阻断大脑淋巴系统可以减少缺血性中风中中心和周围的炎症反应
Lingfei Yang1, Qingsheng Li1, Kaixin Wang2
1Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Academy of Medical Science, Zhengzhou University, Zhengzhou, China.
Brain research
|February 25, 2024
概括
在老鼠中阻断脑膜淋巴管减少了中风损伤和脑部炎症. 这项研究强调了淋巴血管在中风诱导的免疫反应和潜在的治疗点中的作用.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 血管生物学 血管生物学
背景情况:
- 缺血性中风会引发内炎症和二次脑损伤.
- 外周免疫细胞的激活加剧了中风后的全身炎症反应.
- 脑膜淋巴血管 (LVs) 参与中枢神经系统的免疫监测.
研究的目的:
- 研究脑膜淋巴体在缺血性中风后免疫细胞透和激活中的作用.
- 评估脑膜淋巴功能调节在中风模型中的治疗潜力.
主要方法:
- 在Sprague Dawley大鼠中,双边深部淋巴结 (dCLNs) 在中脑动脉封闭 (MCAO) 之前被切除.
- 评估了免疫细胞在大脑中的透,微质细胞和天体细胞的激活,以及外围免疫细胞群.
- 测量了血中的炎症性细胞因子水平.
- 使用腺相关病毒血管内皮生长因子C (AAV-VEGFC) 进行反向验证,提高了脑膜淋巴功能.
主要成果:
- 阻断脑膜LVs显著降低了心脏病发作量和免疫细胞在大脑中的透.
- 在dCLN去除后,微质和亲炎性星球细胞激活被抑制.
- 由于dCLN的枯竭导致脏和血液中CD4+,CD8+T淋巴细胞,B淋巴细胞,巨细胞和中性粒细胞的减少.
- 血中的炎症因子IL-6,IL-10,IL-1β和TNF-α的水平显著降低.
- 通过反向验证,AAV-VEGFC治疗证实了这些发现.
结论:
- 脑膜淋巴管在调解中央免疫反应和在缺血性中风后加剧脑损伤方面发挥着至关重要的作用.
- 向脑膜淋巴排水是缓解中风中二次脑损伤的有希望的治疗策略.
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