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hippocampal CA1 中的 GABAergic 内神经元介导 PTSD 鼠类的上下文恐惧概括

Xiayu Gong¹, Zhixin Fan¹, Hanfang Xu¹

¹Research Center for Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China.

Journal of neurochemistry

|May 5, 2024

概括

hippocampus 中的 GABAergic 内神经元的损失有助于 PTSD 中的恐惧泛化. 抑制PERK通路保护这些神经元,并减少与PTSD相关的恐惧泛化.

科学领域:

神经科学是一个神经科学.
细胞生物学细胞生物学
精神病学是一个精神病学.

背景情况:

过度泛化恐惧是创伤后应激障碍 (PTSD) 的一个关键特征.
海马体中的GABAergic内神经元调节恐惧记忆,但它们在PTSD相关恐惧概括中的作用尚不清楚.
海马体 CA1 GABAergic 内神经元与上下文恐惧记忆有关.

研究的目的:

研究海马CA1GABAergic内部神经元在创伤后应激障碍的老鼠模型中的情境恐惧概括中的作用.
探索PERK途径在PTSD中GABAergic内部神经元功能障碍中的参与.
确定调节PERK通路是否可以减轻PTSD中的恐惧泛化.

主要方法:

使用不可避免的脚震动 (IFS) 建立了PTSD的老鼠模型.
利用腺相关病毒 (AAV) 来降低海马CA1.1.中的GAD67表达.
服用沙布里纳尔,一种内分泌网膜应激抑制剂,以调节PERK通路.

主要成果:

降低CA1中的GAD67表达增强了大鼠的情境恐惧概括.
创伤后应激症老鼠在GABAergic内部神经元中表现出增加的p-PERK,CHOP和Caspase12表达.
沙鲁布林治疗保护了GABAergic内部神经元,减少了恐惧泛化,并降低了CHOP和Caspase12.

结论:

在海马体CA1中失去GABAergic内部神经元表型,有助于PTSD中的情境恐惧泛化.
PERK通路参与了PTSD中的GABAergic内部神经元损伤.
调节PERK通路提供了一种潜在的治疗策略,以保护GABAergic内部神经元并减少PTSD中的恐惧泛化.

关键词:

有GABA的内部神经元.在PERK路径上.创伤后应激障碍 (PTSD) 是一种细胞内膜网膜的压力应激恐惧一般化恐惧

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