乳香没药挥发油对川芎中阿魏酸促透机制的研究

该研究拟探索乳香没药挥发油对川芎的促透机制,观察乳香没药挥发油对角质层微观及分子结构的影响。通过测定川芎中阿魏酸在乳香没药挥发油作用下的角质层/介质分配系数,采用扫描电镜观察乳香、没药挥发油对皮肤角质层结构的影响,利用傅里叶变换红外光谱仪考察乳香、没药挥发油对角质层内角蛋白和脂质的分子结构的影响,来探索乳香没药挥发油对角质层微观及分子结构的影响。研究结果显示乳香、没药挥发油可使阿魏酸在角质层与介质分配增强,使角质层有规律的,整齐紧密堆积排列的叠瓦式结构受到一定程度的破损,同时有部分表皮鳞片向上翻起,出现局部脱落现象。另乳香、没药挥发油使角质层脂质的CH_2伸缩振动峰和角质层角蛋白的酰胺伸缩振动峰均发生了相对的位移,表明,乳香、没药挥发油可能是使角质层中脂质及角蛋白的构象发生改变,增加角质层脂质双分子层的流动性,改变有序致密结构,来达到使皮肤的通透性增加,屏障作用降低的效果。由此可知,乳香没药可能通过增加药物在角质层分配,改变皮肤角质层结构来达到促渗效果。

Effects of Frankincense and Myrrh essential oil on transdermal absorption of ferulic acid in Chuanxiong

The aim of this paper was to explore the effects of Frankincense and Myrrh essential oil on transdermal absorption, and investigate the mechanism of permeation on the microstructure and molecular structure of stratum corneum. Through the determination of stratum corneum/medium partition coefficient of ferulicacid in Chuanxiong influenced by Frankincense and Myrrh essential oil, the effects of volatile oil of frankincense and Myrrh on the the microscopic and molecular structure of stratum corneum were explored by observation of skin stratum corneum structure under scanning electron microscopy, and investigation of frankincense and myrrh essential oil effects on the molecular structure of keratin and lipids in stratum corneum under Fourier transform infrared spectroscopy. The results showed that the oil could enhance the distribution of ferulic acid in the stratum corneum and medium, and to a certain extent damaged the imbricate structure of stratum corneum which was originally regularly, neatly, and closely arranged; some epidermal scales turned upward, with local peeling phenomenon. In addition, frankincense and myrrh essential oil caused the relative displacement of CH₂ stretching vibration peak of stratum corneum lipids and amide stretching vibration peak of stratum corneum keratin, indicating that frankincense and myrrh essential oil may change the conformation of lipid and keratin in the stratum corneum, increase the bilayer liquidity of the stratum corneum lipid, and change the orderly and compact structure to increase the skin permeability and reduce the effect of barrier function. It can be concluded that Frankincense and Myrrh essential oil can promote the permeation effect by increasing the distribution of drugs in the stratum corneum and changing the structure of the stratum corneum.