" /> Apparent mineralocorticoid excess - CISMeF





Preferred Label : Apparent mineralocorticoid excess;

Symbol : AME;

CISMeF acronym : AME; AME1;

Type : Phenotype, molecular basis known;

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);

Laboratory abnormalities : Decreased serum aldosterone; Low plasma renin activity; Hypokalemia; Increased urinary cortisol/cortisone ratio;

Prefixed ID : #218030;

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03/05/2025


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