Intracerebral implantation of progesterone: re-examination of the brain sites responsible for facilitation of sexual receptivity in estrogen-primed ovariectomized rats. |
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Authors: | W G Luttge J R Hughes |
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Affiliation: | Department of Neuroscience and Center for Neurobiological Sciences University of Florida College of Medicine, Gainesville FL 32610 USA |
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Abstract: | Ovariectomized female rats were tested for sexual receptivity following SC priming with threshold doses of estradiol benzoate and intracerebral 27 ga implants of either progesterone or cholesterol. All females were repeatedly tested under both intracerebral hormone implant conditions. Cholesterol implants failed to activate receptivity, while progesterone implants in the interpeduncular-ventral tegmental area produced near maximal levels of receptivity within 30 min after implantation. Progesterone implants in the medial hypothalamus, anterior hypothalamus, preoptic area, pons, mesencephalic reticular formation and lateral mesencephalon failed to activate sexual receptivity. |
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Keywords: | Sexual receptivity Intracerebral progesterone Brain implant |
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