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Related Concept Videos

Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
Rheumatic Heart Disease I: Introduction01:23

Rheumatic Heart Disease I: Introduction

Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
Myocarditis III: Medical Management01:14

Myocarditis III: Medical Management

Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...
Myocarditis IV: Nursing Management01:22

Myocarditis IV: Nursing Management

Myocarditis is an inflammatory condition of the myocardium requiring meticulous nursing management for optimal patient outcomes. Effective management begins with a thorough assessment of the patient's medical history, paying close attention to past infections, autoimmune disorders, travel history, and exposure to toxins or drugs. Recent viral infections and systemic diseases are particularly relevant due to their potential role in triggering myocarditis.Physical Examination and MonitoringThe...

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Related Experiment Video

Updated: May 12, 2026

Flow Cytometry-Based Quantification and Analysis of Myocardial B-Cells
12:46

Flow Cytometry-Based Quantification and Analysis of Myocardial B-Cells

Published on: August 17, 2022

Autoimmune myocarditis, valvulitis, and cardiomyopathy.

Jennifer M Myers1, DeLisa Fairweather, Sally A Huber

  • 1University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA.

Current Protocols in Immunology
|April 9, 2013
PubMed
Summary

This study details methods for inducing and evaluating experimental autoimmune myocarditis (EAM) and valvulitis in animal models. It provides protocols for assessing these inflammatory heart conditions and identifying associated autoantibodies for better understanding of human heart diseases.

Related Experiment Videos

Last Updated: May 12, 2026

Flow Cytometry-Based Quantification and Analysis of Myocardial B-Cells
12:46

Flow Cytometry-Based Quantification and Analysis of Myocardial B-Cells

Published on: August 17, 2022

Area of Science:

  • Cardiovascular Biology
  • Immunology
  • Animal Models of Disease

Background:

  • Myocarditis and valvulitis are inflammatory heart conditions impacting cardiac function and valve integrity.
  • Cardiac myosin is recognized as a key autoantigen in inflammatory heart diseases, with associated antibodies and T cells observed.
  • Animal models are crucial for studying human myocarditis and valvulitis, aiding in understanding disease mechanisms.

Purpose of the Study:

  • To provide a practical guide for inducing and evaluating experimental autoimmune myocarditis (EAM) in various mouse strains and Lewis rats.
  • To define protocols for cardiac myosin purification and EAM induction using cardiac myosin, its peptides, or coxsackievirus CVB3.
  • To outline methods for assessing myocarditis and valvulitis in both human and animal subjects, including the identification of functional autoantibodies.

Main Methods:

  • Induction of EAM in mice and rats using purified cardiac myosin, specific myocarditic peptides, or coxsackievirus CVB3.
  • Detailed protocols for cardiac myosin purification.
  • Assessment of myocarditis and valvulitis through histological and immunological evaluations.
  • Methods for detecting functional autoantibodies against cardiac myosin and adrenergic receptors.

Main Results:

  • Established protocols for reproducible induction of EAM and valvulitis in selected animal models.
  • Demonstrated the utility of cardiac myosin and its peptides in EAM induction.
  • Developed methods for assessing disease severity and identifying relevant autoantibodies.
  • Provided a framework for evaluating therapeutic interventions in preclinical models.

Conclusions:

  • The described protocols enable robust induction and evaluation of experimental autoimmune myocarditis and valvulitis.
  • These methods facilitate the study of autoimmune mechanisms in heart disease and the identification of pathogenic autoantibodies.
  • The developed animal models and assessment techniques are valuable tools for advancing research into inflammatory cardiomyopathies and valvular diseases.