gamma-Glutamyl transpeptidase as a possible marker of Sertoli cells in fish testes for studies of xenoestrogens. |
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| Authors: | T Christiansen K Kinnberg P Bjerregaard B Korsgaard |
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| Institution: | Institute of Biology, University of Southern Denmark, Odense University, Campusvej 55, DK-5230 Odense, Denmark. tinac@biology.ou.dk |
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| Abstract: | Estrogenic chemicals are known to have marked effects on the reproductive system of male fish. Finding useful markers of reproductive effects are therefore of great importance and interest. gamma-Glutamyl transpeptidase (gamma-GTP) is a possible marker of Sertoli cells in testes of fish. In the present study we have examined the relationship between the activity of gamma-GTP and the histological structure of the Sertoli cells in testes of five fish species (guppy, Poecilia reticulata; platyfish, Xiphophorus maculatus; eelpout, Zoarces viviparus; rainbow trout, Oncorhynchus mykiss; flounder, Platichthys flesus). In general we found that the more distinct the Sertoli cells the higher the activity of gamma-GTP. |
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