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中国防痨杂志 ›› 2011, Vol. 33 ›› Issue (3): 163-165.

• 论著 • 上一篇    下一篇

结核分枝杆菌利福平依赖株与耐药株的耐药状况比较

杨彩娥 王琰 雷红 孙彬 孟祥红 董梅   

  1. 解放军第309医院检验科,北京,100091
  • 收稿日期:2010-09-03 出版日期:2011-03-20 发布日期:2012-03-16
  • 通信作者: 董梅 E-mail:dongmei0659@sina.com
  • 基金资助:

    国家自然科学基金资助项目(30970419)

Comparative analysis on the anti-tuberculosis drug resistance of the rifampin-dependent and -resistant strains of Mycobacterium tuberculosis

Yang Caie,Wang Yan,Lei Hong,Sun Bin,Meng Xianghong,Dong Mei   

  1. Department of Clinical Laboratory, 309th Hospital of PLA, Beijing 100091, China
  • Received:2010-09-03 Online:2011-03-20 Published:2012-03-16
  • Contact: Dong Mei E-mail:dongmei0659@sina.com

摘要: 目的 调查结核分枝杆菌利福平依赖株和耐药株对临床常用抗结核药物的耐药性差异,并探讨其临床意义。 方法 采用匡氏双相琼脂培养基分离痰结核分枝杆菌并作耐药性和依赖性测定。 结果依赖组菌株对8种药物的耐药率均高于耐药组菌株,2组菌株对链霉素(S)、乙胺丁醇(E)、对氨基水杨酸 (PAS)、阿米卡星(Am)的耐药率差异有统计学意义(P<0.05),对左氧氟沙星(Lfx)的耐药率差异有统计学意义(P<0.01);100%依赖株和98.6%耐药株为MDR株;依赖株和耐药株中XDR菌株的比例分别为14.6%和5.8%,P=0.05。 结论 结核分枝杆菌利福平依赖株均为MDR株,对一线和二线抗结核药物耐药率高,XDR株比例高,应予高度警惕和关注。

关键词: 分枝杆菌, 结核, 利福平, 微生物敏感性试验

Abstract: Objective To compare the drug resistance patterns of rifampin(R)-dependent Mycobacterium tuberculosis with R-resistant Mycobacterium tuberculosis. Methods The double-phase Kuang’s agar medium was used to culture and isolate M. tuberculosisfrom the patient’s sputum specimens. Patterns of drug resistance and rifampin-dependence were determined simultaneously.  Results The R-dependent M. tuberculosis strains exhibited higher rates of resistance to all the 8 anti-tuberculosis drugs than the R-resistant strains. The rates of resistance to streptomycin, ethambutol, paraminosalicylic acid and amikacin in these two groups of strains showed significant difference (P<0.05), and the resistance to levofloxacin had highly significant difference (P<0.01). 100% of R-dependent strains and 98.6% of R-resistant strains showed the resistance to multi-drugs. The ratio of extensively drug-resistant (XDR) isolates in the R-dependent strains and R-resistant strains were 14.6% and 5.8% (P=0.05), respectively.  Conclusion All the rifampin-dependent Mycobacterium tuberculosis strains were multi-drug resistant (MDR), which showed high drug resistance rate against first-line and second-line drugs and had more XDR strains.

Key words: Mycobacterium tuberculosis, rifampicin, microbial sensitivity test