title: Hepatic expression of intercellular adhesion molecule-1 (ICAM-1) in viral hepatitis B.
abstract: The in situ distribution patterns of intercellular adhesion molecule-1 and human leukocyte antigen-DR antigens were studied in serial sections of 61 liver biopsy specimens from patients with hepatitis B virus infection using immunohistochemical techniques. In addition, the topographical relationship between the display of HBcAg on one hand and the expression of intercellular adhesion molecule-1 by hepatocytes on the other was analyzed with a double-staining immunohistochemical procedure in 14 selected liver biopsy samples showing chronic persistent or chronic active hepatitis and signs of active hepatitis B virus replication as reflected by the presence of variable amounts of HBcAg in a nuclear or cytoplasmic pattern of immunoreactivity. Coexpression of intercellular adhesion molecule-1 and human leukocyte antigen-DR antigens by hepatocytes correlated positively with the site and extent of the inflammatory infiltrate, which was composed of lymphocytes expressing lymphocyte function-associated antigen-1. In healthy HBsAg-positive carriers without inflammatory liver disease, no intercellular adhesion molecule-1 or human leukocyte antigen-DR expression was found on hepatocytes; in acute hepatitis, intercellular adhesion molecule-1 and human leukocyte antigen-DR were strongly expressed throughout the liver parenchyma on liver cell membranes and on sinusoidal lining cells. In chronic persistent and chronic active hepatitis and in active cirrhosis, intercellular adhesion molecule-1 and human leukocyte antigen-DR showed membranous positivity on focal clusters of hepatocytes in areas of periportal or intraacinar inflammation.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Pathology, University Hospital St. Rafaël, Catholic University of Leuven, Belgium.
authors.forename: R
authors.initials: R
authors.lastname: Volpes
authors.forename: J J
authors.initials: JJ
authors.lastname: van den Oord
authors.forename: V J
authors.initials: VJ
authors.lastname: Desmet
mesh_terms: D001344:Autopsy; D015815:Cell Adhesion Molecules / Q000032:analysis*; D006509:Hepatitis B / Q000276:immunology* / Q000473:pathology; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D006801:Humans; D007124:Immunoenzyme Techniques; D018799:Intercellular Adhesion Molecule-1; D008099:Liver / Q000276:immunology* / Q000473:pathology; D008107:Liver Diseases / Q000276:immunology; D008954:Models, Biological; D011991:Receptors, Virus / Q000032:analysis; D012016:Reference Values
chemical_list: D015815:Cell Adhesion Molecules; D006514:Hepatitis B Surface Antigens; D011991:Receptors, Virus; D018799:Intercellular Adhesion Molecule-1