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Injection of ANGII (0.01, 0.1 and 1 nmol/rat) into the periaqueductal gray (PAG) area significantly (P<0.01) increased, in a dose-dependent manner, the mean arterial blood pressure (MAP). The increases in blood pressure induced by ANGII (1 nmol; 37 +/- 4 mmHg, n=5) were greatly reduced (>85%) by pre-administration of the ET A receptor antagonist FR139317 (5 nmol/rat) to the PAG area,...
Microinjection of angiotensin II (ANGII) (0.01 to 1 nmol) into the periaqueductal gray area (PAG) 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 PAG reduced the pressor response to ANGII whereas PD123319 (a selective non-peptide AT 2 receptor antagonist;...
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