Validation

Validation of two real-time PCRs targeting the PE-PGRS 20 gene and the region of difference 4 for the characterization of Mycobacterium bovis isolates

M. L. Sales, Fonseca, Jr., A. A., Orzil, L., Alencar, A. P., Hodon, M. A., Issa, M. A., Filho, P. M. Soares, Silva, M. R., Lage, A. P., and Heinemann, M. B., Validation of two real-time PCRs targeting the PE-PGRS 20 gene and the region of difference 4 for the characterization of Mycobacterium bovis isolates, vol. 13, pp. 4607-4616, 2014.

This study aimed to develop and validate real-time PCR for the diagnosis of Mycobacterium bovis isolates. Two hundred and seventy-four M. bovis isolates and 156 M. tuberculosis isolates were tested. Both qPCRs amplified all of the 274 M. bovis samples, but none of the 156 M. tuberculosis samples. The qPCR for PE-PGRS 20 had 91% efficiency and a detection limit of 0.32 ng (sensitivity and specificity for qPCR “Mbovis.100” were 99.64 and 100%, respectively).

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