染色体相关的Mycobacterium abscessus感染分离物:饮用水的作用
Rachel M Thomson1,2, Nicole Wheeler3,4, Rebecca E Stockwell5,6
1The University of Queensland Faculty of Medicine, Greenslopes Clinical School, Brisbane, Queensland, Australia.
American journal of respiratory and critical care medicine
|March 12, 2025
概括
饮用水可能会传播Mycobacterium (MABS) 感染. 这项研究在饮用水源中发现了MABS,将其与临床隔离物联系起来,并建议用水作为潜在的感染储备.
科学领域:
- 微生物学 微生物学
- 环境健康 环境健康
- 基因组学就是基因组学.
背景情况:
- 菌根杆菌 (MABS) 群的细菌会在患有慢性肺部疾病的个体中引起严重的肺部感染.
- 了解MABS的传播至关重要,主要的循环克隆 (DCC) 表明潜在的人与人传播.
研究的目的:
- 研究饮用水作为MABS的储存和传播载体的作用.
- 分析来自临床和水源的MABS分离物的遗传相关性.
主要方法:
- 澳大利亚昆士兰州的呼吸道 (n=231) 和饮用水 (n=58) 样本中289个MABS分离物的全基因组测序.
- 确定主要的循环克隆 (DCC) 和遗传学分析.
- 全基因组分析以确定特定的基因丰富,如抗铜基因.
主要成果:
- 近一半 (49.8%) 的MABS分离物属于已知的DCC,其中30个分离物在DCC5.5中形成一个独特的类.
- 与水相关的DCC5基因组显示了抗铜基因的丰富.
- 在基因相似的临床和水MABS分离物之间发现了四种潜在的流行病学联系.
结论:
- 饮用水是MABS的重要储备.
- 饮用水中的MABS可能充当载体,有助于人类感染链.
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