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克莱布西拉肺炎物种综合体:从废水到环境
Ilse Verburg1,2, Lucia Hernández Leal1, Karola Waar3
1Wetsus, European Centre of Excellence for Sustainable Water Technology, 8900, CC, Leeuwarden, the Netherlands.
One health (Amsterdam, Netherlands)
|September 12, 2024
概括
废水通道有助于抗生素耐药的Klebsiella pneumoniae的传播. 基因分析显示,可转移的抗生素耐药性基因在临床环境中最为丰富,这表明等离子体含量是它们传播的关键.
科学领域:
- 微生物学 微生物学
- 环境科学 环境科学
- 公共卫生 公共卫生
背景情况:
- 肺炎Klebsiella是导致医院感染和抗生素耐药性的重要原因.
- 废水通道是致病细菌和抗菌素耐药性传播的潜在途径.
研究的目的:
- 调查废水在抗生素耐药Klebsiella pneumoniae亚种传播中的作用.
- 从各种来源分析K. pneumoniae的遗传关系和抗菌素耐药性概况.
主要方法:
- 来自医院,养老院,社区废水,废水处理厂和临床样本的185个K. pneumoniae分离物的全基因组测序.
- 对抗生素耐药性基因 (ARG),毒性基因和等离子体复制基因的分析.
主要成果:
- 来自不同来源的K. pneumoniae分离物在很大程度上是无关的,除了污水处理厂的流入和废水,这表明细菌在处理过程中存活.
- 可转移的ARG在患者和医院隔离物中最为普遍 (70%).
- 质粒含量,而不是数量,对ARG传播更为重要,具有与K. pneumoniae亚种相关的特定毒性基因和质粒复制体. 这是肺炎.
结论:
- 污水处理厂可以容纳并可能传播抗生素耐药的K. pneumoniae.
- 等离子体介导的基因转移在K. pneumoniae亚种中抗生素耐药性的传播中起着至关重要的作用.
- 特定的遗传元素,包括毒性因子和等离子体复制品,与来自患者来源的临床相关的K. pneumoniae亚种有关.
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