基因组调查揭示了在农村环境水体内产生高风险ESBL的Enterobacteriaceae
P S Seethalakshmi1, Vishnu Prasad Nair Ru1, Anushara Prabhakaran1
1Department of Microbiology, Pondicherry University, Puducherry 605014, India.
Current research in microbial sciences
|January 26, 2024
概括
抗菌素耐药性 (AMR) 是一个全球性的威胁. 这项研究检测到来自印度的细菌中的AMR基因,包括新型mcr-9基因.
科学领域:
- 环境微生物学环境微生物学
- 基因组学就是基因组学.
- 公共卫生 公共卫生
背景情况:
- 抗菌素耐药性 (AMR) 是一个日益增长的全球健康问题.
- 广泛的抗微生物药物使用推动了细菌中AMR的出现.
- AMR基因通过等离子体和转子体等遗传元素传播.
研究的目的:
- 调查印度普杜切里市的Thiruvandarkoil湖的AMR流行率和遗传决定因素.
- 在细菌分离物中识别特定的耐药基因和机制.
- 报告印度首次环境中检测到mcr-9的情况.
主要方法:
- 基于培养的水样微生物查.
- 耐药细菌分离物的全基因组测序.
- 在基因组数据的分析中识别AMR基因.
主要成果:
- 鉴定了产生各种β-乳酸酶的抗素分离物 (blaVEB-6,blaSHV-12,blaACT-16,blaCTX-M).
- 检测到对重金属,洗剂和毒性因子的共抗性.
- 在印度报告了第一个mcr-9阳性的Enterobacter hormaechei环境分离物.
结论:
- 蒂鲁万达尔科伊尔湖含有多种AMR决定因素,构成潜在的环境风险.
- mcr-9的存在凸显了印度迫切需要对环境AMR监测的需求.
- 政策制定者和研究人员应优先监测水生生态系统中的AMR传播.
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