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The effect of estradiol benzoate on cholesterol and vitamin A metabolism


, : The effect of estradiol benzoate on cholesterol and vitamin A metabolism. Proc Soc Exp Biol Med 120(1): 45-48

Weanling male rats depleted of their liver vitamin A stores were given the following for 21 days: 0.5 or no cholesterol; 150 or 1000 international units of vitamin A acetate daily; and subcutaneous injections of 4 [mu]g of estradiol benzoate (EB) 3 times a week in 0.1 ml of cottonseed oil, or the carrier oil only. One-half of the rats were castrated at about 4 weeks of age. Castrates showed an inverse relationship between liver vitamin A and cholesterol deposition. Estro-genic-treated castrates fed cholesterol responded, as the intact rats, with an inverse relationship between liver cholesterol deposition and dietary vitamin A level. That estradiol benzoate depressed the liver cholesterol content in both intact rats and the castrates fed cholesterol with the high vitamin A level may be a reflection of the effect of EB on liver weight only. EB increased the liver vitamin A concentration in both castrates and intact rats fed cholesterol and the high vitamin A level. EB increased the serum cholesterol level in all groups except the intact rats fed no cholesterol and the high vitamin A level.

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