NDLI: Effect of cortisol on the metabolism of 17-hydroxyprogesterone by Arctic charr and rainbow trout embryos

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Fish Physiology and Biochemistry : Volume 16, Issue 2, March 1997

Fish Physiology and Biochemistry : Volume 16, Issue 1, January 1997

Effect of cortisol on the metabolism of 17-hydroxyprogesterone by Arctic charr and rainbow trout embryos

Content Provider	Springer Nature Link
Author	Khan, M.N. Reddy, P.K. Renaud, R.L. Leatherland, J.F.
Copyright Year	1997
Abstract	The effect of cortisol on the in vitro metabolism of [3H]17-hydroxyprogesterone ([3H]17OHP) was studied during embryonic development of Arctic charr (Salvelinus alpinus) and rainbow trout (Oncorhynchus mykiss). In the absence of cortisol, rainbow trout embryos metabolized [3H]17OHP largely to androstenedione (A4) and androstenetrione (11-KA) with a minor conversion to 17,20ß-dihydroxy-4-pregnen-3-one (17,20P). In the presence of cortisol, this biosynthesis was inhibited. On the other hand, cortisol had no apparent inhibitory effect on the nature of metabolism of [3H]17OHP by Arctic charr embryos. In these embryos [3H]17OHP was metabolized mainly to 17,20P with a minor conversion to A4 and without the formation of 11-KA that was seen in rainbow trout.When incubated in the presence of [3H]cortisol both Arctic charr and rainbow trout embryos produced 11ß-hydroxyandrostenedione (11ß-OHA) as the major metabolite, with a minor conversion to an unknown steroid. The catabolism of the cortisol by salmonid embryos may reflect the ability of the embryo to inactivate or detoxify cortisol to protect itself from the adverse effects of this biologically potent steroid hormone The study indicates the existence of species-specific differences in the nature of metabolism of [3H]17OHP and the inhibitory effect of cortisol on this metabolism.
Starting Page	197
Ending Page	209
Page Count	13
File Format	PDF
ISSN	09201742
Journal	Fish Physiology and Biochemistry
Volume Number	16
Issue Number	3
e-ISSN	15735168
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1997-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Animal Biochemistry Hydrobiology Zoology Animal Anatomy / Morphology / Histology Animal Physiology
Content Type	Text
Resource Type	Article
Subject	Physiology Medicine Biochemistry Aquatic Science

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