Alternative titles and symbols : Cortisol 11-beta-ketoreductase deficiency; AME1;
Description : Apparent mineralocorticoid excess (AME) is an autosomal recessive form of low-renin
hypertension associated with low aldosterone, metabolic alkalosis, hypernatremia,
and hypokalemia. The disorder is due to a congenital defect in 11-beta-hydroxysteroid
dehydrogenase type II (HSD11B2) activity, resulting in decreased conversion of biologically
active cortisol to inactive cortisone; this defect allows cortisol to act as a ligand
for the mineralocorticoid receptor, resulting in sodium retention and volume expansion.
There is a favorable therapeutic response to spironolactone (review by Ferrari, 2010).;
Inheritance : Autosomal recessive;
Molecular basis : Caused by mutation in the 11-beta-hydroxysteroid dehydrogenase, type II gene (HSD11B2,
614232.0001);