检验医学 ›› 2014, Vol. 29 ›› Issue (11): 1136-1140.DOI: 10.3969/j.issn.1673-8640.2014.11.014

• 临床应用研究·论著 • 上一篇    下一篇

碳青霉烯类耐药克雷伯菌属细菌的药物敏感性及同源性分析

孙康德,陈旭,虞中敏,陈福祥   

  1. 上海交通大学医学院附属第九人民医院检验科,上海 200011
  • 收稿日期:2014-06-19 出版日期:2014-11-01 发布日期:2014-11-28
  • 作者简介:孙康德,男,1966年生,硕士,副主任技师,主要从事微生物检测和细菌耐药性的研究。 注:孙康德和陈旭对本研究具有同等贡献,并列为第一作者。

Drug suspectibility and homology analysis of carbapenem-resistant Klebsiella spp

SUN Kangde, CHEN Xu, YU Zhongmin, CHEN Fuxiang   

  1. Department of Clinical Laboratory, the Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
  • Received:2014-06-19 Online:2014-11-01 Published:2014-11-28
  • Contact: 陈福祥,联系电话:021-23271699-5376。孙康德和陈旭对本研究具有同等贡献,并列为第一作者。

摘要:

目的 探讨碳青霉烯类耐药的克雷伯菌属细菌的耐药机制,了解获得性碳青霉烯类耐药克雷伯菌属细菌流行状况,建立克雷伯菌属细菌的脉冲场凝胶电泳(PFGE)分型数据库,以便在发生医院暴发流行时快速溯源,为控制该类细菌的传播提供技术支撑。方法 收集碳青霉烯类耐药的克雷伯菌属细菌,用改良Hodge试验和聚合酶链反应(PCR)分别测定其表现型和基因型;用PFGE对其进行同源性分析。结果 碳青霉烯类耐药的克雷伯菌属细菌的耐药机制以产碳青霉烯酶(KPC)为主,PFGE分析的8株肺炎克雷伯菌可分成A、B两种PFGE型,其中A型4株、B型4株。结论 产KPC是本院克雷伯菌属细菌耐碳青霉烯类抗菌药物的主要原因,应重视医院细菌耐药性监测及医院感染的监控。

关键词: 克雷伯菌属, 碳青霉烯类药物, 改良Hodge试验, 聚合酶链反应, 脉冲场凝胶电泳

Abstract:

Objective To investigate the resistance mechanism and epidemiology of carbapenem-resistant Klebsiella spp and to establish the pulsed-field gel electrophoresis(PFGE) typing database of carbapenem-resistant Klebsiella spp in order to provide the reference for rapidly source-tracking and controlling the bacterium spread at the outbreak of nosocomial infection. Methods Carbapenem-resistant Klebsiella spp.were collectedand the phenotypic and genetic features were detected by modified Hodge test and polymerase chain reaction(PCR), respectively. PFGE typing was performed for homology analysis. Results The main resistance mechanism of carbapenem-resistant Klebsiella spp. was Klebsiella pneumoniae carbapenemase(KPC)-producing, and there were 2 genotypes by PFGE typing, including genotype A(4 isolates) and genotype B(4 isolates). Conclusions KPC-producing is the main reason for carbapenem-resistant Klebsiella spp. in the hospital, and it is necessary to monitor the resistance and to strengthen the infection control.

Key words: Carbapenem, Modified Hodge test, Polymerase chain reaction, Pulsed-field gel electrophoresis

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