Effects of perindopril on vascular wall and left ventricular hypertrophy in rats with experimental hypertension |
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Authors: | Tang Jiarong Zhou Qiang Wu Cuihuan Liang Qiansheng |
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Institution: | (1) Department of Cardiology, Tongji Hospital, Tongji Medical University, 430030 Wuhan;(2) Department of Pathology, Tongji Medical University, 430030 Wuhan |
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Abstract: | Summary The model of hypertensive rat was established by using the method of abdominal aortic constriction. 33 male SD rats were randomly
divided into 4 groups: group A (sham-operated rats serving as controls), group B (hypertensive rats serving as controls),
group C (hypertensive rats subjected to low-dose perindopril treatment, 0. 1 mg· kgt-1d) and group D (hypertensive rats receiving high-dose perindopril treatment, 1. 5 mg· kgt-1d). The drug was administered by gavage for 4 weeks. At the end of the treatment, mean arterious pressure (MAP) was measured
via catheter in the carotid artery. The heart was taken and weighed to calculate the ratio of left ventricular weight to body
weight (LVW/ BW). The ratio of medial mean thickness to mean diameter of lumen of aorta and superior mesenteric artery was
calculated by morphometry. Concentration of angiotensin II (A II) in plasma and in aortic wall were determined by radioimmunoassay
(PA II, AA II. Our results showed that both high-dose and low-dose perindopril may prevent hypertrophy of left ventricle and
hypertrophy of the tunica media of superior mesenteric artery. In addition, high-dose perindopril may significantly inhibit
hypertrophy of aortic media. The above effects of perindopril may be explained by inhibition on tissue renin-angiotensin system
of both vascular wall and heart, but is not related to circulating A II (PA II). |
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Keywords: | hypertension vascular wall hypertrophy angiotensin II perindopril |
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