磺脲类胰岛素促分泌剂结构与其药物动力学参数间的定量关系分析
首发时间:2012-12-25
摘要:目的: 研究磺脲类胰岛素促分泌剂的化学结构与药物动力学参数之间的关系, 为新药早期筛选提供参考依据。方法: 首先采用InsightⅡ软件的分子力学和分子动力学程序对磺脲类胰岛素促分泌剂的立体结构进行能量优化, 获得能量最低,最稳定的结;其次采用HyperChem软件计算稳定结构的理化性质参数,如油水分配系数(Log P),表面积(Surface Area)等。并对药物的理化性质参数与药物动力学参数之间关系进行研究。结果: 该类药物的油水分配系数( Log P)与血管外给药后的达峰时间( Tmax ) 存在二次函数关系, 二者的相关性达到0. 9 以上。结论: 该类药物的油水分配系数 ( Log P) 与给药后的达峰时间(Tmax )存在的关系对该类药物的进一步结构改造, 设计新药具有重要的指导意义。
关键词: 药物动力学 分子力学和分子动力学 分子模拟 磺脲类胰岛素促分泌剂
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Quantitative analysis between structures and pharmacokinetic parameters of Sulfonylurea Insulin Secretagogue drugs
Abstract:Objective: To study on the quantitative structures-pharmacokinetic relationship of sulfonylurea Insulin secretagogues to provide the theoretic method to screen new drugs in early period. METHODS: The structures of sulfonylurea Insulin secretagogues were conversed from two to three dimensional structure by InsightⅡProgram. The conversed structures were optimized to the minimum energy by the steepest descent and conjugate gradient methods. The physico-chemical parameters of the optimized structures, including Log P, surface area et al, were calculated by HyperChem Program. The interrelation between structures and pharmacokinetic parameters for sulfonylurea Insulin secretagogues was analyzed. RESULTS: There was a good correlation between the hydrophobicity constants ( Log P) and the reached peak time ( Tmax ) after extravenous administration of the sulfonylurea Insulin secretagogues to the subjects. The correlation coeff icient was over 0. 9. CONCLUSION: The correlation between the chemical structure and its pharmacokinetic parameters can provide instructions to new drug design for sulfonylurea Insulin secretagogues.
Keywords: Pharmacokinetic Molecular mechanics and dynamics Molecular simulation Sulfonylurea Insulin secretagogues
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磺脲类胰岛素促分泌剂结构与其药物动力学参数间的定量关系分析
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