Carvedilol, A Novel Cardiovascular Agent, Inhibits Development of Vascular and Ventricular Hypertrophy in Spontaneously Hypertensive Rats

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Abstract
The effects of carvedilol, a novel cardiovascular agent, were evaluated in developing spontaneously hypertensive rats (SHR) for effects on hemodynamics, and the ability to effect the development of left ventricular, and vascular hypertrophy associated with chronic hypertension. Chronic oral administration of low dose carvedilol (20 mg/kg/day) was initiated when rats were 5 weeks of age, and experiments progressed until 14 weeks of age. Carvedilol-treated SHR had significantly reduced systolic blood pressures and heart rates throughout the duration of the experiment, and had significantly reduced ventricle/body weights by approximately 9.0%. Morphologic analysis of tertiary branches of the mesenteric artery revealed that carvedilol-treated