Journal of Environmental BiologypISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP |
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Abstract - Issue Sep 2009, 30 (5) BackTestosterone
and estradiol-17b dependent phospholipid biosynthesis in ovariectomized catfish, Heteropneustes
fossilis (Bloch) Department
of Zoology, (Received:
Abstract: Effect of cumulative doses (7, 14 and
28 mgkg-1 body weight) of testosterone (T) and estradiol-17b (E2) on total phospholipids (TP), phosphatidylcholine
(PC), phosphatidylserine (PS), phosphatidylinositol
(PI) and phosphatidylethanolamine (PE) in tissues
were investigated during the gonadal recrudescence,
in prespawning phase of the annual reproductive cycle
in intact and ovariectomized freshwater catfish, Heteropneustes fossilis. After ovariectomy, the hepatic levels of TP and PE were elevated
and remained unaffected for PC, PS and PE when compared with control. In
general, T and E2 were stimulatory for a specific class of phospholipid
in tissues of intact and ovariectomized catfish.
These effects were higher at 14 and 28 mg kg-1 body weight in ovariectomized catfish whereas 7 mgkg-1 body weight? of T and E2
have pronounced effect in intact ovaries. In conclusion, the various phospholipid biosynthesis were under T and E2 dependent.
Among the phospholipid, the PC was the main
constituent and was sex steroid dependent biosynthesis during prespawning phase. Key words: Sex steroids, Phospholipid,
Ovariectomy, Reproductive growth, Fish ??????????? PDF of full length
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