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Myocarditis I: Introduction01:21

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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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In Vitro Assessment of Cardiac Function Using Skinned Cardiomyocytes
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Proteotoxicity and cardiac dysfunction.

Patrick M McLendon1, Jeffrey Robbins2

  • 1From the Department of Pediatrics, Children's Hospital Research Foundation, Cincinnati, OH.

Circulation Research
|May 23, 2015
PubMed
Summary
This summary is machine-generated.

Cardiomyocyte proteins must maintain proper folding to ensure heart function. This review details cellular defenses against protein misfolding and explores therapeutic strategies to combat proteotoxicity in the heart.

Keywords:
autophagyproteasomeprotein

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Area of Science:

  • Cardiology
  • Molecular Biology
  • Cellular Biology

Background:

  • Mammalian heart function relies on optimal cardiomyocyte protein conformation.
  • Proteins face constant threats from intrinsic and environmental factors, necessitating robust quality control.

Purpose of the Study:

  • To review cellular mechanisms for maintaining protein folding and conformation in cardiomyocytes.
  • To explore the causes and consequences of protein misfolding and proteotoxicity in the heart.
  • To discuss therapeutic strategies targeting proteotoxicity.

Main Methods:

  • This is a review article, synthesizing existing research on protein quality control and proteotoxicity.
  • Mechanisms of protein folding, misfolding, and cellular defense systems are discussed.
  • The role of proteotoxicity in cardiac pathology and potential therapeutic interventions are explored.

Main Results:

  • Cells employ multiple quality control systems to ensure proper protein folding and conformation.
  • Misfolded proteins can lead to aggregation, soluble toxic species, and compromised protein homeostasis.
  • Proteotoxicity contributes to cardiac dysfunction and presents therapeutic targets.

Conclusions:

  • Maintaining protein homeostasis is critical for cardiomyocyte function and overall heart health.
  • Dysfunctional protein quality control and resultant proteotoxicity are key contributors to cardiac disease.
  • Interfering with proteotoxicity offers a promising avenue for novel cardiac therapies.