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Abstract
The effect of polyphenolic bioactive substances, especially resveratrol (12.03 mg l−1), of an often consumed Hungarian red wine was investigated in a short term rat experiment. Male young Wistar albino rats were treated with high volumes of red wine (matching one bottle of wine/day for a 85 kg man) (N=5) and another alcoholic drink of the same alcohol concentration (N=5), corresponding to the circumstances of alcoholism, and 5 rats were in the control group. A total of 7 routine laboratory parameters were measured from the sera by kits. The changes of redox homeostasis (H-donor activity, induced chemiluminescence, diene-conjugates, GSHPx) were studied in blood plasma and/or in liver homogenates by spectrophotometric and luminometric methods. Transmethylation property of the liver was measured by overpressured layer chromatography (OPLC) technique. It was proven with in vitro OPLC analytical study that resveratrol reacted with methyl groups, and resveratrol was demonstrated to influence transmethylation processes as well as redox homeostasis. Red wine compounds do not protect from the harmful effects of alcohol, and even by high doses of resveratrol, the liver further deteriorates and the negative effect of alcohol increases. It has been confirmed that high doses of resveratrol do not provide protection against liver damage in those suffering from alcoholism.
Highlights
The effect of polyphenolic bioactive substances, especially resveratrol (12.03 mg l–1), of an often consumed Hungarian red wine was investigated in a short term rat experiment
Male young Wistar albino rats were treated with high volumes of red wine (N=5) and another alcoholic drink of the same alcohol concentration (N=5), corresponding to the circumstances of alcoholism, and 5 rats were in the control group
It has been confirmed that high doses of resveratrol do not provide protection against liver damage in those suffering from alcoholism
Summary
The effect of polyphenolic bioactive substances, especially resveratrol (12.03 mg l–1), of an often consumed Hungarian red wine was investigated in a short term rat experiment. Transmethylation property of the liver was measured by overpressured layer chromatography (OPLC) technique. It was proven with in vitro OPLC analytical study that resveratrol reacted with methyl groups, and resveratrol was demonstrated to influence transmethylation processes as well as redox homeostasis. Red wine compounds do not protect from the harmful effects of alcohol, and even by high doses of resveratrol, the liver further deteriorates and the negative effect of alcohol increases. The number of alcoholics and people suffering from diseases related to alcohol consumption increases in the world (HERBERT et al, 2017) despite that several studies have drawn the conclusion that biologically active antioxidant polyphenolic compounds, in particular flavonoids and stilbenes, found in red wine, have favourable physiological effects. Trans-resveratrol (resveratrol) reduces hazards of various cardiovascular diseases as well as cancer, diabetes, and so on (SZENDE et al, 2000; BRADAMANTE et al, 2004; CHIVA-BLANCH et al, 2013; MORENO-INDIAS et al, 2016; OH & SHAHIDI, 2018)
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