Capturing the dynamics of systemic Renin-Angiotensin-Aldosterone System (RAAS) peptides heightens the understanding of the effect of benazepril in dogs

Journal of Veterinary Pharmacology and Therapeutics
J P MochelM Danhof

Abstract

In dogs, activation of the Renin-Angiotensin-Aldosterone System (RAAS) is an important feature of congestive heart failure (CHF). Long-term increases in angiotensin II (AII) and aldosterone (ALD) lead to the progression of heart failure to its end stage. Angiotensin-converting enzyme inhibitors (ACEIs) are the foremost therapeutic option in the management of CHF. Recent literature has challenged the efficacy of ACEIs, based on modest reduction in urinary aldosterone (UALD) excretion despite marked inhibition of ACE activity. This study was designed to heighten the understanding of the effect of benazepril, a potent ACEI, on the RAAS, using a low-sodium diet as an experimental model of RAAS activation. Time course profiles of RAAS peptides and related areas under the curve (AUC) were used for comparison between benazepril and placebo groups. Results indicated substantial changes in the dynamics of these biomarkers. At presumed benazeprilat steady state, significant differences in AUC of plasma renin activity (+90%), angiotensin I (+43%), and AII (-53%) were found between benazepril and placebo-treated dogs. ALD decreased by 73% in plasma but only by 5% in urine. In conclusion, despite modest reduction in UALD excretion, benazepr...Continue Reading

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Citations

Jun 16, 2016·Journal of Veterinary Pharmacology and Therapeutics·A PanteriJ N King
Jun 25, 2016·BMC Veterinary Research·Jonathan N KingCyril Desevaux
Feb 27, 2019·Journal of Veterinary Internal Medicine·Marisa K AmesBertram Pitt
Sep 13, 2012·Journal of Veterinary Pharmacology and Therapeutics·C E AtkinsS Y Gardner
Mar 19, 2021·Journal of the Renin-angiotensin-aldosterone System : JRAAS·Barbara SzczepankiewiczRobert Pasławski

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