Multicenter evaluation of crystal violet decolorization assay (CVDA) for rapid detection of isoniazid and rifampicin resistance in Mycobacterium tuberculosis


ÇOBAN A. Y. , Akbal A. U. , Bicmen C., Albay A., Sig A. K. , Uzun M. , ...Daha Fazla

SCIENTIFIC REPORTS, cilt.6, 2016 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 6
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1038/srep39050
  • Dergi Adı: SCIENTIFIC REPORTS

Özet

The aim of this multicenter study was to evaluate the performance of the crystal violet decolorization assay (CVDA) for detection of multidrug resistant tuberculosis (MDR-TB). This study was performed in 11 centers in two phases. A total of 156 isolates were tested for INH and RIF resistance. In the phase I, 106 clinical isolates were tested in the Center 1-7. In the phase 2, 156 clinical isolates were tested in the center 1-6, center 8-11. Eighty six of 156 tested isolates were the same in phase I. Agreements were 96.2-96.8% for INH and 98.1-98.7% for RIF in the phase I-II, respectively. Mean time to obtain the results in the phase I was 14.3 +/- 5.4 days. In the phase II, mean time to obtain the results was 11.6 +/- 3.5 days. Test results were obtained within 14days for 62.3% (66/106) of isolates in the phase I and 81.4% (127/156) of isolates in the phase II. In conclusion, CVDA is rapid, reliable, inexpensive, and easy to perform for rapid detection of MDR-TB isolates. In addition, it could be adapted for drug susceptibility testing with all drugs both in developed and developing countries.