蛇床子素凝胶药物经皮吸收的体外研究

目的体外测定含有渗透促进剂的蛇床子素凝胶经人体皮肤的吸收.方法以离体人皮肤为渗透模型,应用Franz扩散池进行实验.样品以高效液相法测定蛇床子素的含量.结果与对照组相比,渗透促进剂Azone、薄荷醇、土荆芥油可以使得蛇床子素的稳态流量分别提高3.12、2.00、1.25倍.结论三种渗透促进剂的作用机理为破坏了皮肤角质层的屏障作用,降低了药物的扩散阻力,因而提高了蛇床子素的扩散系数.

In Vitro Skin Permeation of Osthol from Hydro-Alcoholic Gel Formulations

Aim To evaluate the in vitro percutaneous absorption behavior of osthol from a series of hydro-alcoholic gel formulations containing three penetration enhancers through excised human skin (stratum cormeum and epidermis, SCE). Methods Excised human skin was mounted in Franz-type diffusion cells. The samples withdrawn from the receptor cell were analyzed for osthol content by high-performance liquid chromatography (HPLC). Results The enhancers azone, menthol and chenopodium increased the osthol percutaneous steady-state fluxes 3.12, 2.00 and 1.25 times those of the enhancer-free formulations (controls), separately. Conclusions The main enhancement mechanism of the skin penetration enhancers azone, menthol and chenopodium is to destroy the barrier function of stratum corneum, reducing the resistance of drug transport through the skin and increasing the diffusion coefficients of osthol.