摘要
目的 :探讨旁路活化补体协同TNF -α对血管内皮细胞ICAM - 1表达及中性粒细胞 -内皮细胞(PMN -EC)粘附的影响。方法 :采用酵母多糖活化人血清 (ZAHS)单独、和TNF -α协同作用于体外培养的内皮细胞单层 ,用直接细胞计数和改良细胞ELISA方法检测中性粒细胞 -内皮细胞粘附率的变化和细胞间粘附分子 (ICAM -1)的表达。结果 :旁路活化补体单独作用于内皮细胞对PMN -EC粘附和ICAM - 1的表达仅有轻微影响 ;和 4 0 μg/L的TNF -α共同作用可以明显促进PMN -EC粘附率和ICAM - 1的表达。结论 :旁路活化补体对TNF -α诱导的PMN-EC粘附及ICAM - 1的表达具有促进作用 。
AIM: To investigate the influences of bypass-activated complement and TNF-α on intercellular adhesion molecule 1(ICAM-1) expression in endothelial cells, and polymorphonuclear neutrophil-endothelial cell (PMN-EC) adhesion. METHODS: In vitro, zymosan-activated human serum(ZAHS) and/or TNF-α directly stimulated the HUVECS monolayers. PMN-EC adhesion percentage was measured, and modified whole-cell ELISA was used for measurement of ICAM-1. RESULTS: ZAHS alone resulted in no significant change in the degree of PMN adhesion and the level of ICAM-1. Activation of HUVECS with TNF-α followed by ZAHS stimulation resulted in greater increase in PMN-EC adhesion and ICAM-1 expression, as compared with the activation with TNF-α alone. CONCLUSION: Bypass-activated complement can promote ICAM-1 expression and neutrophil -endothelium adhesion induced by TNF-α, and so it is effective for promoting inflammation.
出处
《中国病理生理杂志》
CAS
CSCD
北大核心
2003年第9期1217-1220,共4页
Chinese Journal of Pathophysiology
基金
重庆市科研项目 ( 0 0 - 2 0 12 )
关键词
补体
内皮
肿瘤坏死因子
中性白细胞
细胞粘附分子1
Complement
Endothelium
Tumor necrosis factor
Neutrophil
Intercellular adhesion molecule-1
