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中国防痨杂志 ›› 2007, Vol. 29 ›› Issue (6): 508-510.

• 论著 • 上一篇    下一篇

应用PCR-SSCP技术检测痰中结核分枝杆菌katG、rpoB、embB基因突变的研究

朱敏1;李锋1;盛国平2;范玉美1;   

  1. 1.浙江省中西医结合医院结核病治疗中心 杭州 310003;2.浙江大学医学院附属第一医院传染科 杭州 310003;
  • 出版日期:2007-06-10 发布日期:2007-11-03

Detection of the mutations of katG,rpoB and embB Genes in Mycobacterium tuberculosis from sputum specimens with PCR-SSCP technique

Zhu Min1,Li Feng,Sheng Guoping,et al.   

  1. 1.The Hospital of Integrated Traditional Chinese and Western Medicine of Zhejiang Province,Hangzhou 310003,China
  • Online:2007-06-10 Published:2007-11-03

摘要: 目的应用PCR-SSCP技术检测痰样本中结核分枝杆菌katG、rpoB、embB基因突变,探索其临床应用价值。方法以结核分枝杆菌标准株H37RV为对照,应用套式PCR扩增目的基因,并使用SSCP技术直接检测100例耐药患者和10例敏感患者痰样本中结核分枝杆菌katG、rpoB、embB基因突变并进行基因测序,将SSCP结果及测序结果与细菌培养药敏结果进行比较分析。结果PCR-SSCP直接检测痰样本中的结核分枝杆菌katG基因突变的敏感性和特异性分别是55.9%和70.0%,rpoB为76.0%和90.0%,embB为46.4%和60.0%。结论PCR-SSCP操作快速、简单,敏感性和特异性较高,可用来直接检测临床痰样本中结核分枝杆菌katG、rpoB、embB基因突变。

关键词: 分枝杆菌,结核, 突变, 聚合酶链反应

Abstract: Objective To detect the mutations of katG,rpoB and embB genes in Mycobacterium tuberculosis(MTB) from sputum specimens by PCR-SSCP method,and to evaluate the clinical value of this method.Methods 110 MTB isolates from sputum specimens were detected by PCR-SSCP and conventional drug susceptibility testing.The sequences of katG,rpoB and embB were also analyzed.Results The sensitivities of mutations of katG,rpoB and embB genes analyzed by PCR-SSCP were 55.9%,76.0% and 46.4%,respectively.Their specificities were 70.0%,90.0% and 60.0%,respectively.Conclusions PCR-SSCP technique is a rapid,simple,high sensitive and strongly specific method for detection of mutations of katG,rpoB and embB genes in MTB from sputum specimens.

Key words: Mycobacterium tuberculosis, Mutation, PCR