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《Sichuan Journal of Physiological Sciences》 2007-01
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Effects of clarithromycin on Staphylococcus aureus biofilm

Zheng Feng-jin1,Deng Xiao-hui1,Li Heng2,Sun Ai-hui1,Liu Xiao-kang1(1.Department of Pharmacology,West China School of Preclinical and Forensic Medicine,Sichuan University,Chengdu 610041;2.Department of Pathologyphysiology of Chengdu Medical College,Chengdu 610041)  
Objective:To investigate the influence of clarithromycin on Staphylococcus aureus biofilm formation and synergism of antibacterial activites between clarithromycin and ofloxacin on staphylococcus aureus.Methods: In vitro staphylococcus aureus biofilm were cultivated with 0.22 μm aperture micropore film.The MICs of clarithromycin and ofloxacin were measured;Staphylococcus aureus BF was stained with AgNO3 and the morphological structure was observed by Scanning electron microscopy(SEM);The viable bacterial in BF were counted separately by serial dilution.Results:The BF of staphylococcus aureus was formed steadily after a week.The viable bacterial amount showed when clarithromycin of 1 /16 MIC and 1 /4 MIC combined with ofloxacin alone was applied respectively,bactericidal activity of ofloxacin to Staphylococcus aureus within the BF was enhanced significantly(P0.05).Conclusions: Clarithromycin was considered to enhance significantly the bacterial sensitivity to ofloxacin on staphylococcus aureus in biofilm.
【CateGory Index】: R96
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