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糖皮质受体的激活促进前带皮层的高频网络振荡

Daniel Frías Donaire¹, Yunus Emre Demiray², Ares Alizade³

¹Research Group "Synapto-Oscillopathies", Institute of Biology, Otto-von-Guericke-University, Magdeburg, Germany; Department of Genetics and Molecular Neurobiology, Institute of Biology, Otto-von-Guericke University, Magdeburg, Germany.

|September 5, 2025

概括

皮质 (CORT) 通过葡萄皮质受体 (GR) 增强前带皮质 (ACC) 中的大脑振荡. 这种由压力引起的神经活动可能会影响焦虑和情绪障碍.

科学领域:

神经科学
内分泌学
计算精神病学

背景情况:

在压力下,下丘脑-垂体-上腺 (HPA) 轴释放皮质 (CORT),影响大脑功能.
CORT与葡萄糖皮质体 (GR) 和矿物质皮质体 (MR) 受体相互作用,影响关键大脑区域的神经振荡.
CORT对神经振荡的确切影响,特别是在前带皮层 (ACC),仍然不完全理解.

研究的目的:

研究CORT对小鼠ACC神经网络振荡的急性影响.
确定特定的受体通路 (GR和MR) 调解CORT对ACC振荡的作用.
将压力引起的CORT水平变化与ACC振荡活动的变化相关联.

主要方法:

使用外生小鼠ACC切片模型来诱导β和缓慢的马振荡.
使用不同剂量的CORT和特定的GR/ MR激动剂和抗剂.
在急性压力 (恐惧条件) 后测量血清CORT水平和ACC振荡功率.

主要成果:

在ACC中,CORT以剂量依赖的,反转的U形方式增强了β和缓慢的波.
葡萄糖皮质体受体 (GR) 的激活模仿了CORT的作用,而GR的对抗作用则阻断了它们.
急性压力增加了血清CORT和ACC振荡活性,与CORT水平呈正相关性;MR激活的影响很小.

结论:

葡萄糖皮质体受体 (GR) 关键介导CORT对ACC网络振荡的影响.
由于CORT而改变的ACC振荡活性可能导致神经精神疾病,如焦虑,抑郁和精神分裂症.
这些发现提供了有关压力,HPA轴功能和大脑活动的神经生物学机制的见解.

关键词:

前带状皮层皮质子葡萄糖皮质体受体矿物质皮质类受体网络振荡

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