在尼尔吉里斯地区,印度南部,从尿路感染中分离的多药耐药大肠杆菌中发现生物膜的发生率
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Updated: Jul 26, 2025

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An In Vitro Bladder Model of Catheter-Associated Urinary Tract Infection
Published on: June 24, 2025
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A P Cardiliya1, M J N Chandrasekar2, M J Nanjan3
1Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty Nilgiris, Tamil Nadu, 643001, India.
概括
多药耐药性泌尿病原菌大肠杆菌 (MDRUPEC) 菌株形成生物膜,导致持续性尿路感染 (UTI). 这些生物膜对常见的抗生素表现出耐药性,但对 imipenem 和 meropenem 敏感.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 耐多药性尿路病原体大肠杆菌 (MDRUPEC) 是导致尿路感染 (UTI) 复发和复杂的重要原因.
- 大肠杆菌形成生物膜的能力是导致多药性耐药性和逃避宿主免疫反应的主要机制.
- 了解抗微生物耐药性和生物膜形成之间的联系对于开发有效的尿路感染治疗策略至关重要.
研究的目的:
- 调查从尿样中分离的多药耐药大肠杆菌菌株中生物膜形成的流行情况.
- 为了确定这些产生生物膜的MDRUPEC菌株的抗微生物敏感性模式.
主要方法:
- 对尿样进行了横截面研究,以确定大肠杆菌和评估多药性耐药性.
- 在MDRUPEC分离物中检测到体外生物膜的产生.
- 对生物膜分离物进行了抗微生物敏感性测试,并使用VITEK R2 Compact和16S rRNA基因测序进行了确认.
主要成果:
- 大肠杆菌导致了29.34%的尿路感染,其中23.92%的这些分离物是多药耐药的.
- 在MDRUPEC分离物中,36.06%是有力的生物膜生产者.
- 大肠杆菌生物膜对几种常见的尿路感染抗生素具有耐药性,但对伊米和美罗仍然敏感. 生物膜生产者表现出运动性和血液凝结.
结论:
- 从尿路感染中分离出的相当一部分多药耐药的大肠杆菌菌株能够形成生物膜.
- 这些大肠杆菌生物膜对广泛的常用抗生素具有耐药性,这突显了尿路感染治疗的挑战.
- 伊米和美罗对大肠杆菌生物膜具有强烈的活性,这表明它们可能成为生物膜相关性尿路感染的替代治疗选择.
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