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Protein Misfolding Cyclic Amplification of Prions
10:12

Protein Misfolding Cyclic Amplification of Prions

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Prion-associated dilated cardiomyopathy

Mahi Lakshmi Ashwath1, Stephen J Dearmond, Talley Culclasure

  • 1Mercer University School of Medicine, Macon, GA, USA.

Archives of Internal Medicine
|February 16, 2005
PubMed

Insights

Creutzfeldt-Jakob disease, a rare brain disorder, was diagnosed in a patient with heart muscle disease. Abnormal prion protein was found in both the brain and heart, suggesting a potential link between the two conditions.

Area of Science:

  • Neurology
  • Cardiology
  • Prion Science

Background:

  • Creutzfeldt-Jakob disease (CJD) is a fatal neurodegenerative prion disease.
  • It affects approximately one in a million people annually.
  • CJD typically presents with rapidly progressive neurological decline.

Observation:

  • A 43-year-old patient presented with concurrent movement disorder, encephalopathy, cognitive decline, and dilated cardiomyopathy.
  • Brain biopsy confirmed spongiform encephalopathy consistent with CJD.
  • Standard workup for dilated cardiomyopathy yielded no identifiable cause.

Findings:

  • Endomyocardial biopsy revealed abnormal prion protein, potentially infectious scrapie prion.
  • The presence of prion in cardiac tissue was unexpected.
  • This finding suggests prion disease may extend beyond the central nervous system.

Implications:

  • This case suggests a potential new etiology for dilated cardiomyopathy: prion-induced cardiomyopathy.
  • Further research is needed to understand the mechanism and prevalence of prion involvement in cardiac conditions.
  • This expands the clinical spectrum of Creutzfeldt-Jakob disease and prion disorders.

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