Analysis on Pyrazinamide Drug Susceptibility of Mycobacterium Tuberculosis Clinical Strains
10.3969/j.issn.1671-7414.2017.03.013
- VernacularTitle:结核分枝杆菌临床分离株对吡嗪酰胺的药物敏感性分析
- Author:
Jie ZHANG
;
Hongwei QI
;
Beichuan DING
;
Min WANG
;
Wenqing WU
- Keywords:
Mycobacterium tuberculosis;
pyrazinamide;
resistance
- From:
Journal of Modern Laboratory Medicine
2017;32(3):49-51
- CountryChina
- Language:Chinese
-
Abstract:
Objective To research the pyrazinamide drug susceptibility of Mycohacterium tuberculosis,and provide reference for clinical medication and prevention.Methods Bactec MGIT 960 system was used to test the resistance of isoniazid,rifam picin,ethambutol,streptomycin and pyrazinamide for 153 strains of Mycobacterium tuberculosis.Results Of 153 Mycobacterium tuberculosis,34 were resistant to PZA,and the resistant rate was 22.2 ％.There was no PZA single drug resistance.A mong patients with and without INH resistance,RFP resistance,EMB resistance and Sm resistance,the proportions of PZA resistance were respectively 40.5 ％ (34/84) vs 0％(0/69),47.5％(29/61) vs 5.4％(5/92),75％(6/8) vs 19.3％(28/145),53.1％ (26/49) vs 7.7％ (8/104).Among the 54 multidrug-resistant (MDR) strains 53.7％ were resistant to PZA,which was significantly higher than 5.1 ％ (5/99) among the nonMDR-TB strains (x2 =47.854,P＜0.05).In multivariate logistic analysis,resistance to Sm (OR=0.270,95％CI:0.091～0.802) and MDR-TB (OR=0.281,95％CI:0.087～0.911) were risk factors to PZA resistance.Conclusion The PZA resistance rate among MDR-TB isolates was high.PZA resistance would be associated with SM resistance and MDR-TB.The drug susceptibility test for PZA is very important to MDR-TB patients.
