天津医药 ›› 2023, Vol. 51 ›› Issue (12): 1339-1343.doi: 10.11958/20230325

• 实验研究 • 上一篇    下一篇

毛蕊花糖苷调节HMGB1/RAGE/NF-κB信号通路对动脉粥样硬化大鼠内皮功能障碍的影响

刘艳文1(), 刘水清1, 林少伟1, 刘协红2   

  1. 1.江苏经贸职业技术学院(邮编211168)
    2.湖南省人民医院(湖南师范大学附属第一医院)
  • 收稿日期:2023-03-15 修回日期:2023-05-16 出版日期:2023-12-15 发布日期:2023-12-22
  • 作者简介:刘艳文(1986),女,讲师,主要从事老年慢性病、老年营养与膳食方面研究。E-mail:lyw211168@163.com
  • 基金资助:
    教育部第二批国家级职业教育教师教学创新团队建设成果(教师函[2021]7号);江苏省高等学校基础科学(自然科学)面上项目(21KJB360014)

Effect of verbascoside on endothelial dysfunction in atherosclerotic rats by regulating HMGB1/RAGE signal pathway

LIU Yanwen1(), LIU Shuiqing1, LIN Shaowei1, LIU Xiehong2   

  1. 1. Jiangsu Vocational and Technical College of Economy and Trade, Nanjing 211168, China
    2. Hunan Provincial People's Hospital (the First Affiliated Hospital of Hunan Normal University)
  • Received:2023-03-15 Revised:2023-05-16 Published:2023-12-15 Online:2023-12-22

摘要:

目的 探讨毛蕊花糖苷(VB)调节高迁移率族蛋白B1(HMGB1)/晚期糖基化终产物受体(RAGE)/核因子κB(NF-κB)信号通路对动脉粥样硬化(AS)大鼠内皮功能障碍的影响机制。方法 采用高脂饲料喂养联合维生素D3溶液腹腔注射的方法建立AS大鼠模型。将大鼠分为对照组(10只),模型组(12只),毛蕊花糖苷低、中、高剂量组(VB-L、M、H,2、5、10 mg/kg,每组10只)和阳性对照组(辛伐他汀,5 mg/kg,10只)。全自动生化分析仪检测血清中血脂水平;HE染色观察大鼠主动脉组织病理变化;酶联免疫吸附试验(ELISA)法检测血清中炎性因子及内皮细胞因子水平;微量法试剂盒检测大鼠氧化应激水平;Western blot检测主动脉HMGB1/RAGE信号通路蛋白表达。结果 与对照组相比,模型组大鼠主动脉内膜增厚、血管出现斑块,并伴有脂质沉积和炎性细胞浸润,血清中总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)、肿瘤坏死因子α(TNF-α)、白细胞介素1β(IL-1β)、C反应蛋白(CRP)、基质金属蛋白酶9(MMP-9)、内皮素1(ET-1)、内脂素、细胞间黏附分子1(ICAM-1)、丙二醛(MDA)及主动脉中HMGB1、RAGE、NF-κB磷酸化水平升高,高密度脂蛋白胆固醇(HDL-C)、一氧化氮(NO)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)水平降低(P<0.05);与模型组相比,VB各组及辛伐他汀组大鼠病理学变化明显改善,血清中TC、TG、LDL-C、TNF-α、IL-1β、CRP、MMP-9、ET-1、内脂素、ICAM-1、MDA及主动脉中HMGB1、RAGE、NF-κB磷酸化水平降低,血清HDL-C、NO、SOD、GSH-Px水平升高(P<0.05)。结论 VB可下调HMGB1/RAGE/NF-κB信号通路蛋白表达,抑制AS大鼠炎症和氧化应激,改善脂质代谢和血管内皮功能。

关键词: 麦角甾苷, 动脉粥样硬化, HMGB1蛋白质, 高级糖化终产物受体, 内皮功能障碍, 毛蕊花糖苷

Abstract:

Objective To investigate the effect of verbascoside (VB) on endothelial dysfunction in atherosclerotic (AS) rats by regulating high-mobility group protein B1 (HMGB1)/receptor for advanced glycation endproducts (RAGE)/nuclear factor κB (NF-κB) signal pathway. Methods The rat model of AS was established by high fat feeding combined with vitamin D3 solution intraperitoneal injection. Rats were divided into the control group (n=10), the model group (n=12), the low (VB-L), medium (VB-M) and high dose (VB-H) VB groups (2, 5 and 10 mg/kg, n=10), and the positive control group (simvastatin, 5 mg/kg, n=10). The serum level of blood lipids was detected by automatic biochemical analyzer. Pathological changes of aorta were observed by HE staining. Serum levels of inflammatory factors and vascular endothelial cytokines were detected by enzyme-linked immunosorbent assay (ELISA). The level of oxidative stress in rats was detected by micro-method kit. The expression of HMGB1/RAGE signal pathway protein in aorta was detected by Western blot assay. Results Compared with the control group, the intima of aorta in the model group was thickened, plaque appeared in blood vessels, accompanied by lipid deposition and inflammatory cell infiltration. Serum levels of total cholesterol (TC), triglyceride (TG), low density lipoprotein cholesterol (LDL-C), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), C-reactive protein (CRP), matrix metalloproteinase-9 (MMP-9), endothelin-1 (ET-1), visfatin, intercellular adhesion molecule-1 (ICAM-1) and malondialdehyde (MDA), and HMGB1, RAGE and phosphorylation levels of NF-κB in aorta were obviously increased. Serum levels of high-density lipoprotein cholesterol (HDL-C), nitric oxide (NO), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) were obviously decreased (P<0.05). Compared with the model group, pathological changes of rats were obviously improved in the VB-L, VB-M and VB-H groups and the simvastatin group. Serum levels of TC, TG, LDL-C, TNF-α, IL-1β, CRP, MMP-9, ET-1, visfatin, ICAM-1, MDA, and HMGB1, RAGE, phosphorylation levels of NF-κB in aorta were obviously decreased, and serum levels of HDL-C, NO, SOD and GSH-Px were obviously increased (P<0.05). Conclusion VB can down-regulate the expression of HMGB1/RAGE/NF-κB signal pathway protein, inhibit inflammation and oxidative stress in AS rats, and improve lipid metabolism and vascular endothelial function.

Key words: acteoside, atherosclerosis, HMGB1 protein, receptor for advanced glycation end products, endothelial dysfunction, verbascoside

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