靶向给药系统的体内药物动力学模型研究

Study on Pharmacokinetics Model for Targeted Drug Delivery Systems

建立靶向给药系统的体内多室线性循环药物动力学模型。以房室模型理论为依据,结合质量守恒原理,建立了数学模型,推导出了靶器官的药时函数表达式和血液中药时函数表达式。据此,可由血药数据求得靶器官的药时曲线,并求出靶器官的药物动力学参数。并用实验数据验证了其准确性。根据所得靶器官的药时函数表达式,用统计矩方法分析了靶向给药系统的靶器官药代动力学规律,求出了靶器官的药代动力学参数。结果表明:由血药数据求得的血液中和靶器官中的药时函数表达式与实验数据能很好地拟合。

Multi-compartment linear circulation mathematical model for targeted drug delivery systems was established on the bases of compartment theory and mass conservation theory. The function formulas of drug concentration-time in blood and target organ were established. According to this model, the drug concentration-time curve for the target organ can be plotted with reference to the data on blood. Based on the target organ drug concentrationtime curve,the pharmacokinetics parameters of the target organ can also be calculated by the statistical moment. We further detected the practicability of the models by using the experimental data of drug concentration-time curve in blood and target organ of microspheres. The drug concentration-time curve in blood and in target organ predicted by mathematical model was agreed with that observed.