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Horm Res. 1986;24(1):38-45.

Imprinting of male sex tissues by neonatal endogenous androgens in mice. Molecular alterations following exposure to cyproterone acetate.


This study was conducted to evaluate the growth and biochemical responsiveness of the epididymis, vas deferens and seminal vesicles of adult mice exposed to cyproterone acetate during the first 10 days of life. Results indicate that the weight and protein content of sex accessory organs were significantly depressed, testosterone and dihydrotestosterone concentrations were unaffected or increased, the number of cytosolic androgen-binding sites was slightly or significantly reduced. The efficiency of exogenous testosterone in promoting growth and protein synthesis in target organs of castrated adult males was significantly lowered by neonatal cyproterone acetate treatment. It is concluded that a deficient androgenic stimulation during neonatal life induces a limited response of sex target organs to endogenous or exogenous androgens in adulthood.

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