离子导入法和渗透促进剂并用对裸鼠皮肤角质层影响的ESR研究

通过测定５－唑烷氮氧自由基硬脂酸（５－ＤＳＡ）标记裸鼠皮肤角质层的ＥＳＲ谱，研究离子导入法与渗透促进剂１００％月桂氮酮（１００％ＡＺ）、５％月桂氨 酮／丙二醇溶液（５％ ＡＺ／ＰＧ）和１０％油酸／丙二醇溶液（１０％ＯＡ／ＰＧ）并用对裸鼠皮肤角质层的影响。离子导入法处理皮肤后，标记物序参数降低，各向同性超精细分裂偶合常数增大，表明低密度电流能够引起皮肤角质层细胞间脂质排列有序性降低，流动性增大，极性增大；离子导入法与渗透促进剂并用处理皮肤后，序参数进一步降低，各向同性超精细分裂偶合常数进一步增大，表明二者对皮肤角质层的影响具有协同作用。

The Effects of Some Penetration Enhancers on the Transdermal Iontophoretic Delivery of Insulin in Vitro *

The effects of some commonly used penetration enhancers such as laurocapram (AZ), oleic acid (OA), poloxamer (POL) and propylene glycol (PG) on the in vitro transdermal iontophoretic delivery of insulin through full-thickness mouse skin were investigated. The results showed that AZ had a synergistic effect on iontophoretic ability to enhance skin permeation of insulin, and PG could further increase this effect. 5% AZ / PG increased the iontophoretic steady state flux of insulin by a factor of 2.75 compared to that treated with iontophoresis alone. OA did not further enhance iontophoretic effect to increase skin permeation of insulin. The combination of iontophoresis and some enhancer provided a novel idea and possibility for transdermal delivery of insulin.

基于引物链延伸反应的基因传感器的研究

依据晶体谐振频率是其表面沉积物的函数和模板-引物杂交后引物链延伸的酶促反应原理,构建了引物链延伸反应性基因传感器技术.该技术的主要特点是以快速、敏感的频变信息作为基因杂交与引物链延伸的显示系统.研究结果提示,本项技术可用于核酸同源性分析、微量DNA检测、DNA整合性的确定,也可用于目的基因的分离、特定条件下的基因突变分析及推断某基因在其基因组中的位置.