在急性和强烈的压力后对下丘脑神经发生障碍的新见解:对微质和炎症的影响
María Inmaculada Infantes-López1,2, Andrea Nieto-Quero2,3, Patricia Chaves-Peña1
1Departamento de Biología Celular, Genética y Fisiología, Universidad de Málaga, Málaga, Spain.
Frontiers in neuroscience
|July 10, 2023
概括
急性压力会影响成人下丘脑神经发生,并引发炎症. 这项研究表明,短期的压力会导致下丘脑中神经可塑性,炎症和代谢变化.
科学领域:
- 神经科学是一个神经科学.
- 神经生物学 神经生物学 神经生物学
- 压力研究 压力研究
背景情况:
- 下丘脑调节压力和平衡.
- 成人神经发生在下丘脑中,对于适应至关重要.
- 压力对下丘脑神经发生和炎症的影响在很大程度上是未知的.
研究的目的:
- 为了研究急性,强烈的压力对下丘脑神经发生和神经炎症的影响.
- 为了检查压力诱导的变化在特定的下丘脑核 (PVN,VMN,ARC) 和周周结膜区域.
- 探索压力在下丘脑中的分子和功能后果.
主要方法:
- 在成年雄性小鼠的水浸和约束应力 (WIRS) 模型中.
- 评估神经生成标记物 (例如DCX+细胞) 在下丘脑核中.
- 微质激活和炎症标志物 (例如IL-6) 的分析.
- 蛋白质组分析以确定压力诱导的蛋白质变化.
- 监测动物的体重和食物摄入量.
主要成果:
- 一次WIRS会话显著减少了下丘脑神经发生 (扩散和不成熟的神经元).
- WIRS诱导了微质激活,并在VMN和ARC中增加了IL-6水平,表明炎症.
- 蛋白质组分析显示,压力后1小时和24小时的下丘脑蛋白质丰度发生变化.
- 观察到动物体重和食物摄入量的轻微变化.
结论:
- 急性,强烈的压力深深地影响成人下丘脑神经发生,并诱导神经炎症.
- 短期的压力会在下丘脑中引发神经可塑性,炎症和代谢变化.
- 这些发现凸显了下丘脑对环境压力因素的脆弱性,以及它在与压力相关的疾病中的作用.
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