Email Alert | RSS    帮助

中国防痨杂志 ›› 2009, Vol. 31 ›› Issue (2): 80-84.

• 论著 • 上一篇    下一篇

分枝杆菌散在重复单位对结核分枝杆菌分型的研究

郭艳玲1;刘洋1;王甦民2;李传友1;宋长兴1   

  1. 1.北京市结核病胸部肿瘤研究所 北京 101149;2.北京结核病控制研究所 北京 100035
  • 出版日期:2009-02-10 发布日期:2011-11-03

The application of mycobacterial interspersed repetitive unit(MIRU) in M.tuberculosis genotying

Guo Yanling1, Liu Yang,Wang Sumin, Li Chuanyou, Song Changxing   

  1. 1.Beijing tuberculosis and thoracic tumor research institute, Beijing 101149, China; 2.Beijing institute of tuberculosis control, Beijing 100035
  • Online:2009-02-10 Published:2011-11-03

摘要: 目的 评价分枝杆菌散在重复单位(MIRU)分型方法在结核病流行病学上的应用,探讨该方法的应用前景。方法采用MIRU分型对158株结核分枝杆菌进行基因分型,这些菌株均已进行IS6110-RFLP分型。结果MIRU分型结果产生只需1d。158株结核分枝杆菌共产生105个类型,其中65个为独特类型。在MIRU 的12个区中,重复区4、 10、26、40具有较高的多态性。用Hunter-Gaston Index(HGI)对2种方法进行评价,IS6110-RFLP的分辨指数为99.4%,MIRU技术的分辨指数为97.8%。当IS6110拷贝数小于等于10个时,IS6110-RFLP的分辨指数为98%,MIRU的分辨指数达到98.2%。结论MIRU 分型方法具有快速、简便、分辨力较高的特点,便于普及,可在结核病分子流行病学研究中发挥重要作用。

关键词: 分枝杆菌,结核, 分枝杆菌散在重复单位, IS6110, RFLP

Abstract: Objective To assess the application of mycobacterial interspersed repetitive unit(MIRU) in the epidemiology of tuberculosis, and to discuss its prospect. Method158 Mycobacterium tuberculosis isolates that had been typed by IS6110-RFLP were subjected to MIRU. ResultsThe Results were obtained by MIRU within 1 day. 105 patterns were produced, in which 65 patterns were unique. In MIRU loci, there were four loci(loci 4,10,26,40) with higher diversity. MIRU typing provided discrimination (Hunter-Gaston Index [HGI] of 0.978) compared with the IS6110 RFLP method (HGI=0.994). For those strains lower than 10 copies, MIRU typing provided discrimination (HGI=0.982) comparable to that of the RFLP method (HGI=0.98). ConclusionMIRU typing, which is simple, rapid, and easy to popularize, would exert important function in the epidemiological investigation of tuberculosis.

Key words: Mycobacterium tuberculosis, MIRU, IS6110, RFLP