Hepatitis C virus and cardiomyopathy

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A Matsumori1

  • 1Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine, Japan. amat@kuhp.kyoto-u.ac.jp

Herz
|July 25, 2000
PubMed

Insights

Hepatitis C virus (HCV) infection is linked to heart conditions like hypertrophic and dilated cardiomyopathy. Detecting HCV RNA in preserved heart tissues and observing treatment responses suggests HCV is a significant cause of unexplained heart disease.

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Virology

Background:

  • Hepatitis C virus (HCV) infection is increasingly recognized in patients with hypertrophic cardiomyopathy (HCM) and dilated cardiomyopathy (DCM).
  • Prevalence of HCV antibodies is significantly higher in cardiomyopathy patients compared to blood donors.
  • Cardiac abnormalities, particularly arrhythmias, are common in HCV-infected individuals.

Purpose of the Study:

  • To investigate the association between Hepatitis C virus infection and idiopathic cardiomyopathies.
  • To detect Hepatitis C virus RNA in autopsied heart tissues from patients with various cardiac conditions.
  • To evaluate the efficacy of interferon therapy in treating myocardial injury caused by Hepatitis C virus.

Main Methods:

  • HCV antibody screening in cardiomyopathy patients and blood donors.
  • Detection of HCV RNA using RT-PCR on paraffin-embedded autopsied heart sections.
  • Assessment of myocardial injury using TL-201-SPECT and evaluation of interferon treatment response.

Main Results:

  • HCV antibody prevalence was significantly higher in HCM (10.6%) and DCM (6.3%) patients than in blood donors (5.4%).
  • HCV RNA was detected in 21.3% of examined hearts, including those with HCM, DCM, and myocarditis.
  • Interferon therapy improved myocardial injury (SPECT scores) in 53% of patients, and HCV RNA cleared from circulation in most responders.

Conclusions:

  • Hepatitis C virus infection is an important cause of unexplained heart diseases, including cardiomyopathies.
  • HCV RNA can be detected in long-term preserved cardiac tissues, confirming viral presence in the heart.
  • Interferon therapy shows promise in treating HCV-associated myocardial injury.

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