenous adrenal activity, we...
The purpose of this study was to evaluate the variation in plasma adrenocorticotropic hormone (ACTH) concentration and dexamethasone suppression test (DST) results with season, age, and sex in healthy, pony mares (n=15) and pony stallions (n=14) living under semiferal conditions and horse mares (n=10) living at pasture. Plasma ACTH concentrations were measured in September 2002, and in January,...
OBJECTIVE After unilateral adrenalectomy (uADX) in patients with a unilateral aldosterone-producing adenoma (APA), the remaining contralateral adrenal gland is generally considered sufficient to support life. However, few studies have compared adrenal reserve function before and after uADX. Therefore, we closely evaluated adrenal cortisol secretory function before and after uADX in patients wit...
INTRODUCTION Adrenal dysfunction may represent critical illness-related corticosteroid insufficiency (CIRCI), as evidenced by a diminished cortisol response to exogenous adrenocorticotropic hormone (ACTH), but this concept and its clinical significance remain highly controversial. We studied the adrenal response to exogenous ACTH as a function of the endogenous cortisol-to-ACTH ratio, a measure...
OBJECTIVE The purpose of this study was to investigate the diagnostic power of the adrenocorticotropin (ACTH) stimulation test in patients with primary aldosteronism (PA) and those with aldosterone-producing adenoma (APA). DESIGN This study was based on a retrospective database analysis. SUBJECTS AND METHODS We assessed 158 hypertensive patients with a high plasma aldosterone-to-renin ratio...
BACKGROUND Standard protocols for adrenocorticotropic hormone (ACTH) stimulation testing (ACTHst) often involve intravenous (IV) injection of corticotropin. ACTH might be unintentionally injected into the perivascular (PV) space. OBJECTIVE To compare stimulation test results after IV and PV injections of ACTH. ANIMALS Twenty privately owned dogs were studied: 10 healthy and 10 with trilosta...
Pituitary gland implants from other than an identical twin cannot be expected to function in man, whether the source be man or animal, but may act as a temporary source of hormone because of their ACTH content. The gland also contains other hormones and may be better than ACTH because of the slow absorption of hormone. Favourable results have been reported by Edstrom (1950) and Edstrom and Thun...
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