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Published on: February 19, 2019
[Demonstration of intrahepatic HBsAg and HBcAg in chronic liver disease by double staining]
1Clinical Immune Research Unit, Tongji Hospital of Tongji Medical University, Wuhan.
Insights
Hepatitis B virus (HBV) proteins, HBsAg and HBcAg, often coexist within the same liver cells in chronic liver disease. Their coexpression correlates with active liver cell damage during HBV replication.
Area of Science:
- Hepatology
- Virology
- Immunohistochemistry
Context:
- Chronic liver disease pathogenesis
- Hepatitis B virus (HBV) infection mechanisms
- Intrahepatic viral antigen localization
Purpose:
- To investigate the expression and distribution of intrahepatic HBsAg and HBcAg in chronic liver disease.
- To determine the relationship between viral antigen co-localization and liver pathology.
- To classify hepatocytes based on HBsAg and HBcAg distribution patterns.
Summary:
- Double staining immunohistochemistry revealed homogenous cytoplasmic HBsAg and cytoplasmic-membranous HBcAg in chronic liver disease patients.
- HBsAg and HBcAg were frequently co-localized within the same hepatocytes, classified into Type I and Type II.
- Type II cell detection was higher during active HBV replication, and coexpression correlated with active liver cell pathological changes.
Impact:
- Provides insights into the cellular localization and co-distribution of key HBV antigens.
- Highlights the association between viral antigen expression patterns and disease activity.
- Contributes to understanding the cellular basis of liver damage in chronic Hepatitis B.
Abstract:
Expression and distribution of intrahepatic HBsAg and HBcAG were studied by double staining immunohistochemical assay in chronic liver disease. HBsAg was homogenously cytoplasmic in typing in 41 and HBcAg was cytoplasmic-membranous in 31 of 46 cases which were known to be positive for both HBsAg and HBcAg intrahepatically. The expressing sites of both HBsAg and HBcAg in 40 of the 46 cases were found to be positive in the same areas of the sections. Interestingly, it was found that intrahepatic HBsAg and HBcAg were often coexistent in the same hepatocyte, and these hepatocytes were considered to be further classifiable into type I and type II according to their distribution. The detective rate of type II cell was significantly higher during the HBV replication stage serologically. HBsAg and HBcAg coexpression in cytoplasm of hepatocyte was noticed to be closely related to active pathological change of the liver cells.
