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Experimental and Clinical Research

In Vitro Evaluation of Faropenem Activity Against Anaerobic Bacteria

Pages 36-45 | Published online: 18 Jul 2013
 

Abstract

Faropenem, a new oral penem with broad spectrum activity, could be used as empirical treatment in infections due to unidentified anaerobes, but only a few investigations have been carried out on these bacteria. The aim of this study was to compare faropenem In Vitro activity with that of positive antimicrobial controls (metronidazole, imipenem, meropenem, amoxicillin, amoxicillin-clavulanic acid, ticarcillin-clavulanic acid, cefotetan, cefoxitin and clindamycin) against 462 anaerobic bacterial strains. The reference agar dilution method was used according to the NCCLS standard. Faropenem demonstrated high antimicrobial activity, similar to that of both imipenem and meropenem (faropenem Minimal Inhibitory Concentrations 50% and 90% were 0.12 and 1 mg/L for all Gram-negative anaerobes, 0.25 and 1 mg/L for all Gram-positive anaerobes). Only 5 strains of the Bacteroides fragilis group(1.1% of all anaerobes) were resistant to faropenem, which compared favorably with that of other reference antianaerobic drugs. The results obtained confirm those previously reported.

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