桃红四物汤总生物碱缓释片的制备及其体外释放度的研究(1)
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[摘要] 目的:确定桃红四物汤总生物碱缓释片的制备工艺,并进行其释放特性的研究。方法:以羟丙甲基纤维素为骨架材料,湿法制粒压片制备缓释片,采用紫外分光光度法测定主药的含量,检测波长为302 nm;通过正交试验法,根据体外释放速率进行筛选与优化处方,确定最佳处方。结果:所制备的桃红四物汤总生物碱缓释片质量稳定,体外释放性能好,持续释药12 h,符合设计要求。结论:本法简便,结果可靠,可作为桃红四物汤总生物碱缓释制剂生产过程的质量控制方法。
[关键词] 桃红四物;总生物碱;缓释片;正交试验;体外释放度
[中图分类号] R943[文献标识码] A [文章编号] 1673-7210(2010)10(a)-042-03
Study on preparation of Total Alkaloids Sustained-release Tablets of Taohong Siwu Decoction and its release property in vitro
WANG Qiongjun1, LI Suyun2, LI Xiaodong2
(1.Zhangzhou Health Vocational College, Zhangzhou 363000, China; 2.Fujian University of Traditional Chinese Medicine, Fuzhou 350108, China)
[Abstract] Objective: To prepare Total Alkaloids Sustained-release Tablets of Taohong Siwu Decoction and evaluate its drug release property in vitro. Methods: The hydrophilic matrix hydroxypropyl methylcellulose (HPMC) was used to prepare Sustained-release Tablets by the wet granule compression technique. The content of the major drug was determined by UV spect-rophotometry at 302 nm. The optimal formulation and technology of the Tablets were studied with orthogonal test. Results: The drug release complied with the requirement of the Chinese Pharmacopoeia (2005) and the drug was sustained released in vitro over 12 h. Conclusion: The method is simple and results are reliable. It can be used for quality control.
[Key words] Taohong Siwu Decoction; Total alkaloids; Sustained-release Tablets; Orthogonal test; Release property in vitro
桃红四物汤来源于清代吴谦等所著《医宗金鉴》,活血祛瘀、养血调经,治疗经期超前属瘀血症,“若血块多,色紫黏稠,乃内瘀血,用四物汤加桃仁、红花破之,名桃红四物汤”[1]。现上市普通剂型日服药次数多,生物半衰期较短,剂量大,使用不便,患者依从性差,且药物在体内的血药浓度起伏大。本文从桃红四物中提取总生物碱,将其制成体外缓释12 h的缓释片,以减少服药次数,提高患者的依从性,同时利用亲水凝胶骨架片的黏附性,延长在胃肠道的滞留时间,使药物缓慢持久地到达吸收部位,获得较平稳持久的血药浓度,从而适应临床安全用药的要求。
1 仪器与试药
单冲压片机(上海天河制药机械厂);TH-20 机械式片剂硬度计(上海黄海药检仪器厂);ZRS-4型智能溶出试验仪(天津大学无线电厂);TU-1901双光束紫外-可见分光光度计(北京普析通用仪器有限公司厂);电子分析天平(FA2004/200 g,上海恒平科学仪器有限公司);盐酸川芎嗪对照品(中国药品生物制品检定所,批号:110817-200605);羟丙甲基纤维素(HPMC,100 M,上海卡乐康公司);其他试剂为分析纯。
2 方法与结果
2.1 桃红四物汤总生物碱缓释片的制备
2.1.1 提取工艺[2]在预实验基础上,采用酸水-有机溶剂提取法。取桃红四物汤原药材,加入8倍量的70%乙醇回流提取,溶剂用磷酸调至pH至3左右,第2次提取条件同上法浸提3次,时间分别为1、1、1 h,料液比为1∶8,提取液经测定pH约为4,合并提取液,过滤,浓缩成浸膏,减压干燥得粉末,得率为40.13%。
2.1.2 成型工艺[3]处方:取原、辅料,干燥1 h 后,过100目筛;按处方量称取药粉、HPMC、MCC,按等量递增法混合均匀,混匀后加入80%乙醇适量,制软材,过18 目筛制粒,60℃干燥1 h 后,称得混合药粉重量,再加入3%硬脂酸镁,压片机压片。
2.2 标准曲线的制备[4]
精密称取盐酸川芎嗪对照品2.4 mg,置10 ml量瓶中,加入0.1 mol/L盐酸溶解并稀释至刻度。精密吸取此对照品溶液0 ......
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