Related Experiment Video
Updated: Jan 5, 2026
10:08
Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
Published on: February 17, 2018
13.9K
A Translational Model of Chronic Heart Failure
S A Kryzhanovskii1, I B Tsorin2, V N Stolyaruk2
1V. V. Zakusov Research Institute of Pharmacology, Moscow, Russia. sak_538@yandex.ru.
Bulletin of Experimental Biology and Medicine
|October 21, 2019
Summary
Researchers developed a rat model for chronic heart failure (CHF) by inducing myocardial infarction. This model replicates key CHF symptoms, including impaired heart function and congestion, aiding further research into the disease.
Area of Science:
- Cardiovascular Research
- Animal Models of Disease
- Heart Failure Pathophysiology
Background:
- Chronic heart failure (CHF) poses a significant global health burden.
- Developing reliable animal models is crucial for understanding CHF mechanisms and testing therapies.
- Existing models may not fully recapitulate the complex clinical presentation of human CHF.
Purpose of the Study:
- To establish a translational rat model of chronic heart failure.
- To validate the model's ability to mimic key clinical and diagnostic features of human CHF.
- To provide a robust platform for preclinical research in heart failure.
Main Methods:
- Induction of experimental anterior transmural myocardial infarction in rats.
- Development and characterization of the model over a 3-month period.
- Assessment of cardiac function, ventricular dimensions, venous congestion, plasma biomarkers, and receptor expression.
Main Results:
- A reproducible rat model of chronic heart failure was successfully created within 3 months.
- The model exhibited impaired ventricular contractility and dilatation, characteristic of heart failure.
- Signs of venous congestion, elevated plasma biochemical markers, and altered AT1aR and β-adrenoceptor expression were observed.
Conclusions:
- The developed rat model effectively simulates critical clinicodiagnostic criteria of chronic heart failure.
- This model serves as a valuable tool for investigating the pathophysiology of heart failure.
- It offers a promising preclinical platform for evaluating novel therapeutic strategies for heart failure.
Related Concept Videos
01:17Pathophysiology of Heart Failure
2.6K
Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
2.6K
01:29Heart Failure II: Pathophysiology
651
Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
651
01:27Heart Failure I: Introduction
645
Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
645
01:30Heart Failure IV: Classification and Diagnostic Evaluation
277
Heart failure can be classified in various ways, with the most common classifications based on physical activity limitations, disease progression, severity, and treatment strategies.The Functional Classification of Heart Failure divides patients into four categories based on physical activity limitation due to symptom burden.Class I: Patients in this class have cardiac disease but no physical activity limitations. Ordinary activities like walking, climbing stairs, or routine tasks do not cause...
277
01:30Heart Failure V: Medical Management
188
Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
188
01:26Heart Failure III: Clinical Manifestations
419
Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
419