Aldosterone - Dictionary Definition and Overview

Aldosterone :  (noun)

1: a corticosteroid hormone that is secreted by the cortex of the adrenal gland; regulates salt (sodium and potassium) and water balance

Based on WordNet 2.0

Aldosterone :  Aldosterone: A hormone made by the outer portion (cortex) of the adrenal gland that regulates the balance of salt and water in the body. Pronounced AL·do·ste·rone.

Aldosterone is secreted in response to low salt levels. Aldosterone then activates the MR (for mineralocorticoid receptor) gene. (Aldosterone is classified as a mineralocorticoid hormone.) The product of the MR gene, in turn, stimulates the kidney to reabsorb and retain salt, thereby retaining water.

An MR gene mutation leads to salt retention and high blood pressure early in life which becomes much worse with pregnancy.



Based on WordNet (r) 2.0 (August 2003)
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