大鼠皮肤角质层对青藤碱脂质体贴剂透皮吸收的影响

Impact of rat skin stratum corneum on transdermal absorption characteristic of Sinomenine Liposome Patch

目的考察大鼠皮肤角质层对青藤碱脂质体贴剂透皮吸收的影响。方法采用Franz扩散池法分别考察正常腹部、背部皮肤及经采用胶带剥离法制备的去角质层腹部、背部皮肤的透皮吸收特性,以预设的采样间隔采样,HPLC法检测,以单位面积累积透皮量对时间拟合,透皮速率常数(J)作为判断的标准。结果除去角质层的腹部及背部皮肤比相应部位的正常皮肤J有明显增加,且皮肤中药物释放速率常数也大于相应部位的正常皮肤。结论皮肤角质层对青藤碱脂质体贴剂透皮特性有显著影响,在制备动物皮肤时应注意皮肤的完整性。

Objective To study the effect of skin stratum corneum on transdermal absorption characteristic of Sinomenine Liposome Patch. Methods The normal and stripped stratum corneum skin of back and abdomen was used to study the transdermal absorption characteristic by Franz method. The transdermal absorption sample was taken at the preset sampling time point. The sample content was determined by HPLC. The cumulative transdermal amount of per unit area was fitted with sampling time point, the transdermal rate constant （J value） was selected as comparative standard. Results The transdermal rate constant （J） of skin with stratum corneum stripped increased obviously than that of the normal skin, so was the released rate constant. Conclusion The skin stratum corneum has an notable impact on transdermal absorption characteristic of Sinomenine Liposome Patch. When the skin of exper^mental animal being prepared, the integrality should be paid more attention.