检验医学 ›› 2022, Vol. 37 ›› Issue (2): 146-149.DOI: 10.3969/j.issn.1673-8640.2022.02.010

• 临床应用研究·论著 • 上一篇    下一篇

河南地区少见CRE耐药性分析及碳青霉烯酶初筛实验的临床应用

孙英, 李轶, 闫文娟, 荆楠, 马冰   

  1. 河南省直第三人民医院检验科,河南 郑州 450000
  • 收稿日期:2020-10-23 修回日期:2021-01-23 出版日期:2022-02-28 发布日期:2022-03-15
  • 作者简介:孙 英,女,1983年生,硕士,主管检验师,主要从事临床微生物检验工作。

Analysis of drug resistance of rare CRE and clinical application of carbapenem screening test in Henan

SUN Ying, LI Yi, YAN Wenjuan, JING Nan, MA Bing   

  1. Department of Clinical Laboratory,Henan No.3 Provincial People's Hospital,Zhengzhou 450000,Henan,China
  • Received:2020-10-23 Revised:2021-01-23 Online:2022-02-28 Published:2022-03-15

摘要:

目的 了解河南省直第三人民医院少见碳青霉烯类耐药肠杆菌科细菌(CRE)检出情况及耐药特点,探讨新的CRE酶型初筛实验的临床应用,为临床合理使用抗菌药物提供依据。方法 收集2019年分离自临床样本的非重复少见CRE,分析其检出情况及体外药物敏感性试验结果。从中随机选择22株,采用乙二胺四乙酸(EDTA)联合3-氨基苯硼酸(APBA)碳青霉烯酶抑制实验和胶体金免疫层析法检测其碳青霉烯酶酶型。结果 共检出1 111株CRE,其中阴沟肠杆菌49株(15.4%),产酸克雷伯菌14株(19.2%)、枸橼酸杆菌12株(13.8%)。CRE对亚胺培南的耐药率均为100%。肠杆菌属、产酸克雷伯菌、枸橼酸杆菌属对替加环素、多黏菌素B均敏感,对多黏菌素B及替加环素天然耐药的变形杆菌属和普罗威登斯菌属对氨曲南的耐药率分别为5.3%和14.3%。随机选择的22株CRE中检出NDM型金属酶13株、KPC型丝氨酸酶3株、OXA型丝氨酸酶1株、KPC+IMP+NDM型1株、KPC+NDM型1株。结论 河南地区CRE耐药形势严峻,应及时监测,并根据药物敏感性试验结果合理用药。少见CRE产酶类型多样,应合理优化碳青霉烯酶初筛实验,为临床精准用药提供参考。

关键词: 碳青霉烯类耐药肠杆菌科细菌, 耐药性, 碳青霉烯酶抑制试验, 胶体金免疫层析法

Abstract:

Objective To investigate the determination and drug resistance characteristics of rare carbapenem-resistant Enterobacteriaceae(CRE)in Henan No.3 Provincial People's Hospital,to investigate the clinical application of CRE enzyme screening test,and to provide a reference for rational clinical use of antibiotics. Methods The non-repetitive rare CRE isolated in 2019 were collected,and the results of drug resistance sensitivity test in vitro were collected. There were 22 isolates randomly collected,and the carbapenem-producing enzyme patterns of 22 isolates were determined by ethylenediaminetetraacetic acid(EDTA),3-aminophenylboric acid(APBA) carbapenemase inhibition test and colloidal gold immunochromatography. Results A total of 1 111 isolates of CRE were determined in 2019,which included 49 isolates of Enterobacter cloacae(15.4%),14 isolates of Klebsiella acidogenes(19.2%) and 12 isolates of Citrobacter(13.8%). The drug resistance rate of imipenem was 100%. Enterobacter,Klebsiella acidogenes and Citrobacter were sensitive to tigecycline and polymyxin B. The drug resistance rates of Proteus and Providencia which were naturally resistant to polymyxin B and tigecycline were 5.3% and 14.3%,respectively. Totally,13 isolates of NDM type metalloenzyme,3 isolates of KPC type serinase,1 isolate of OXA type serinase,1 isolate of KPC+IMP+NDM type and 1 isolate of KPC+NDM type were determined in the 22 isolates of CRE. Conclusions The situation of drug resistance of CRE in Henan is serious,and it should be monitored in time and used antibiotics reasonably according to the results of drug resistance sensitivity test. The carbapenem screening test should be optimized to provide a reference for the accurate use of drugs in CRE.

Key words: Carbapenem-resistant Enterobacteriaceae, Drug resistance, Carbapenemase inhibition test, Colloidal gold immunochromatography

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