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作 者:陆俊梅[1] 王洁[1] 黄晓辰[1] 胡忠义[1] 崔振玲[1]
机构地区:[1]同济大学附属上海市肺科医院结核病诊疗中心上海市结核病(肺)重点实验室,200433
出 处:《中华预防医学杂志》2011年第1期21-25,共5页Chinese Journal of Preventive Medicine
基 金:基金项目:国家科技重大专项(2008ZX100034)03-02);教育部博士点新教师基金(20090072120049);上海市卫生局科研课题(2008067)
摘 要:目的 显微镜观察药物敏感性检测技术(MODS)在MTB痰涂阳标本(以下简称痰涂阳标本)直接药敏试验中的检测效果,评价其应用价值.方法 将MODS技术用于275份痰涂阳标本的直接药敏检测,每份标本同时检测MTB对链霉素、异烟肼、利福平、乙胺丁醇及左氧氟沙星、阿米卡星和卷曲霉素7个药物的敏感度,同时采用Bactec全自动快速结核菌培养系统(MGIT)960进行培养,培养阳性分离株继续进行MGIT 960药敏检测.将MODS药敏检测结果与MGIT 960药敏结果进行对比分析.结果 MODS检测痰涂阳标本中MTB的阳性率为85.45%(235/275),药敏检测时间中位数为18 d(5~39 d),链霉素、异烟肼、利福平、乙胺丁醇、左氧氟沙星、阿米卡星和卷曲霉素药敏检测结果与MGIT药敏结果符合率分别为90.21%(212/235)、88.09%(207/235)、93.62%(220/235)、87.23%(205/235)、92.34%(217/235)、88.51%(208/235)和86.81%(204/235);检测敏感度分别为83.33%(90/108)、85.11%(120/141)、90.74%(98/108)、85.71%(78/91)、86.73%(85/98)、76.92%(40/52)和77.08%(37/48);特异度分别为96.06%(122/127)、92.55%(87/94)、96.06%(122/127)、88.19%(127/144)、96.35%(132/137)、91.80%(168/183)和89.30%(167/187).结论 MODS技术直接检测痰涂阳标本中MTB对药物的敏感度具有快速、准确、价廉的优点,可作为痰涂阳标本直接药敏检测方法之一.Objective To evaluate microscopic observation drug susceptibility (MODS) for mycobacterium tuberculosis drug susceptibility in smear-positive sputum. Methods Drug susceptibility of mycobacterium tuberculosis in 275 smear-positive sputum samples collected from TB patients were detected directly by MODS. The susceptibility of seven antimicrobials including streptomycin, isoniazid, rifampicin,etbambutol, levofloxacin,amikacin and capromycin were detected MODS. At the same time the sputum sample were cultured in MGIT 960 tube and the positive isolates were tested for drug susceptibility by MGIT 960 system. The results of MODS were analyzed and compared with that of MGIT 960. Results Of 275 smearpositive sputum, MODS detected 235 (85.45%). Results of MODS were obtained in a median time of 18 days(5-39 d). For the 235 MODS-positive samples,the compliance rates of MODS to MGIT of 7 drugs were 90. 21% (212/235), 88.09% (207/235), 93. 62% (220/235), 87. 23% (205/235), 92. 34% (217/235), 88. 51% (208/235) and 86. 81% (204/235) respectively. The sensitivity of MODS method were 83. 33% (90/108) ,85.11% (120/141) ,90. 74% (98/108) ,85.71% (78/91) ,86. 73% (85/98),76. 92% (40/52) and 77.08% (37/48). The specificities of MODS method were 96.06% (122/127),92. 55% (87/94) ,96. 06% (122/127) ,88. 19% (127/144) ,96. 35% (132/137) ,91.80% (168/183) and 89. 30% (167/187) respectively. Conclusion MODS is an optimal alternative method for direct and rapid drug susceptibility of sputum with high accuracy in a timely and affordable way in resource-limited settings.
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