Abstract
Ro 23-6240 is a new difluorinated quinolone antimicrobial agent. Its in vitro activity against a wide range of bacteria was compared with those of other quinolones and beta-lactams. Generally, members of the family Enterobacteriaceae were inhibited by low concentrations of Ro 23-6240 (MIC90 [MIC for 90% of isolates tested], less than or equal to 1 microgram/ml). Ninety percent of Staphylococcus aureus (including methicillin-resistant strains) and Neisseria gonorrhoeae isolates were inhibited by 0.5 microgram/ml. Pseudomonas aeruginosa (MIC90, 2 micrograms/ml) and Bacteroides fragilis (MIC90, 4 micrograms/ml) showed intermediate susceptibility, and Streptococcus pneumoniae (MIC90, 8 micrograms/ml) was less susceptible. Strains resistant to nalidixic acid were less susceptible to all the quinolones tested. The protein binding of Ro 23-6240 (5 micrograms/ml) was 27%.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Cohen M. A., Griffin T. J., Bien P. A., Heifetz C. L., Domagala J. M. In vitro activity of CI-934, a quinolone carboxylic acid active against gram-positive and -negative bacteria. Antimicrob Agents Chemother. 1985 Dec;28(6):766–772. doi: 10.1128/aac.28.6.766. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Richmond M. H., Sykes R. B. The beta-lactamases of gram-negative bacteria and their possible physiological role. Adv Microb Physiol. 1973;9:31–88. doi: 10.1016/s0065-2911(08)60376-8. [DOI] [PubMed] [Google Scholar]
- Wise R., Andrews J. M., Edwards L. J. In vitro activity of Bay 09867, a new quinoline derivative, compared with those of other antimicrobial agents. Antimicrob Agents Chemother. 1983 Apr;23(4):559–564. doi: 10.1128/aac.23.4.559. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wolfson J. S., Hooper D. C. The fluoroquinolones: structures, mechanisms of action and resistance, and spectra of activity in vitro. Antimicrob Agents Chemother. 1985 Oct;28(4):581–586. doi: 10.1128/aac.28.4.581. [DOI] [PMC free article] [PubMed] [Google Scholar]