中药靶向给药系统的研究进展

中药靶向给药系统是指将中药或天然药物经提取分离得到有效部位或单体采用不同的载体制成的制剂,能直接定向浓集于靶器官、靶组织、靶细胞或细胞内。按载体分类综述了近年来的脂质体、微球、纳米粒、乳剂等几类中药靶向给药系统的研究进展。此外,由于中药对肠道疾病的特殊作用,口服结肠靶向给药系统也是中药靶向给药的一个重要部分。中药靶向给药系统的研究在我国还处于试探阶段,目前的研究大多数以天然有效成分为原料药物,而用中药有效部位及中药复方研制的靶向制剂屈指可数,这与制定中药有效部位及复方的质量标准及制剂工艺难度大有关,靶向给药系统是中药制剂今后发展的一个重要方向。

Advances in research on target-oriented drug delivery system of Chinese materia medica

Target-oriented drug delivery systems(TODDS) of Chinese materia medicia(CMM) is ascribed as preparations in which active fractions or single ingredient extracted from CMM or natural medicines are directly delivered with the help of different carriers to target organs,target tissues,and target cells or intracellula.Recent advances of research on TODDSs of CMM classified according to carriers,such as liposomes,microspheres,nanocapsules,and emulsions are reviewed.In addition,due to the specific actions of CMM on intestinal diseases,oral colon targeting drug delivery system is considered substantials for TODDSs of CMM.Domestic researches on TODDS of CMM in its initial stage are limited to formulations using single natural active ingredient as raw material.While the fewer TODDSs using CMM active fractions or formula recipes are underway,which relates to the tremendous difficulties in both establishment of quality standard for CMM active fractions and technology for preparation of CMM.Nevertheless one of the important goals for the development on preparation of CMM is TODDS.