【摘要】 目的测定磷酸川芎嗪微透析体外回收率并对其稳定性进行考察。方法采用浓差法(增量法、减量法)测定回收率,考察流速、浓度对回收率的影响。结果增量法及减量法测定的回收率一致;回收率与媒体中磷酸川芎嗪的浓度无关,稳定性良好。结论微透析取样技术可用于磷酸川芎嗪的药动学研究,浓差法中的减量法(即体内研究中的反透析法)可作为脑微透析研究中磷酸川芎嗪回收率的测定方法。更多还原

【Abstract】 Objective To detect the in-vitro recovery of tetramethylpyrazine phosphate (TMPP) in microdialysis probe and to study its stability. Methods The recovery of TMPP was detected by concentration difference method (increment method and decrement method ). The effect of flow rates and concentrations on recovery was studied. Results The recovery detected by increment method was as the same as that detected by decrement method; TMPP recovery was independent of TMPP concentration in the external medium. TMPP recovery had good stability. Conclusion Microdialysis sampling can be used for the pharmacokinetic study of TMPP and decrement method (ie. retrodialysis) can be used for the determination of TMPP recovery.更多还原