头孢克肟胶囊溶出曲线一致性评价研究

Consistency Evaluation of Dissolution Curves of Cefixime Capsules

目的建立头孢克肟胶囊溶出度的快速测定方法,考察头孢克肟胶囊仿制制剂与参比制剂在不同介质中溶出曲线的一致性,结合生物等效性研究结果评估体外溶出评价方法的可靠性。方法溶出实验采用桨法,转速50 r·min^(-1),以pH值1.2盐酸、pH值6.8磷酸盐缓冲液、pH值7.5磷酸盐缓冲液和水为溶出介质,优选核壳型色谱柱建立高效液相色谱测定法,分别测定仿制制剂和参比制剂溶出曲线。通过生物等效性实验,评估仿制制剂与参比制剂生物等效性。结果3批仿制制剂和参比制剂在4种介质中的相似因子(f_(2))均>60。仿制制剂和参比制剂在人体内空腹和餐后的药动学参数[达峰浓度(C_(max))、药-时曲线下面积(AUC_(0-t)、AUC_(0-∞))]均符合生物等效性标准。结论仿制制剂和参比制剂体外溶出行为一致,且生物等效。该方法简便、快速,可用于头孢克肟胶囊溶出度测定,可为头孢克肟胶囊一致性评价提供借鉴。

Objective To develop a method for rapid determination of the dissolution of cefixime capsules,to explore the consistency of the dissolution curves of the generic and reference preparations in different media,and to assess the reliability of the in vitro dissolution evaluation method according to the results of bioequivalence studies.Methods The dissolution test was performed by the paddle method at 50 r·min^(-1),using pH1.2 hydrochloric acid solution,pH6.8 phosphate buffer solution,pH7.5 phosphate buffer solution,and water as the dissolution media.And a high-performance liquid chromatography(HPLC)method with a core-shell column was established to determine the dissolution curves of the generic and reference preparations respectively.The bioequivalence of the generic and reference preparations was evaluated through the bioequivalence(BE)test.Results The similarity factors(f_(2))of the three batches of the generic and reference preparations in the four media were greater than 60.The fasting and postprandial pharmacokinetic parameters(C _(max),AUC _(0-t),AUC _(0-∞))of the generic and reference preparations in humans were all in line with the bioequivalence standard.Conclusion The in vitro dissolution behavior of the generic and reference preparations was consistent,and the two preparations were bioequivalent.The method is simple and quick,and it can be employed to measure the dissolution of cefixime capsules,which can provide references for the consistency evaluation of cefixime capsules.