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Journal of Renin-Angiotensin-Aldosterone System
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Pathological involvement of chymase-dependent angiotensin II formation in the development of cardiovascular disease

Hidenori Urata

Department of Internal Medicine , Fukuoka University, School of Medicine, Fukuoka, Japan, uratah{at}fukuoka-u.ac.jp

Chymase is a potent and specific angiotensin II (Ang II)-forming enzyme in vitro. There is also strong evidence to suggest its importance in vivo. Recent clinical studies have suggested that high serum cholesterol levels are associated with increased vascular chymase activity and this may assist in the development of atherosclerosis. This clinical finding has been reproduced in hamster models. Studies with transgenic mice overexpressing the human chymase gene suggest a direct association between vascular chymase upregulation and atherogenesis. There is also increased chymase activity following various cardiac diseases such as myocardial ischaemia, volume overload cardiac failure, cardiomyopathy and viral myocarditis, suggesting that increased cardiac chymase activity appears to be involved in cardiac remodelling.

Key Words: chymase • heart failure • animal model • atherosclerosis • angiotensin II • Ang II receptor blocker • cardiac remodelling

Journal of Renin-Angiotensin-Aldosterone System, Vol. 1, No. 2 suppl, S35-S37 (2000)
DOI: 10.3317/jraas.2000.054
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