检验医学 ›› 2013, Vol. 28 ›› Issue (12): 1102-1105.DOI: 10.3969/j.issn.1673-8640.2013.12.010

• 临床应用研究.论著 • 上一篇    下一篇

尿路感染大肠埃希菌耐药特点与种系分型和遗传相关性分析

郑齐锶1,曹小利1,周爱平2,张之烽1,沈翰1,张葵1   

  1. 1.南京大学附属鼓楼医院检验科,江苏 南京 210008;2.南京大学附属鼓楼医院医务处,江苏 南京 210008
  • 出版日期:2013-12-01 发布日期:2013-12-20
  • 通讯作者: 张葵,联系电话:025-83105555-60666。
  • 作者简介:郑齐锶,男,1988年生,学士,技师,主要从事临床微生物检验工作。
  • 基金资助:

    南京市医学科技发展资金资助项目(LE318)

Analysis on the resistant characterization, phylogenetic grouping and genetic relatedness of Escherichia coli in urinary tract infection

ZHENG Qisi1, CAO Xiaoli1, ZHOU Aiping2, ZHANG Zhifeng1, SHEN Han1, ZHANG Kui1.   

  1. 1. Department of Clinical Laboratory, Drum Tower Hospital, Nanjing University, Jiangsu Nanjing 210008, China;2.Department of Medical Service, Drum Tower Hospital, Nanjing University, Jiangsu Nanjing 210008, China
  • Online:2013-12-01 Published:2013-12-20

摘要:

目的 分析尿路感染大肠埃希菌的耐药特点、种系分型和遗传相关性,并对比其在医院和社区感染中的差异。方法 对2010年非重复分离185株尿路感染大肠埃希菌进行敏感性测定、超广谱β-内酰胺酶(ESBLs)筛查、种系分型、同源性及统计学分析。结果 细菌对多种药物的耐药率>49.0%。185株细菌均有很大的遗传多样性,产酶率为78.4%。D型大肠埃希菌最为常见(49.7%),其ESBLs的产生率与头孢噻肟等的耐药性相关(P<0.05)。上述各因子在医院和社区感染菌株中差异无统计学意义(P>0.05)。结论 本研究尿路感染主要由D型大肠埃希菌引起,这些细菌呈遗传多样性,高产ESBLs,对多种抗菌药物耐药。

关键词: 大肠埃希菌, 尿路感染, 种系分型, 遗传相关性

Abstract:

Objective  To analyze the resistant characterization,phylogenetic grouping and genetic relatedness of Escherichia coli in urinary tract infection, and compare the differences of these factors among the hospital and community infections. Methods  A total of 185 non-duplicate Escherichia coli in urinary tract infection were analyzed for sensitivities, extended spectrum beta-lactamases (ESBLs) screening, phylogenetic grouping and genetic relatedness, and the results were analyzed statistically. Results  The resistance rates to multiple antibiotics were>49.0%. A total of 185 isolates displayed a high diversity, and the prevalence of ESBLs was 78.4%. Phylogroup D Escherichia coli was the most frequent(49.7%), and the correlation between the production rate of ESBLs and resistance to cefotaxime was observed (P<0.05). Additionally, there was no statistical significant on the distribution of the factors between the hospital and community infections (P>0.05). Conclusions  Urinary tract infection is mainly caused by the phylogroup D Escherichia coli which displays a high diversity of genetic relatedness. High-produced ESBLs are multiple resistant to antibiotics.

Key words: Escherichia coli, Urinary tract infection, Phylogenetic grouping, Genetic relatedness

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