Comparative study of effects of angiotensin II receptor antagonist, KD3-671, and angiotensin converting enzyme inhibitor, enalaprilat, on cough reflex in guinea pig

European Journal of Drug Metabolism and Pharmacokinetics
H MiyamotoY Sawada


Angiotensin converting enzyme (ACE) inhibitor prevents the inactivation of bradykinin by inhibiting ACE activity, leading to side effects such as dry cough and angioedema. KD3-671 is a novel nonpeptide angiotensin II antagonist which is expected to exhibit persistent hypotensive action without these side effects. In this study, we investigated the relationship between the pharmacokinetics and cough-inducing effect of this drug in guinea-pig, compared with that of an ACE inhibitor, enalaprilat. KD3-671 was not significantly different from the vehicle treatment in the ability to induce coughing, whereas enalaprilat significantly enhanced coughing compared with the vehicle treatment. Thus, as expected from its mechanism of pharmacological action, KD3-671 did not induce coughing. We suggest that the citric acid-induced guinea pig coughing model will be useful in preclinical studies to examine the effect of drug on pulmonary function.


Jul 1, 1971·Biochemical Pharmacology·D W Cushman, H S Cheung
Nov 1, 1981·Journal of Pharmacobio-dynamics·K YamaokaT Uno
Jan 1, 1995·Journal of Cardiovascular Pharmacology·S MochizukiA Tomiyama
Oct 30, 1998·The Annals of Pharmacotherapy·G B Pylypchuk

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Jun 17, 2003·Biological & Pharmaceutical Bulletin·Tadashi NagamatsuYoshio Suzuki

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