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首页> 外文期刊>Biochemical and Biophysical Research Communications >Palmitic acid-induced activation of human T-lymphocytes and aortic endothelial cells with production of insulin receptors, reactive oxygen species, cytokines, and lipid peroxidation.
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Palmitic acid-induced activation of human T-lymphocytes and aortic endothelial cells with production of insulin receptors, reactive oxygen species, cytokines, and lipid peroxidation.

机译:棕榈酸诱导人T淋巴细胞和主动脉内皮细胞的活化,并产生胰岛素受体,活性氧,细胞因子和脂质过氧化作用。

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摘要

Diabetic conditions are associated with hyperglycemia and hyperlipidemia, but the role of saturated fatty acids (SFA) vs. unsaturated fatty acids (UFA) in activation of T-lymphocytes and human aortic endothelial cells (HAEC) is not known. We investigated in vitro effects of various concentrations of SFA (palmitate) and UFA (oleic, linoleic, linolenic, and arachidonic) acids in activation of these cells. These cells in presence of palmitate, but not UFA, exhibited time, and concentration-dependent emergence of insulin receptors, GLUT 4 expression, generation of ROS, cytokines, lipid peroxidation, and IRS-1. We conclude that both T-lymphocytes and HAEC share common characteristics in exhibiting activation of these cells to palmitate, but not to UFA, by developing insulin receptors and becoming insulin responsive tissues, a hitherto unknown response to palmitate. We hypothesize that these events may serve as protective defense mechanisms against acute effects of glucotoxicity and lipotoxicity in these cells.
机译:糖尿病与高血糖和高血脂有关,但尚不了解饱和脂肪酸(SFA)与不饱和脂肪酸(UFA)在T淋巴细胞和人主动脉内皮细胞(HAEC)活化中的作用。我们研究了不同浓度的SFA(棕榈酸酯)和UFA(油酸,亚油酸,亚麻酸和花生四烯酸)在这些细胞激活中的体外作用。这些存在棕榈酸酯而不是UFA的细胞表现出时间和胰岛素受体浓度依赖性的出现,GLUT 4表达,ROS的产生,细胞因子,脂质过氧化和IRS-1。我们得出的结论是,T淋巴细胞和HAEC在显示这些细胞活化为棕榈酸酯而不是UFA方面具有共同的特征,它们通过发展胰岛素受体并成为胰岛素反应性组织而成为迄今未知的对棕榈酸酯的应答。我们假设这些事件可能充当针对这些细胞中糖毒性和脂毒性的急性效应的保护性防御机制。

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