高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (4): 584.

• 研究简报 • 上一篇    下一篇

镁(Ⅱ)对环丙沙星、小牛胸腺DNA间结合的调节作用

郭栋生1, 袁小英2   

  1. 1. 山西大学环境科学系, 太原 030006;
    2. 山西大学分析测试中心, 太原 030006
  • 收稿日期:1998-04-12 出版日期:1999-04-24 发布日期:1999-04-24
  • 通讯作者: 郭栋生,男,44岁,硕士,副教授.
  • 作者简介:郭栋生,男,44岁,硕士,副教授.

The Regulation of Mg(Ⅱ) to the Combination of Ciprofloxacin and Calf Thymus DNA

GUO Dong-Sheng1, YUAN Xiao-Ying2   

  1. 1. Department of Environment Science, Shanxi University, Taiyuan, 030006;
    2. The Center of Analysis and Measurements, Shanxi University, Taiyuan, 030006
  • Received:1998-04-12 Online:1999-04-24 Published:1999-04-24

摘要: 近来的研究表明,喹诺酮类抗菌药物与细菌DNA分子间的结合可能受到介质离子强度等因素的影响.人们对镁(Ⅱ)在药物与DNA结合中所起的作用虽有研究[1,3],但多是从药理学的角度进行的.

关键词: 环丙沙星, 小牛胸腺DNA, 镁(Ⅱ), 三元络合物, 荧光法

Abstract: Using the method of fluorescence, the binding constants of ciprofloxacin(CPFX)-Mg(Ⅱ)and CPFX-calf thymus DNA(C. T. DNA), the formed quantity and the forming condition of ternary complex of CPFX-Mg(Ⅱ)-C.T.DNA have been determined. Adding Mg(Ⅱ) to the binary system of CPFX with C.T.DNA, the binding quantity of CPFXwith C.T.DNAincreases to the largest, then decrease up to zero in the end as the increase of the concentration of Mg(Ⅱ). The result shows the amount of CPFX bound to C.T.DNA is modulated by Mg(Ⅱ), and in the concentration of Mg(Ⅱ) precented in eucaryotic organism cytoplasm, CPFX has no obvious combination with C. T. DNA.

Key words: Ciprofloxacin, Calf thymus DNA, Mg(Ⅱ), Ternary complex, Fluorescence

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