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European Pharmaceutical Journal

Acta Facultatis Pharmaceuticae Universitatis Comenianae (formerly)

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CiteScore 2016: 0.28

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2453-6725
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eNOS Promoter Activation by Red Wine Polyphenols: an Interaction Study

E. Kurin
  • Corresponding author
  • Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University, Bratislava, 832 32, Slovak Republic
  • Other articles by this author:
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/ N. Fakhrudin
  • Corresponding author
  • Department of Pharmaceutical Biology, Faculty of Pharmacy, Universitas Gadjah Mada, Sekip Utara, Yogyakarta, 55281, Indonesia
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ M. Nagy
  • Corresponding author
  • Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University, Bratislava, 832 32, Slovak Republic
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2013-06-27 | DOI: https://doi.org/10.2478/afpuc-2013-0013

Beneficial effects of red wine polyphenols on cardiovascular health are well known. The aim of our research was an interaction study of four red wine polyphenols – resveratrol (R), quercetin (Q), kaempferol (KF) and isorhamnetin (IR) of their ability to activate endothelial NO synthase (eNOS) promoter when used alone and in equimolar mixtures. To determine their activity, we performed a luciferase reporter gene assay on EA.hy926 cells stably transfected with a luciferase reporter gene construct containing eNOS promoter. The Bradford assay was also performed to account the cytotoxicity and/or the cell number differences. The median effect equation, as an interaction analysis evaluating synergy or antagonism of the combinations was done according to mass-action law principle. Isobolographic method was performed on selected double mixtures and dose reduction index was calculated for all mixtures. All single polyphenols activated eNOS promoter. The EC50 values were in micromolar concentrations ranging from 3.44 μM (R2 = 0.96) for kaempferol to 9.89 μM for isorhamnetin (R2 = 0.94). All mixtures activated eNOS promoter, but their interactions varied from synergy (Q+R, Q+IR+KF, Q+R+KF and Q+R+IR+KF), through additive (R+IR+KF) to antagonistic interaction (R+IR, R+KF, Q+IR, Q+KF, IR+KF and R+Q+IR). In this study, we show for the first time that red wine polyphenols activated eNOS promoter when used alone and in mixtures with different type of interactions.

Keywords : eNOS promoter; luciferase reporter gene assay; resveratrol; quercetin; kaempferol; isorhamnetin; interaction study

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About the article

Published Online: 2013-06-27


Citation Information: Acta Facultatis Pharmaceuticae Universitatis Comenianae, ISSN (Print) 0301-2298, DOI: https://doi.org/10.2478/afpuc-2013-0013.

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