Shivanandappa, T. and Sarkar, H. B. D. (1979) Seasonal lipid cycle and steroidogenic activity in the testis of the tropical skink, Mabuya carinata (Schneider): A histochemical study. General and comparative endocrinology, 38 (4). pp. 491-495. ISSN 0016-6480
Full text not available from this repository. (Request a copy)Abstract
During the annual spermatogenetic cycle of the skink, Mabuya carinata, there is a wellmarked seasonal lipid cycle and steroidogenic activity in the testis. In the spermatogenetically active testis (October-December), the lipid is sparse and the activities of Δ5 3β-17β-hydroxysteroid dehydrogenases are high in the Leydig cells. During the postnuptial testicular regression (January-May), there is a slow buildup of cholesterol-positive lipids in the testis along with the decreasing enzyme activities. In the fully regressed testis (June-July), the Leydig cells and seminiferous tubules are highly lipoidal and strongly cholesterolpositive and the steroidogenic enzymes are hardly demonstrable. During testicular recrudescence (late August-September), there is a marked lipid depletion when the seminiferous tubules are cleared of their lipids and the Leydig cells shed excess lipids and cholesterol reaction weakens suggesting rapid mobilization. Simultaneously there is a sharp rise in the activities of the steroidogenic enzymes indicating renewed steroidogenic activity of the interstitial Leydig cells. There is a inverse relationship between the seasonal lipid cycle and steroidogenic activity in the testis of M. carinata.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | animal experiment, Male, Animal, male genital system, Lizards, testis, Testis, Seasons, Histocytochemistry, cytology, Leydig Cells, steroidogenesis, mammal, Hydroxysteroid Dehydrogenases, lipid, Lipids, Steroids |
| Subjects: | B Life Science > Zoology |
| Divisions: | Department of > Zoology |
| Depositing User: | Dhruva Kumar |
| Date Deposited: | 10 Jun 2021 06:03 |
| Last Modified: | 10 Jun 2021 06:03 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/13916 |
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