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Atherosclerosis as a possible extrahepatic manifestation of chronic hepatitis C virus infection
Nobukazu Ishizaka1, Yuko Ishizaka1, Minoru Yamkado1
1Department of Cardiology, Osaka Medical College, Osaka, Japan.
Insights
Chronic hepatitis C virus (HCV) infection may increase atherosclerosis risk, but research is mixed. Physicians should consider cardiovascular disease in HCV patients due to potential serious consequences.
Area of Science:
- Cardiovascular Medicine
- Infectious Diseases
- Pathology
Background:
- Chronic infection and inflammation are linked to atherosclerosis.
- Hepatitis C virus (HCV) infection is suspected to increase atherosclerotic vascular changes.
- Mechanisms linking HCV to atherogenesis are not fully understood, and study results vary.
Purpose of the Study:
- To explore the association between chronic hepatitis C virus infection and atherosclerotic vascular changes.
- To highlight the potential comorbidity of cardiovascular disorders in patients with chronic HCV infection.
Main Methods:
- Review of existing literature on HCV infection and atherosclerosis.
- Analysis of studies examining cardiovascular outcomes in HCV-infected individuals.
- Consideration of factors influencing observed associations, such as sample size and study design.
Main Results:
- Some studies suggest a higher prevalence of atherosclerotic changes in coronary, cerebrovascular, and carotid arteries in HCV patients.
- Other studies report no association or even an inverse association between HCV infection and atherosclerosis.
- Discrepancies in findings may stem from variations in study populations, sample sizes, and methodologies.
Conclusions:
- Physicians must remain aware of cardiovascular disorders as a significant potential comorbidity in patients with chronic HCV infection.
- The precise mechanisms underlying the relationship between HCV and atherogenesis require further investigation.
- Despite conflicting data, the potential clinical consequences warrant clinical vigilance.
Abstract:
Chronic infection and associated inflammation may play a role in various unfavorable pathologic conditions, including atherosclerosis. Chronic hepatitis C virus (HCV) infection is thought to be associated with a higher prevalence of atherosclerotic vascular changes in the coronary artery, cerebrovascular artery, and carotid artery; however, little is known about the precise mechanisms by which HCV enhances atherogenic processes. Furthermore, some studies have found no association, or even an inverse association, between HCV infection and atherosclerotic vascular changes or cardiovascular events. Differences in data regarding the mode of association may be because of variations in sample size, target population, and study design. Nevertheless, physicians should be aware of cardiovascular disorders as a possible comorbidity - owing to their considerable consequences - among patients with chronic HCV infection.
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