由肠道微生物群衍生的细胞外囊泡影响大鼠的酒精摄入偏好
Macarena Díaz-Ubilla1, Aliosha I Figueroa-Valdés2, Hugo E Tobar2
1Center for Regenerative Medicine, Faculty of Medicine, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile.
Journal of extracellular vesicles
|March 18, 2025
概括
肠道细菌通过细菌细胞外囊泡 (bEVs) 进行交流,可以在老鼠之间传播高酒精消耗. 这种效应是由迷走神经介导的,独立于炎症.
科学领域:
- 微生物学 微生物学
- 神经科学是一个神经科学.
- 胃肠病学 胃肠病学
背景情况:
- 肠道微生物群失调与饮酒障碍有关.
- 细胞外囊泡 (EVs) 调解细菌通信,但它们在成中的作用尚不清楚.
研究的目的:
- 研究肠道微生物群衍生的细菌细胞外囊泡 (bEVs) 在驱动高酒精消费中的作用.
- 确定bEV诱导的酒精摄入机制.
主要方法:
- 从高饮酒 (UChB) 的老鼠中分离了bEV,并将其给拒绝酒精的Wistar老鼠.
- 使用三瓶选择测试评估酒精消耗.
- 进行了分子分析和阴道切割来研究机制.
主要成果:
- 来自UChB的bEV增加了Wistar大鼠的酒精消耗量,增加了10倍.
- bEV的使用并没有引起系统性或脑部炎症.
- 吸管术消除了bEV诱导的酒精消费增加,这表明迷走神经的中介作用.
结论:
- 来自肠道微生物群的bEVs可以在老鼠菌株之间传递高酒精饮酒行为.
- 这种效果由迷走神经通过一种独立于炎症的通路进行介导.
- bEVs代表了与肠道微生物群相关的酒精摄入的新机制.
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