Culture and susceptibility testing of mycobacteria with VersaTREK

被引:4
作者
Gravet, A. [1 ]
Souillard, N. [1 ]
Habermacher, J. [1 ]
Moser, A. [1 ]
Lohmann, C. [1 ]
Schmitt, F. [1 ]
Delarbre, J. -M. [1 ]
机构
[1] Ctr Hosp Mulhouse, Hop Emile Muller, Microbiol Lab, F-68070 Mulhouse, France
来源
PATHOLOGIE BIOLOGIE | 2011年 / 59卷 / 01期
关键词
Mycobacteria; Tuberculosis; Liquid culture; Susceptibility Testing; VersaTREK/ESP Culture System II; SYSTEM-II; ESP; SPECIMENS; RECOVERY; GROWTH; BLOOD;
D O I
10.1016/j.patbio.2010.08.003
中图分类号
R36 [病理学];
学科分类号
100104 ;
摘要
Objectives. - Our laboratory of microbiology use the VersaTREK/ESP Culture System II for the isolation of mycobacteria. In this study, we evaluate this system for the analysis carried out between April 2009 and March 2010. Method. - The Myco bottles are supplemented with growth supplements and an antimicrobial agent solution prior to inoculation with the specimen. The technology of the VersaTREK/ESP Culture System II is based on the detection of headspace pressure changes within a sealed bottle. It monitors changes in either gas production or gas consumption due to microbial growth. A special algorithm has been developed for detection of very slow growing mycobacteria. The bottles are incubated during 42 days. Meanwhile a solid medium is inoculated too. All specimen types can be analysed with this system. Results. - Compared to solid culture, the time needed for detection of positive cultures was significantly shorter for the VersaTREK with a good recovery rate. For isolates recovered in both systems, mean time of detection is respectively 19.1 and 35.6 days for liquid and solid cultures. Mycobacteria identification may be determined using nucleic acid probs directly in Myco VersaTREK or in the solid medium. The susceptibility test of Mycobacteria tuberculosis complex is obtained between six and 13 days for rifampin, isoniazid, ethambutol, streptomycin and pyrasinamide. Conclusion. - This system offers a faster diagnosis and is an alternative to other instruments using liquid culture. (C) 2010 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码:32 / 38
页数:7
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