The effect of the antiestrogen CI-628 on androgen-induced aggressive behavior in castrated male mice |
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Authors: | C R Clark N W Nowell |
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Institution: | Department of Zoology, University of Hull, Hull, North Humberside, HU6 7RX, England |
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Abstract: | This study was conducted to determine whether or not the antiestrogen CI-628 would block testosterone-maintained fighting in castrated male mice. TO strain adult male mice were castrated and injected s.c. every day for 14 days with either (1) 75 μg testosterone or (2) 75 μg testosterone and 1 mg CI-628, and in addition 1 mg of CI-628 6 hr prior to each injection of antiestrogen and androgen. Vehicle-injected, castrated, and CI-628-injected animals were employed as controls. Testosterone-maintained intermale aggressive behavior was blocked by the antiestrogen CI-628. This study provides support for the hypothesis that testosterone exerts its effects on the central nervous elements involved in the control of aggressive behavior by its aromatization to estrogenic metabolites. |
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