Journal of Clinical Endocrinology & Metabolism, Vol 48, 228-234, Copyright © 1979 by Endocrine Society

ARTICLES

Pseudohypoaldosteronism: multiple target organ unresponsiveness to mineralocorticoid hormones

SE Oberfield, LS Levine, RM Carey, R Bejar and MI New

The first report of a 7-month-old male with pseudohypoaldosteronism in which unresponsiveness to mineralocorticoids has been demonstrated in the kidney, colon, and sweat and salivary glands is presented here. This is documented by urinary, salivary, and sweat sodium wasting in the presence of elevated urinary aldosterone excretion, plasma aldosterone concentration, and PRA. There was no mineralocorticoid response in the kidney or salivary or sweat glands to the administration of high doses of 9 alpha-flurocortisol. Furthermore, in this patient, the colonic mucosal cells failed to respond to exogenous aldosterone administration. Repeat evaluation at 25 months of age showed persistence of the sodium wasting and multiple target organ insensitivity to administered mineralocorticoid. Since this patient has defective mineralocorticoid response in the major sodium-conserving organs, the only therapy possible was administration of sodium to compensate for total sodium loss.

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