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Journal of Chinese Pharmaceutical Sciences ›› 2023, Vol. 32 ›› Issue (6): 460-472.DOI: 10.5246/jcps.2023.06.039

• Original articles • Previous Articles     Next Articles

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

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

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