Female lordosis pattern in the male rat induced by estrogen and progesterone: effect of interruption of the dorsal inputs to the preoptic area and hypothalamus

K. Yamanouchi, Y. Arai

    研究成果: Article査読

    30 被引用数 (Scopus)

    抄録

    Lordosis behavior was very rare in castrated male rats which had been pretreated with 50 μg estradiol benzoate (EB) for successive 2 days and 1 mg progesterone (P) 6-8 hr prior to testing on the third day. Only one out of 8 rats displayed lordosis in response to mounts by the sexually matured males. However, the occurrence of lordosis behavior was markedly increased in similarly treated castrated males in which the dorsal afferents to the preoptic areas (POA) and hypothalamus were removed by the surgical cut. Twelve out of 19 rats of the group showed lordosis response. The incidence was less frequent in rats receiving sham deafferentation. These results suggest that the dorsal inputs to the POA and hypothalamus may exert a tonic inhibitory influence on the lordosis mediating system in the male rat.

    本文言語English
    ページ(範囲)243-246
    ページ数4
    ジャーナルEndocrinologia Japonica
    22
    3
    出版ステータスPublished - 1975

    ASJC Scopus subject areas

    • Endocrinology

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