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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/27667


    標題: In vitro efficacy of fosfomycin-containing regimens against methicillin-resistant Staphylococcus aureus in biofilms
    作者: Tang, Hung-Jen
    Chen, Chi-Chung
    Cheng, Kuo-Chen
    Toh, Han-Siong
    Su, Bo-An
    Chiang, Shyh-Ren
    Ko, Wen-Chien
    Chuang, Yin-Ching
    貢獻者: 保健營養系
    關鍵字: Combination Effect
    Biofilm-Embedded Mrsa
    S
    Aureus
    日期: 2012-04
    上傳時間: 2014-03-21 16:17:01 (UTC+8)
    出版者: Oxford Univ Press
    摘要: To compare the in vitro antibacterial efficacy of antistaphylococcal antibiotics in combination with fosfomycin or rifampicin, using a biofilm model.The antibacterial activities of fusidic acid, linezolid, vancomycin, teicoplanin, rifampicin, minocycline, fosfomycin and tigecycline, individually and in fosfomycin or rifampicin combinations, were measured against planktonic or biofilm-embedded methicillin-resistant Staphylococcus aureus (MRSA) with susceptible and resistant breakpoint concentrations (SBCs and RBCs, respectively), using the MTT-staining method and by counting the number of cfu in the biofilms.Linezolid alone at its SBC, and fosfomycin, linezolid, minocycline and tigecycline at their RBCs, exhibited killing effects on biofilm-embedded MRSA (P0.0001). Of the eight fosfomycin combinations studied, fosfomycin combined with linezolid, minocycline, vancomycin or teicoplanin at their respective SBCs, exhibited enhanced antibacterial activities (P0.0001) when compared with the control group, and outperformed rifampicin combinations (P0.01). The killing effects of fosfomycin combinations at their respective RBCs were better than those at their respective SBCs (P0.05). Significantly enhanced killing effects were observed with fosfomycin in combination with vancomycin or teicoplanin, compared with vancomycin or teicoplanin alone. For 10 randomly selected MRSA isolates, the results of colony counting in biofilms were comparable with those of the MTT-staining method.Fosfomycin enhanced the activities of linezolid, minocycline, vancomycin and teicoplanin. These combinatorial treatments were even better than rifampicin combination regimens, and may provide therapeutic advantages in catheter-related or prosthetic joint infections.
    Appears in Collections:[保健營養系(所) ] 期刊論文

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