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Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

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 system...
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...
Hypersensitivity Reactions: Immune-Complex Reactions01:19

Hypersensitivity Reactions: Immune-Complex Reactions

Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum sickness, a systemic...
Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Cytomegalovirus Disease01:27

Cytomegalovirus Disease

Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...

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Related Experiment Video

Updated: Jul 6, 2026

Use of Viral Entry Assays and Molecular Docking Analysis for the Identification of Antiviral Candidates against Coxsackievirus A16
06:03

Use of Viral Entry Assays and Molecular Docking Analysis for the Identification of Antiviral Candidates against Coxsackievirus A16

Published on: July 15, 2019

Autoimmunity in coxsackievirus infection.

N R Rose1

  • 1Johns Hopkins Center for Autoimmune Disease Research, Johns Hopkins University, 615 N. Wolfe St., E5009, Baltimore, MD 21205, USA. nrrose@jhmi.edu

Current Topics in Microbiology and Immunology
|March 25, 2008
PubMed
Summary

Viral infections can trigger autoimmune diseases like myocarditis. Early cytokine production, including IL-1beta and TNFalpha, determines if a viral infection progresses to pathogenic autoimmunity in susceptible individuals.

Area of Science:

  • Immunology
  • Virology
  • Cardiology

Background:

  • Viral infections can induce autoantibodies, sometimes leading to autoimmune diseases.
  • Autoimmune myocarditis is a significant concern, particularly following viral infections.
  • Understanding the mechanisms of virus-induced autoimmunity is crucial for preventing autoimmune diseases.

Purpose of the Study:

  • To investigate the mechanisms underlying the induction of autoimmune disease following viral infection.
  • To delineate the critical early events that determine the progression from viral myocarditis to pathogenic autoimmunity.
  • To explore the role of specific cytokines in the development of autoimmune sequelae.

Main Methods:

  • Utilized a mouse model of autoimmune myocarditis induced by cardiotropic coxsackievirus B3 infection.

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Determining Immune System Suppression versus CNS Protection for Pharmacological Interventions in Autoimmune Demyelination
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Determining Immune System Suppression versus CNS Protection for Pharmacological Interventions in Autoimmune Demyelination

Published on: September 12, 2016

Related Experiment Videos

Last Updated: Jul 6, 2026

Use of Viral Entry Assays and Molecular Docking Analysis for the Identification of Antiviral Candidates against Coxsackievirus A16
06:03

Use of Viral Entry Assays and Molecular Docking Analysis for the Identification of Antiviral Candidates against Coxsackievirus A16

Published on: July 15, 2019

Determining Immune System Suppression versus CNS Protection for Pharmacological Interventions in Autoimmune Demyelination
09:38

Determining Immune System Suppression versus CNS Protection for Pharmacological Interventions in Autoimmune Demyelination

Published on: September 12, 2016

  • Simulated autoimmune sequelae by immunizing susceptible mice with murine cardiac myosin.
  • Analyzed the early cytokine production (IL-1beta, TNFalpha) within hours of infection induction.
  • Main Results:

    • Viral infections can trigger pathogenic autoimmunity, leading to autoimmune disease.
    • The progression from viral myocarditis to autoimmune response is determined within hours post-infection.
    • Key cytokines, including IL-1beta and TNFalpha, play a critical role in this determination.

    Conclusions:

    • The study provides insights into the mechanisms of virus-induced autoimmune myocarditis.
    • Early cytokine responses are critical determinants of autoimmune disease development after viral infection.
    • Findings are applicable to understanding human myocarditis and dilated cardiomyopathy.