Background.The accompanied role of Mas receptor (MasR), bradykinin (BK), and female sex hormone on renal blood flow (RBF)\nresponse to angiotensin 1-7 is not well defined.We investigated the role ofMasR antagonist (A779) and BK on RBF response to Ang\n1-7 infusion in ovariectomized estradiol-treated rats. Methods.Ovariectomized Wistar rats received estradiol (OVE) or vehicle (OV)\nfor two weeks. Catheterized animals were subjected to BK and A799 infusion and mean arterial pressure (MAP), RBF, and renal\nvascular resistance (RVR) responses to Ang 1-7 (0, 100, and 300 ng kgâË?â??1 minâË?â??1) were determined. Results. Percentage change of RBF\n(%RBF) in response to Ang1-7 infusion increased in a dose-dependentmanner. In the presence of BK, when MasR was not blocked,\n%RBF response to Ang 1-7 in OVE group was greater than OV group significantly (
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