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期 刊 ：中国中药杂志 2008年 33卷 13期 页码：1617.

关键词：血管内皮细胞；单核细胞；细胞黏附分子；核转录因子kappa B；活血注射液；

Keywords:vascular endothelial cell, monocytes, cell adhesion molecules, nuclear factor kappa B, Huoxue injection,

摘 要 ：目的：观察活血注射液对氧化型低密度脂蛋白(ox-LDL)诱导的人脐静脉内皮细胞(HUVEC) 的细胞间黏附分子-1(ICAM-1)、血管细胞黏附分子-1(VCAM-1)的表达及与人单核细胞黏附作用的影响，并探讨核转录因子kappa B(NF-κB) 在其中的调控作用。方法：HUVEC与单核细胞的黏附率用蛋白定量法检测；ICAM-1，VCAM-1 mRNA和蛋白表达分别用RT-PCR技术和流式细胞仪检测；NF-κB p65的阳性细胞百分率和细胞核/浆染色的灰度比值用免疫细胞化学法测定。结果：ox-LDL作用HUVEC后12,24 h时，人单核细胞与HUVEC的黏附率显著升高, HUVEC中ICAM-1和VCAM-1的mRNA和蛋白表达水平也均明显升高, HUVEC的NF-κB p65的阳性细胞百分率和细胞核/浆染色的灰度比值明显增高，明显高于正常组(P<0.05，P<0.01)，而活血注射液可明显降低人单核细胞与HUVEC的黏附率和HUVEC ICAM-1，VCAM-1 mRNA和蛋白表达水平，以及显著降低HUVEC中NF-κB p65的阳性细胞百分率和细胞核/浆染色的灰度比值，与ox-LDL组相比均有显著性差异(P<0.05，P<0.01)，这种作用随着剂量的增加而增强。结论：活血注射液能通过下调内皮细胞表面ICAM-1，VCAM-1 mRNA和蛋白表达抑制单核-血管内皮细胞黏附,其可能机制是其通过抑制内皮细胞NF-κB p65的活性，从而发挥对血管内皮细胞的保护作用。

Abstract:Objective: To observe effect of Huoxue injection on the expression of intercellular cell adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1), the adherence of monocytes to endothelial cells, and the regulation role of nuclear factor kappa B (NF-κB) in cultured human umbilical vein endothelial cells (HUVEC) injury induced by the oxidized low-density lipoprotein (ox-LDL ). Method: The ox-LDL (100 mg·L^-1) was added to the cultured HUVEC to prepare the injury model of HUVEC. The adhesive percentage between HUVEC treated with ox-LDL and monocytes was determined by protein quantification. Expression of mRNA and protein of ICAM-1 and VCAM-1 were determined by RT-PCR and flow cytometry respectively. The percentage of positive cells and the ratio of nuclei and cytoplasm of NF-κB p65 staining in HUVEC the were examined by cell immunochemistry. Result: Treatment of HUVEC with ox-LDL for 12, 24 hours significantly increased adhesion of monocytes to HUVEC and enhanced the expressions of mRNA and protein of ICAM-1 and VCAM-1. The percentage of positive cells and the ratio of nuclei and cytoplasm of NF-κB p65 staining in HUVEC were significantly increased after treatment with ox-LDL for 24 hours. Huo Xue Injection could significantly inhibit the adhesion between monocyte and HUVEC, the expression of mRNA and protein of ICAM-1 and VCAM-1, and declined the percentage of positive cells and the ratio of nuclei and cytoplasm of NF-κB p65 staining in HUVEC. The effects were strengthened with increasing the deal of Huoxue injection. Conclusion: Huoxue injection has an inhibitory effect on the adherence of monocytes to HUVEC, probably by way of down-regulating the expression of mRNA and protein of ICAM-1 and VCAM-1 in HUVEC. The mechanism is probably associated with inhibiting the activation of NF-κB p65 of HUVEC. The effects of Huoxue injection can bring about the protective effect to endothelial cells injury induced by ox-LDL.

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