微细胞改变自主核神经元激活在外围细胞因子挑战后
Emily A Castellanos1, Luke A Schwerdtfeger1, Bret N Smith1
1Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA.
American journal of physiology. Cell physiology
|February 9, 2026
概括
周围瘤亡因子α (TNFα) 激活脑干自主核. 大脑干中的微质细胞调解这种反应,影响自主电路.
科学领域:
- 神经科学是一个神经科学.
- 自主神经系统研究 自主神经系统研究
- 神经免疫学 神经免疫学
背景情况:
- 自主神经系统 (ANS) 调节压力反应.
- 支持炎症的细胞因子,如瘤亡因子α (TNFα),可以影响自主功能障碍.
- 大脑干核对于自主控制至关重要.
研究的目的:
- 为了研究外围TNFα对关键脑干自主核中的细胞激活的影响.
- 确定微质在调解TNFα诱导的自主反应中的作用.
- 绘制脑干内细胞激活的空间分布图.
主要方法:
- 小鼠接受了TNFα的腹腔内注射.
- 使用c-Fos在背部阴道复合体 (DVC) 和腹侧髓 (VLM) 中的免疫反活性来测量细胞活性.
- 微质功能被抑制使用静脉内米诺环素,随后进行了TNFα挑战.
主要成果:
- 在DVC和VLM中,TNFα增加了c-Fos表达,特别是在侧面的 postrema (AP) 区域和孤独通道 (cNTS) 的尾部核内.
- 米诺环素治疗减少了AP和cNTS中的微质标记物 (IBA-1).
- 米诺环素预治疗减弱了TNFα诱导的c-Fos表达在DVC和面VLM.
结论:
- 像TNFα这样的外围促炎信号会诱导大脑干自主电路中的空间选择性细胞激活.
- 脑干微质细胞在调解对外周炎症的自主反应方面发挥着重要作用.
- 这些发现阐明了神经免疫相互作用控制在压力期间自主控制.
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