RESUMEN
AIM: To assess different concentrations and formulations of topical ozenoxacin using a mouse model of Staphylococcus aureus dermal infection for identification of the best formulation for treating patients with impetigo. MATERIALS & METHODS: The efficacy of ozenoxacin formulations was compared with vehicle control, mupirocin and retapamulin ointments in a mouse model. RESULTS: The most effective concentrations of ozenoxacin for reducing S. aureus counts after dermal application were 1 and 2%. Direct comparison of two batches of 1% ozenoxacin ointment and cream with 1% retapamulin and 2% mupirocin ointments in the mouse model showed superior efficacy of ozenoxacin. CONCLUSION: 1% ozenoxacin ointment and cream were the most effective formulations in significantly reducing bacterial load in S. aureus dermally infected mice.