Gemifloxacin Is Efficacious against Penicillin-Resistant and Quinolone-Resistant Pneumococci in Experimental Meningitis

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American Society for Microbiology

RESUMO

In experimental rabbit meningitis, gemifloxacin penetrated inflamed meninges well (22 to 33%) and produced excellent bactericidal activity (change in log10 [Δlog10] 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 Δlog10 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 Δlog10 CFU/ml/h). The excellent antibacterial activity of gemifloxacin was also confirmed by time-kill assays over 8 h in vitro.

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