Gemifloxacin is efficacious against penicillin-resistant and quinolone-resistant pneumococci in experimental meningitis.
In experimental rabbit meningitis, gemifloxacin penetrated inflamed meninges well (22 to 33%) and produced excellent bactericidal activity (change in log(10) [Deltalog(10)] CFU/ml/h, -0.68 +/- 0.30 [mean and standard deviation]), even superior to that of the standard regimen of ceftriaxone plus vancomycin (-0.49 +/- 0.09 deltalog(10) CFU/ml/h), in the treatment of meningitis due to a penicillin-resistant pneumococcal strain (MIC, 4 mg/liter). Even against a penicillin- and quinolone-resistant strain, gemifloxacin showed good bactericidal activity (-0.48 +/- 0.16 deltalog(10) CFU/ml/h). The excellent antibacterial activity of gemifloxacin was also confirmed by time-kill assays over 8 h in vitro.
Cottagnoud
Philippe
P
Department of Internal Medicine, Inselspital, University of Bern, 3010 Bern, Switzerland. pcottagn@insel.ch
Acosta
Fernando
F
Cottagnoud
Marianne
M
Täuber
Martin G
MG
D042462:4-Quinolones; D000818:Animals; D000890:Anti-Infective Agents / Q000493:pharmacokinetics / Q000494:pharmacology / Q000627:therapeutic use*; D002555:Cerebrospinal Fluid / Q000378:metabolism; D004195:Disease Models, Animal; D024881:Drug Resistance, Bacterial; D024841:Fluoroquinolones; D000077735:Gemifloxacin; D006801:Humans; D008586:Meningitis, Pneumococcal / Q000188:drug therapy*; D008826:Microbial Sensitivity Tests; D009287:Naphthyridines / Q000493:pharmacokinetics / Q000494:pharmacology / Q000627:therapeutic use*; D010403:Penicillin Resistance; D011817:Rabbits; D013296:Streptococcus pneumoniae / Q000187:drug effects* / Q000254:growth & development; D016896:Treatment Outcome
D042462:4-Quinolones; D000890:Anti-Infective Agents; D024841:Fluoroquinolones; D009287:Naphthyridines; D000077735:Gemifloxacin