AT(1) receptors mediate pressor responses induced by angiotensin II in the periaqueductal gray area of rats

AT(1) receptors mediate pressor responses induced by angiotensin II in the periaqueductal gray area of rats
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DOI:
10.1016/s0024-3205(97)00362-7
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发表时间:
1997-05-30
期刊:
影响因子:
6.1
通讯作者:
Rossi, F
Rossi, F
中科院分区:
医学2区
文献类型:
--
作者:
DAmico, M;DiFilippo, C;Rossi, F

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将血管紧张素 II (ANGII)(0.01 至 1 nmol)显微注射到麻醉大鼠的导水管周围灰区 (FAG) 中,会引起剂量依赖性的血压升高。向 FAG 预注射(10 分钟前)氯沙坦(一种选择性非肽 AT(1) 受体拮抗剂;50 nmol)可减少对 ANGII 的加压反应,而 PD123319(一种选择性非肽 AT(2) 受体拮抗剂;50 nmol)不会影响 ANGII 诱导的高血压。因此,我们的数据表明,AT(1) 受体的激活而非 AT(2) 受体介导 ANGII 诱导的 FAG 区域血压变化。 (C) 1997 爱思唯尔科学公司。
Microinjection of angiotensin II (ANGII) (0.01 to 1 nmol) into the periaqueductal gray area (FAG) of anaesthetised rats caused dose-dependent increases in blood pressure. Preinjection (10 min before) of losartan (a selective non-peptide AT(1) receptor antagonist; 50 nmol) to the FAG reduced the presser response to ANGII whereas PD123319 (a selective non-peptide AT(2) receptor antagonist; 50 nmol) did not affect the ANGII-induced hypertension. Thus, our data suggest that the activation of AT(1) but not AT(2) receptors mediates ANGII-induced blood pressure changes in the FAG area. (C) 1997 Elsevier Science Inc.