产KPC酶肺炎克雷伯菌9株的药敏试验结果分析  

Antimicrobial susceptibility of 9 strains of carbapenemase-producing Klebsiella pneumoniae

作　　者：靳颖[1] 王俊妨[1] 刘冀琴[1] 周鑫[1] 

机构地区：[1]武警后勤学院附属医院检验科,天津300162

出　　处：《中国感染与化疗杂志》2015年第3期257-259,共3页Chinese Journal of Infection and Chemotherapy

摘　　要：目的分析产KPC酶肺炎克雷伯菌的耐药性和基因型及对替加环素的敏感性,为临床治疗该类菌感染提供依据。方法收集2012年2月—2013年5月自临床科室分离的碳青霉烯类耐药肺炎克雷伯菌9株,采用VITEK2 Compact全自动微生物鉴定系统进行细菌鉴定及药敏试验,改良Hodge试验检测碳青霉烯酶,聚合酶链反应(PCR)法检测菌株的KPC酶基因型,E试验法检测替加环素对菌株的体外抗菌活性。结果所分离的9株肺炎克雷伯菌对所测试的19种抗菌药物均显耐药,7株改良Hodge试验阳性。9株肺炎克雷伯菌均扩增出KPC目的基因条带,均为KPC-2型基因。9株耐药菌对替加环素均敏感。结论产KPC酶肺炎克雷伯菌耐药形势严峻,替加环素作为新一代抗生素对其有良好的体外抗菌活性。Objective To analyze the resistant profile and genotypes ,as well as susceptibility to tigecycline in carbapenemase‐producing K lebsiella pneumoniae for better clinical management of such infections .Methods Nine strains of carbapenemase‐producing K .pneumoniae were isolated from clinical specimens during the period from February 2012 to May 2013 in our hospital .Bacterial identification and antimicrobial susceptibility testing were carried out with VITEK 2 Compact automatic microbiological assay systems .The phenotype of carbapenemase‐producing K . pneumoniae was detected by modified Hodges test .The genotype of carbapenemase was identified by PCR method .The susceptibility to tigecycline was tested by E‐test . Results All the 9 strains of carbapenemase‐producing K . pneumoniae were resistant to the 19 antibiotics tested .Modified Hodges test was positive for 7 strains （77 .8% ） .Target band of carbapenemase gene was identified in all the 9 strains of K . pneumoniae ,and all were confirmed as KPC‐2 gene .All the 9 strains were susceptible to tigecycline .Conclusions The resistance of carbapenemase‐producing K .pneumoniae is still serious .Tigecycline has shown good in vitro activity against such strains .

关 键 词：肺炎克雷伯菌 K PC酶 耐药性 替加环素 

分 类 号：R446.5[医药卫生—诊断学]