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KMID : 1101420140460020047
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Korean Journal of Clinical Laboratory Science
2014 Volume.46 No. 2 p.47 ~ p.53
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Usefulness of PCR to Mycobacterium Tuberculous and Nontuberculous Mycobacteria from Paraffin-embedded Tissues
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Choi Yeon-Il
Kim Hye-Young
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Abstract
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The purpose of this study was to evaluate the clinical utility of TB/NTM PCR by comparing the results of TB PCR to detect Mycobacterium tuberculous (MTB) and nontuberculous mycobacteria (NTM) from paraffin-embedded tissue specimens. A total of 60 cases were tested using TB PCR and TB/NTM PCR. The MTB and NTM rate of TB/NTM PCR was 84.2% (16/19), 10.5% (2/19) in TB positive of TB PCR. The NTM rate of TB/NTM PCR was 29.3% (12/41) in TB negative of TB PCR. Fourteen different species of NTM were identified, the common isolate was M. gordonae (21.4%), M. avium (14.3%), M. ulcerans (7.1%), M. interjectum (7.1%), M. gilvum (7.1%), M. fortuitum (7.1%), M. mucogenicum (7.1%). The rare species identified were M. farcinogenes (7.1%), M. tokaiense (7.1%). Therefore, TB/NTM PCR is useful to differentiate MTB and NTM from paraffin-embedded tissue specimens and it is more effective in detecting NTM with TB PCR.
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KEYWORD
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NTM, TB PCR, TB/NTM PCR, Paraffin-embedded tissues
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