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中国临床药理学与治疗学 ›› 2007, Vol. 12 ›› Issue (8): 911-914.

• 基础研究 • 上一篇    下一篇

左氧氟沙星联合万古霉素缩小金黄色葡萄球菌耐药突变选择窗的初步研究

李朝霞1, 刘又宁1, 王睿2, 童卫杭2, 程仕虎1   

  1. 1解放军总医院呼吸内科, 2解放军总医院临床药理研究室, 北京 100853
  • 收稿日期:2007-04-29 修回日期:2007-06-05 出版日期:2007-08-26 发布日期:2020-10-27
  • 通讯作者: 刘又宁, 男, 医学博士, 教授, 博士生导师, 研究方向:肺部感染性疾病和呼吸衰竭的诊断治疗。Tel:010-66939366 E-mail:liuyn@301hospital.com.cn
  • 作者简介:李朝霞,女,博士研究生,主治医师,研究方向:肺部感染性疾病和细菌耐药机制。Tel:010-66937090 E-mail:lzx99@vip.sinacom

Preliminary study for narrowing mutant selection window of staphylococcus aureus by combination of levofloxacin and Vancomycin in vitro

LI Zhao-xia1, LIU You-ning1, WANG Rui2, TONG Wei-hang2, CHENG Shi-hu1   

  1. 1Department of Respiratory of General Hospital of PLA, 2Clinical Pharmacology Laboratory of General Hospital of PLA, Beijing 100853, China
  • Received:2007-04-29 Revised:2007-06-05 Online:2007-08-26 Published:2020-10-27

摘要: 目的: 在体外初步探讨联合用药可缩小单药对细菌的耐药突变选择窗(MSW), 为临床合理使用现有抗菌药物, 防止细菌耐药产生提供理论依据。方法: 应用肉汤法富集1010 CFU/mL细菌, 琼脂平板二倍稀释法测定左氧氟沙星、万古霉素单药和两药联用对金黄色葡萄球菌ATCC29213 的最低药物浓度(MPC)和MSW。结果: 左氧氟沙星、万古霉素单药对金黄色葡萄球菌ATCC29213 的MSW 分别为16和64 。万古霉素和左氧氟沙星联合用药(1MIC+8MIC, 2MIC+ 4MIC)使左氧氟沙星单药对ATCC29213 的MSW 缩小2~4 倍。左氧氟沙星联合万古霉素用药(1MIC+16MIC, 2MIC+8MIC)使万古霉素对ATCC29213 的MSW 缩小4~8 倍。结论: 万古霉素和左氧氟沙星联合用药可缩小各自单药对金黄色葡萄球菌ATCC29213 的MSW。

关键词: 左氧氟沙星, 万古霉素, 金黄色葡萄球菌, 耐药突变选择窗

Abstract: AIM: To study whether levofloxacin and Vancomycin combination can narrow mutant selection window(MSW)of single drug group in vitro, which contribute to new strategies for restricting the development of resistance and provide data for rational applications of available antibacterial drugs in clinic practice. METHODS: Minimal antibiotic concentration(MPC)and MSWs were determined by spreading 1010 CFU/mL coccus on agar plates at different drug concentrations.MPC was defined as the lowest concentration inhibiting 100% of the coccus population after 72 h incubation. RESULTS: MSW of levofloxacin and vancomycin for staphylococcus aureus strain ATCC29213 was 16 and 64 respectively;Vancomycin combined with levofloxacin(1MIC+8MIC, 2MIC+ 4MIC)decreased the MSW of levofloxacin to staphylococcus aureus ATCC29213 for 2-4 times;Levofloxacin combined with vancomycin(1MIC+16MIC, 2MIC+8MIC) decreased the MSW of vancomycin to staphylococcus aureus ATCC29213 for 4-8 times. CONCLUSION: Combinations of levofloxacin and vancomycin can decrease MSW to staphylococcus aureus, ATCC29213 compared with individual drug administration.

Key words: levofloxacin, vancomycin, staphylococcus aureus, mutant selection window

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