title: Influence of HBV replication and delta agent superinfection on T cell subsets and killer (Leu 7+) in chronic hepatitis B virus infection.
abstract: Peripheral blood T-lymphocyte subsets and cells reacting for Leu 7 antigen, which identifies a subset of killer and natural killer cells, have been examined in 32 patients chronically infected by the hepatitis B or D viruses (HBV, HDV) and in 28 normal subjects. The T8+ lymphocytes were increased and the T4/T8 ratio was decreased in patients with HBV replication (identified by the presence of HBcAg in liver and HBV-DNA in serum) and in patients with HDV infection (HDAg in liver). These patients had more active liver disease than patients without evidence of viral replication, B or D, who showed normal lymphocyte counts. Leu 7+ lymphocytes were also increased in patients with viral replication and active disease and correlated positively with alaninaminotransferase serum levels. These observations suggest the participation of both T8+ and Leu7+ cells in the pathogenesis of liver cell injury in HBsAg-positive chronic liver disease.
mesh_terms: D000945:Antigens, Differentiation, T-Lymphocyte; D000950:Antigens, Ly / Q000276:immunology*; D000954:Antigens, Surface / Q000276:immunology*; D004261:DNA Replication; D006509:Hepatitis B / Q000276:immunology*; D006515:Hepatitis B virus / Q000502:physiology; D003699:Hepatitis D / Q000276:immunology*; D003698:Hepatitis Delta Virus / Q000502:physiology; D006521:Hepatitis, Chronic / Q000276:immunology*; D006801:Humans; D007694:Killer Cells, Natural / Q000276:immunology*; D013601:T-Lymphocytes / Q000145:classification*; D014779:Virus Replication
chemical_list: D000945:Antigens, Differentiation, T-Lymphocyte; D000950:Antigens, Ly; D000954:Antigens, Surface