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A synaptocentric view of the neuroendocrine response to stress.

机译:神经内分泌对压力反应的突触中心视图。

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摘要

The essential role of parvocellular neuroendocrine cells (PNCs) in the paraventricular nucleus of the hypothalamus (PVN) is to translate real or perceived challenges into a comprehensive glucocorticoid (GC) hormone response. Synaptic inputs encoding physical and psychological stress engage the hypothalamic-pituitary-adrenal axis (HPA) by increasing PNC activity, and corticotropin-releasing hormone production and release. Following robust recruitment in response to stress, GCs feedback to dampen PNC responses. Here we review the contributions of glutamate and GABA synapses in PVN to the initiation and termination of the stress response. The reliability of HPA responses to a given stress can vary as a function of prior experience. Within this context, we examine possible synaptic correlates that allow this neuroendocrine system to learn and adapt following stress challenges.
机译:下丘脑(PVN)室旁核中小细胞神经内分泌细胞(PNC)的重要作用是将真实或感知的挑战转化为全面的糖皮质激素(GC)激素反应。编码身体和心理压力的突触输入通过增加PNC活性和促肾上腺皮质激素释放激素的产生和释放而参与下丘脑-垂体-肾上腺轴(HPA)。在响应压力而大量招募后,GC会反馈以减弱PNC响应。在这里,我们回顾了PVN中谷氨酸和GABA突触对应激反应的起始和终止的贡献。 HPA对给定压力反应的可靠性可能会根据先前的经验而变化。在这种情况下,我们检查可能的突触相关,使这种神经内分泌系统能够学习和适应以下压力挑战。

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