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Related Concept Videos

Myocarditis I: Introduction01:21

Myocarditis I: Introduction

493
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...
493
Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

385
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...
385
Myocarditis III: Medical Management01:14

Myocarditis III: Medical Management

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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...
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Autoimmune Disorders01:29

Autoimmune Disorders

2.0K
Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune...
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Myocarditis IV: Nursing Management01:22

Myocarditis IV: Nursing Management

297
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...
297
Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

700
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...
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Flow Cytometry-Based Quantification and Analysis of Myocardial B-Cells
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Cardiac Autoimmunity: Myocarditis.

William Bracamonte-Baran1, Daniela Čiháková2,3

  • 1Department of Pathology, Division of Immunology, Johns Hopkins University School of Medicine, 720 Rutland Ave., Baltimore, MD, 21205, USA.

Advances in Experimental Medicine and Biology
|July 2, 2017
PubMed
Summary
This summary is machine-generated.

Myocarditis, heart muscle inflammation, can lead to dilated cardiomyopathy and heart failure. Understanding its complex autoimmune triggers and immune responses is crucial for better diagnosis and treatment.

Keywords:
Adaptive responseAutoimmunityDilated cardiomyopathyMyocarditis

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Area of Science:

  • Cardiology
  • Immunology
  • Pathology

Background:

  • Myocarditis is heart muscle inflammation that can progress to dilated cardiomyopathy and heart failure.
  • Autoimmune processes, triggered by factors like infections and genetic predisposition, are key causes of myocarditis.
  • The complex immune response involves innate and adaptive immunity, with specific T cell subsets driving chronic damage.

Purpose of the Study:

  • To elucidate the immunopathogenic mechanisms underlying myocarditis.
  • To explore the role of various immune cells and factors in disease progression.
  • To highlight challenges in diagnosis and treatment due to disease complexity.

Main Methods:

  • Review of basic science and clinical findings on myocarditis immunopathogenesis.
  • Analysis of immune system components including innate (monocytes, neutrophils, eosinophils) and adaptive (T cells, B cells) responses.
  • Examination of the role of stromal cells and specific cytokines.

Main Results:

  • Autoimmune myocarditis involves a sustained attack on myocardial tissues orchestrated by diverse immune responses.
  • Th17 cells are critical drivers of dilated cardiomyopathy development, not just acute myocarditis.
  • Humoral responses contribute to late-stage hemodynamic complications.

Conclusions:

  • Myocarditis pathogenesis is intricate, involving complex interactions between genetic, environmental, and immune factors.
  • Current diagnostic and therapeutic strategies for myocarditis remain suboptimal due to its variable presentation and complexity.
  • Further research into immunopathogenic mechanisms is essential for improving patient outcomes.