title: IgM antibody to hepatitis B core antigen (anti-HBc IgM) in "healthy" HBsAg carriers: a longitudinal study of 75 cases.
abstract: In 75 healthy HBsAg carriers with normal liver tissue who were followed over a four years period, anti-HBc IgM was determined by ELISA. 61 HBsAg carriers (81%) were positive for anti-HBc IgM at first investigation. 54 individuals demonstrated persistence of anti-HBc IgM, 7 became anti-HBc IgM-negative within the observation period. 12 persons were persistent anti-HBc IgM of low quantities. 3 of 4 individuals with HBsAg clearance demonstrated a considerable decrease of anti-HBc IgM concentration. Although signs of liver damage or development of chronic liver diseases were not observed at the time of control biopsy the existence of anti-HBcIgM indicates that there exists also in healthy HBsAg carriers a persistent stimulation by HBcAg, inducing the production of anti-HBc IgM as a sign of permanent ongoing virus B replication. These results require a new and critical review of the "healthy" HBsAg carrier state.
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis*; D002353:Carrier State / Q000276:immunology*; D006509:Hepatitis B / Q000276:immunology*; D006510:Hepatitis B Antibodies / Q000032:analysis*; D006512:Hepatitis B Core Antigens / Q000276:immunology*; D006514:Hepatitis B Surface Antigens / Q000276:immunology*; D006801:Humans; D007075:Immunoglobulin M / Q000032:analysis*; D008137:Longitudinal Studies; D011863:Radioimmunoassay; D014779:Virus Replication
chemical_list: D000914:Antibodies, Viral; D006510:Hepatitis B Antibodies; D006512:Hepatitis B Core Antigens; D006514:Hepatitis B Surface Antigens; D007075:Immunoglobulin M