Summary
Using light and ultrastructural immunoperoxidase techniques, we examined the distribution of hepatitis B virus (HBV)-associated antigens and the subcellular localization of hepatitis B surface antigen (HBsAg) in liver biopsies of HBsAg—positive patients with cirrhosis. The localization patterns of HBsAg in hepatocytes were membranous, cytoplasmic, festoon and inclusion body types. Cytoplasmic and festoon types were seen more often than the membranous type in pseudolobules, and hepatitis B core antigen (HBcAg)—positive cells with cytoplasmic type were distributed in the periphery of pseudolobules with active inflammation. Immunoelectron microscopy in the cytoplasmic or festoon type of HBsAg showed immunoreaction in the cisternae and on virus-like particles in the cisternae in patients with hepatitis B e antigen (HBeAg) antigenemia. Simultaneous staining of HBsAg and HBcAg revealed that hepatocytes with cytoplasmic or festoon type of HBsAg contained HBcAg—immunoreactivity. The inclusion body type of HBsAg was characteristic of liver cirrhosis with hepatocellular carcinoma (HCC); the subcellular localization of HBsAg was seen in clusters of the endoplasmic reticulum around the nucleus, and HBsAg—immunoreactivity was observed on many virus-like particles in most of the cisternae in those with HBeAg antigenemia. These findings suggest that the synthesis of HBsAg is active in patients with liver cirrhosis and that the formation of HBV is also active in those with HBeAg antigenemia and that HBV may be retained more in cirrhotic livers with hepatocellular carcinoma after proliferation than in those without it.
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Iwai, M., Kashiwadani, M., Okuno, T. et al. Immunocytochemical investigation of hepatitis B virus-associated antigens in cases of liver cirrhosis and HBsAg antigenemia and their relationship to development of hepatocellular carcinoma. Histochem J 20, 283–289 (1988). https://doi.org/10.1007/BF01745607
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DOI: https://doi.org/10.1007/BF01745607