Chronic social stress in puberty alters appetitive male sexual behavior and neural metabolic activity.
Chronic social stress in puberty alters appetitive male sexual behavior and neural metabolic activity.
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DOI：
10.1016/j.yhbeh.2014.05.002
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发表时间：
2014-07
影响因子：
3.5
通讯作者：
Delville, Yvon
中科院分区：
文献类型：
--
作者：
Bastida, Christel C.;Puga, Frank;Gonzalez-Lima, Francisco;Jennings, Kimberly J.;Wommack, Joel C.;Delville, Yvon
关键词：
Repeated social subjugation in early puberty lowers testosterone levels. We used hamsters to investigate the effects of social subjugation on male sexual behavior and metabolic activity within neural systems controlling social and motivational behaviors. Subjugated animals were exposed daily to aggressive adult males in early puberty for postnatal days 28 to 42, while control animals were placed in empty clean cages. On postnatal day 45, they were tested for male sexual behavior in the presence of receptive female. Alternatively, they were tested for mate choice after placement at the base of a Y-maze containing a sexually receptive female in one tip of the maze and an ovariectomized one on the other. Social subjugation did not affect the capacity to mate with receptive females. Although control animals were fast to approach females and preferred ovariectomized individuals, subjugated animals stayed away from them and showed no preference. Cytochrome oxidase activity was reduced within the preoptic area and ventral tegmental area in subjugated hamsters. In addition, the correlation of metabolic activity of these areas with the bed nucleus of the stria terminalis and anterior parietal cortex changed significantly from positive in controls to negative in subjugated animals. These data show that at mid-puberty, while male hamsters are capable of mating, their appetitive sexual behavior is not fully mature and this aspect of male sexual behavior is responsive to social subjugation. Furthermore, metabolic activity and coordination of activity in brain areas related to sexual behavior and motivation was altered by social subjugation.
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