scholarly journals The Pro-Oxidant Activity of Red Wine Polyphenols Induces an Adaptive Antioxidant Response in Human Erythrocytes

Antioxidants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 800
Author(s):  
Idolo Tedesco ◽  
Carmela Spagnuolo ◽  
Gian Luigi Russo ◽  
Maria Russo ◽  
Carmen Cervellera ◽  
...  

The protective effect of dealcoholized red wine on human health has been partially associated with its polyphenolic components, suggesting that the pool of polyphenols, including flavonoids and anthocyanins, can be responsible for the functional effects of this beverage. We hypothesize a new role of red wine polyphenols (RWp) in modulating the antioxidant potential of erythrocytes, protecting them against oxidative stress. We previously demonstrated that RWp activated the Plasma Membrane Redox System (PMRS), which is involved in neutralizing plasma free radicals. Here, we investigated the underlying mechanism triggered by RWp in the activation of PMRS via the involvement of GSH. Hence, treatment of human erythrocytes with RWp (73 μg/mL Gallic Acid Equivalents) increased GSH intracellular concentration, which depends upon the activation of glutathione reductase (GR) and glucose-6-phosphate dehydrogenase (G6PD), whose enzymatic activities increase of about 30% and 47%, respectively. Changes in the GSH pathway induced by RWp were associated with a slight but significant increase in reactive oxygen species (ROS). We conclude that the pro-oxidant effect of RWp promoted an adaptive stress response in human erythrocytes, which enhances their antioxidant defense.

2013 ◽  
Vol 4 (10) ◽  
pp. 1452 ◽  
Author(s):  
Lovro Ziberna ◽  
Jong-Hun Kim ◽  
Cyril Auger ◽  
Sabina Passamonti ◽  
Valérie Schini-Kerth

2009 ◽  
Vol 51 (2-3) ◽  
pp. 140-146 ◽  
Author(s):  
Modou Oumy Kane ◽  
Eric Anselm ◽  
Yanna Dantas Rattmann ◽  
Cyril Auger ◽  
Valérie B. Schini-Kerth

2006 ◽  
Vol 44 (6) ◽  
pp. 898-902 ◽  
Author(s):  
M.-J. Kim ◽  
Y.-J. Kim ◽  
H.-J. Park ◽  
J.-H. Chung ◽  
K.-H. Leem ◽  
...  

2008 ◽  
Vol 45 (5) ◽  
pp. 386-394 ◽  
Author(s):  
Allison Walter ◽  
Nelly Etienne-Selloum ◽  
Mamadou Sarr ◽  
Modou Oumy Kane ◽  
Alain Beretz ◽  
...  

2009 ◽  
Vol 459 (5) ◽  
pp. 671-679 ◽  
Author(s):  
Modou O. Kane ◽  
Nelly Etienne-Selloum ◽  
Soccoro V. F. Madeira ◽  
Mamadou Sarr ◽  
Allison Walter ◽  
...  

2013 ◽  
Vol 60 (1) ◽  
pp. 27-33 ◽  
Author(s):  
E. Kurin ◽  
N. Fakhrudin ◽  
M. Nagy

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.


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