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首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Neuropeptide Y (NPY) and NPY receptors in the cardiovascular system: implication in the regulation of intracellular calcium.
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Neuropeptide Y (NPY) and NPY receptors in the cardiovascular system: implication in the regulation of intracellular calcium.

机译:心血管系统中的神经肽Y(NPY)和NPY受体:暗示细胞内钙的调节。

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摘要

The 3-dimensional confocal microscopy technique has allowed us to identify the presence of yet another cardioactive factor and its receptor, namely neuropeptide Y (NPY) and its Y1 receptor, at the level of vascular smooth muscle cells and heart cells including endocardial endothelial cells (EECs). Using this technique, we also demonstrated that NPY is able to induce an increase in both cytosolic and nuclear calcium in all these cell types. Furthermore, besides being expressed at the level of EECs, NPY is also released from these cells following a sustained increase of intracellular Ca2+. This suggests the ability of NPY to contribute to the regulation of the excitation-secretion coupling of EECs and the excitation-contraction coupling of cardiomyocytes and vascular smooth muscle cells.
机译:3维共聚焦显微镜技术使我们能够在血管平滑肌细胞和心脏细胞(包括心内膜内皮细胞)的水平上鉴定出另一个心脏活性因子及其受体的存在,即神经肽Y(NPY)及其Y1受体( EECs)。使用这项技术,我们还证明了NPY能够在所有这些细胞类型中诱导胞质钙和核钙的增加。此外,除了在EECs水平上表达外,NPY在细胞内Ca2 +持续增加后也从这些细胞中释放出来。这表明NPY有能力调节EEC的兴奋-分泌偶联以及心肌细胞和血管平滑肌细胞的兴奋-收缩偶联。

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