在阿根廷从腹的儿童中分离出的EPEC和STEC菌株的检测
Daniel Fernández Fellenz1, Julia M Ruiz1, Analía I Etcheverría1
1Laboratorio de Inmunoquímica y Biotecnología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, CICPBA, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Buenos Aires, Argentina.
Revista Argentina de microbiologia
|September 14, 2024
概括
这项研究在使用PCR的儿科直肠拭子中检测到产生Shiga毒素的埃斯赫里基亚大肠杆菌 (STEC) 和肠病原性大肠杆菌 (EPEC). 鉴定了病毒性因素和血清组,突出了潜在的人类疾病风险.
科学领域:
- 微生物学 微生物学
- 儿童传染病 儿童传染病
- 分子诊断学 分子诊断
背景情况:
- 肠病原性大肠杆菌 (EPEC) 和产生石毒素的大肠杆菌 (STEC) 是儿童腹疾病的重要原因.
- 准确检测和表征这些病原体对于了解传播和疾病病原体至关重要.
研究的目的:
- 检测和描述儿科患者的直肠抽样中的EPEC和STEC菌株.
- 调查与EPEC和STEC相关的特定毒性因子和血清组的患病率.
主要方法:
- 聚合酶链反应 (PCR) 用于检测EPEC和STEC.
- 进一步分析了STEC分离物的毒性基因 (stx1,stx2,eae,saa,ehxA).
- 测试了EPEC菌株的bfpA,并使用凝结试验确定了血清组;整体 (Int1,Int2) 也被评估.
主要成果:
- 在68%的样本中发现了大肠杆菌.
- STEC和EPEC分别占大肠杆菌分离物的18.8%和16.3%.
- 确定了关键的STEC血清组O145和EPEC血清组O130,O113和O157;没有EPEC菌株携带bfpA或1和2类整体.
结论:
- 该研究确定了EPEC和STEC菌株在儿科患者中具有显著的毒性概况.
- 与人类疾病相关的特定血清组普遍存在,这强调了这些发现对公共卫生的相关性.
- 在EPEC菌株中缺乏bfpA和整合子,可以了解它们的特定致病机制.
关键词:
阿根廷阿根廷阿根廷阿根廷阿根廷.孩子 孩子 孩子 孩子这导致腹,腹.腹 腹 腹 腹 腹 腹 腹 腹 腹EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC EPEC孩子们的孩子们史蒂克 (STEC) 是一个国家.
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