Association between embB Codon 306 Mutations, Phenotypic Resistance Profiles, and Genotypic Characterization in Clinical Mycobacterium tuberculosis Isolates from Hebei, China.

ABSTRACT: Ethambutol (EMB) is an essential first-line drug for tuberculosis (TB) treatment. Nucleotide substitutions at embB codon 306 (embB306) have been proposed to be a potential marker for EMB resistance and a predictor of broad drug resistance in clinical Mycobacterium tuberculosis isolates. However, discordant findings about the association between embB306 mutations and EMB resistance were reported. Hebei Province is located in the Beijing-Tianjin-Hebei integration region in China; however, little information about the genetic diversity of the embB locus in this area is available. In this study, we sequenced the region surrounding embB306 (codons 207 to 445) in 62 ethambutol-resistant (EMB^r) isolates, 214 ethambutol-susceptible isolates resistant to other first-line drugs (EMB^s

SUBMITTER: Li Y 

PROVIDER: S-EPMC5119010 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature