Stress signalling pathways that impair prefrontal cortex structure and function.

Stress signalling pathways that impair prefrontal cortex structure and function.
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DOI:
10.1038/nrn2648
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发表时间:
2009-06
影响因子:
34.7
通讯作者:
Arnsten, Amy F. T.
Arnsten, Amy F. T.
中科院分区:
医学1区
文献类型:
--
作者:
Arnsten, Amy F. T.

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前额叶皮质(PFC)--大脑最进化的区域--维持着我们的最高阶认知能力。然而,它也是对压力暴露的有害影响最敏感的大脑区域。即使是非常轻微的急性不可控制的压力也会导致前额叶认知能力的快速和戏剧性的丧失,更长时间的压力暴露会导致前额叶树突的结构变化。最近的研究已经开始揭示介导压力对PFC的影响的细胞内信号传导通路。这项研究提供了线索,为什么遗传或环境的侮辱,解除抑制压力信号传导通路可以导致深刻的前额叶皮质功能障碍的症状在精神疾病。
The prefrontal cortex (PFC)—the most evolved brain region—subserves our highest-order cognitive abilities. However, it is also the brain region that is most sensitive to the detrimental effects of stress exposure. Even quite mild acute uncontrollable stress can cause a rapid and dramatic loss of prefrontal cognitive abilities, and more prolonged stress exposure causes architectural changes in prefrontal dendrites. Recent research has begun to reveal the intracellular signalling pathways that mediate the effects of stress on the PFC. This research has provided clues as to why genetic or environmental insults that disinhibit stress signalling pathways can lead to symptoms of profound prefrontal cortical dysfunction in mental illness.
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