硫氰酸红霉素固体分散体的制备及其体外溶出度测定  

Studies on Preparation and Dissolution of the Solid Dispersions of Erythromycin Thiocyanate

作　　者：王爽[1] 赵文明[1] 兆瑞竹 

机构地区：[1]辽宁医学院,辽宁锦州121001 [2]沈阳志鹰制药厂,辽宁沈阳110015

出　　处：《辽宁医学院学报》2012年第2期151-153,F0003,共4页Journal of Liaoning Medical University (LNMU) Bimonthly

摘　　要：目的采用固体分散技术提高硫氰酸红霉素的体外溶出度。方法选用聚乙二醇6000和聚维酮k30为载体材料,分别采用熔融法和溶剂法制备硫氰酸红霉素固体分散体(ET-SD)。采用X-射线衍射法、差示扫描量热法对ET-SD进行鉴定,并对ET-SD进行体外溶出度的测定。结果固体分散体的X-射线衍射及DSC图谱确定了硫氰酸红霉素以无定形态分散在载体中,体外溶出度实验表明其硫氰酸红霉素的溶出较原料药、物理混合物均有明显提高。结论固体分散技术可以提高硫氰酸红霉素的体外溶出度,这为更有效地利用硫氰酸红霉素等生物利用度低药物提供一种新的制剂手段。Objective To enhance the dissolution rate of erythromycin thiocyanate（ET）which is a poorly water-soluble drug by solid dispersion.Methods Solid dispersions of erythromycin thiocyanate（ET-SD） were prepared by melting or by solution,with polyethylene glycol（PEG） or polyvinylpyrrolidone（PVP） as a carrier.The physical states of ET were investigated by X-ray powder diffraction analysis and DTA.The dissolution rate of ET from solid dispersions and that from physical mixtures were also compared.Results The X-ray power diffraction and DSC spectrum of the solid dispersion showed that erythromycin thiocyanate existed in amorphous form in the carrier.The dissolution of ET solid dispersions was much faster than that of ET and the physical mixtures.Conclusion The dissolution rate of ET can be enhanced by solid dispersion;this may provide a new pharmaceutical manner for more efficaciously utilizing ET and other medicines which have low bioavailability.

关 键 词：硫氰酸红霉素 固体分散体 溶出度 

分 类 号：R917[医药卫生—药物分析学]