Abstract
This study aimed at examining the cardioprotective effects of resveratrol in rats with simultaneous type 2 diabetes and renal hypertension. Eight groups (8-10 each) of male Sprague-Dawley rats, including a control, a diabetic, a renal hypertensive, a sham, a simultaneously hypertensive-diabetic receiving vehicle, and 3 simultaneously hypertensive-diabetic receiving resveratrol at 5, 10 or 20 mg/kg/day were used. After 4 weeks of treatment, blood pressure and glucose, and serum markers of oxidative stress were measured, and animals' hearts were used for isolated studies. Resveratrol prevented the increase of systolic blood pressure, serum malondialdehyde, fasting blood glucose, infarct size, coronary resistance, and coronary effluent creatine kinase-MB. Moreover, it prevented the decrease of serum superoxide dismutase and glutathione reductase, heart rate, left ventricular developed pressure, rate of increase of ventricular pressure, and rate of decrease of ventricular pressure. In conclusion, our findings show that resveratrol alleviates cardiac dysfunction in diabetic-hypertensive rats by virtue of antioxidant, antihypertensive, and coronary vasodilating activities.
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