灯盏花素不同脂质载体凝胶体外经皮渗透性评析

目的:制备4种灯盏花素脂质载体凝胶和普通凝胶,研究4种脂质载体对灯盏花素体外经皮促渗性能.方法:采用改良Franz扩散池,以离体小鼠皮肤为透皮屏障进行体外透皮实验,对各凝胶体外透皮特性进行药动学方程拟合,采用HPLC测定单位面积累积透皮量.结果:各凝胶单位面积累积透皮量大小为固体脂质纳米粒凝胶＞传递体凝胶＞脂质体凝胶＞纳米结构脂质载体凝胶＞普通凝胶.其中固体脂质纳米粒凝胶24 h单位面积累积透皮量最大,为普通凝胶的3.75倍,体外释药特性符合Higuchi动力学方程.结论:脂质载体凝胶对灯盏花素经皮吸收有不同程度的促渗作用,其中固体脂质纳米粒为4种脂质载体凝胶中的最佳促渗载体.

Evaluation of transdermal property in vitro of different breviscapine lipid carrier gels

Objective: To prepare four breviscapine lipid carrier gels and general gel, and to study the transdermal promotive effects of them in vitro. Method: Improved Franz-type diffusion cell and isolated rat skin were used as transdermal barrier, and the transdermal property was fitted by pharmacokinetics equations. The unit area cumulative permeation quantity of breviscapine was determined by HPLC method. Result: The 24 hours' unit area cumulative permeation quantity of SLN gel was the highest, followed in descending order were transfersomal gel, liposomal gel, NLC gel and general gel. The transdermal property in vitro of SLN gel fitted in with Higuchi pharmacokinetics equation. Conclusion: The lipid carrier gels had different transdermal promotive effects to breviscapine, SLN gel was the best one as breviscapine transdermal carrier.