Clinical course and risk factors of hepatitis C virus related liver disease in the general population: report from the Dionysos study
Summary
This summary is machine-generated.Hepatitis C virus (HCV) infection is common, with genotype 1b posing a higher risk for severe liver disease like cirrhosis and cancer. Alcohol consumption significantly worsens the disease progression in infected individuals.
Area Of Science
- Hepatology
- Virology
- Epidemiology
Background
- The clinical spectrum and risk factors for chronic liver disease due to Hepatitis C virus (HCV) remain incompletely understood.
- Defining the natural history and risk stratification for HCV infection is crucial for public health management.
Purpose Of The Study
- To determine the prevalence and risk factors of HCV infection in the general population.
- To assess the severity of HCV-related liver disease, including cirrhosis and hepatocellular carcinoma.
- To investigate the association between specific HCV genotypes and disease severity.
Main Methods
- Utilized polymerase chain reaction (PCR) for HCV RNA detection and genotyping in 6917 subjects from the Dionysos study.
- Diagnosed cirrhosis and hepatocellular carcinoma via liver biopsy.
- Conducted univariate and multivariate statistical analyses.
- Followed anti-HCV positive subjects for three years with regular liver function tests and ultrasonograms.
Main Results
- The overall prevalence of HCV RNA positivity was 2.3%, increasing with age and higher in women.
- HCV genotypes 1b and 2a were most prevalent (42% and 24%).
- Intravenous drug use, pre-1990 blood transfusions, and animal bites were significant risk factors for HCV infection.
- HCV genotype 1b infection was independently associated with an increased risk of cirrhosis and/or hepatocellular carcinoma.
- During follow-up, 35% of HCV RNA positive subjects had normal liver enzymes.
- Hepatocellular carcinoma developed in 2 of 22 cirrhotic patients with high alcohol intake (incidence rate 3.0% per year).
Conclusions
- HCV infection is prevalent in Northern Italy, but less than 50% of infected individuals develop severe liver disease.
- HCV genotype 1b is a significant risk factor for severe liver disease progression.
- Alcohol consumption exceeding 30g/day markedly worsens the natural course of HCV infection.
View abstract on PubMed