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中国临床药理学与治疗学 ›› 2005, Vol. 10 ›› Issue (5): 547-550.

• 研究原著 • 上一篇    下一篇

粘附分子在中性粒细胞-脐静脉内皮细胞粘附中作用机制的研究

张雪萍, 任永功, 刘新波, 石碧明, 曾邦雄1   

  1. 暨南大学医学院附属第二医院, 深圳人民医院麻醉科, 深圳 518020, 广州
  • 收稿日期:2004-10-13 修回日期:2005-02-28 出版日期:2005-05-26 发布日期:2020-11-19
  • 通讯作者: 张雪萍,女, 博士研究生, 副主任医师, 研究方向:麻醉与危重病医学。Tel:0755-25533018-2591 E-mail:sherlly18@tom.com
  • 作者简介:1曾邦雄, 现在武汉市协和医院。
  • 基金资助:
    深圳市科技计划项目基金资助(No200204004)

Roles of adhesion molecules in adhesion of polymophonuclear leukocytes-human umbilical vein endothelial cells

ZHANG Xue-ping, REN Yong-gong, LIU Xin-bo, SHI Bi-ming, ZHENG Bang-xiong   

  1. Department of Anesthesiology, Shenzhen People's Hospital, the Second Affiliated Hospital of Jinan Medical College,Shenzhen 518020, Shangdong, China
  • Received:2004-10-13 Revised:2005-02-28 Online:2005-05-26 Published:2020-11-19

摘要: 目的: 探讨 PMN 及血管内皮表面粘附分子在中性粒细胞-脐静脉内皮细胞(PMN-EC) 粘附中的作用。方法: 实验分5 组 :正常对照组;LPS 处理组(将PMN及 HUVEC 用 100 μg°L-1LPS 处理不同时间);LPS +CD11b 单抗处理组;LPS +ICAM-1 单抗处理组;LPS+CD11b+ICAM-1 单抗处理组。用99mTc-HM-PAO 标记 PMNs, 加入到 HUVECs 作用一段时间,PMN-EC 粘附率 =溶解液放射值 加入液放射值 ×100。结果: 与对照组相比, 经 LPS 刺激后 15 minPMN-EC 粘 附性 明显 上升 (37.45% ±3.92% vs11.03%±4.15%, P<0.05), 于 4 h 处达到峰值(73. 50%±6.39%)。CD11b 单抗和 ICAM-1 单抗可明显抑制这种粘附(P<0.05)。合用两种单抗有叠加效应。结论: 在 PMN 与内皮细胞粘附的过程中,粘附分子 CD11b 与 ICAM-1 起着举足轻重的作用,用单抗封闭粘附分子的作用可明显削弱细胞间的粘附。

关键词: 中性粒细胞, 脐静脉内皮细胞, CD11b, 细胞间粘附分子-1, 粘附, 脂多糖, 单克隆抗体

Abstract: AIM: To investigate the interaction of CD11b and its ligand ICAM-1 on PMN-HUVEC adhesion and their action mechanism. METHODS: Human neu-trophils were isolated from fresh heparinized blood of healthy volunteers by dextran sedimentation followed by Ficoll-Hypaque gradient centrifugation.The polymopho-nuclear leukocytes-human umbilical vein endothelial cells (HUVECs) were isolated from human umbilical veins by 0.25%trypsin and then cultured in RPMI1640.There were five groups in this experiment for the adhesion as-say :control group, LPS treated group (PMNs and HU-VECs were stimulated with 100 μg°L-1 LPS in different time), CD11bMoAb pretreated group, ICAM-1 MoAb pretreated group, combined CD11b and ICAM-1 MoAb pretreated group.The rate of PMN-HUVEC adhesion was calculated as formula after radiolabelling PMNs with 99mTc-HM-PAO.adherence(%) =cpm lysate/cpm added ×100.RESULTS: PMN-HUVEC adhesiveness in-creased after stimulated for 15 min compared with that in the control group (37.45%±3.92% vs 11.03% ± 4.15% P<0.05), and it reached the peak after 4 hours (73.50%±6.39%). MoAb to CD11b and ICAM-1 sig-nificantly inhibited this adhesiveness (P<0.05). More-over, an additive effect was observed when two MoAbs were used together (P< 0.05). CONCLUSION: CD11b and ICAM-1 play a crucial role in the course of PMN-HUVEC adhesion, and the adhesiveness between cells is significantly attenuated after MoAb blocked the action of adhesion molecules.

Key words: polymophonuclear leukocytes, human umbilical vein endothelial cell, CD11b, ICAM-1, adhe-sion, LPS, monoclone antibody

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