积极应对减轻压力对前额皮层葡萄糖皮质水平的影响
Matthew G Frank1, Emily S Levy2, Gianni N Bonnici2
1Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, CO 80301, USA; Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80301, USA.
Brain, behavior, and immunity
|August 30, 2025
概括
与无法控制的压力相比,行为控制降低了大脑皮质 (CORT) 并改变了中部前额叶皮质 (PFC) 中的CORT敏感基因表达. 这表明积极应对塑造了局部压力反应.
科学领域:
- 神经科学
- 压力生理学
- 行为内分泌学
背景情况:
- 压力因素会增加皮质糖 (GCs),影响大脑功能和神经炎症.
- 行为控制可以减轻压力后果, 但不会减少外围HPA轴的活动.
- 大脑GC水平可以独立于HPA输出.
研究的目的:
- 调查行为控制是否会改变大脑皮质水平和对皮质敏感基因的表达.
- 确定这些影响是否特定于大脑区域,如中枢前额叶皮层 (PFC).
主要方法:
- 它们受到可控制的 (可避免的冲击,ES) 或不可控制的 (不可避免的冲击,IS) 压力.
- 在PFC中测量了CORT水平,基因表达 (Nr3c1,Ilb,Nlrp3,Cd200r1),IL-1β蛋白和11β-HSD1.
- 在ES和IS组之间进行了比较.
主要成果:
- 行为控制 (ES) 选择性地减弱了大脑中的压力诱导的CORT.
- 与IS相比,PFC中的ES调节的CORT敏感基因和IL-1β蛋白.
- 在ES与IS中,压力诱导的PFC11β-HSD1表达显示出差异调节 (mRNA与蛋白质).
- 在其他大脑结构中没有观察到这些可控性效应.
结论:
- 通过行为控制,积极应对压力,调节大脑中的局部GC作用,特别是PFC.
- 这种局部调节可能会塑造对压力的认知和神经免疫反应.
- 这些发现突显了控制能力在调解压力的神经生物学影响方面的重要性.
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