期刊
DIAGNOSTIC MICROBIOLOGY AND INFECTIOUS DISEASE
卷 83, 期 2, 页码 144-149出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.diagmicrobio.2015.06.010
关键词
Tuberculous meningitis; High resolution melt curve; Diagnosis; Resistance
Timely and rapid diagnosis of multidrug resistance in tuberculous meningitis (TOM) is a challenge both for a microbiologist and neurologist. The present study was conducted to evaluate role of real-time polymerase chain reaction (PCR) using rpoB, IS6110, and MPB64 as targets in diagnosis of TBM in 110 patients and subsequent high-resolution melt (HRM) curve analysis of rpoB gene amplicons for screening of drug resistance. The sensitivity of smear, culture, and real-time PCR was 1.8%, 10.9%, and 83.63%, respectively. All 120 control patients showed negative results. With HRM rpoB analysis, rifampicin resistance was detected in 3 out of 110 cases of TBM (3.33%). Subsequently, results of HRM analysis were confirmed by rpoB gene sequencing, and mutations were observed at 516 (2 patients) and 531 (1 patient) codons, respectively. rpoB HRM analysis can be a promising tool for rapid diagnosis and screening of drug resistance in TBM patients in 90 minutes. (C) 2015 Elsevier Inc. All rights reserved.
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