长春西汀自乳化固体分散体的研究

目的：制备长春西汀自乳化固体分散体,并测定其体外特性.方法：以自乳化辅料和泊洛沙姆188（F68）为栽体制备长春西汀自乳化固体分散体,考察不同自乳化辅料及用量、不同制备方法、投药量和溶出介质对自乳化固体分散体溶出特性的影响,并采用差热分析、X-射线粉末衍射分析鉴别药物在载体中的存在状态.结果：与普通固体分散体（F1）相比,自乳化固体分散体（F8）的溶出度显著提高,药物主要以分子状态存在;自乳化辅料的种类、用量的不同对药物溶出有显著差异;溶剂法和溶剂熔融法好于熔融法;投药量和介质的不同对溶出也有一定影响.结论：与普通固体分散体相比,自乳化固体分散体能进一步提高长春西汀的溶解度和溶出度.

Study on Self-emulsifying Solid Dispersion of Vinpocetine

Objective： To prepare vinpocetine self-emulsifying solid dispersion （VIP-SESD） and determine its characteristics in vitro. Method： Seff-emulsifying solid dispersion of vinpocetine was prepared with 1768 and seff-emulsifying excipients. The dissolution in vitro were also studied, considering the effects of different self-emulsifying excipients, preparation methods, given drug content and differ- ent dissolution medias. Differential thermal analysis and powder X-ray diffraction were used to determine the status of drug in carriers. Result： Comparing with the ordinary solid dispersion （F1）, the dissolution in vitro of VIP-SESD （F8） was apparently improved, and drug in VIP-SESD （F8） almost existed as molecule. The dissolution of VIP-SESD was influenced by different self-emulsifying excipi- ents. The dissolution of VIP-SESD prepared by solvent method and solvent-melting method were better than melting method. The given drug content and different dissolution medias also had effects on the dissolution. Conclusion： Compared with the ordinary solid dispersion, the self-emulsifying solid dispersion can further improve the solubility and dissolution of vinpocetine.