首页> 外文期刊>The Journal of Nutritional Biochemistry >Inducing gene expression of cardiac antioxidant enzymes by dietary phenolic acids in rats.
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Inducing gene expression of cardiac antioxidant enzymes by dietary phenolic acids in rats.

机译:日粮酚酸诱导大鼠心脏抗氧化酶基因表达。

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An increase in oxidative stress is suggested to be intimately involved in the pathogenesis of heart failure. Phenolic acids are widespread in plant foods; they contain important biological and pharmacological properties. This study evaluated the role of phenolic acids on the expression of antioxidant enzymes in the heart of male Sprague-Dawley rats. Gallic acid, ferulic acid and p-coumaric acid at a dosage of 100 mg kg-1 body weight significantly increased the activities of cardiac superoxide dismutase, glutathione peroxidase (GPx) and catalase (CAT) as compared with control rats (P<.05). The changes in cardiac CuZnSOD, GPx and CAT mRNA levels induced by phenolic acids were similar to those noted in the enzyme activity levels. A significant (P<.05) increase in the GSH/GSSG ratio was observed in the heart of phenolic acid-treated rats. The heart homogenates obtained from rats that were administered phenolic acids displayed significant (P<.05) increases in capacity for oxygen radical absorbance compared with control rats. Immunoblot analysis revealed the increased cardiac total level of Nrf2 in phenolic acid-treated rats. Interestingly, phenolic acid-mediated antioxidant enzyme expression was accompanied by up-regulation of heme oxygenase-1. This study demonstrates that antioxidant enzymes in rat cardiac tissue can be significantly induced by phenolic acids following oral administration. All rights reserved, Elsevier.
机译:氧化应激的增加被认为与心力衰竭的发病机理密切相关。酚酸广泛存在于植物食品中。它们具有重要的生物学和药理特性。这项研究评估了酚酸对雄性Sprague-Dawley大鼠心脏中抗氧化酶表达的作用。与对照组相比,体重为100 mg kg-1的没食子酸,阿魏酸和对香豆酸显着增加了心脏超氧化物歧化酶,谷胱甘肽过氧化物酶(GPx)和过氧化氢酶(CAT)的活性(P <.05 )。酚酸诱导的心脏CuZnSOD,GPx和CAT mRNA水平的变化与酶活性水平相似。在酚酸治疗的大鼠心脏中,GSH / GSSG比值显着增加(P <.05)。与对照组大鼠相比,从服用酚酸的大鼠中获得的心脏匀浆显示出明显的(P <.05)氧自由基吸收能力增强。免疫印迹分析显示,酚酸治疗的大鼠心脏总Nrf2水平升高。有趣的是,酚酸介导的抗氧化酶表达伴随着血红素加氧酶-1的上调。这项研究表明,口服给药后酚酸可明显诱导大鼠心脏组织中的抗氧化酶。保留所有权利,Elsevier。

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