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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Endothelium-derived hyperpolarizing factor ： ウィキペディア英語版 Endothelium-derived hyperpolarizing factor In blood vessels Endothelium-Derived Hyperpolarizing Factor or EDHF is proposed to be a substance and/or electrical signal that is generated or synthesized in and released from the endothelium; its action is to hyperpolarize vascular smooth muscle cells, causing these cells to relax, thus allowing the blood vessel to expand in diameter. ==Introduction== The endothelium maintains vascular homeostasis through the release of active vasodilators. Although Nitric Oxide (NO) is recognized as the primary factor at level of arteries, increased evidence for the role of another endothelium-derived vasodilator known as endothelium-derived hyperpolarizing factor (EDHF) has accumulated in the last years. Experiments show that when NO and Prostacyclin (Vasodilators) are inhibited there is still another factor causing the vessels to dilate〔 Despite the ongoing debate of its intriguingly variable nature and mechanisms of action, the contribution of EDHF to the endothelium-dependent relaxation is currently appreciated as an important feature of “healthy” endothelium. Since EDHF's contribution is greatest at level of small arteries, the changes in the EDHF action are of critical importance for the regulation of organ blood flow, peripheral vascular resistance, and blood pressure, and in particular when production of NO is compromised. Moreover, depending on the type of cardiovascular disorders altered, EDHF responses may contribute to, or compensate for, endothelial abnormalities associated with pathogenesis of certain diseases. It is widely accepted EDHF plays an important role in vasotone, especially in micro vessels. Its effect varies, depending on the size of the vessel.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Endothelium-derived hyperpolarizing factor」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.