Research communications in molecular pathology and pharmacology · 1996
Beneficial effect of amiloride, A Na(+)-H+ exchange blocker, in a murine model of dilated cardiomyopathy.
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Taniguchi Y, Nakano M, Hasegawa S, Kanda T, Imai S, Suzuki T, Kobayashi I, Nagai R
Аннотация
We investigated the effect of amiloride, a Na(+)-H+ exchange blocker, on ventricular hypertrophy in a murine model of dilated cardiomyopathy (DCM). Mice with DCM were given orally amiloride for 60 days. The ratio of heart weight to body weight and left ventricular cavity dimension were significantly smaller in both amiloride groups than those in furosemide and control (untreated DCM) groups (p < 0.05). The fiber diameter was significantly smaller in amiloride groups than that in furosemide group (p < 0.01). Plasma and cardiac angiotensin II (AII) levels were decreased in amiloride-treated groups compared with those in furosemide or control group (p < 0.05). Our findings suggest that amiloride prevents the development of myocardial hypertrophy and left ventricular dilatation in DCM in association with a reduction of AII.