Abstract
The incorporation of C14-labelled acetate into fatty acids and cholesterol was studied in vitro in castrated and gonadal hormone-treated male and female rats. Measurements were also made on the incorporation of C14-labelled octanoic acid into acetoacetic acid by liver tissue and the incorporation of acetate and octanoate into CO2.Castration in the male, but not in the female, was followed by an increased incorporation of acetate into both liver and adipose tissue fatty acids and into liver cholesterol.Testosterone treatment led to a decreased incorporation into fatty acids by liver tissue in the male, whereas estradiol treatment of the female led to an increase in the incorporation of acetate into fatty acids by both liver and adipose tissue. Acetate incorporation into cholesterol was unaltered by hormone treatment in both sexes. The incorporation of octanoic acid into acetoacetic acid by liver tissue was decreased in the estradiol-treated female rat but was unaltered in the testosterone-treated male rat or by castration in either sex.
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