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[Molecular mechanisms and consequences of cardiac viral infections]

R Kandolf1, B Bültmann, K Klingel

  • 1Abteilung Molekulare Pathologie, Universitätsklinikum Tübingen, Liebermeisterstrasse 8, 72076 Tübingen. reinhard.kandolf@med.uni-tuebingen.de

Der Pathologe
|September 30, 2008
PubMed

Insights

Parvovirus B19 (B19) causes inflammatory cardiomyopathy by infecting endothelial cells, disrupting calcium regulation and triggering cell death pathways. This leads to persistent infection and myocardial damage.

Area of Science:

  • Cardiology
  • Virology
  • Molecular Biology

Context:

  • Inflammatory cardiomyopathy is linked to viral infections.
  • Enteroviruses, adenoviruses, herpes viruses, and parvovirus B19 are identified cardiotropic agents.
  • Parvovirus B19 (B19) is increasingly recognized as a significant cardiotropic pathogen.

Purpose:

  • To elucidate the pathogenetic mechanisms of parvovirus B19 (B19) in inflammatory cardiomyopathy.
  • To differentiate B19-induced mechanisms from other viral cardiotropic agents.
  • To explore B19's role in endothelial cell infection and subsequent myocardial damage.

Summary:

  • Molecular methods confirm enteroviruses (especially coxsackieviruses B) in inflammatory cardiomyopathy.
  • Unlike other viruses targeting myocytes, B19 infects intracardiac endothelial cells.
  • B19 disrupts calcium regulation via viral phospholipase and induces apoptosis through caspase activation and STAT signaling dysregulation.
  • These mechanisms facilitate persistent B19 infection in endothelial cells, contributing to viral pathogenesis.

Impact:

  • Provides insight into B19-associated inflammatory cardiomyopathy pathogenesis.
  • Highlights the distinct mechanism of B19 infection targeting endothelial cells.
  • Suggests potential therapeutic targets related to calcium regulation and apoptotic pathways.

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