麻黄汤中臣佐使药对君药中伪麻黄碱的人体药代学的影响

目的:以君药效应成分伪麻黄碱(pseudo-ephedrine,PE)为指标,用GC-MS法考察不同配伍对PE药代学参数的影响规律,探索麻黄汤方中臣佐使药对君药人体内过程的影响。方法:对麻黄汤作正交设计拆成8个配伍组,每组8名健康男性志愿者,服药后在不同时间点抽取静脉血,测定血清中PE的含量,绘制药-时曲线;选用药代软件Win-Nonlin4.0.1求算药代学参数;采用SPSS10.0软件对药代参数进行统计分析。结果:所有药时曲线均符合无滞后开放式一房室动力学模型;不同配伍对PE的部分药代学参数有显著影响(P<0.05);方中各药味对PE的部分药代参数的影响有显著交互作用(P<0.05)。结论:臣佐使药对方中君药有效成分伪麻黄碱的药代学参数有一定影响。

Effect on pharmacokinetics of pseudo-ephedrine in human plasma among herbs in Mahuang decoction

Objective: To develop a GC-MS method for the determination of pseudo-ephedrine in human plasma and study the mutative rules of the pharmacokinetic parameters of the pseudo-ephedrine in different compositions. Method: Orthogonal design was used to determine 8 compositions from Mahuang decoction (MHD). The healthy volunteers were divided into groups in random, each group including 8 men. After taking the medicine orally, vena blood would be taken out at different time. Determining pseudo-ephedrine in plasma and plotting the concentration-time curve, the pharmacokinetic parameters of each composition were calculated by WinNonlin 4.0.1. The statistical analysis of the pharmacokinetic parameters was proceeded by SPSS 10.0. Result: All concentration-time curves were adequately modeled by one compartment, first order absorption model, no lag time. Some parameters of pseudo-ephedrine showed significant variance (P<0.05) in different compositions. The statistic results showed interactions between drugs in MHD (P<0.05). Conclusion: The other herbs erds of MHD have some certain extent effects to the pharmacokinetic parameters of pseudo-ephedrine in the dominant drug.