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- W3095987079 abstract "The content of products of lipoperoxidation and oxidative modification of proteins in rat blood plasma under the action of quercetin and histamine was investigated. Quercetin was used at concentrations of 0.1; 0.3; 0.5; 1; 3; 5 mm, and histoma - 0.01; 0.1; 1; 10 μm. It was found that quercetin in the blood plasma of rats causes a slight increase in the content of hydroperoxides and TBA-positive products, except the concentration of 0.5 mm, at which the content of secondary products is reduced and the content of primary remains within the control. Histamine at concentrations of 0.01; 0.1; 1; 10 µM leads to an increase in the content of hydroperoxides and a decrease in the number of TBK-positive products. The combined effect of histamine and quercetin causes a significant increase in primary lipoperoxidation products, whereas TBK-positive lipid peroxidation products decrease. Quercetin in the concentration range of 0.1÷1 mM intensifies the accumulation of carbonyl groups of proteins of basic and neutral nature, while flavonoid at concentrations of 3.5 mM – slows down. Histamine at all tested concentrations leads to an increase in the content of carbonyl groups of proteins, except the concentration of 0.1 μm. Against the background of high concentration histamine, quercetin reduces the intensity of oxidative modification of proteins. The simultaneous action of low concentration histamine and quercetin at a concentration of 0.5 and 5 mm leads to the accumulation of carbonyl groups of proteins of a neutral nature, as well as to the main only when exposed to quercetin at a concentration of 5 mm. According to the analysis of variance, it was found that quercetin has a maximum effect on the accumulation of TBA-positive products and carbonyl groups of proteins of basic character. Histamine is strongly influenced by the accumulation of lipid hydroperoxides. Quercetin at concentrations of 0.1; 0.3; 0.5; 1; 3 mm determines between the indices of free radical processes under study, in the blood plasma of rats, a strong interconnectedness, and a bioflavonoid at a concentration of 5 mm leads to the formation of interconnections of average strength. Histamine at concentrations of 10; 1; 0.1 µM causes a close correlation of the mean strength between the individual indices of free radical oxidation. Histamine at a concentration of 0.01 μm causes a significant increase in the correlation between the parameters of sex and oxidative modification of proteins. The combined effect of quercetin at a concentration of 0.1 mm and histamine at a concentration of 0.01 μm causes a change in the nature of the correlation dependence, which becomes strong between most of the studied parameters." @default.
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- W3095987079 date "2020-11-03" @default.
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- W3095987079 title "Intensity of free-radical processes in plasma of rat blood due to histamine and quercetin" @default.
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- W3095987079 doi "https://doi.org/10.30970/vlubs.2020.82.03" @default.
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