无症状婴儿的肠道微生物群的克洛斯特里迪奥伊德困难度依赖的变化
Aleksander Mahnic1,2, Jana Lozar Krivec3,4, Darja Paro-Panjan3,4
1Department for Microbiological Research, National Laboratory of Health, Environment and Food, Maribor, Slovenia. aleksander.mahnic@nlzoh.si.
Gut pathogens
|April 4, 2025
概括
在婴儿中无症状的Clostridioides difficile携带不会改变肠道微生物群,除非病原体水平很高. 较高的C.difficile表明失生症,以较低的多样性和增加的Escherichia为标志.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 儿科 儿科 儿科
背景情况:
- 无症状的Clostridioides difficile携带在婴儿中很常见 (约. 40%). 在这个问题上.
- 婴儿托儿车提供了一个研究肠道微生物群的模型,没有疾病的混.
- 婴儿时期的抗生素暴露是影响C. difficile殖民的潜在因素.
研究的目的:
- 在接受抗生素治疗一年后,对无症状婴儿的肠道微生物组改变进行调查.
- 评估Clostridioides difficile存在/度和肠道微生物群结构之间的关系.
- 为了确定与C. difficile殖民相关的宿主特定因素.
主要方法:
- 对于细菌肠道社区结构的16S rRNA amplicon测序.
- 数字PCR用于量化C. difficile度和tcdB基因存在.
- 广泛的元数据与微生物数据一起进行分析.
主要成果:
- 在36.8%的婴儿中检测到C. difficile;在10.5%的婴儿中检测到tcdB基因.
- 较高的C. difficile负载与微生物多样性减少和Escherichia增加相关.
- 没有与单独的C. difficile殖民或tcdB基因存在相关的显著微生物群变化.
结论:
- 无症状的C. difficile携带只会在病原体度高时影响肠道微生物群.
- 较高的C. difficile增殖表明,婴儿的肠道微生物群中存在潜在的异位生物.
- 失生症的特点是α多样性减少和Escherichia丰度增加.
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