侧向下丘脑指导压力诱导的急性和牛皮的调节
Jagat Narayan Prajapati1, Aynal Hoque2, Manojeet Pattanayak1
1Centre for Neuroscience, Indian Institute of Science, Bengaluru, Karnataka 560012, India.
Cell reports
|February 21, 2026
概括
研究人员确定了侧面下丘脑区域 (LHA) 神经元,这些神经元调节压力和. 激活这些神经元会抑制和焦虑,同时抑制它们会使恶化,揭示了一个关键的压力神经电路.
科学领域:
- 神经科学是一个神经科学.
- 行为神经科学 行为神经科学
- 压力研究 压力研究
背景情况:
- 压力显著影响的感知,急性压力抑制和慢性压力加剧.
- 压力诱导的调节背后的精确神经回路在很大程度上是未知的.
- 侧下垂体区域 (LHA) 参与应激反应,但其在方面的作用尚未被探索.
研究的目的:
- 为了研究特定的侧面下丘脑区域 (LHA) 神经元在调节压力诱导的中所起的作用.
- 为了确定神经机制,通过LHA神经元影响焦虑类行为和.
主要方法:
- 利用神经活动依赖的遗传标记 (压力-TRAP) 来识别和准压力敏感的LHA神经元.
- 使用化学遗传工具在体内选择性地激活或抑制这些LHA神经元.
- 进行了向跟踪来绘制从LHA神经元到大脑干区域的投影.
- 进行了投影特定的操作,以确定下游目标在调节中的作用.
主要成果:
- 暂时激活LHA神经元诱导了类似焦虑的行为和地方厌恶,同时抑制了急性和慢性.
- 这些LHA神经元的抑制会增强.
- 这些神经元在慢性模型中表现出与擦相关的活动,并增强了ex vivo激发能力.
- LHA神经元向大脑干调节中心 (PAG,RVM,LPBN) 发射,PAG通路对于抑制是至关重要的.
结论:
- 一个以LHA神经元及其脑干投射为中心的新型压力电路已经被发现.
- LHA神经元在抑制和焦虑方面发挥着至关重要的作用,特别是在压力下.
- 准LHA-PAG通路为与压力相关的症提供了潜在的治疗策略.
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