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Title: Blood pressure lowering and renal hemodynamic effects of fosinopril in conscious animal models.
Author: DeForrest JM, Waldron TL, Harvey C, Scalese B, Mitch S, Powell JR, Petrillo W, Cushman DW.
Journal: J Cardiovasc Pharmacol; 1990 Jul; 16(1):139-46. PubMed ID: 1696656.
Abstract:
The blood pressure lowering and renal hemodynamic effects of fosinopril, the chemically novel inhibitor of angiotensin I converting enzyme (ACE), was assessed in conscious animal models. In conscious dogs, intravenous infusion of SQ 27,519 [0.5 mg/kg (1.1 mumol/kg) bolus plus 0.1 mg/kg/min (0.22 mumol/kg/min)], the active moiety of the prodrug fosinopril, increased PAH clearance and GFR by 25 and 16%, respectively (p less than 0.05, each) without changing arterial pressure (AP). Urine volume, sodium excretion, and potassium excretion were elevated, although not significantly increased. In sodium-depleted cynomolgus monkeys, 1.5 and 5.0 mumol/kg (0.88 and 2.9 mg/kg) p.o. of fosinopril lowered arterial pressure from 115 +/- 5 to 99 +/- 5 mm Hg and from 116 +/- 3 to 87 +/- 4 mmHg, respectively (p less than 0.05, each). When given orally to SHR at 10 and 30 mg/kg (5.9 and 17.6 mumol/kg), fosinopril lowered AP by 23 (183 +/- 4 to 160 +/- 5 mm Hg) and 20 mm Hg (176 +/- 4 to 156 +/- 4 mm Hg), respectively. The combination of fosinopril [10 mg/kg (5.9 mumol/kg)] plus hydrochlorothiazide (10 mg/kg) reduced AP from 206 +/- 4 to 167 +/- 2 mm Hg when given orally to SHR. Fosinopril was more effective in two-kidney, one-clip hypertensive rats relative to SHR; AP fell from 201 +/- 9 to 160 +/- 7 mm Hg after 10 mg/kg (5.9 mumol/kg), and from 205 +/- 7 to 145 +/- 7 mm Hg after 30 mg/kg (17.6 mumol/kg).(ABSTRACT TRUNCATED AT 250 WORDS)

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