The effect of various treatments on the size of sebaceous glands of hairless mice and hairless hamsters.

The effect of castration on the size of sebaceous glands of male hairless mice and male hairless hamsters was studied over a period of 4 weeks. Statistically significant decreases in the size of sebaceous glands were observed. The effects of intracutaneous injections of micronized crystalline suspensions of testosterone, testosterone propionate, testosterone phenylpropionate, testosterone decanoate and nandrolone phenylpropionate on the sebaceous glands of castrated hairless mice, castrated hairless hamsters and intact female hairless hamsters were studied over a period of one week. Highly significant increases in sebaceous gland volume were observed 6-7 days after treatment. The effects of subcutaneous and intracutaneous injections of micronized crystalline suspensions of testosterone on the sebaceous glands of intact male and female hairless hamsters were examined at sites local and distal to the injection. Increases in sebaceous gland volume were limited to local sites in the male but increases were observed locally and distally in the female. There was no difference between subcutaneous and intracutaneous injections.