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肠道微生物群在患有Clostridioides difficile殖民和感染的患者中的特征和动态

Yanzi Zhou¹, Lihua Guo², Tingting Xiao²

¹State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; Department of Rheumatology, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou 310003, China.

Microbes and infection

|June 10, 2024

概括

肠道微生物群的变化影响了Clostridioides difficile感染 (CDI) 的风险. 增加的 Bacteroidetes 和短链脂肪酸 (SCFA) 生产细菌与殖民抵抗相关,而机会性病原体与 CDI 发展有关.

科学领域:

微生物学微生物学
胃肠病学胃肠病学
转基因组学是指转基因组学.

背景情况:

肠道微生物群失调是增加对Clostridioides difficile感染 (CDI) 易感性的关键因素.
了解肠道微生物和C. difficile之间的复杂关系对于开发有效的预防和治疗策略至关重要.

研究的目的:

调查肠道微生物群和C. difficile殖民和感染之间的相互作用模式.
在没有C. difficile殖民 (CDN),C. difficile殖民 (CDCp) 和CDI不同阶段 (PRECDI,ONCDI,POSTCDI) 的个体中区分微生物和代谢特征.

主要方法:

使用元基因组测序来分析肠道微生物群的组成和功能.
对不同患者群体的微生物多样性,特定细菌种群 (Bacteroidetes,SCFA产生细菌) 和代谢途径的比较分析.
进行了相关性分析,以确定微生物变化和C. difficile状态之间的关联.

主要成果:

在CDN和CDCp组之间没有观察到微生物群多样性的显著差异.
CDCp显示Bacteroidetes和SCFA产生细菌的增加,与C. difficile殖民积极相关.
ONCDI和POSTCDI显示微生物群多样性减少,Bacteroidetes和SCFA产生细菌减少,以及与机会性病原体的正相关性.

结论:

增加的Bacteroidetes和SCFA产生细菌,以及改变的氨基酸和脂肪酸代谢,与对C. difficile的殖民抵抗有关.
在ONCDI和POSTCDI中胆汁分泌途径的丰富表明在C. difficile感染进展中发挥了作用.
复杂的微生物群-代谢相互作用,特别是在脂肪酸和胆酸代谢中,对于调节C. difficile殖民和感染风险至关重要.

关键词:

困难的殖民化殖民.这是一种C. difficile感染.动力学动力学动力学我们的肠道微生物群.大基因组测序的测序.

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