Distribution of urocortins and corticotropin-releasing factor receptors in the cardiovascular system.

Distribution of urocortins and corticotropin-releasing factor receptors in the cardiovascular system.
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DOI:
10.1155/2012/395284
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发表时间:
2012
影响因子:
2.8
通讯作者:
Takahashi K
Takahashi K
中科院分区:
医学4区
文献类型:
--
作者:
Takahashi K

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尾皮质素是尾加压素I的人类同系物,尾加压素I是一种从尾垂体分泌的鱼促肾上腺皮质激素释放因子(CRF)样肽。在哺乳动物中有三种尿皮质素:尿皮质素1、尿皮质素2和尿皮质素3。我们已经表明,urocortin 1和urocortin 3是内源性合成的心肌细胞中的人心脏,并可能对CRF 2型受体(CRFR 2)在心脏中表达的作用。心力衰竭患者心脏中尿皮质素1的表达水平和血浆尿皮质素1水平升高。最近的研究表明,尿皮质素在心血管系统中具有各种生物学作用,例如血管扩张作用、正性肌力作用、针对缺血/再灌注损伤的心脏保护作用、以及针对肾素血管紧张素系统和交感神经系统的抑制作用。因此,尿皮质素和CRFR 2可能是心血管疾病,如充血性心力衰竭,高血压和心肌梗死的潜在治疗靶点。
Urocortins are human homologues of urotensin I, a fish corticotropin-releasing-factor- (CRF-) like peptide secreted from the urophysis. There are three urocortins: urocortin 1, urocortin 2, and urocortin 3 in mammals. We have shown that urocortin 1 and urocortin 3 are endogenously synthesized in the myocardial cells of human heart and may act on CRF type 2 receptor (CRFR2) expressed in the heart. Expression levels of urocortin 1 in the heart and plasma urocortin 1 levels are elevated in patients with heart failure. Recent studies have shown that urocortins have various biological actions in the cardiovascular system, such as a vasodilator action, a positive inotropic action, a cardioprotective action against ischemia/reperfusion injury, and suppressive actions against the renin angiotensin system and the sympathetic nervous system. Urocortins and CRFR2 may therefore be a potential therapeutic target for cardiovascular diseases, such as congestive heart failure, hypertension, and myocardial infarction.
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