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首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Whole-cell and nuclear NADPH oxidases levels and distribution in human endocardial endothelial, vascular smooth muscle, and vascular endothelial cells
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Whole-cell and nuclear NADPH oxidases levels and distribution in human endocardial endothelial, vascular smooth muscle, and vascular endothelial cells

机译:全细胞和核NADPH氧化酶水平和分布人体内膜内皮,血管平滑肌和血管内皮细胞

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The results of our study show that whole-cell and nuclear levels of NADPH oxidase-1 (NOX1) are similar in human vascular endothelial cells (hVECs) and smooth muscle cells (hVSMCs), but lower in human endocardial endothelial cells (hEECs). NOX2 levels were higher in hVECs and lower in hVSMCs. NOX3 levels were the same in hVECs and hVSMCs, but lower in hEECs. NOX4 levels were similar in all of the cell types. NOX4 levels were higher in hVECs than in hVSMCs. NOX5 was also present throughout the 3 cell types, including their nuclei, in the following order: hEECs hVSMCs hVECs. The level of basal reactive oxygen species (ROS) was highest in hVECs and lowest in hVSMCs. However, the Ca2+ level was highest in hVSMCs and lowest in hVECs. These findings suggest that all types of NOXs exist in hEECs, hVECs, and hVSMCs, although their density and distribution are cell-type dependent. The density of the different NOXs correlated with the ROS level, but not with the Ca2+ level. In conclusion, NOXs, including NOX3, exist in cardiovascular cells and their nuclei. The nucleus is a major source of ROS generation. The nuclear NOXs may contribute to ROS and Ca2+ homeostasis, which may affect cell remodeling, including the formation of nuclear T-tubules in vascular diseases and aging.
机译:我们的研究结果表明,NADPH氧化酶-1(NOX1)的整个细胞和核水平在人血管内皮细胞(HVEC)和平滑肌细胞(HVSMC)中相似,但人体内膜内皮细胞(HEEC)下降。 HVECs中的NOx2水平较高,HVSMCs较低。 HVECS和HVSMC的NOX3水平相同,但HEECS中较低。所有细胞类型中的NOx4水平相似。 HVECs的NOx4水平高于HVSMCs。在整个3个细胞类型中也存在NOX5,包括他们的核,以下顺序:Heecs& HVSMCS& HVEC。基础反应性氧(ROS)的水平在HVEC中最高,HVSMC中最低。但是,CA2 +水平在HVSMC中最高,HVEC中最低。这些研究结果表明,所有类型的NOx都存在于HEECS,HVEC和HVSMC中,尽管它们的密度和分布是依赖的细胞类型。不同NOx的密度与ROS水平相关,但不是CA2 +水平。总之,NOx,包括NOX3,存在于心血管细胞和它们的核中。核心是ROS生成的主要来源。核NOxs可能有助于ROS和CA2 +稳态,这可能影响细胞重塑,包括在血管疾病和老化中形成核T细分。

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