HSD11B1 (Corticosteroid 11-beta-dehydrogenase isozyme 1) is also named as HSD11, HSD11L,11-DH and 11-beta-HSD1.It is a microsomal enzyme, which acts mainly as a NADP (H)- dependent reductase converting inactive cortisone (E) to active cortisol (F), thus regulating intracellular F access to glucocorticoid receptor. This enzyme is widely expressed not only in liver and adipose tissue, but also in adrenal, ovary and decidua.Western blot analysis in human liver, using a specific11-beta-HSD1 antibody, showed two bands at approximately 34 and 68 kDa confrming the dimeric nature of 11-beta-HSD1 in liver and In omental adipose tissue, an additional band of 50 kDa was strongly expressed.