Yayama Katsutoshi, Okamoto Hiroshi
Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University, Minatojima 1-1-3, Chuo-ku, Kobe 650-8586, Japan.
Int Immunopharmacol. 2008 Feb;8(2):312-8. doi: 10.1016/j.intimp.2007.06.012. Epub 2007 Jul 19.
Angiotensin II (Ang II) plays important roles in the regulation of cardiovascular functions and diseases mainly via the type 1 (AT1) receptor. In contrast, recent studies have shown that the actions of Ang II via the type 2 (AT2) receptor are counter-regulatory to those mediated via the AT1 receptor. Using an animal model of hypertension, we have demonstrated that Ang II produces a vasodilator effect through the AT2 receptor via the bradykinin (BK)-dependent activation of endothelial nitric oxide (NO) synthase. In this review, we focus on the role of BK and NO in AT2-receptor-mediated vasodilation.
血管紧张素II(Ang II)主要通过1型(AT1)受体在心血管功能调节和疾病发生中发挥重要作用。相比之下,最近的研究表明,Ang II通过2型(AT2)受体所产生的作用与通过AT1受体介导的作用具有反向调节关系。利用高血压动物模型,我们已经证明,Ang II通过缓激肽(BK)依赖性激活内皮型一氧化氮合酶,经AT2受体产生血管舒张作用。在这篇综述中,我们重点关注BK和NO在AT2受体介导的血管舒张中的作用。
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