Author:
Wiegand Murray D.,Peter R. E.
Abstract
The effects of sex steroids on plasma lipids in female goldfish were studied in sexually regressed and maturing fish at 12 °C, and in recent postovulatory-regressed fish at 21 °C. Intraperitoneal injection of oestrone (E1), but not oestradiol (E2), raised plasma triglyceride (TG) concentrations in regressed fish, but oestrogen had no effect on plasma TG in either maturing fish at 12 °C or in recent postovulatory–regressed fish at 21 °C. Progesterone injection caused high levels of plasma TG in maturing fish at 12 °C. Fish injected with E1or E2 had higher plasma total cholesterol (TC) levels posttreatment compared with control fish in both experiments at 12 °C, but E1 and E2 were without effect on plasma TC at 21 °C. Both E1 and E2 raised plasma lipid phosphorus levels in all three experiments. Testosterone generally had little effect on plasma lipids. These results support the hypothesis that oestrogen is involved in lipid mobilization in teleosts, and it appears that this effect is sensitive to warm temperature. There was no support for a mammalian-like, progesterone-stimulated system for clearance of plasma TG in the female goldfish.
Publisher
Canadian Science Publishing
Subject
Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics
Cited by
40 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献