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Related Concept Videos

Myocarditis I: Introduction01:21

Myocarditis I: Introduction

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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...
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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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Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
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Acute Inflammation I: Inflammatory Response01:26

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Acute inflammation is a rapid, short-lived physiological response to tissue injury or infection, designed to eliminate harmful agents and initiate repair. This tightly regulated process typically lasts from minutes to several days and is triggered by factors such as microbial invasion, physical trauma, or chemical injury.Recognition and Mediator ReleaseThe inflammatory response begins when resident immune cells—such as mast cells, macrophages, and dendritic cells—detect...
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Related Experiment Video

Updated: Apr 30, 2026

Delayed Intramyocardial Delivery of Stem Cells after Ischemia Reperfusion Injury in a Murine Model
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In Defense of Homeostasis: Innate Immunity in Cardiac Injury and Repair.

Douglas L Mann1

  • 1Center for Cardiovascular Research, Cardiovascular Division, Washington University School of Medicine, St. Louis, Missouri, USA.

Immunological Reviews
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Summary
This summary is machine-generated.

The heart

Keywords:
comparative immunology/evolutioncytokine receptorscytokinesinflammationlipopolysaccharidemoleculesprocesses

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Area of Science:

  • Cardiovascular Biology
  • Immunology
  • Pathophysiology

Background:

  • The heart's ability to adapt to stress is crucial for maintaining function.
  • Sterile tissue injury triggers stress responses and inflammation for repair.
  • Disease tolerance describes programs coupling cytoprotection with controlled inflammation.

Purpose of the Study:

  • To review evidence on sterile cardiac injury and disease tolerance.
  • To explore how cardiac myocytes adapt to stress.
  • To understand the role of inflammation in cardiac decompensation.

Main Methods:

  • Review of emerging evidence on sterile cardiac injury.
  • Analysis of molecular programs in cardiac myocytes.
  • Examination of inflammatory signaling in cardiac stress responses.

Main Results:

  • Sterile cardiac injury induces a stress-tolerant state in cardiac myocytes.
  • This state involves cytoprotective programs and limits immune-mediated injury.
  • Sustained or excessive inflammation can cause collateral damage and cardiac decompensation.

Conclusions:

  • Cardiac disease tolerance involves stress-activated pathways that protect myocytes.
  • The inflammatory response's magnitude and duration critically influence outcomes.
  • Understanding these mechanisms is key to preventing heart failure after injury.