首页> 外文期刊>The Journal of Nutritional Biochemistry >COX-2 expression in cystic kidneys is dependent on dietary n-3 fatty acid composition
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COX-2 expression in cystic kidneys is dependent on dietary n-3 fatty acid composition

机译:胆囊肾脏中COX-2的表达取决于饮食中n-3脂肪酸的组成

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摘要

Dietary n-3 fatty acids generally attenuate elevated cyclooxygenase-2 (COX-2) levels in disease states. However, models of renal cystic disease (RCD) exhibit reduced renal COX-2 expression. Therefore, the in vivo regulation of COX-2 expression by dietary n-3 fatty acids was examined. In archived tissues from dietary studies, COX-2 protein and gene expression was up-regulated in diseased pcy mouse and Han:SPRD-cy rat kidneys when given diets containing eicosapentaenoic acid (EPA) and/or docosahexaenoic acid (DHA), but not those containing alpha-linolenic acid (ALA), compared to control diets with linoleic acid (LA). The presence of disease was necessary to elicit these effects as COX-2 expression was unaltered by diet in normal kidneys. The effects were specific for COX-2, since COX-1 levels were unaltered by these dietary manipulations in either model. Thus, in RCD, diets containing EPA and DHA but not ALA appear to specifically up-regulate renal COX-2 gene and protein levels in vivo.
机译:饮食中的n-3脂肪酸通常会减弱疾病状态下升高的环氧合酶2(COX-2)水平。但是,肾囊性疾病(RCD)模型表现出降低的肾脏COX-2表达。因此,研究了饮食中n-3脂肪酸对COX-2表达的体内调节。在饮食研究的存档组织中,当给与含有二十碳五烯酸(EPA)和/或二十二碳六烯酸(DHA)的饮食时,患病的小白鼠和Han:SPRD-cy大鼠肾脏中的COX-2蛋白和基因表达上调。与含有亚油酸(LA)的对照饮食相比,含有α-亚麻酸(ALA)的那些。在正常肾脏中,饮食的存在不会改变COX-2的表达,因此疾病的存在是引起这些效应的必要条件。这些作用对COX-2特有,因为在任何一个模型中,这些饮食操作都不会改变COX-1的水平。因此,在RCD中,含有EPA和DHA但不含ALA的饮食似乎在体内特异性上调了肾脏COX-2基因和蛋白质水平。

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