摘要
目的:通过对不同药物所制得传递体的包封率和体外释放差异的探讨,找出药物性质对传递体包封率和体外释放影响的规律。方法:采用相同的原料和方法制备了秋水仙碱(CLC)、硫酸长春新碱(VCR)和盐酸米托蒽醌(DHAD)的传递体(CLC-T,VCR-T,DHAD-T)并测定包封率,探讨了药物的溶解性、分子质量和电性等与包封率的关系;进行传递体体外释放实验,比较不同药物传递体体外释放的差异。结果:VCR和DHAD属于亲脂性或亲水性强、分子质量大和带正电荷的药物,所得传递体的包封率高,而CLC属于两亲性的、分子质量小和不带电荷的药物,所得传递体的包封率很低;由于DHAD有插膜作用,DHAD-T的体外释放明显较VCR-T缓慢。结论:在制备传递体时,应选择亲脂性或亲水性强、分子质量大和与膜带相反电荷的药物,否则不容易制备成传递体。药物与传递体之间的相互作用是影响传递体体外释药速率的因素之一。
Objective： To investigate the influence of drug properties on the encapsulation effiency （EE） and drug release of transfersomes for a proper transfersome preparation. Method： To prepare the transfersomes of eolehicines （CLC）, vineristine sulfate （VCR） and mitoxantrone hydrochlodde （DHAD） with the same materials and methods, and then measure their EE. To find out the relationship between drug properties like solubility, molecular weight and charges, and EE. To perfonne the drug release experiments of various types of transfersomes in vitro, and compare their differences. Result： VCR and DHAD are lipophilie or hydrophilic, owing positive charges and large molecular weight, as a result, their EE are high, while CLC is amphipathie, neutral,and of small molecular weight, its EE is very low. As DHAD can insert into the membrane of transfersome, the drug release of DHAD-T in vitro is much slower than that of VCR-T. Conclusion： To prepare transfersomes with high EE, drugs that are lipophilie or hydrophilie, high molecular weight and opposite charges to the membrane should be chosen. Interaction between drugs and membrane will influnee the rate of drug release.
出处
《中国中药杂志》
CAS
CSCD
北大核心
2006年第9期728-731,共4页
China Journal of Chinese Materia Medica
关键词
传递体
秋水仙碱
硫酸长春新碱
盐酸米托蒽醌
包封率
体外释放
transfersomes
olchicine
vineristine sulfate
mitoxantrone hydroehloride
encapsulation effieney
drug release in vitro
