- Record: found
- Abstract: found
- Article: not found
Dual inhibitory activity of sitafloxacin (DU-6859a) against DNA gyrase and topoisomerase IV of Streptococcus pneumoniae.
Read this article at
ScienceOpenPubMed
There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Abstract
The in-vitro inhibitory activities of sitafloxacin (DU-6859a) and other quinolones against Streptococcus pneumoniae DNA gyrase and topoisomerase IV were measured. IC50s of levofloxacin, ciprofloxacin, sparfloxacin and tosufloxacin against DNA gyrase were almost three to 12 times higher than those against topoisomerase IV. On the other hand, sitafloxacin showed dual inhibitory activity against both enzymes and its IC50s were the lowest among those of the quinolones tested. These results suggest that sitafloxacin is an effective agent against pneumococcal infections and that the incidence of drug-resistant mutants is low.