title: Activation of sexual behaviour in castrated rats with the synthetic androgen 17 beta-hydroxy-17 alpha-methyl-estra-4,9,11-triene-3-one (R 1881).
abstract: Castrated sexually inactive rats were treated with the synthetic androgen 17 beta-hydroxy-17 alpha-methyl-estra-4,9,11-triene-3-one (methyltrienolone, R 1881), testosterone benzoate (TB), 5 alpha-dihydrotestosterone benzoate (DHTB) or oestradiol benzoate (OB) and tested for sexual behaviour. The synthetic androgen, R 1881, was as potent as TB in stimulating sexual behaviour and OB stimulated all aspects of copulatory behaviour but DHTB had no significant effect. The synthetic androgen, R 1881, is not metabolized by target cells and rapid metabolism could explain the failure of DHTB to stimulate sexual behaviour.
mesh_terms: D000728:Androgens / Q000494:pharmacology*; D000818:Animals; D002369:Castration; D013196:Dihydrotestosterone / Q000494:pharmacology; D004958:Estradiol / Q000494:pharmacology; D004963:Estrenes / Q000494:pharmacology*; D006728:Hormones / Q000494:pharmacology*; D008297:Male; D015741:Metribolone; D051381:Rats; D012726:Sexual Behavior, Animal / Q000187:drug effects*; D013739:Testosterone / Q000494:pharmacology
chemical_list: D000728:Androgens; D004963:Estrenes; D006728:Hormones; D013196:Dihydrotestosterone; D015741:Metribolone; D013739:Testosterone; D004958:Estradiol