饮食与微生物组的相互作用促进了脊髓损伤后肠道神经系统的弹性
Adam M Hamilton1, Lisa Blackmer-Raynolds1, Yaqing Li1
1Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, USA.
NPJ biofilms and microbiomes
|August 29, 2024
概括
食纤维的胰岛素通过支持肠道神经系统 (ENS) 来预防脊髓损伤 (SCI) 引起的肠道问题. 这突出了恢复的饮食-微生物组-免疫连接.
科学领域:
- 神经科学是一个神经科学.
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
背景情况:
- 脊髓损伤 (SCI) 导致全身性问题,包括肠道动力障碍和肠道神经系统 (ENS) 缩.
- 肠道神经系统可以从损伤中恢复过来,但在SCI之后,肠道问题往往会持续下去.
- 肠道微生物组合的变化越来越多地与SCI结局有关.
研究的目的:
- 调查微生物组调制在SCI后肠道恢复中的作用.
- 为了确定食纤维,特别是胰岛素,是否可以预防SCI诱导的ENS缩和不运动.
- 阐明ESN受伤后弹性中饮食-微生物组-免疫相互作用的基础机制.
主要方法:
- 在SCI后给小鼠注射胰岛素,一种食纤维.
- 对ENS结构和功能,肠道微生物组合和短链脂肪酸 (SCFA) 代谢物的分析.
- 评估IL-10信号传递在胰岛素中介作用中的作用.
主要成果:
- 在小鼠中,胰岛素干预预防了SCI诱导的ENS缩和肠道动力障碍.
- 单独与SCI相关的微生物组不足以恢复肠道运动.
- 微生物衍生的SCFA,但不是特定的微生物,改善了受伤后的ENS功能障碍.
- 胰岛素的保护作用取决于IL-10信号传递.
结论:
- 像胰岛素这样的饮食干预可以促进SCI后的ENS弹性.
- 微生物代谢物和免疫信号通路对于在受伤后维持肠道功能至关重要.
- 这项研究建立了一个饮食-微生物组-免疫轴,这对于治疗策略至关重要,该策略针对SCI后的神经性肠道.
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