Comparative bactericidal activity of four fluoroquinolones against Pseudomonas aeruginosa isolated from chronic suppurative otitis media

BACKGROUND: The aim of the present study was to evaluate the bactericidal activity of four new fluoroquinolones against current isolates of Pseudomonas aeruginosa from the patients with chronic suppurative otitis media (CSOM). METHODS: We examined bactericidal activity of four types of fluoroquinolo...

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Detalles Bibliográficos
Autores principales: Ikeda, Katsuhisa, Misawa, Shigeki, Kusunoki, Takeshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2015
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4607142/
https://www.ncbi.nlm.nih.gov/pubmed/26472937
http://dx.doi.org/10.1186/s12901-015-0018-9
Descripción
Sumario:BACKGROUND: The aim of the present study was to evaluate the bactericidal activity of four new fluoroquinolones against current isolates of Pseudomonas aeruginosa from the patients with chronic suppurative otitis media (CSOM). METHODS: We examined bactericidal activity of four types of fluoroquinolones, garenoxacin (GRNX), levofloxacin (LVFX), ciprofloxacin (CPFX) and sitafloxacin (STFX) against current isolates of P. aeruginosa (50 strains). RESULTS: STFX exhibited the most potent activity of both MIC(50) and MIC(90), followed by CPFX, LVFX, and GRNX. The number of GRNX-resistant strains was significantly greater than those of LVFX, CPFX, and STFX (P < 0.05). CONCLUSION: STFX showed the most potent activity against P. aeruginosa for recent pathogens recovered from CSOM as compared with the others, suggesting that the clinical application of topical STFX would be useful to prevent the emergence of resistant mutants of P. aeruginosa.

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