Correlation of the phenotypic ethambutol susceptibility of Mycobacterium tuberculosis with embB gene mutations in Korea
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چکیده
منابع مشابه
Ethambutol resistance in Mycobacterium tuberculosis: critical role of embB mutations.
Ethambutol [(S,S')-2,2'-(ethylenediimino)di-1-butanol; EMB], is a first-line drug used to treat tuberculosis. To gain insight into the molecular basis of EMB resistance, we characterized the 10-kb embCAB locus in 16 EMB-resistant and 3 EMB-susceptible genetically distinct Mycobacterium tuberculosis strains from diverse localities by automated DNA sequencing and single-stranded conformation poly...
متن کاملNovel mutations within the embB gene in ethambutol-susceptible clinical isolates of Mycobacterium tuberculosis.
Genetic analysis of the embB gene revealed mutations in 17 (68%) of 25 ethambutol (EMB) resistant isolates (M306I, M306V, M306L, Q497R) but also in 4 (20%) of 20 EMB-susceptible isolates of Mycobacterium tuberculosis, namely, an ATG-->ATM substitution resulting in M306I, G406N, and the novel alterations M423I and A659T.
متن کاملMutations in the embB Gene and Their Association with Ethambutol Resistance in Multidrug-Resistant Mycobacterium tuberculosis Clinical Isolates from Poland
Ethambutol (EMB) continues to be used as part of a standard drug regimen for the treatment of tuberculosis (TB). Mutations in the embB gene and those within its conserved EMB resistance determining region (ERDR) in particular have repeatedly been associated with resistance to EMB in Mycobacterium tuberculosis. The aim of this study was to examine the mutational "hot spots" in the embB gene, inc...
متن کاملPoint-Mutations in embB306 Gene and Their Association with Resistance to Ethambutol in Mycobacterium tuberculosis in Clinical Isolates
Background & Objective: Mutations in embB306 gene and their association with resistance to ethambutol (EMB) in Mycobacterium tuberculosis (M. tuberculosis) have not been fully investigated. The aim of this study was to investigate the point-mutations in emb306B gene and their association with resistance to EMB in M. tuberculosis. Materials & Methods: This case (M. tuberculosis resistant to EMB...
متن کاملMutations at embB codon 306 are an important molecular indicator of ethambutol resistance in Mycobacterium tuberculosis.
Ethambutol resistance in clinical Mycobacterium tuberculosis isolates is associated primarily with missense mutations in the embB gene. However, recent reports have described the presence of embB mutations, especially those at embB codon 306, in isolates susceptible to ethambutol. To clarify the role of embB mutations in ethambutol resistance, we sequenced the ethambutol resistance-determining ...
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ژورنال
عنوان ژورنال: Journal of Medical Microbiology
سال: 2012
ISSN: 0022-2615,1473-5644
DOI: 10.1099/jmm.0.037614-0