该文选择Ha Ca T皮肤角质形成细胞测定萜烯类经皮促透剂对皮肤活性表皮层的影响,探讨其促进药物透皮吸收的作用机制。选择具良好经皮促透效果的萜烯类化合物,即薄荷醇、柠檬烯、1,8-桉树脑、薄荷酮、4-萜品醇和长叶薄荷酮;采用MTT试验...该文选择Ha Ca T皮肤角质形成细胞测定萜烯类经皮促透剂对皮肤活性表皮层的影响,探讨其促进药物透皮吸收的作用机制。选择具良好经皮促透效果的萜烯类化合物,即薄荷醇、柠檬烯、1,8-桉树脑、薄荷酮、4-萜品醇和长叶薄荷酮;采用MTT试验测定萜烯类经皮促透剂的细胞毒性,利用荧光漂白恢复技术(FRAP)考察不同萜烯类促透剂对细胞膜流动性的影响,采用流式细胞仪测定不同萜烯类促透剂对细胞膜电位的改变,同时考察了萜烯类促透剂对Ha Ca T细胞内Ca2+浓度的影响,采用超微量Ca2+-ATP酶试剂盒测定萜烯促透剂对Ha Ca T细胞内Ca2+-ATP酶活性的影响。实验结果表明,相对于常用化学促透剂氮酮,6种萜烯类促透剂均显示较低细胞毒性;所选择的萜烯类促透剂可显著增加Ha Ca T细胞膜流动性、降低细胞膜电位,同时可降低Ha Ca T细胞Ca2+-ATP酶活性和细胞内Ca2+浓度而影响细胞Ca2+平衡。因此,萜烯类促透剂可能通过改变细胞内Ca2+平衡而影响细胞膜流动性及膜电位,增加皮肤活性表皮流动性而降低皮肤屏障作用,从而利于药物的透皮吸收。展开更多
The aim of this present study is to investigate the effect of Zanthoxylum bungeanum oil （essential oil from Z. bungeanum Maxim.） on cytotoxicity and the transdermal permeation of 5-fluorouracil and indomethacin. The...The aim of this present study is to investigate the effect of Zanthoxylum bungeanum oil （essential oil from Z. bungeanum Maxim.） on cytotoxicity and the transdermal permeation of 5-fluorouracil and indomethacin. The cy- totoxicity of Z. bungeanum oil on dermal fibroblasts and epidermal keratinocytes was studied using an MTT （3-（4,5-dimethylthiazol-2-yl）-2,5-diphenyltetrazolium bromide） assay. The rat skin was employed to determine the percutaneous penetration enhancement effect of Z. bungeanum oil on hydrophilic and lipophilic model drugs, i.e., 5-fluorouracil and indomethacin. The secondary structure changes of the rat stratum comeum （SC） were determined using attenuated total reflectance-Fourier transform infrared spectroscopy （ATR-FTIR）, and saturated solubilities and SC/vehicle partition coefficients of two model drugs with and without Z. bungeanum oil were also measured to un- derstand its related mechanisms of action. It was found that the half maximal inhibitory concentration （ICs0） values of Z. bungeanum oil were significantly lower in HaCaT and CCC-ESF-1 cell lines compared to the well-established and standard penetration enhancer Azone. The Z. bungeanum oil at various concentrations effectively facilitated the percutaneous penetration of two model drugs across the rat skin. In addition, the mechanisms of permeation en- hancement by Z. bungeanum oil could be explained with saturated solubility, SC/vehicle partition coefficient, and secondary structure changes of SC.展开更多
文摘该文选择Ha Ca T皮肤角质形成细胞测定萜烯类经皮促透剂对皮肤活性表皮层的影响,探讨其促进药物透皮吸收的作用机制。选择具良好经皮促透效果的萜烯类化合物,即薄荷醇、柠檬烯、1,8-桉树脑、薄荷酮、4-萜品醇和长叶薄荷酮;采用MTT试验测定萜烯类经皮促透剂的细胞毒性,利用荧光漂白恢复技术(FRAP)考察不同萜烯类促透剂对细胞膜流动性的影响,采用流式细胞仪测定不同萜烯类促透剂对细胞膜电位的改变,同时考察了萜烯类促透剂对Ha Ca T细胞内Ca2+浓度的影响,采用超微量Ca2+-ATP酶试剂盒测定萜烯促透剂对Ha Ca T细胞内Ca2+-ATP酶活性的影响。实验结果表明,相对于常用化学促透剂氮酮,6种萜烯类促透剂均显示较低细胞毒性;所选择的萜烯类促透剂可显著增加Ha Ca T细胞膜流动性、降低细胞膜电位,同时可降低Ha Ca T细胞Ca2+-ATP酶活性和细胞内Ca2+浓度而影响细胞Ca2+平衡。因此,萜烯类促透剂可能通过改变细胞内Ca2+平衡而影响细胞膜流动性及膜电位,增加皮肤活性表皮流动性而降低皮肤屏障作用,从而利于药物的透皮吸收。
基金supported by the National Natural Science Foundation of China(No.81073059)the Beijing Natural Science Foundation(No.7132127)the Innovative Research Team in Beijing University of Chinese Medicine(No.2011-CXTD-13),China
文摘The aim of this present study is to investigate the effect of Zanthoxylum bungeanum oil （essential oil from Z. bungeanum Maxim.） on cytotoxicity and the transdermal permeation of 5-fluorouracil and indomethacin. The cy- totoxicity of Z. bungeanum oil on dermal fibroblasts and epidermal keratinocytes was studied using an MTT （3-（4,5-dimethylthiazol-2-yl）-2,5-diphenyltetrazolium bromide） assay. The rat skin was employed to determine the percutaneous penetration enhancement effect of Z. bungeanum oil on hydrophilic and lipophilic model drugs, i.e., 5-fluorouracil and indomethacin. The secondary structure changes of the rat stratum comeum （SC） were determined using attenuated total reflectance-Fourier transform infrared spectroscopy （ATR-FTIR）, and saturated solubilities and SC/vehicle partition coefficients of two model drugs with and without Z. bungeanum oil were also measured to un- derstand its related mechanisms of action. It was found that the half maximal inhibitory concentration （ICs0） values of Z. bungeanum oil were significantly lower in HaCaT and CCC-ESF-1 cell lines compared to the well-established and standard penetration enhancer Azone. The Z. bungeanum oil at various concentrations effectively facilitated the percutaneous penetration of two model drugs across the rat skin. In addition, the mechanisms of permeation en- hancement by Z. bungeanum oil could be explained with saturated solubility, SC/vehicle partition coefficient, and secondary structure changes of SC.
