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Research Article Free access | 10.1172/JCI112405

Stimulation of gonadal steroid synthesis by chronic excess of adrenocorticotropin in patients with adrenocortical insufficiency.

H Vierhapper, P Nowotny, and W Waldhäusl

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Published April 1, 1986 - More info

Published in Volume 77, Issue 4 on April 1, 1986
J Clin Invest. 1986;77(4):1063–1070. https://doi.org/10.1172/JCI112405.
© 1986 The American Society for Clinical Investigation
Published April 1, 1986 - Version history
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Abstract

Analysis of 24-h urinary steroid excretion was performed by capillary gas chromatography in six patients (five men, one woman) with adrenocortical insufficiency. Ten healthy subjects (five men, five women) served as controls. A complete absence of all 21-hydroxylated steroid metabolites was seen in patients with adrenocortical insufficiency, whereas the excretion of several steroids lacking hydroxylation in the 21-position (pregnenolone, pregnenetriol, and 11-ketoandrosterone) was markedly increased. In addition, the presence of 11 beta-hydroxyandrosterone was confirmed by mass-spectrometry in the urine of three patients. This pattern of steroid excretion was unchanged in patients with adrenocortical insufficiency, both after stimulation by 1-24 adrenocorticotropin (ACTH) and after short-term (3-d) suppression with dexamethasone. We conclude that patients with adrenocortical insufficiency present a pattern of steroid excretion characterized by the absence of 21-hydroxylated metabolites. In the absence of functional adrenocortical tissue, long-term pathologically elevated concentrations of ACTH apparently stimulate early steps of steroid synthesis, most likely in the gonads. In addition, the presence of 11-hydroxylated steroid metabolites (11-ketoandrosterone, 11 beta-hydroxyandrosterone) in the urine of patients with adrenocortical insufficiency demonstrates that chronic ACTH excess in this disorder may induce some activity of 11 beta-hydroxylase, an enzyme not found in the gonads under physiological conditions.

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