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慢性饮酒过度诱导的对结肠炎症的敏感性取决于微生物组

Diogo Fonseca-Pereira^1,2, Sena Bae^1,2, Monia Michaud^1,2

¹Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA, USA.

|August 20, 2024

概括

慢性暴饮暴酒会恶化肠道炎症和易患结肠炎,这种影响是由特定的肠道细菌驱动的,如Allobaculum spp. 这种酒精诱导的微生物组改变可以转移到其他小鼠,恶化结肠炎.

科学领域:

胃肠病学胃肠病学
微生物学微生物学
毒理学毒理学毒理学

背景情况:

滥用酒精会改变肠道透性和微生物组合,与酒精性肝病和炎症性肠病 (IBD) 有关.
以前的研究经常将酒精的影响与肝脏疾病混为一谈,因此需要一个模型来分离乙醇对结肠及其微生物群的直接影响.

研究的目的:

开发一种慢性暴饮暴饮的小鼠模型,以研究其对结肠和肠道微生物组的直接影响,独立于肝脏疾病.
要确定酒精诱导的肠炎易感性是否依赖于肠道微生物群,以及特定细菌是否介导这种效应.

主要方法:

建立了一个小鼠模型,使用每天的乙醇饮料来模仿慢性暴饮暴饮的模式.
利用 gnotobiotic 小鼠和微生物移植来评估肠道微生物群在酒精诱导的大肠炎中的作用.
肠道微生物组合的量化变化,特别是*Allobaculum spp*的扩张.

主要成果:

慢性暴饮暴饮乙醇饮酒加剧了肠道感染,结肠损伤和炎症,其影响在饮酒后仍然存在.
酒精驱动的肠炎敏感性被证实是微生物群依赖的,可以通过便微生物组移植转移.
*Allobaculum spp. 这种类型的. *,特别是*Allobaculum fili*,在过度饮酒的小鼠中显著扩大,并且足以在不饮酒的小鼠中增强结肠炎.

结论:

慢性饮酒会改变肠道微生物组,增加对结肠炎的易感性.
*Allobaculum spp. 的扩散. * 在酒精加剧的大肠炎中起病原性作用.
这项研究提供了一个研究过度饮酒-微生物群-宿主相互作用的模型,并强调了Allobaculum spp. *作为有关IBD发病或爆发的结肠病原细菌.

关键词:

这种植物是Allobaculum.过度饮酒过度饮酒过度饮酒过度饮酒我们的肠道微生物群.炎症性肠道疾病炎症性肠道疾病

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