Different inhibition of enalaprilat and imidaprilat on bradykinin metabolizing enzymes |
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Authors: | Sakamoto K Sugimoto K Fujimura A |
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Affiliation: | Department of Clinical Pharmacology, Jichi Medical School, Kawachi-gun, Tochigi, Japan. |
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Abstract: | Effects of angiotensin-converting enzyme (ACE) inhibitors, enalaprilat and imidaprilat, on bradykinin (BK) metabolizing enzymes, aminopeptidase P (APP), neutral endopeptidase (NEP) and carboxypeptidase N (CPN), were examined. APP activity in the mouse lung was inhibited by enalaprilat in a concentration-dependent manner while imidaprilat did not influence the enzyme activity. The inhibitory effects of these ACE inhibitors on the NEP activity in the mouse lung and the CPN activity in the mouse serum were negligible. These data suggested that the influence of enalaprilat on the APP activity and subsequent BK metabolism are different from those of imidaprilat. |
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