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山楂叶原花青素对肿瘤坏死因子—α诱导人脐静脉内皮细胞细胞间黏附分子—1和E—选择素过表达的影响

2017-08-10李澎王建农许勇刚付建华刘建勋

中国中医药信息杂志 2017年8期

李澎 王建农 许勇刚 付建华 刘建勋

摘要:目的 观察山楂叶原花青素对肿瘤坏死因子-α(TNF-α)诱导的人脐静脉内皮细胞细胞间黏附分子-1(ICAM-1)和E-选择素过表达的影响,探讨其抗炎作用的机制。方法 体外培养人脐静脉内皮细胞。MTT法检测细胞活力,流式细胞术检测ICAM-1和E-选择素的表达。结果 山楂叶原花青素浓度≤200 mg/L时,对细胞活力无明显影响;模型组人脐静脉内皮细胞ICAM-1和E-选择素表达较正常组显著升高,10、20、30、40、50 mg/L山楂叶原花青素浓度依赖地抑制ICAM-1和E-选择素的表达升高,其中40、50 mg/L组较模型组差异有统计学意义。结论 山楂叶原花青素能够抑制TNF-α诱导的血管内皮细胞ICAM-1和E-选择素的过表达,这可能与其抗炎作用相关。

关键词:山楂叶;原花青素;血管内皮细胞;肿瘤坏死因子-α;细胞间黏附分子-1;E-选择素

DOI:10.3969/j.issn.1005-5304.2017.08.012

中图分类号:R285.5 文献标识码:A 文章编号:1005-5304(2017)08-0050-04

Effects of Hawthorn Leaf Procyanidins on Over Expressions of ICAM-1 and E-selectin in Human Umbilical Vein Endothelial Cells Induced by TNF-α LI Peng, WANG Jian-nong, XU Yong-gang, FU Jian-hua, LIU Jian-xun (Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China)

Abstract: Objective To observe the effects of hawthorn leaf procyanidins (HLP) on over expressions of ICAM-1 and E-selectin in human umbilical vein endothelial cells (HUVEC) induced by TNF-α,and clarify the mechanism of HLPs anti-inflammation effect. Methods HUVEC were cultured in vitro. MTT assay was used to detect cell viabilities. The expressions of ICAM-1 and E-selectin in HUVEC were detected by flowcytometry. Results Up to 200 mg/L, HLP showed no significant decrease in cell viabilities; the expression levels of ICAM-1 and E-selectin in the model group significantly increased, compared with that in the normal group; 10, 20, 30, 40, 50 mg/L HLP inhibited the expression elevations of ICAM-1 and E-selectin in concentration-dependent manner; and there were statistical significances in 40, 50 mg/L HLP groups, compared with the model group. Conclusion HLP can inhibit the over expressions of ICAM-1 and E-selectin of vascular endothelial cells induced by TNF-α, which possibly underlies HLPs anti-inflammation effect.

Key words: hawthorn leaf; procyanidins; vascular endothelial cell; TNF-α; ICAM-1; E-selectin

過度的炎症反应是动脉粥样硬化、缺血性心脏病、中风、感染性休克等疾病发展、恶化乃至造成死亡的关键病理环节。因此,抑制炎症发生、阻断炎症反应过程,对于这些重大难治疾病的治疗具有重要意义。山楂叶具有活血化瘀、降脂消浊的功效。原花青素是山楂叶的重要活性成分,约占山楂叶黄酮类物质

基金项目:国家自然科学基金(81274196);北京市自然科学基金(7092089)

通讯作者:付建华,E-mail:jianhuaffcn@263.net

总量的20%。有研究显示,原花青素可抑制炎症细胞的激活、降低炎症因子的释放,还可以直接对抗氧自由基、氮过氧化物等炎症毒素对细胞的杀伤[1-2]。我们前期研究显示,富含原花青素的山楂叶提取物能抑制缺氧复氧诱导的白细胞与内皮细胞的黏附,降低白细胞黏附分子的表达[3]。……

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