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[Effects of m-nifedipine on left ventricular diastolic function and Ca2+ content of myocardial and cerebral mitochondria and artery tissues in left ventricular hypertrophied rats].

Left ventricular hypertrophy (LVH) was induced by renal hypertension in rats. m-Nifedipine (m-Nif, ig 20 mg.kg-1.d-1 for 9 wk) decreased LV weight in the renovascular hypertensive rats (P < 0.01). The LV compliance in LVH group was significantly decreased compared with that in sham- operated group. The LV stiffness constant, Ca2+ content in left ventricular myocardial and cerebral mitochondria, aorta, and tail artery were markedly raised. m-Nif could markedly reduce the LV stiffness constant, improve the LV compliance, and decrease the Ca2+ content of left ventricular myocardial mitochondria and tissues of artery from LVH rats. These effects of m-Nif were similar to those of nifedipine at the same dosage.