Martin Anandi, Palomino Juan Carlos, Portaels Françoise
Mycobacteriology Unit, Institute of Tropical Medicine, Nationalestraat, 155, Antwerp B-2000, Belgium.
J Clin Microbiol. 2005 Apr;43(4):1612-6. doi: 10.1128/JCM.43.4.1612-1616.2005.
We have evaluated the performance of two rapid, low-cost methods for the detection of ofloxacin (OFX) resistance with 95 Mycobacterium tuberculosis isolates from countries with high multidrug-resistant tuberculosis endemicity. Results obtained by nitrate reductase and resazurin assays showed 100% agreement with those of the proportion method on 7H11 agar using 2 mug of OFX/ml. We confirmed the resistance of all isolates found to be resistant to OFX by the Mycobacterium Growth Indicator Tube system, and complete agreement among all methods was observed. Nitrate reductase and resazurin assays are rapid, simple, low-cost methods and might become inexpensive alternative procedures for rapid detection of OFX resistance in low-resource countries.
我们用来自耐多药结核病高发国家的95株结核分枝杆菌分离株,评估了两种快速、低成本检测氧氟沙星(OFX)耐药性方法的性能。通过硝酸还原酶和刃天青试验获得的结果与在含2μg/ml OFX的7H11琼脂上采用比例法获得的结果显示100%一致。我们通过分枝杆菌生长指示管系统确认了所有被发现对OFX耐药的分离株的耐药性,并且观察到所有方法之间完全一致。硝酸还原酶和刃天青试验是快速、简单、低成本的方法,可能会成为资源匮乏国家快速检测OFX耐药性的廉价替代方法。