COMPARATIVE ANTIMYCOBACTERIAL ACTIVITIES OF RIFAMPIN, RIFAPENTINE, AND KRM-1648 AGAINST A COLLECTION OF RIFAMPIN-RESISTANT MYCOBACTERIUM-TUBERCULOSIS ISOLATES WITH KNOWN RPOB MUTATIONS
Sl. Moghazeh et al., COMPARATIVE ANTIMYCOBACTERIAL ACTIVITIES OF RIFAMPIN, RIFAPENTINE, AND KRM-1648 AGAINST A COLLECTION OF RIFAMPIN-RESISTANT MYCOBACTERIUM-TUBERCULOSIS ISOLATES WITH KNOWN RPOB MUTATIONS, Antimicrobial agents and chemotherapy, 40(11), 1996, pp. 2655-2657
A collection of 24 rifampin-resistant clinical isolates of Mycobacteri
um tuberculosis with characterized RNA polymerase beta-subunit (rpoB)
gene mutations was tested against the antimycobacterial agents rifampi
n, rifapentine, and KRM-1648 to correlate levels of resistance with sp
ecific rpoB genotypes. The results indicate that KRM-1648 is more acti
ve in vitro than rifampin and rifapentine, and its ability to overcome
rifampin resistance in strains with four different genetic alteration
s may prove to be useful in understanding structure-function relations
hips.