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中国药学(英文版) ›› 2023, Vol. 32 ›› Issue (6): 460-472.DOI: 10.5246/jcps.2023.06.039

• 【研究论文】 • 上一篇    下一篇

芒果苷通过抑制MCP-1/CCR2信号通路减轻自发性高血压大鼠心脏炎症损伤

胡小勤1,3, 丁雪菲1, 邓家刚1,2, 郝二伟1,2, 杜正彩1,2, 周蓓1,2, 曾学文1,3,*()   

  1. 1. 广西中医药大学 药学院, 广西 南宁 530001
    2. 广西中药药效研究重点实验室, 广西 南宁 530001
    3. 金华高等研究院, 浙江 金华 321000
  • 收稿日期:2022-11-12 修回日期:2022-12-20 接受日期:2023-01-07 出版日期:2023-07-01 发布日期:2023-07-01
  • 通讯作者: 曾学文
  • 作者简介:
    + Tel.: +86-15907813718, E-mail:

Mangiferin alleviates cardiac inflammatory injury in spontaneously hypertensive rats by inhibiting the MCP-1/CCR2 signaling pathway

Xiaoqin Hu1,3, Xuefei Ding1, Jiagang Deng1,2, Erwei Hao1,2, Zhengcai Du1,2, Bei Zhou1,2, Xuewen Zeng1,3,*()   

  1. 1 College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530001, China
    2 Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning 530001, China
    3 Jinhua Advanced Research Institute, Jinhua 321000, China
  • Received:2022-11-12 Revised:2022-12-20 Accepted:2023-01-07 Online:2023-07-01 Published:2023-07-01
  • Contact: Xuewen Zeng

摘要:

高血压是一种低度炎症状态的疾病, 通常伴有心脏炎症。芒果苷(MGF)是一种天然糖基蒽酮, 具有很强的抗炎活性。然而, MGF对高血压患者心脏炎症损伤的作用尚不清楚。本文研究MGF对自发性高血压大鼠(SHRs)心脏炎症损伤的保护作用及其机制。采用10周龄雄性SHRs和10周龄正常雄性Wistar-Kyoto (WKY)大鼠, 对SHRs使用10、20、40 mg/kg剂量的MGF, 连续8周。测量其收缩压(SBP)水平, 采集心脏组织进行形态学、免疫组化、ELISA、western blot和实时反转录PCR分析。结果表明模型组大鼠收缩压水平均较对照组显著升高, SHRs自发升高收缩压水平, 各剂量MGF对收缩压水平无显著影响。模型组大鼠心脏组织形态学结果显示有明显的炎症性损伤, MGF对这种损伤有显著的抑制作用。同时, MGF显著抑制了SHRs IL-6和TNF-α含量的升高。此外, MGF还显著抑制了SHRs MCP-1、CCR2蛋白以及其mRNA表达的增加。研究表明MGF并不会降低SHRs大鼠的SBP水平, 但MGF对SHRs大鼠的心脏炎症损伤具有保护作用, 这可能是因为MGF部分抑制了MCP-1/CCR2信号通路表达的原因。

关键词: 一, 芒果苷, MCP-1/CCR2信号通路, 心脏

Abstract:

Hypertension is a low-grade inflammation state of the disease and often complicated by inflammation of the heart. Mangiferin (MGF), which is a natural glucosyl xanthone, has a strong anti-inflammatory activity. However, the effects of MGF on cardiac inflammatory injury in hypertension remain unclear. In the present study, we investigated the protective effects and mechanisms of MGF on cardiac inflammatory injury in spontaneously hypertensive rats (SHRs). Briefly, 10-week-old male SHRs and 10-week-old male normotensive Wistar-Kyoto (WKY) rats were used. MGF was used in SHRs at doses of 10, 20, and 40 mg/kg for 8 weeks consecutively. The systolic blood pressure (SBP) level was measured, and the cardiac tissues were collected for morphology, immunohistochemistry, ELISA, Western blotting analysis, and real-time reverse transcription PCR (RT-PCR) analysis. The results showed that the SBP level was increased significantly in the model group compared with the control group both before and after intragastric administration, the SHRs increased the SBP level spontaneously, and all doses of MGF showed no significant effect on the SBP level. Cardiac histomorphology showed that there was an apparent inflammatory injury in the model group. MGF significantly inhibited this injury. Meanwhile, MGF significantly inhibited the increased abundance of IL-6 and TNF-α in SHRs. Furthermore, MGF also significantly inhibited the increased expressions of MCP-1 and CCR2 at the protein and mRNA levels in SHRs. In conclusion, this study demonstrated that MGF did not decrease the SBP level of SHRs. However, MGF had a protective effect on cardiac inflammatory injury in SHRs, which might be mediated partly by inhibiting the expression of the MCP-1/CCR2 signaling pathway.

Key words: Mangiferin, MCP-1/CCR2 Signaling Pathway, Cardiac

Supporting: