Identification of mutations related to streptomycin resistance in clinical isolates of Mycobacterium tuberculosis and possible involvement of efflux mechanism.
The MIC for streptomycin in the presence of efflux pump (EP) inhibitors and the sequencing of rpsL, rrs, and gidB genes provided evidence for the possible participation of EP in low-level streptomycin (STR) resistance of some isolates without mutations. Mutation in the gidB gene and an EP could act synergistically to confer low STR resistance.
Programa de Pós-graduação em Genética e Biologia Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
Fernanda S
FS
Spies
Pedro E Almeida
PE
da Silva
Marta O
MO
Ribeiro
Maria Lucia
ML
Rossetti
Arnaldo
A
Zaha
D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism; D004252:DNA Mutational Analysis; D006801:Humans; D008826:Microbial Sensitivity Tests; D009154:Mutation; D009169:Mycobacterium tuberculosis / Q000187:drug effects* / Q000235:genetics / Q000378:metabolism; D013307:Streptomycin / Q000494:pharmacology*; D014376:Tuberculosis / Q000382:microbiology; D018088:Tuberculosis, Multidrug-Resistant / Q000235:genetics*
D000900:Anti-Bacterial Agents; D001426:Bacterial Proteins; D013307:Streptomycin