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首页> 外文期刊>The European Journal of Neuroscience >Changes in Fos expression in the accessory olfactory bulb of sexually experienced male rats after exposure to female urinary pheromones.
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Changes in Fos expression in the accessory olfactory bulb of sexually experienced male rats after exposure to female urinary pheromones.

机译：有性经验的雄性大鼠暴露于女性泌尿激素后，其副嗅球中Fos表达的变化。

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摘要

We studied Fos-immunoreactive (Fos-ir) structures in the accessory olfactory bulb (AOB) of rats after the vomeronasal organ was exposed to urine. Exposure of the vomeronasal organ of male Wistar rats to oestrous and dioestrous female Wistar urine led to the appearance of many Fos-ir cells in the rostral region of the periglomerular cell (PGC) layer, but induced few Fos-ir cells in the caudal region. These results suggest that the regionalization of Fos-ir cells after exposure to female urine is remarkable in the PGC layer of the AOB. Sexually experienced male rats have been shown to prefer oestrous to dioestrous female urine, while sexually inexperienced males do not exhibit these preferences. In the present study, we compared the expression of Fos-ir cells in the AOB of sexually experienced and sexually inexperienced male rats following exposure to oestrous and dioestrous urine. In the localized region (lateral and rostral sectors) of the PGC layer, many more Fos-ir cells were expressed in the sexually experienced rats than in the inexperienced rats. These results suggest that sexual experience in males enhances the transmission of reproductively salient information concerning potential oestrous status to a specific PGC region of the AOB.
机译：我们研究了犁鼻器器官暴露于尿液后大鼠副嗅球（AOB）的Fos免疫反应性（Fos-ir）结构。雄性Wistar大鼠的雌性和雌性Wistar尿液的鼻窦器官暴露导致在肾小球周围细胞（PGC）层的前部区域出现许多Fos-ir细胞，但在尾部区域诱导了很少的Fos-ir细胞。这些结果表明，暴露于女性尿液后，Fos-ir细胞的区域化在AOB的PGC层中非常明显。有性经验的雄性大鼠已显示雌雄同体，而不是雌雄同体的雌性尿，而没有性行为的雄性则没有这些偏好。在本研究中，我们比较了有雌雄异色和雌雄同体的尿液后，有性和无性经历的雄性大鼠AOB中Fos-ir细胞的表达。在PGC层的局部区域（外侧和顶部），有经验的大鼠中表达的Fos-ir细胞比没有经验的大鼠中更多。这些结果表明，男性的性经历增强了与潜在的雌性状态有关的生殖显着信息向AOB的特定PGC区域的传递。

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