Multicenter laboratory validation of the BACTEC MGIT 960 technique for testing susceptibilities of Mycobacterium tuberculosis to classical second-line drugs and newer antimicrobials
- PMID: 16517840
- PMCID: PMC1393114
- DOI: 10.1128/JCM.44.3.688-692.2006
Multicenter laboratory validation of the BACTEC MGIT 960 technique for testing susceptibilities of Mycobacterium tuberculosis to classical second-line drugs and newer antimicrobials
Abstract
The BACTEC MGIT 960 system, a fully automated, nonradiometric, noninvasive system for detection and drug susceptibility testing of mycobacteria, was evaluated for the ability to test susceptibilities to second-line drugs. In this study, which was carried out in three phases (phase I, mostly susceptible strains; phase II, mostly resistant strains; phase III, final testing of the optimal drug concentrations found in phases I and II), we established the critical concentrations for seven drugs to be tested in the BACTEC MGIT 960 system compared to the BACTEC 460TB system. The critical concentrations for the seven drugs used in the MGIT 960 system are as follows: amikacin, 1.0 microg/ml; capreomycin, 2.5 microg/ml; ethionamide, 5.0 microg/ml; protionamide, 2.5 microg/ml; ofloxacin, 2.0 microg/ml; rifabutin, 0.5 microg/ml; linezolid, 1.0 microg/ml. Our results demonstrate that the BACTEC MGIT 960 system is an accurate method for rapid testing of the susceptibilities of Mycobacterium tuberculosis to second-line drugs.
References
-
- Balabanova, Y., M. Ruddy, J. Hubb, M. Yates, M. Malomanova, I. Fedorin, and F. Drobniewski. 2005. Multidrug-resistant tuberculosis in Russia: clinical characteristics, analysis of second-line drug resistance and development of standardized therapy. Eur. J. Clin. Microbiol. Infect. Dis. 24:136-139. - PubMed
-
- Goloubeva, V., M. Lecocq, P. Lassowsky, F. Matthys, F. Portaels, and I. Bastian. 2001. Evaluation of Mycobacteria Growth Indicator Tube for direct and indirect drug susceptibility testing of Mycobacterium tuberculosis from respiratory specimens in a Siberian prison hospital. J. Clin. Microbiol. 39:1501-1505. - PMC - PubMed
-
- Huang, T.-S., H.-Z. Tu, S. S.-J. Lee, W.-K. Huang, and Y.-C. Liu. 2002. Antimicrobial susceptibility testing of Mycobacterium tuberculosis to first-line drugs: comparisons of the MGIT 960 and BACTEC 460 systems. Ann. Clin. Lab. Sci. 32:142-147. - PubMed
Publication types
MeSH terms
Substances
LinkOut - more resources
Full Text Sources
Medical
