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沧州市结核分枝杆菌间隔区寡核苷酸分型研究
曹新瑞 1, 李雅楠 2, 高会霞 2, 张志 2, 戴二黑 2△
2016, 44 (11):
1391-1393.
doi: 10.11958/20160071
摘要
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Objective To identify the genetic polymorphism and molecular epidemiological characteristics of
Mycobacterium tuberculosis (TB) clinical isolates in Cangzhou, and explore the association between genotypes and drug
resistance phenotypes. Methods Mycobacterium tuberculosis isolates were collected from TB patients treated in the
Cangzhou Infectious Disease Hospital, and corresponding clinical data were also collected. The genomic DNA was extracted.
Spacer oligonucleotide typing (spoligotyping) was applied to genotype the isolates. Drug susceptibility testing of first- line
anti- TB drugs (streptomycin, isoniazid, rifampin, ethambutol) was performed using the BACTECTMMGITTM960 liquid
medium. Cluster analysis was done by BioNumerics 5.0. Data was analyzed by Graphpad Prism 5.0 software. Results Of
the 154 patients, 109 were male and 45 were female. And 121 patients were treated for the first time, 33 were retreatment, 34
had smoking history, 12 were complicated with diabetes mellitus. Fourty-eight strains (31.2%) were resistant to at least one
of streptomycin, inoniazid, rifampicin and ethambutol. Initial drug resistance rate was 22.3% and acquired drug resistance
rate was 63.6%. The drug resistance rate was significantly higher in retreatment patients than that of new cases. The Beijing
family strain accounted for 91.6% of all isolates and the non- Beijing family strain accounted for 8.4% . There were no
significant differences in gender, treatment history, smoking history and diabetes history between patients with the Beijing
genotype and patients with non- Beijing genotype. Conclusion Mycobacterium tuberculosis in Cangzhou exhibits high
genetic diversity. The Beijing genotype is the predominant no association with drug resistance.
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