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Related Concept Videos

Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

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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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Myocarditis I: Introduction01:21

Myocarditis I: Introduction

471
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...
471
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

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Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
634
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

628
Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
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Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

550
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
550
Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

366
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...
366

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Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix
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Inflammatory Cardiomyopathic Syndromes.

Barry H Trachtenberg1, Joshua M Hare2

  • 1From the Houston Methodist DeBakey Heart and Vascular Center (B.H.T.), TX; University of Miami Leonard Miller School of Medicine, FL (J.M.H.); and Interdisciplinary Stem Cell Institute, Miami, FL (J.M.H.).

Circulation Research
|September 16, 2017
PubMed
Summary
This summary is machine-generated.

Inflammatory cardiomyopathies, often caused by viral infections or Chagas disease, lead to heart dysfunction. New diagnostic tools and targeted therapies show promise for improving patient outcomes in myocarditis.

Keywords:
cytokinesgene expressionheart failuremyocarditissarcoidosis

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Area of Science:

  • Cardiology
  • Immunology
  • Pathology

Background:

  • Inflammatory cardiomyopathies involve heart inflammation (myocarditis) causing myocardial dysfunction, ranging from recoverable to chronic dilated cardiomyopathy.
  • Viral pathogenesis is the most common cause in developed nations, while Chagas disease is prevalent in Latin America.
  • Current diagnostic methods like endomyocardial biopsies have limitations in sensitivity, especially for patchy myocarditis.

Purpose of the Study:

  • To review the current understanding of inflammatory cardiomyopathies.
  • To highlight the limitations of existing diagnostic criteria.
  • To discuss emerging diagnostic and therapeutic strategies.

Main Methods:

  • Review of current literature on inflammatory cardiomyopathies.
  • Discussion of diagnostic challenges and advancements.
  • Analysis of therapeutic approaches including immunosuppression and immunomodulation.

Main Results:

  • The true incidence of myocarditis is underestimated due to diagnostic limitations.
  • New immunohistochemistry and molecular techniques are improving diagnostic accuracy.
  • Immunosuppression is beneficial for specific conditions like cardiac sarcoidosis and giant cell myocarditis.

Conclusions:

  • Advancements in molecular diagnostics are crucial for understanding pathophysiology and enabling precision medicine.
  • Further clinical trials for immunosuppressive, antiviral, and immunomodulating therapies are necessary.
  • Improved diagnostics and tailored therapies are expected to enhance patient outcomes for inflammatory cardiomyopathies.