【摘要】 目的 :通过研究小檗碱对IL - 1、TNF诱导的多形核白细胞 (PMN)与血管内皮细胞粘附及粘附分子表达的影响 ,探讨小檗碱抗炎作用机制。方法 :以小檗碱加IL - 1、TNF处理人PMN或人脐静脉内皮细胞 (HUVEC)后 ,用蛋白染料染色法研究小檗碱对PMN与HUVEC粘附的作用 ,用细胞ELISA、APAAP法研究小檗碱对细胞表面粘附分子表达的影响。结果 :小檗碱与IL - 1或TNF共同处理HUVEC ,能抑制IL - 1、TNF诱导的PMN与HUVEC间的粘附增强 ,且能下调由IL - 1、TNF诱导的HUVEC表面粘附分子ICAM - 1表达的增高 ;小檗碱与TNF共同处理PMN ,能抑制TNF诱导的PMN与HUVEC的粘附增强 ,亦能降低TNF诱导的PMN表面粘附分子CD18的表达。结论 :通过抑制细胞表面粘附分子的表达而抑制PMN与内皮细胞的粘附 ,可能是小檗碱发挥抗炎作用的机制之一。更多还原

【Abstract】 AIM:To investigate the effect of berberine on IL-1 or tumour necrosis factor (TNF) induced polymorphonuclear leucocyte(PMN)-endothelium adhesion and adhesion molecules.METHODS:Based on the model of human umbilical vein endothelial cell (HUVEC), this study adopted Rose Bengal Stain, cell ELISA, immunocyto-chemical techniques to investigate the effect of berberine on PMN-endothelium adhesion and the expression of cell adhesion molecules (CAMs).RESULTS:Berberine inhibited IL-1, TNF-induced HUVEC adhesion for PMN when pretreated HUVEC and antagonised IL-1, TNF-induced upregulation of ICAM-1 on HUVEC. Meanwhile, TNF-stimulated PMN adhesion for HUVEC and CD18 upexpression on PMN was diminished in the presence of berberine.CONCLUSION: Inhibite PMN-endothelium adhesion by downregulating the CAMs expression to inhibite PMN migration across endothelium is one of the mechanisms of antiinflammation of berberine.更多还原