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Chinese Journal of Lung Diseases(Electronic Edition) ›› 2017, Vol. 10 ›› Issue (03): 304-308. doi: 10.3877/cma.j.issn.1674-6902.2017.03.013

Special Issue:

• Original Article • Previous Articles     Next Articles

Preliminary study on genotype of Mycobacterium tuberculosis in some areas of Xinjiang by the multiple locus VNTR analysis

Xinji Gong1, Yuehua Li2, Lidan Yao3, Mokomti Aynur·2, Nianqiang Liu2, Le Wang2, Jing Wang4,()   

  1. 1. Department of Respiratory Medicine, the First Affiliated Hospital of Xinjiang Medical University, Urumchi 830000 China
    2. Institute for Tuberculosis Control and Prevention, Centre for Disease Control and Prevention of Xinjiang Uygur Autonomously Region, Urumchi 830001 China
    3. Department of Critical Care Medicine, the First Affiliated Hospital of Xinjiang Medical University, Urumchi 830000 China
    4. Department of Geratology, the First Affiliated Hospital of Xinjiang Medical University, Urumchi 830000 China
  • Received:2016-04-30 Online:2017-06-20 Published:2017-06-20
  • Contact: Jing Wang
  • About author:
    Corresponding author: Wang Jing, Email:

Abstract:

Objective

To explore the multiple locus VNTR analysis (MLVA) of Mycobacterium tuberculosis.

Methods

It was selected that the data of the fifth TB epidemiological sampling survey in Xinjiang Uygur Autonomously Region from 2010 to 2011, and the genotyping was carried out by the classic 24 site method. The genetic clustering was analyzed by the BioNumerics5.0 database. The original strains of Mycobacterium tuberculosis, the annulus were dissolved and suspended bacterium in 400 μl TE, 80 ℃ 1 h inactivated, 12 000 r/min, the centrifugal 10 min, abandon supernatant, suspended bacterium in 600 μl TE again; multiple site tandem repeat sequence analysis.

Results

There were two genetic groups in Xinjiang: gene group Ⅰ and gene group Ⅱ, 66 strains in genetic group Ⅰ (66.7%), and 33 strains in gene strain Ⅱ (33.3%). gene growp I was Beijing genotype strains 65 different genotype from gene group of 66 strains of Mycobacterium tuberculosis Ⅰ, 2 strains of Mycobacterium tuberculosis belong to the same cluster, clusters rate was 1.5%, It was different that the gene group of Ⅱ 33 of Mycobacterium tuberculosis strain of MLVA pictures, clusters rate was 0.

Conclusion

Mycobacterium tuberculosis strains exist obvious gene polymorphism in Xinjiang, with the majority of Beijing genotype strains, and a certain proportion of strains are not Beijing genotype, we should strengthen the monitoring and management for major epidemic strains.

Key words: Tuberculosis, Mycobacterium tuberculosis, Multiple locus VNTR analysis, Gene polymorphism, Xinjiang areas

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