Salud Pública de México
versión impresa ISSN 0036-3634
BOLADO-MARTINEZ, Enrique et al. DNA mutations associated to rifampicin or isoniazid resistance in M. tuberculosis clinical isolates from Sonora, Mexico. Salud pública Méx [online]. 2012, vol.54, n.2, pp. 167-170. ISSN 0036-3634.
OBJECTIVE: To perform the analysis of specific regions of the major genes associated with resistance to isoniazid or rifampin. MATERIALS AND METHODS: Twenty two M. tuberculosis strains, isolated from human samples obtained in Sonora, Mexico. Specific primers for hotspots of the rpoB, katG, inhA genes and the ahpC-oxyR intergenic region were used. The purified PCR products were sequenced. RESULTS: Mutations in the promoter of inhA, the ahpC-oxyR region, and codon 315 of katG and in 451 or 456 codons of rpoB, were identified. CONCLUSIONS: Detection of mutations not previously reported requires further genotypic analysis of Mycobacterium tuberculosis isolates in Sonora.
Palabras llave : Mycobacterium; mutation; drug resistance; isoniazid; rifampin.