检验医学 ›› 2012, Vol. 27 ›› Issue (11): 908-912.

• 微生物学检验论著 • 上一篇    下一篇

非结核分枝杆菌菌种ITS-PCR测序鉴定法与表型鉴定法对比观察

桂静,王峰,李金莉   

  1. 广东省深圳市慢性病防治中心病原检验科,广东 深圳 518020
  • 收稿日期:2012-09-10 修回日期:2012-10-09 出版日期:2012-11-30 发布日期:2012-11-14
  • 作者简介:桂静,女,1979年生,硕士,主管技师,主要从事分枝杆菌临床检验工作。

Contrast observation of ITS-PCR identification and phenotypic identification for nontuberculous Mycobacterium

  1. Department of Pathogenic Laboratory,Shenzhen Center for Chronic Disease Control,Guangdong Shenzhen 518020,China
  • Received:2012-09-10 Revised:2012-10-09 Online:2012-11-30 Published:2012-11-14

摘要: 目的 评价16S~23S rRNA基因转录间隔区聚合酶链反应(ITS-PCR)在非结核分枝杆菌(NTM)菌种鉴定中的临床价值。方法 采用ITS-PCR鉴定随机抽取的80株NTM,应用生长特性鉴定试验及鉴定性药物敏感性试验鉴定其表型特征,将3种鉴定方法所示结果进行对比分析。结果 80株NTM中,鸟-胞分枝杆菌复合群(MAC)与脓肿分枝杆菌共占85%,运用ITS-PCR可将脓肿分枝杆菌、堪萨分枝杆菌、偶发分枝杆菌、苏尔加分枝杆菌准确鉴定,与生长特性鉴定试验及鉴定性药物敏感性试验结果基本符合;MAC采用3种方法鉴定其结果符合率存在偏差。结论 NTMITS-PCR鉴定法与表型鉴定法相结合更适合临床应用。

关键词: 非结核分枝杆菌, 基因转录间隔区聚合酶链反应, 生长特性鉴定试验, 药物敏感性试验

Abstract: Objective To evaluate the clinical significance of 16S-23S rRNA intergenic transcribed spacer-polymerase chain reaction(ITS-PCR)identification for nontuberculous Mycobacterium(NTM). Methods A total of 80 NTM identified by ITS-PCR were randomly selected. Phenotypic characteristics of NTM were identified by growth characterization test and drug sensitivity test.The results for the 3 identification methods were analyzed contrastively. Results The proportion of Mycobacterium avium complex(MAC) and Mycobacterium abscessus was 85%.Mycobacterium abscessus,Mycobacterium kansasii,Mycobacterium fortuitum and Mycobacterium szulgai were identified accurately by ITS-PCR.The results were consistent among the results of growth characterization test,drug sensitivity test and ITS-PCR except that of MAC. Conclusions The combination of ITS-PCR with the phenotypic identification for NTM is suitable to the clinical application.

Key words: Nontuberculous Mycobacterium, Intergenic transcribed spacer-polymerase chain reaction, Growth characterization test, Drug sensitivity test