精密的微生物组复制恢复了胆酸介导的对Clostridium difficile的耐药性
Charlie G Buffie1, Vanni Bucci2, Richard R Stein3
11] Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA [2] Lucille Castori Center for Microbes, Inflammation and Cancer, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA.
Nature
|October 23, 2014
概括
某些肠道细菌,如Clostridium scindens,可以防止Clostridium difficile感染. 恢复这些有益的微生物可以预防抗生素诱导的腹,并改善患者的治疗结果.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
背景情况:
- 哺乳动物肠道微生物提供了对病原体的殖民抵抗力.
- 抗生素破坏肠道微生物群,增加对诸如Clostridium difficile等感染的易感性.
- 困难杆菌感染 (CDI) 导致显著的发病率和死亡率,特别是在住院患者中.
研究的目的:
- 为了识别特定的肠道细菌赋予对CDI的抵抗力.
- 为了阐明CDI耐药性的体内机制.
- 发现潜在的基于微生物组的治疗方法来治疗CDI.
主要方法:
- 对小鼠进行抗生素治疗,以诱导明显的微生物群变化和不同的CDI易感性.
- 细菌种群损失与CDI发展的相关性分析.
- 数学建模和分析人类患者微生物群数据.
- 在体内给定了与耐药性相关的细菌.
主要成果:
- 不同的抗生素治疗导致小鼠的CDI易感性变化.
- 鉴定出Clostridium scindens是一种与CDI耐药性相关的关键细菌.
- 施用Clostridium scindens以二次胆酸依赖的方式增强了对CDI的抵抗力.
- 确定了常见于小鼠和人类的耐药性相关细菌.
结论:
- 克洛斯特里迪乌米斯辛登斯在防止Clostridium difficile感染方面发挥着重要作用.
- 杆菌的二次胆酸代谢对其保护作用至关重要.
- 包括益生菌在内的有针对性的干预措施可以恢复微生物组功能并预防CDI.
- 这些发现支持开发基于微生物组的诊断和治疗方法,以预防CDI.
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