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Expression of 11 beta-OHSD along the nephron of mammals and humans
S Kenouch1, N Alfaidy, J P Bonvalet
1INSERM U246, UER Xavier Bichat, Paris, France.
Steroids
|February 1, 1994
Abstract:
The enzyme 11 beta-hydroxysteroid dehydrogenase (11 beta-OHSD) plays a major role in the protection of the mineralocorticoid receptor (MR). This cellular mechanism of aldosterone selectivity relies on the coexpression of MR and 11 beta-OHSD in the same cells. Localization of renal 11 beta-OHSD along the nephron is reviewed; comparison of data contained in different species is made; and original data is presented to show that the catalytic activity of the enzyme in tubules from human kidney is the highest in the mineralocorticoid-sensitive distal nephron.