Document Detail

In vitro effect of a fish gonadotropin on aromatase and 17 beta-hydroxysteroid dehydrogenase activities in the ovary of the rainbow trout (Salmo gairdneri Rich.).
MedLine Citation:
PMID:  6961480     Owner:  NLM     Status:  MEDLINE    
Aromatase activity has been studied in the rainbow trout ovary in a perifusion system. During early vitellogenesis, as in other stages of the annual cycle, the ovaries were capable of aromatizing androstenedione and testosterone. Aromatase activity increased from the postovulatory stages to exogenous vitellogenesis. When highly purified salmon glycoprotein maturational gonadotropin was added to the medium (50 ng/ml), the androstenedione/testosterone ratio was reduced by half. This indicates a stimulation of 17 beta-hydroxysteroid dehydrogenase activity favourizing the formation of testosterone. At a concentration of 50, 150 or 300 ng/ml, the gonadotropin inhibited between 13 and 38 p. 100 of the aromatase enzymatic activity.
O Sire; J Dépêche
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Reproduction, nutrition, development     Volume:  21     ISSN:  0181-1916     ISO Abbreviation:  Reprod Nutr Dev     Publication Date:  1981  
Date Detail:
Created Date:  1983-03-11     Completed Date:  1983-03-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8005903     Medline TA:  Reprod Nutr Dev     Country:  FRANCE    
Other Details:
Languages:  eng     Pagination:  715-26     Citation Subset:  IM    
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MeSH Terms
17-Hydroxysteroid Dehydrogenases / metabolism*
Androstenedione / analysis
Aromatase / metabolism*
Gonadotropins / pharmacology*
Ovary / drug effects,  enzymology*
Oxidoreductases / metabolism*
Testosterone / analysis
Reg. No./Substance:
0/Gonadotropins; 58-22-0/Testosterone; 63-05-8/Androstenedione; EC 1.-/Oxidoreductases; EC 1.1.-/17-Hydroxysteroid Dehydrogenases; EC

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