Anti-Inflammatory and Antioxidant Effects of White Grape Pomace Polyphenols on Isoproterenol-Induced Myocardial Infarction

Grape pomace (GP), the residue left after grape pressing in winemaking, is rich in polyphenols, including flavonoids, tannins, and phenolic acids, which have antioxidant and anti-inflammatory properties. The present study aimed to evaluate the cardioprotective effects of white grape pomace (WGP) extract in two concentrations rich in polyphenols (795 mg polyphenols from WGP/kg body weight (bw) and 397.5 mg polyphenols from WGP/kg bw)), on isoproterenol (ISO)-induced myocardial infarction (MI), focusing on its anti-inflammatory and antioxidant effects. White grape pomace administration for 14 days offered a cardio-protective effect and prevented prolongation of the QT and QTc intervals on the electrocardiogram. Both concentrations of WGP prevented the elevation of nitric oxide (NO) and malondialdehyde (MDA) in the serum, with the best results being observed for the highest concentration (p < 0.05). White grape pomace administration offered a reduction in pro-inflammatory cytokines such as tumor necrosis factor alpha (TNF-α), interleukin 6 (IL-6), and interleukin 1β (IL-1β) in both serum and tissue in a dose-dependent manner, with the highest WGP concentration having the best effect (p < 0.05). Moreover, WGP reduced histological changes associated with MI. The findings of the present study demonstrate that WGP extract exerts cardio protective effects by reducing MI-associated inflammation and oxidative stress.

• Publication year

  2025

• Venue

  International Journal of Molecular Sciences

• Publication date

  2025-02-26

• Fields of study

  Medicine, Environmental Science

• Identifiers
  DOI 10.3390/ijms26052035PMID 40076654PMCID 11900020
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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