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Perimyocarditis following streptococcal group A infection: from clinical cases to bioinformatics analysis

Stephen D H Malnick1, Ayellet Bar-Ilan, Sorel Goland

  • 1Department of Internal Medicine C, Kaplan Medical Center, Rehovot, Israel (affiliated to the Hebrew University-Hadassah, Jerusalem, Israel). stephen@malnick.net

European Journal of Internal Medicine
|July 7, 2010
PubMed
Abstract

Insights

Streptococcal infection can cause myocarditis, a heart inflammation. Bioinformatic analysis revealed a shared epitope between Streptococcus bacteria and a cardiac protein, suggesting a potential cause for this condition.

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Bioinformatics

Background:

  • Streptococcal infections are linked to rheumatic fever and less commonly, perimyocarditis.
  • Myocarditis, or heart inflammation, is a serious complication of bacterial infections.

Observation:

  • Four young males developed myocarditis following acute streptococcal infection.
  • Bioinformatic techniques were used to compare Streptococcus group A proteins with human muscle proteins.

Findings:

  • A specific cardiac protein, ATP2A2 (a Ca2+ ATPase), shares an epitope with Streptococcus group A.
  • This shared epitope has a high probability of being presented by MHC Class II molecules, potentially triggering an autoimmune response.

Implications:

  • Streptococcal myocarditis may be more prevalent than previously recognized.
  • The identified shared epitope provides a molecular basis for understanding the pathogenesis of streptococcal-induced myocarditis.
  • This finding could lead to improved diagnostic or therapeutic strategies for streptococcal myocarditis.

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