反复使用抗生素的病史会导致微生物群依赖的粘液缺陷
Kertu Liis Krigul1, Rachel H Feeney2,3,4, Supapit Wongkuna2,3,4
1Estonian Genome Centre, Institute of Genomics, University of Tartu, Tartu, Estonia.
Gut microbes
|July 22, 2024
概括
重复使用抗生素会改变肠道微生物群,损害肠道粘液屏障功能. 这项研究表明,人类的长期抗生素病史导致粘液生长减少,小鼠的肠道透性增加.
科学领域:
- 微生物组研究的研究.
- 胃肠道的健康状况
- 抗生素耐药性 抗生素耐药性
背景情况:
- 重复使用抗生素显著影响肠道微生物多样性和社区结构.
- 抗生素史的长期影响,与最近使用不同,对肠道微生物群在粘膜屏障功能中的作用仍然不清楚.
研究的目的:
- 调查反复使用抗生素对微生物介导的肠粘液屏障功能的长期生理后果.
- 探索抗生素形状的肠道微生物群如何影响粘液层完整性和宿主微生物相互作用.
主要方法:
- 从有反复使用抗生素史或健康对照个体移植人类便微生物群 (FMT) 到无菌小鼠.
- 结肠组织突破物的ex vivo分析,以评估粘液层生长速度和透性.
- 步枪元基因组测序以表征微生物群落组成并识别主导细菌物种.
- 代谢物分析分析改变微生物群的生化后果.
主要成果:
- 人类的微生物群与反复使用抗生素的历史导致粘液生长率降低和粘液透性增加在移植小鼠与对照相比.
- 枪支元基因组测序显示,在暴露于抗生素的小鼠中,肠道微生物群的组成发生了显著的变化,并丰富了使用粘液的细菌,如Akkermansia muciniphila和Bacteroides fragilis.
- 观察到不同的代谢物概况,表明在抗生素形状的微生物群落内,粘液降解能力发生了变化.
结论:
- 人类长期使用抗生素可能会导致肠道微生物群体的长期变化.
- 这些抗生素诱导的微生物转移导致维持肠道粘液屏障功能的能力受损.
- 这些发现突出了一个潜在的机制,将抗生素史与肠道健康受损联系在一起,通过微生物群介导的对粘膜屏障的影响.
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