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Sexual behavior in female rats depends on the action of estradiol on estrogen receptors (ERs) found in particular brain regions. While hormonal regulation of female sexual behavior requires ER␣, the possible functions of ER␤ remain to be clarified. Mating stimulation has several behavioral and physiological consequences and induces Fos expression in many(More)
Estrogen and progestin receptors (ER, PgR) play a critical role in the regulation of neuroendocrine functions in females. The neuroanatomical distribution of the recently cloned, ER beta, overlaps with both ER alpha and PgR. To determine whether ER beta is found within ER alpha- or PgR-containing neurons in female rat, we used dual label(More)
Conversion of testosterone into estradiol is important for male rat sexual behavior, and both steroids probably contribute to mating. The distributions of neurons containing androgen receptors (AR) and estrogen receptors (ER) overlap, and many AR-immunoreactive (AR-ir) neurons express Fos immunoreactivity (Fos-ir) induced by mating. Because mating-induced(More)
This study was designed to determine the extent to which Fos immunoreactivity (induced either by mating or noncontact sociosexual interaction) and androgen receptor (AR) immunoreactivity are colocalized in brain and spinal cord of male rats. Some males (Mated) were allowed to mate to ejaculation; others (Social Controls) were placed with females but(More)
The distribution of androgen receptor immunoreactive-neurons, mapped with the PG21 anti-androgen receptor antibody, was compared in male rat brains with the distribution of Fos-immunoreactive neurons induced by mating. In gonadally intact, but not in castrated male rats, substantial numbers of androgen receptor-containing neurons were present in a variety(More)
Sensory cues from male rats, such as odours and vaginal-cervical stimulation (VCS), play a modulatory role in female rat sexual behaviour. For example, exposure to male odours and VCS appears to be at least partially responsible for increases in sexual behaviour following repeated mating of oestradiol-primed female rats. Although there is evidence that VCS(More)
Two studies were designed to document neuronal colocalization of androgen receptor immunoreactivity and mating-induced Fos immunoreactivity (AR-ir, Fos-ir) in brain of male rats and to examine the extent to which limbic and midbrain neurons that project to the preoptic area are androgen sensitive and activated by mating. Brains from male rats, killed 1 h(More)
Estradiol and other hormones are thought to be critical for the onset, but not maintenance, of maternal behavior in rats. Maternal behavior is instead maintained postpartum by tactile stimulation that dams receive during interactions with pups, and many neural sites implicated in the control of maternal behavior show elevated c-fos activity in response to(More)
Central injections of neuropeptide Y (NPY) increase food intake in Syrian hamsters; however, the effect of NPY on sexual behavior in hamsters is not known nor are the receptor subtypes involved in feeding and sexual behaviors. We demonstrate that NPY inhibits lordosis duration in a dose-related fashion after lateral ventricular injection in ovariectomized,(More)
Sexual behavior in female rats depends on the action of estradiol on estrogen receptors (ERs) found in particular brain regions. While hormonal regulation of female sexual behavior requires ERalpha, the possible functions of ERbeta remain to be clarified. Mating stimulation has several behavioral and physiological consequences and induces Fos expression in(More)