位于下丘脑副腹腔核中的α2δ-1-NMDAR1复合体调解了焦虑诱导的同情性过度活动
Shaoru Zhang1,2, Jia Tian1,2, Bing Han1,2
1Department of Neurology, Hebei Hospital, Xuanwu Hospital of Capital Medical University, Shijiazhuang, Hebei, China.
概括
焦虑通过下丘脑前腔室核 (PVN) α2δ-1-NMDAR1复合体提升了交感神经活动. 来自心电图的皮肤交感神经活动 (SKNA) 显示出在焦虑中作为交感功能的非侵入性测量手段的潜力.
科学领域:
- 神经科学是一个神经科学.
- 心脏病学 心脏病学
- 精神病学是一个精神病学.
背景情况:
- 焦虑症与交感神经系统 (SNS) 活动增加有关.
- 了解驱动这种同情性过度活动的神经机制对于开发有效治疗是至关重要的.
- 临床研究需要评估同情性外流的非侵入性方法.
研究的目的:
- 为了研究焦虑期间同情神经活动的变化.
- 阐明焦虑时同情性放电增加的潜在机制.
- 评估皮肤交感神经活动 (SKNA) 作为交感外流的非侵入性相关物.
主要方法:
- 雄性Sprague-Dawley大鼠遭受了慢性不可预测的轻度压力 (CUMS),以诱导焦虑.
- 用开放场测试和升高加迷宫来评估类似焦虑的行为.
- 记录了星状质神经活动 (SGNA) 和SKNA,并分析了它们之间的关系.
- 研究了NMDAR1抑制剂 (AP-5) 和α2δ-1对SGNA/SKNA的作用,在微注射到下丘脑侧腔核 (PVN) 后进行了研究.
- 分析了GluN1和α2δ-1的PVN表达,以及血中的北上腺素 (NE) 和皮质激素 (CORT) 水平.
主要成果:
- CUMS老鼠表现出显著的焦虑类行为,并增加了SGNA和SKNA.
- SGNA和SKNA在时间域和功率光谱密度配置文件的一致性中显示出了显著的正相关性.
- 在CUMS大鼠中观察到PVN GluN1和α2δ-1的升级和增强相互作用.
- 在CUMS大鼠中微注射AP-5或α2δ-1正常化SGNA/SKNA,在顺序应用时没有添加剂效果.
结论:
- 焦虑通过PVN α2δ-1-NMDAR1复合物的上调来增加同情活动.
- 一个来自心电图的信号SKNA与SGNA相关,在焦虑研究中具有作为同情功能非侵入性指数的潜力.
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