Surgically Induced Cardiac Volume Overload by Aortic Regurgitation in Mouse

作者： Jian Wu*1, Shijun Wang*1, Le Kang*1, Chunjie Yang*1, Jianguo Jia1, Xingxu Wang2, Ge Wei1, Xuan Li1, Jieyun You2, Yunzeng Zou1 1Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences,Fudan University, 2Department of Cardiovascular Medicine, Shanghai East Hospital, School of Medicine,Tongji University

简介：

Overview

This protocol outlines a surgical method for creating aortic regurgitation in mice, which serves as a reliable model for studying volume overload-induced cardiac hypertrophy. Through echocardiographic assessments and invasive hemodynamic measurements, the study reveals significant changes in heart structure and function, offering insights into the mechanisms of volume overload cardiomyopathy.

Key Study Components

Research Area

• Cardiac hypertrophy
• Aortic regurgitation models
• Surgical techniques in animal studies

Background

• Importance of understanding volume overload in cardiac health
• Current limitations of existing methodologies
• Need for reliable experimental models

Methods Used

• Surgical creation of aortic regurgitation in mice
• Echocardiography for functional assessment
• Invasive hemodynamic measurements

Main Results

• Successful creation of aortic regurgitation leading to volume overload
• Identified cardiac structure changes such as left ventricular dilation
• Demonstrated reduced left ventricular ejection fraction and altered hemodynamic parameters

Conclusions

• This study establishes a robust model for exploring the pathological features of volume overload cardiomyopathy.
• Findings contribute to the understanding of hypertrophy mechanisms and potential therapeutic targets.

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