Acceleration of mounting behaviors in female rats by ibotenic acid lesions in the ventromedial hypothalamic nucleus

@article{Matsumoto2000AccelerationOM,
  title={Acceleration of mounting behaviors in female rats by ibotenic acid lesions in the ventromedial hypothalamic nucleus},
  author={Takahiro Matsumoto and Korehito Yamanouchi},
  journal={Neuroscience Letters},
  year={2000},
  volume={291},
  pages={143-146}
}
Oestrogen‐Induced Vigorous Mounting in Female Rats Carrying Hypothalamic Knife Cuts
TLDR
In ovariectomized Wistar rats, 1‐ or 2‐mm wide knife cuts were placed in a coronal plane from the surface of the cortex to the floor of the cranial cavity to interrupt posterior efferents of the ventromedial nucleus of the hypothalamus to remove the inhibitory neural effect on mounting.
Estrogen and the neural mediation of female-male mounting in the rat.
TLDR
Data indicate that the ventromedial hypothalamus is a critical area of convergence of hormonal, olfactory, and somatosensory inputs for FMM.
Brain masculinization requires androgen receptor function.
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It is suggested that perinatal brain masculinization requires AR function and that expression of male-typical behaviors in adults is mediated by both AR-dependent and -independent androgen signaling.
Expression of Oestrogen Receptor α in the Brain of Brandt’s Voles (Lasiopodomys brandtii ): Sex Differences and Variations During Ovarian Cycles
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Data indicate that ERα expression in the brain of Brandt’s voles is sexually dimorphic in specific brain areas, and variations in the levels of circulating oestrogen during ovarian cycles can affect ERαexpression in the female brain in a region‐specific manner.
Steroid Modulation of Astrocytes in the Neonatal Brain: Implications for Adult Reproductive Function
TLDR
Speculation about and evidence in support of the functional significance of this dimorphism to adult reproductive functioning is the topic of this review.
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Results suggest that the median raphe nucleus plays an inhibitory role in the onset mechanism for mounting and a stronger inhibitory influence in regulating male sexual behavior exists in other serotonergic neurons than those in the median and dorsal raphe nuclei in female rats.
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The results suggest that the dorsal inputs to the POA and hypothalamus which pass anterior to the anterior commissure may exert an inhibitory influence not only on the female sexual behavior mediating system but also on the mounting mediates system in female rats.
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The results suggest that the synaptic organization in the VMN is sexually dimorphic but the occurrence of this structural difference is limited to the VL-VMN which is abundant in sex steroid receptors, and is modified by neonatal sex steroid environment.
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