抗生素可以释放神经炎症
Jessica E Kenison1,2,3, Francisco J Quintana1,2,3
1Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School , Boston, MA, USA.
The Journal of experimental medicine
|August 19, 2025
概括
肠道微生物组保护大脑炎症和认知衰退在移植与宿主疾病. 一种微生物代谢物TMAVA调节微质激活,以达到这种保护作用.
科学领域:
- 免疫学 免疫学 免疫学
- 神经科学是一个神经科学.
- 微生物学 微生物学
背景情况:
- 急性移植对宿主疾病 (aGVHD) 可以导致显著的神经炎症和认知障碍.
- 人们越来越认识到肠道微生物组在调节系统性炎症方面的作用及其对中枢神经系统的影响.
研究的目的:
- 研究肠道微生物群影响aGVHD中神经炎症和神经认知结果的机制.
- 为了确定参与这种神经保护过程的特定微生物代谢物.
主要方法:
- 使用了aGVHD鼠标模型.
- 分析了肠道微生物组合和代谢物概况.
- 评估了大脑中的微质激活标志物.
- 研究了特定微生物代谢物对神经炎症的影响.
主要成果:
- 在aGVHD中,肠道微生物组显著限制了神经炎症,并保留了神经认知功能.
- 微质激活是由肠道微生物代谢产物调节的.
- 微生物代谢物4-trimethylaminobutyric acid (TMAVA) 被确定为一个关键的媒介.
结论:
- 肠道微生物组代谢物,特别是TMAVA,在aGVHD期间在缓解神经炎症和神经认知衰退方面发挥着至关重要的作用.
- 准肠道微生物组或其代谢物是GVHD相关的神经并发症的潜在治疗策略.
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