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  • Title: Multiple plasma steroid responses to graded ACTH infusions in patients with primary aldosteronism.
    Author: Guthrie GP.
    Journal: J Lab Clin Med; 1981 Sep; 98(3):364-73. PubMed ID: 6267148.
    Abstract:
    We measured the simultaneous responses of eight plasma steroids to the infusion of alpha 1-24 ACTH at incremental rates of 12.5 to 200 mlU/30 min in seven patients with primary aldosteronism (five with adenomas, two with adrenal hyperplasia) and in 10 normal controls studied on regular sodium intakes and while supine. Patients with primary aldosteronism from adenomas had relatively higher concentrations (p less than 0.05) of aldosterone, 18 OH-B, corticosterone, and DOC than the two with hyperplasia and, save corticosterone, above the range of the normal controls. We found inconsistent differences in plasma progesterone, 17-hydroxyprogesterone, deoxycortisol, and cortisol. These findings suggest that the intermediate steps in aldosterone biosynthesis are hypersensitive to physiologic amounts of ACTH in patients with aldosterone-producing adenomas. Plasma levels of steroids distal to progesterone, i.e., DOC, corticosterone, 18 OH-B, and aldosterone, are relatively higher after small amounts of ACTH in patients with adenomas than in normal subjects or those with adrenal hyperplasia.
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