Alcohol-free red wine inhibits isoproterenol-induced cardiac remodeling in rats by the regulation of Akt1 and protein kinase C α/β II

Anita Palfi, Eva Bartha, Laszlo Copf, Laszlo Mark, Ferenc Gallyas, Balazs Veres, Endre Kalman, Laszlo Pajor, Kalman Toth, Robert Ohmacht, Balazs Sumegi

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

There is increasing evidence that moderate consumption of red wine containing high amount of polyphenols and anthocyanins is associated with decreased incidence of cardiovascular morbidity and mortality. Therefore, we hypothesized that cardiac hypertrophy and fibrosis as well as Akt (protein kinase B, PKB) and protein kinase C (PKC) cascades can be beneficially influenced by an alcohol-free red wine (AFRW) extract rich in 14 types of polyphenols and 4 types of anthocyanins during cardiac remodeling. To test this assumption, rats were treated with isoproterenol (ISO) to induce postinfarction remodeling and were given tap water or AFRW ad libitum for 8 weeks. Control rats received vehicle instead of ISO. Heart mass/body mass and ventricle mass/body mass ratios, diameter of cardiomyocytes, phosphorylation of PKC α/β II and protein kinase B/Akt, and deposition of collagen type III were determined from the hearts of all four groups of rats. All measured gravimetric parameters, myocyte diameters and the amount of collagen type III decreased, and the phosphorylation of PKC α/β II was reduced in the ISO+AFRW group compared to the ISO group. AFRW induced activation of Akt, one of the best characterized cytoprotective pathways even without ISO treatment, and this activation was further increased in the ISO+AFRW group. These data suggest that AFRW treatment has a protective effect on hearts undergoing postinfarction remodeling by repressing hypertrophy-associated increased phosphorylation of PKC alpha/beta II and by activating Akt, providing a molecular mechanism for the cardioprotective effect of red wine polyphenols.

Original languageEnglish
Pages (from-to)418-425
Number of pages8
JournalJournal of Nutritional Biochemistry
Volume20
Issue number6
DOIs
Publication statusPublished - Jun 1 2009

Keywords

  • Alcohol-free red wine
  • Cardiac fibrosis
  • Cardiac remodeling
  • Intracellular signaling pathways

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Molecular Biology
  • Nutrition and Dietetics
  • Clinical Biochemistry

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