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- W1998692374 abstract "Inhibition of the renin-angiotensin system with an angiotensin-converting enzyme inhibitor (ACEi) is an effective therapy in hypertension. Vasopeptidase inhibition was initially proposed with compounds inhibiting both angiotensin-converting enzyme and neutral endopeptidase (omapatrilat), but clinical trials revealed that reducing angiotensin II while blocking the degradation of vasodilatory peptides was not without concerns. We have previously investigated the combination of an ACEi with an endothelin-converting enzyme inhibitor (ECEi); now we add a neutral endopeptidase inhibitor (NEPi) toward triple vasopeptidase inhibition. Male spontaneously hypertensive rats were surgically implanted with a vascular catheter and treated with an ACEi (benazepril), a NEPi (CGS 24592) and an ECEi (CGS 35066) (continuous intra-arterial infusion at 1 or 5 mg/kg/day x 5 days each). After 15 days, drugs administration was stopped for 3 days. ACEi (1 mg/kg per day) reduced the mean arterial blood pressure by 8.4%. The addition of a NEPi and an ECEi at the same dose did not shown any added benefit. The mean arterial blood pressure came back to baseline upon cessation of treatment. ACEi (5 mg/kg per day) reduced the mean arterial blood pressure by 28%. The mean arterial blood pressure remained attenuated by 21% and 19% with the addition of the NEPi and the ECEi. Again, the mean arterial blood pressure rose back to 148 +/- 4 mmHg following cessation of treatment. Daily biochemical and hematological analysis of plasma did not reveal any signs of toxicity, except for a rapid elevation in K (40%) after 1 day of ACEi. Thus, angiotensin II inhibition plays a primary role in controlling the blood pressure of spontaneously hypertensive whereas additional NEPi and ECEi did not provide further benefits under the present dose combinations. The normalizing effect of the higher dose of ACEi by itself made it impossible to discriminate the role of neutral endopeptidase and endothelin-converting enzyme-modulated peptides and to further define the paradigm of triple vasopeptidase inhibition toward better control of vascular hemodynamics. Additional studies are underway." @default.
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- W1998692374 date "2004-11-01" @default.
- W1998692374 modified "2023-09-23" @default.
- W1998692374 title "Triple Vasopeptidase Inhibition of Angiotensinconverting Enzyme/Neutral Endopeptidase/Endothelinconverting Enzyme Activities on the Hemodynamic Profile of Chronically Instrumented Unrestrained Conscious Spontaneously Hypertensive Rats" @default.
- W1998692374 doi "https://doi.org/10.1097/01.fjc.0000166293.79948.09" @default.
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