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Resveratrol is widely known for its renowned beneficial biological effects, namely involving its chemopreventive and antioxidant properties. However, some studies have documented that it may behave as a pro-oxidizing agent; thus, paradoxically, it may also have implication in pathology of several diseases.
Resveratrol antioxidant potential has been attributed to its ROS-scavenging capacity and to an up regulation capacity on cells antioxidant defense. Studies have reported that resveratrol could act as a signaling molecule within tissues and cells in modulating genes and proteins expression through redox-sensitive intracellular pathways activation. Thus, cell tolerance against oxidative environment could be attributed to gene expression changes and to a raise in antioxidant defense systems action and synthesis, which eventually results in cell survival and adaptation . Moreover, depending on enzymatic reactions conditions, resveratrol can be (auto-)oxidized to generate semiquinones and relatively stable 4′-phenoxyl radical, finally leading to ROS production. Such polyphenols’ oxidative reactions are influenced by pH and presence of hydroxyl anions or organic bases.
A study carried out by Martins et al. revealed that resveratrol can modulate different pathways at a time, which can result in distinct and even opposite biological effects, depending on its concentration or treatment time defined. The authors documented that, although a dose-dependent resveratrol pro-oxidative effect leads to cells oxidative stress over lesser time exposure, at same dose but with an increase in exposure time, less expressive cytotoxicity was found. This suggest that surviving cells seemed to be more resistant to resveratrol-induced damages, being its effects attenuated over treatment time. Additionally, low resveratrol doses (0.1–1.0 μg/mL) has been documented to enhance cell proliferation, whereas higher doses (10.0–100.0 μg/mL) induces apoptosis and decreases mitotic activity on human tumors and endothelial cells]. Recently, dual resveratrol pattern effects on HT-29 colon cancer cells death and proliferation were observed, where at low concentrations (1 and 10 μmol/L), resveratrol increased cells number, while at higher doses (50 or 100 μmol/L) resveratrol reduced cells number and increased apoptotic or necrotic cells percentage.
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Biomedicines
Author Info
1Medical Ethics and Law Research Center, Shahid Beheshti University of Medical Sciences, Tehran 88777539, Iran;
2Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran 22439789, Iran
3Department of Pharmaceutical Chemistry, H. N. B. Garhwal (A Central) University, Srinagar Garhwal 246174, Uttarakhand, India;
4Department of Biochemistry, H. N. B. Garhwal (A Central) University, Srinagar Garhwal 246174, Uttarakhand, India;
5Gazi University Faculty of Pharmacy Department of Pharmacognosy, Ankara 06330, Turkey; (B.S.);(M.K.)
6Department of Medical Parasitology, Zabol University of Medical Sciences, Zabol 61663335, Iran
7Antimicrobial and Biocontrol Agents Unit, Department of Biochemistry, Faculty of Science, University of Yaounde 1, Ngoa Ekelle, Annex Fac. Sci, P.O. Box. 812, Yaounde-Cameroon.
8Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, Porto 4200-319, Portugal
9Institute for Research and Innovation in Health (i3S), University of Porto, Porto 4200-135, Portugal
10Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran 11369, Iran
11Department of Chemistry, Richardson College for the Environmental Science Complex, The University of Winnipeg, Winnipeg, MB R3B 2G3, Canada
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164842/
(All these Articles can be read from this URL: )
https://markethive.com/group/ama/blog/the-role-of-resveratrol-in-achieving-optimal-health-p5
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