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加替沙星和环丙沙星体外抗生素后效应期间大肠埃希菌形态学观察及膜电位和膜通透性变化

The investigation of morphological characteristics, membance potential and membance patency in Escherichia coli following ciprofloxacin exposure
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摘要 目的:通过对加替沙星和环丙沙星体外PAE期间E.coliATCC25922的形态学观察以及膜电位、膜通透性变化的研究,以期为探讨PAE形成机制提供实验依据.方法:于不同时间点吸取加替沙星和环丙沙星抗生素后效应期间的大肠埃希菌培养液,用荧光探针碘化丙啶和DiBAC4(3)进行染色,应用荧光显微镜观察E.coliATCC25922的形态学变化,并采用流式细胞仪分析其膜电位、膜通透性变化.结果:荧光显微镜结果表明菌落计数法所测定的PAE之后仍有丝状体存在,但流式细胞仪结果表明加替沙星和环丙沙星PAE期间E.coli ATCC25922膜电位及膜通透性与空白对照组比较无显著性改变.结论:加替沙星和环丙沙星PAE期间E.coli 菌体显著延长,呈丝状体,而其膜电位及膜通透性则无显著性变化,提示丝状体形成与细胞膜变化不直接相关.
出处 《中国药物应用与监测》 CAS 2003年第5期50-55,共6页 Chinese Journal of Drug Application and Monitoring
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