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首页> 外文期刊>Pharmacological research: The official journal of The Italian Pharmacological Society >Phenolics-rich extracts from Silybum marianum and Prunella vulgaris reduce a high-sucrose diet induced oxidative stress in hereditary hypertriglyceridemic rats.
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Phenolics-rich extracts from Silybum marianum and Prunella vulgaris reduce a high-sucrose diet induced oxidative stress in hereditary hypertriglyceridemic rats.

机译:从水飞蓟和夏枯草中富含酚类的提取物可减少遗传性高甘油三酯血症大鼠的高蔗糖饮食诱导的氧化应激。

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摘要

The study tested the effects of phenolics-rich extracts from the plants Silybum marianum (silymarin) and Prunella vulgaris (PVE) on blood and liver antioxidant status and lipoprotein metabolism. Hereditary hypertriglyceridemic rats fed on standard diet (STD) or high-sucrose diet (HSD, 70cal% of sucrose) for two weeks were used. HSD doubled plasma and liver triacylglycerol (TAG) and increased plasma VLDL-TAG and VLDL-cholesterol compared to STD. Administration of silymarin or PVE as 1% dietary supplements in HSD did not influence lipid levels in plasma or liver, but both extracts caused decrease in plasma VLDL-cholesterol levels. HSD-induced oxidative stress was manifested in increased TBARS and conjugated dienes (CD) content, decreased GSH levels and glutathione peroxidase (GPX) activity in blood and liver. In blood the activity of superoxide dismutase (SOD) decreased, whereas in liver the activity of catalase increased after HSD. Feeding on HSD containing phenolics-rich extracts resulted in reduction of TBARS and CD content and in increase of blood GPX activity and elevated GSH content in liver. Besides, silymarin increased the activity of SOD and level of GSH in blood. Catalase activity in blood or liver was not influenced by the presence of plant extracts in the diet. These results indicate that silymarin and PVE improve antioxidant status in blood and liver and positively affect plasma lipoprotein profile in an experimental model of dietary induced hypertriglyceridemia.
机译:该研究测试了植物中的水飞蓟(Silymarin)和夏枯草(PVEella)的富含酚类的提取物对血液和肝脏抗氧化状态以及脂蛋白代谢的影响。使用以标准饮食(STD)或高蔗糖饮食(HSD,70cal%的蔗糖)喂养两周的遗传性高甘油三酸酯大鼠。与STD相比,HSD使血浆和肝三酰甘油(TAG)倍增,血浆VLDL-TAG和VLDL-胆固醇增加。水飞蓟素或PVE作为HSD中1%的膳食补充剂的使用不会影响血浆或肝脏中的脂质水平,但两种提取物都会导致血浆VLDL-胆固醇水平降低。 HSD诱导的氧化应激表现为血液和肝脏中TBARS和共轭二烯(CD)含量增加,GSH水平降低以及谷胱甘肽过氧化物酶(GPX)活性降低。在血液中,超氧化物歧化酶(SOD)的活性下降,而在肝脏中,过氧化氢酶后过氧化氢酶的活性增加。饲喂含有富含酚的提取物的HSD会导致TBARS和CD含量降低,以及血液GPX活性增加和肝脏GSH含量升高。此外,水飞蓟素还可以增加血液中SOD的活性和GSH的水平。饮食中植物提取物的存在不会影响血液或肝脏中的过氧化氢酶活性。这些结果表明,在饮食诱导的高甘油三酯血症的实验模型中,水飞蓟素和PVE可改善血液和肝脏的抗氧化状态,并积极影响血浆脂蛋白谱。

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