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. 1993 Jul;11(1-6):281-6.
doi: 10.1007/BF00004576.

Androgen metabolism in the skin of the rainbow trout (Oncorhynchus mykiss)

M Latz  1 , R Reinboth
Affiliations

Androgen metabolism in the skin of the rainbow trout (Oncorhynchus mykiss)

M Latz et al. Fish Physiol Biochem. 1993 Jul.

Abstract

Pieces of skin of male and female rainbow trout (Oncorhynchus mykiss) were incubated with testosterone and 11-ketotestosterone as substrates. In immature fish the conversion rate was low. In non-spawning adult males 11-ketotestosterone was reduced to 5α-11KDHT (up to 5.2%). In the fish in spawning condition the 5α-reduction rate was only about 1 to 2%. In the same specimens incubated with testosterone a high 11β-hydroxylase activity (23.8-25% in the male and 13% in the female skin) was found. Similar sex specific differences were observed for the occurence of 5α-reduced metabolites (about 20% in the male and 13% in the female tissue).

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