检验医学 ›› 2019, Vol. 34 ›› Issue (9): 812-814.DOI: 10.3969/j.issn.1673-8640.2019.09.010

• 临床应用研究?论著 • 上一篇    下一篇

刃天青还原法在鲍曼不动杆菌及铜绿假单胞菌多黏菌素B体外药物敏感性快速检测中的应用

吴兴龙1, 赵翔文1, 赵庆玲2   

  1. 1. 山东省兰陵县人民医院检验科,山东 兰陵 277799
    2. 山东省荣军总医院检验科,山东 济南 250013
  • 收稿日期:2019-01-02 出版日期:2019-09-30 发布日期:2019-09-29
  • 作者简介:null

    作者简介:吴兴龙,男,1976年生,学士,主管技师,主要从事临床微生物检测方法研究。

Application of resazurin reduction-based assay for the rapid detection of polymyxin B drug susceptibility in vitro in Acinetobacter baumannii and Pseudomonas aeruginosa

WU Xinglong1, ZHAO Xiangwen1, ZHAO Qingling2   

  1. 1. Department of Clinical Laboratory,the People's Hospital of Lanling County,Lanling 277799,Shandong,China
    2. Department of Clinical Laboratory,Shandong Rongjun General Hospital,Jinan 250013,Shandong,China
  • Received:2019-01-02 Online:2019-09-30 Published:2019-09-29

摘要:

目的 评价刃天青还原法应用于鲍曼不动杆菌和铜绿假单胞菌对多黏菌素B的药物敏感性试验的可行性。方法 收集112株鲍曼不动杆菌和铜绿假单胞菌临床分离株,分别采用刃天青还原法和微量肉汤稀释法进行多黏菌素B体外药物敏感性试验,以微量肉汤稀释法检测结果为标准,评价刃天青还原法在多黏菌素B体外药物敏感性试验中的性能。结果 以微量肉汤稀释法的检测结果为标准,刃天青还原法的准确性为98.2%(110/112),阳性检出率为100%(33/33)。所有耐药结果均在加入刃天青显色剂后60 min内被检出。结论 刃天青还原法用于鲍曼不动杆菌和铜绿假单胞菌对多黏菌素B的体外药物敏感性快速检测,具有检测速度快、准确性好、操作简便、成本低等优点,可在临床推广使用。

关键词: 刃天青还原法, 体外药物敏感性试验, 快速检测, 多黏菌素B

Abstract:

Objective To evaluate the feasibility of resazurin reduction-based assay for the rapid detection of polymyxin B drug susceptibility in vitro in Acinetobacter baumannii and Pseudomonas aeruginosa. Methods A total of 112 isolates of Acinetobacter baumannii and Pseudomonas aeruginosa were collected,and the polymyxin B drug susceptibility in vitro was performed by resazurin reduction-based assay and standard broth microdilution method. The performance of resazurin reduction-based assay was evaluated. Results Using broth microdilution method as standard,the accuracy and the positive detection rate of resazurin reduction-based assay were 98.2%(110/112) and 100%(33/33),respectively. All drug resistance results can be obtained within 60 min after adding resazurin. Conclusions Polymyxin B drug susceptibility in vitro in Acinetobacter baumannii and Pseudomonas aeruginosa is rapid,highly sensitive,specific,easy-to-perform and inexpensive,which could be applied in clinic widely.

Key words: Resazurin, Drug susceptibility test in vitro, Rapid detection, Polymyxin B

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