来自食物和人类来源的Pseudomonas aeruginosa的流行率和基因型鉴定
Walid S Mousa1, Eman E Abdeen2, Hanem F El-Gendy3
1Department of Medicine and Infectious Diseases, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, 32958, Egypt.
Scientific reports
|February 17, 2026
概括
这项研究在埃及的人类,水和食品样本中确定了Pseudomonas aeruginosa,揭示了高抗生素耐药性和毒性基因的存在. 这些发现凸显了受污染的食物来源对公共健康的潜在风险.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 公共卫生 公共卫生
背景情况:
- Pseudomonas aeruginosa 是 nosocomial 和食源性感染的重要原因.
- 了解P. aeruginosa的分子流行病学和抗生素耐药性对于公共卫生至关重要.
- 这项研究调查了P. aeruginosa在埃及的各种环境和食物来源.
研究的目的:
- 从人类,水和食物标本中分离P. aeruginosa的分子基因定型.
- 评估抗生素耐药性模式,并确定毒性和耐药性基因.
- 评估临床P. aeruginosa分离物的遗传多样性.
主要方法:
- 从人类,自来水,鱼沼,肉,碎肉,生牛奶和医院表面收集样本.
- 检测和隔离P. aeruginosa,然后进行抗生素敏感性测试.
- 聚合酶链反应 (PCR) 检测毒性 (toxA,exoS,oprL) 和耐药性基因 (ermB,pelA,blaTEM,tetA).
- 肠杆菌重复性基因间共识 (ERIC) -PCR用于临床分离物的基因定型.
主要成果:
- 在14.28%的样本中检测到P. aeruginosa,在人类 (26%) 和水/食物来源 (10-18%) 中的流行率更高.
- 对阿莫西西林 (100%),红素 (98%) 和塞弗拉丁 (90%) 观察到高耐药性. 对伊米尼姆 (96%) 和阿普拉米辛 (94%) 发现了高度敏感性.
- 病毒性基因 (toxA,exoS,oprL) 和耐药性基因 (ermB,pelA,blaTEM,tetA) 被成功放大.
- 在10个临床分离物中,ERIC-PCR发现了10个不同的模式,表明了遗传多样性.
结论:
- 在埃及,P. aeruginosa在各种来源中普遍存在,构成潜在的公共卫生风险,特别是通过食品污染.
- 抗生素耐药性的高率需要仔细监测和感染控制策略.
- 建议进行进一步的流行病学研究和全基因组测序,以了解传播动态.
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