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Lipid profile, lipase and glutathione peroxidase activities in the serum of patients with atherosclerosis

机译:动脉粥样硬化患者血清中的脂质谱,脂肪酶和谷胱甘肽过氧化物酶活性

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The imbalance between enzyme activities and lipid concentrations may play a significant role amongst various risk factors involved in the development and progression of atherosclerosis. We investigated the total, HDL-, LDL-cholesterol, triacylglycerol (TAG) and malondialdehyde (MDA) concentrations, as well as the glycerol ester hydrolase (GEH)&eguals;lipase and glutathione peroxidase (GPx) activities in men with atherosclerosis. In addition, we calculated the enzymes metabolic activity, being a quotient of the lipase catalytic activity/triacylglycerol concentration (GEH/TAG), and GPx/GEH ratio. Mean MDA concentrations were significantly higher and those of glutathione peroxidase activitiy lower in atherosclerotic men, in comparison with the control group. Moreover, the activity of glutathione peroxidase was significantly negatively correlated with TAG concentrations (r≥-0.58 and T-C (total cholesterol) r≥-0.48. The HDL-cholesterol level was reduced but the LDL-C/HDL-C ratio and TAG concentrations were increased in men with atherosclerosis, in comparison with controls. We observed no difference in lipase activitiy between the groups but the GPx/GEH ratio was decreased in men with atherosclerosis. The relatively high levels of TAG and lipase, along with the increased MDA concentration, as well as the reduction in the activity of glutathione peroxidase may favour the formation of free radicals responsible for the damage of the endothelium, leading towards atherosclerosis.
机译:酶活性和脂质浓度之间的不平衡可能在涉及动脉粥样硬化发生和发展的各种危险因素中起重要作用。我们调查了患有动脉粥样硬化的男性的总HDL-,LDL-胆固醇,三酰基甘油(TAG)和丙二醛(MDA)浓度以及甘油酯水解酶(GEH)和脂肪酶和谷胱甘肽过氧化物酶(GPx)的活性。另外,我们计算了酶的代谢活性,它是脂肪酶催化活性/三酰基甘油浓度(GEH / TAG)和GPx / GEH比的商。与对照组相比,动脉粥样硬化男性的平均MDA浓度明显较高,而谷胱甘肽过氧化物酶的活性较低。此外,谷胱甘肽过氧化物酶的活性与TAG浓度呈显着负相关(r≥-0.58和TC(总胆固醇)r≥-0.48。与对照组相比,动脉粥样硬化男性的脂肪酶活性增加,我们发现两组之间的脂肪酶活性没有差异,但是动脉粥样硬化男性的GPx / GEH比降低了; TAG和脂肪酶的水平相对较高,MDA浓度升高以及谷胱甘肽过氧化物酶活性的降低可能促进自由基的形成,这些自由基负责内皮的损伤,从而导致动脉粥样硬化。

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