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  • Title: Evaluation of in vitro antimicrobial activity of lomefloxacin against staphylococci, enterococci, Enterobacteriaceae, and Pseudomonas aeruginosa.
    Author: Rossolini GM, Valentini S, Satta G.
    Journal: Diagn Microbiol Infect Dis; 1989; 12(3 Suppl):57S-64S. PubMed ID: 2507221.
    Abstract:
    In vitro antimicrobial activity of lomefloxacin and other antibiotics (norfloxacin, beta-lactams, cotrimoxazole, netilmicin, and miokamycin) was evaluated against 317 clinical isolates including Staphylococcus aureus, enterococci, Enterobacteriaceae, and Pseudomonas aeruginosa. Lomefloxacin showed a high in vitro activity against a wide variety of bacterial species. Against Enterobacteriaceae, lomefloxacin displayed the highest activity (MIC90S, less than or equal to 1 microgram/ml), and it was usually more active than ampicillin and netilmicin, and often more active than cotrimoxazole. Lomefloxacin showed a good antimicrobial activity also against both methicillin-susceptible and methicillin-resistant S. aureus, as it was able to inhibit 90% of staphylococcal strains at a concentration less than or equal to 2 micrograms/ml. Against enterococci and P. aeruginosa, lomefloxacin was usually less active (MIC90S, 8 micrograms/ml). As compared to norfloxacin, lomefloxacin displayed an overall similar activity against staphylococci and enterococci, but appeared less active against Gram-negative bacteria. Bactericidal activity of lomefloxacin against E. coli, when assayed by a novel method, proved to be high, and results indicate that an oral dose of 200 mg of lomefloxacin should exert a very high bactericidal activity against E. coli in urinary tract infections, even in those sustained by large bacterial populations.
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