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[Relationship between HBcAg in the liver and mechanisms of chronic type B hepatitis HBVM in serum]
Insights
Hepatitis B virus (HBV) replication markers like HBcAg in the liver and HBV-DNA in serum were detected in patients with chronic hepatitis B. These markers showed an inverse correlation with liver disease severity, suggesting an immune response drives liver damage.
Area of Science:
- Hepatology
- Virology
- Immunology
Context:
- Investigates Hepatitis B virus (HBV) infection, a significant global health concern.
- Examines liver biopsies and serum samples from 59 hospitalized hepatitis B patients.
- Includes cases of chronic active hepatitis (CAH), chronic persistent hepatitis (CPH), and subacute fulminant hepatitis.
Purpose:
- To determine the presence and distribution of Hepatitis B core antigen (HBcAg) in the liver.
- To assess the correlation between HBV replication markers (HBcAg, HBV-DNA) and liver disease activity.
- To explore the role of immune response in HBV-induced liver damage.
Summary:
- HBcAg was detected in 53% of liver samples, with higher prevalence in milder CAH and non-cirrhotic cases.
- No positive correlation was found between HBV replication activity and liver disease activity; an inverse correlation was observed.
- HBV-DNA in serum positively correlated with HBcAg in the liver, indicating serum HBV-DNA reflects viral replication.
- Findings suggest that immune-mediated destruction of infected hepatocytes, rather than direct viral cytopathic effect, contributes to liver injury.
Impact:
- Challenges the direct cytopathic effect hypothesis of HBV.
- Supports the role of T-lymphocyte-mediated immune response in clearing HBV-infected cells.
- Provides insights into the immunopathogenesis of Hepatitis B.
- Highlights the potential of HBcAg as a target for immune-based therapies.
Abstract:
We detected the presence and distribution of HBcAg in the liver by immunohistochemistry (ABC method) and the presence of HBV-DNA in serum (spot hybridization) and anti-HBe in serum (ELISA) from 59 cases of hepatitis B hospitalized in our hospital, including 47 cases of CAH, 5 cases of CPH, and 7 cases of subacute fulminant hepatitis. 1. HBcAg in the liver was detected in 25 out of 47 cases (53%) of CAH, in 2 out of 5 cases of CPH and in 4 out of 7 cases of subacute fulminant hepatitis. The total percentage was 53% (31/59). 2. There was no positive correlation between HBV replication activity and liver disease activity (P greater than 0.05). Our results did not support the hypothesis that suggests a direct cytopathic effect of HBV. Oppositely, the fact was that the presence, the amount and the patterns of HBcAg in the liver, and the presence of HBV-DNA in serum were predominant in mild CAH compared with those in severe CAH, predominant in CAH without cirrhosis compared with those in CAH with cirrhosis. There was a tendency of inverse correlation between HBV replication activity and liver disease activity. The results above were in line with the concept that HBcAg expressed on the surface of infected hepatocytes may be relevant target for T lymphocyte cytotoxicity. The results have suggested that an immune response to HBV is present, leading to the destruction of most infected cells. 3. There was a positive correlation between HBV-DNA in serum and HBcAg in the liver (P less than 0.005), indicating that HBV-DNA in serum can represent HBV replication.(ABSTRACT TRUNCATED AT 250 WORDS)