麝香保心pH依赖型梯度释药微丸的研究

被引:38
作者
宋洪涛
郭涛
张汝华
马燕
李铣
毕开顺
机构
[1] 沈阳军区总医院药剂科
[2] 沈阳药科大学
[3] 沈阳药科大学 辽宁沈阳
[4] 辽宁沈阳
关键词
复方中药; 缓释; 麝香保心微丸; pH依赖型梯度释药系统; 胃肠道转运; 人体内药代动力学;
D O I
10.16438/j.0513-4870.2002.10.014
中图分类号
R283.6 [剂型];
学科分类号
1008 ;
摘要
目的 制备麝香保心pH依赖型梯度释药微丸并进行体内外考察。方法 分别以HPMC ,EudragitL 30D 5 5和EudragitL10 0 EudragitS10 0 (1∶5 )为包衣材料制备pH依赖型梯度释药微丸 ,并进行体外释放度、胃肠道转运和体内药代动力学研究。结果 冰片和人参总皂苷体外释放度的f2 值为 79 6 ,3种包衣微丸分别在胃、十二指肠和空回肠部崩解 ,由 3种微丸组成的缓释胶囊中冰片的Tmax与原丸剂相近 ,而Cmax明显降低 ,相对生物利用度为 96 %。结论缓释胶囊中的冰片和人参总皂苷在体外可同步缓释 ,在体内具有pH依赖性崩解溶散的特征 ,冰片作为指标性成分具有梯度缓释的药代动力学特点。
引用
收藏
页码:812 / 817
页数:6
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