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2004•PharmacologyRequires access

Comparative Effects of Quinapril with Enalapril in Rats with Heart Failure

Kenichi Watanabe, Meilei Ma, Juan Wen, Hitoshi Tachikawa, Makoto Kodama, Yoshifusa Aizawa, Kenichi Yamaguchi, Toshihiro Takahashi

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Abstract

The cardioprotective properties of angiotensin-converting enzyme (ACE) inhibitors, quinapril and enalapril were studied in a rat model of heart failure. Seventy-five rats were divided into five groups and administered quinapril or enalapril at 2 and 20 mg/kg/day (groups Q2, Q20, E2 and E20) or vehicle alone (group V, all groups n = 15). Although both ACE inhibitors improved survival rate and ventricular function in a dose-dependent manner, the left ventricular end-diastolic pressure and expression level of transforming growth factor-beta1 mRNA were the lowest in group Q20. These results suggest that quinapril may confer greater protection than enalapril against injury from the renin-angiotensin system in heart failure.

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What this paper is about

The cardioprotective properties of angiotensin-converting enzyme (ACE) inhibitors, quinapril and enalapril were studied in a rat model of heart failure. Seventy-five rats were divided into five groups and administered quinapril or enalapril at 2 and 20 mg/kg/day (groups Q2, Q20, E2 and E20) or vehicle alone (group V, all groups n = 15). Although both ACE inhibitors improved survival rate and ventricular function in a dose-dependent manner, the left ventricular end-diastolic pressure and expression level of transforming growth factor-beta1 mRNA were the lowest in group Q20. These results suggest that quinapril may confer greater protection than enalapril against injury from the renin-angiotensin system in heart failure.

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Available abstract

The cardioprotective properties of angiotensin-converting enzyme (ACE) inhibitors, quinapril and enalapril were studied in a rat model of heart failure. Seventy-five rats were divided into five groups and administered quinapril or enalapril at 2 and 20 mg/kg/day (groups Q2, Q20, E2 and E20) or vehicle alone (group V, all groups n = 15). Although both ACE inhibitors improved survival rate and ventricular function in a dose-dependent manner, the left ventricular end-diastolic pressure and expression level of transforming growth factor-beta1 mRNA were the lowest in group Q20. These results suggest that quinapril may confer greater protection than enalapril against injury from the renin-angiotensin system in heart failure.

Key concepts: Quinapril, Enalapril, Heart failure, Internal medicine, Medicine, Angiotensin-converting enzyme, Renin–angiotensin system, Cardiology

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