介质前额叶皮质的特定层输入与压力敏感性有关
Sabahaddin Taha Solakoğlu1, Şefik Evren Erdener1, Olga Gliko2
1Institute of Neurological Sciences and Psychiatry, Hacettepe University, Ankara, Turkey.
Translational psychiatry
|April 9, 2025
概括
容易受到压力会重组大脑连接. 容易受到压力的小鼠显示了中枢前额叶皮层 (mPFC) 的突触输入发生变化,与弹性或天真小鼠不同.
科学领域:
- 神经科学是一个神经科学.
- 压力研究 压力研究
- 突触性可塑性 突触性可塑性
背景情况:
- 应激反应对于适应至关重要,但应激易受性的机制尚不清楚.
- 慢性压力会影响中间前额叶皮层 (mPFC) 的结构,但远程突触影响尚不清楚.
研究的目的:
- 研究压力如何影响从腹腔海马体 (VH),底侧杏仁体 (BLA) 和腹膜区域 (VTA) 到mPFC的突触在不同的压力表型中.
- 确定压力易感性是否导致特定的突触重组模式.
主要方法:
- 从VH,BLA和VTA标记的突触到使用eGRASP的雄性老鼠mPFC.
- 获得了mPFC和细分树突和突触的3D图像.
- 在未经压力,性和易受影响的小鼠中分析了突触的丰富性,空间组织和近距离.
主要成果:
- 表面层 (II/III) 的突触组织与对照组相比,在性和易受性小鼠中显示出类似的变化.
- 在深层 (Vb,VI) 中,容易受到压力的小鼠表现出增加的BLA-mPFC和减少的VH-mPFC突触.
- 对深层mPFC的突触输入在易受压力的小鼠中变得混乱,多区域内化增加.
结论:
- 压力现象型以不同方式重组mPFC的长距离突触输入,以 afferent-和膜-特定的方式.
- 这些发现表明,VH,BLA和VTA预测在调解压力反应和易感性方面发挥着不同的作用.
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