黄柏及其主要成分对细胞膜流动性的影响(英)

目的：观察具有免疫抑制作用的药物黄柏及其3种主要成分：小檗碱、药根碱与巴马汀对正常小鼠脾细胞膜流动性的影响。 方法： 以1，6－二苯基，1，3，5－己三烯（DPH）作为荧光探针，利用荧光偏振法测定脾细胞膜脂质区的流动性。 结果： 在无ConA刺激时，黄柏的水提物可提高小鼠脾细胞膜的流动性，6.25％的浓度与对照组相比有极显著性差异；小檗碱与药根碱可降低脾细胞膜的流动性，与对照组相比均有显著性差异；巴马汀可提高脾细胞膜的流动性，与对照组相比有极显著性差异。经ConA刺激后，黄柏的水提物、小檗碱、药根碱及巴马汀均可降低脾细胞膜流动性，与对照组相比有显著性差异。 结论： 上述结果提示这些药物的免疫抑制作用有可能是通过降低淋巴细胞膜的流动性来实现的。

Effects of phellodendron and its main components on the cell membrane fluidity

AIM: To investigate the effect of phellodendron and three kinds of its main components, which have a suppressive effect on the immune system, on the membrane fluidity of normal murine splenocytes. METHODS: The fluidity of membrane lipid regions of splenocytes was determined by the fluorescence polarization technique using 1, 6-diphenyl-1, 3, 5-heatriene (DPH) as a fluorescence probe. RESULTS: The results showed that the water extract of phellodendron and one of its main components (palmatine) increased the cell membrane fluidity in the inactive state, but the other two components, berberine and jatrorrhizine, decreased the cell membrane fluidity. After activated by ConA, all of them can decrease the cell membrane fluidity. CONCLUSION: These results suggest that their immunosuppressive function might be due to decreasing the cell membrane fluidity.