Effects of Angiotensin-converting Enzyme Inhibition and Bradykinin Peptides in Rats with Myocardial Infarction

Overview

Journal Int J Clin Exp Pathol

Specialty Pathology

Date 2015 Jun 6

PMID 26045879

Citations 4

Authors

Zhe Qu

Hongxin Xu

Yihao Tian

Affiliations

Soon will be listed here.

Abstract

Background And Objective: Angiotensin-converting enzyme (ACE) inhibitors have been reported to decrease myocardial remodeling and faciliate cardiac function improvement in the setting myocardial infarction by affecting bradykinin. The purpose of this study was to evaluate the combination effects of perindopril and bradykinin (BK) in rats with myocardial infarction.

Methods: Wistar Rats underwent to left anterior descending (LAD) coronary artery ligation were allocated into MI group (n=6); Perindopril group (n=7); Perindopril+BK group (n=7). An additional sham operation group (Sham group, n=6) were also established. After 4 weeks, the left ventricle function, myocardial tissue morphology, myocardial collagen volume faction, infracted ventricular wall thickness, myocardial infarction area and neovascular formation were evaluated.

Results: Combination treatment with perindopril and BK were showed significant improvement on LVEDV, LVEF and LVFS than MI group. Moreover, a significant improvement on LVEF was found in Perindopril+BK group than Perindopril group but not on LVEDV and LVFS between these two groups. Furthermore, neo-vessel density was significantly increased in Perindopril+BK group than other groups while no significant improvement on vessel density was found after the treatment of perindopril. In addition, myocardial infarction thickness improvement was found in Perindopril and group than MI group while combination treatment with perindopril and BK can significant improve the myocardial infarction thickness than perindopril only.

Conclusions: Combination treatment with ACE inhibitor perindopril and BK can significantly improve the ventricle function in the rat model of myocardial infarction. Our data suggest BK can serve as adjuvant treatment in myocardial infarction treatment.

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