Antibacterial activities of OPC-17116, ofloxacin, and ciprofloxacin against 200 isolates of Neisseria gonorrhoeae.
OPC-17116 is a new fluoroquinolone with potent activity against aerobic and anaerobic organisms. We evaluated the susceptibilities of 200 clinical gonococcal isolates including organisms with plasmid and chromosomally mediated resistance to beta-lactams and tetracycline. The antibiotics studied included OPC-17116, ofloxacin, ciprofloxacin, penicillin, tetracycline, erythromycin, azithromycin, and ceftriaxone. All isolates tested were susceptible to the quinolone class of antibiotics. The MICs of ciprofloxacin, ofloxacin, and OPC-17116 for 90% of isolates tested were 0.004, 0.03, and 0.004 micrograms/ml, respectively. For organisms with chromosomally mediated resistance to penicillin and tetracycline, geometric mean MICs of all antibiotics including the quinolones were increased.
Zenilman
J M
JM
Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, Maryland.
Neumann
T
T
Patton
M
M
Reichart
C
C
D000890:Anti-Infective Agents / Q000494:pharmacology*; D002939:Ciprofloxacin / Q000494:pharmacology*; D024841:Fluoroquinolones; D008826:Microbial Sensitivity Tests; D009344:Neisseria gonorrhoeae / Q000187:drug effects*; D015242:Ofloxacin / Q000494:pharmacology*; D010403:Penicillin Resistance; D010879:Piperazines / Q000494:pharmacology*; D015363:Quinolones / Q000494:pharmacology*; D013753:Tetracycline Resistance
D000890:Anti-Infective Agents; D024841:Fluoroquinolones; D010879:Piperazines; D015363:Quinolones; D002939:Ciprofloxacin; D015242:Ofloxacin; C075375:grepafloxacin