title: An investigation on rheumatoid factor of different immunoglobulin classes in hepatitis B virus carriers.
abstract: Rheumatoid factor (RF) is known to be present very frequently in HB virus carriers. When RF was assayed in 140 asymptomatic carriers by agglutination method, 20.0% were found to be positive, whereas 2.7% in the controls (p less than 0.01). ELISA for detection of RF isotypes showed RF in carriers to be almost IgMRF only. IgMRF showed a tendency to react more readily to human IgG rather than to rabbit IgG. The incidence of IgMRF positivity was higher among anti-HBe antibody-positive carriers than among anti-HBe antibody negative ones, but the difference between the two populations was not significant. However, the incidence of IgMRF positivity in the group showing hepatic dysfunctions was found to be significantly higher than in the group with normal hepatic functions.
authors.affiliation: Second Department of Internal Medicine, Fukushima Medical College, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Watanabe
authors.forename: Y
authors.initials: Y
authors.lastname: Ohkubo
authors.forename: Y
authors.initials: Y
authors.lastname: Funahashi
authors.forename: T
authors.initials: T
authors.lastname: Nishimaki
authors.forename: T
authors.initials: T
authors.lastname: Moritoh
authors.forename: R
authors.initials: R
authors.lastname: Kasukawa
authors.forename: S
authors.initials: S
authors.lastname: Kaise
authors.forename: T
authors.initials: T
authors.lastname: Tomita
authors.forename: A
authors.initials: A
authors.lastname: Matsukawa
mesh_terms: D000372:Agglutination Tests; D000906:Antibodies / Q000276:immunology; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006509:Hepatitis B / Q000276:immunology*; D006513:Hepatitis B e Antigens / Q000276:immunology; D006801:Humans; D007074:Immunoglobulin G / Q000276:immunology; D007075:Immunoglobulin M / Q000276:immunology; D007136:Immunoglobulins / Q000145:classification / Q000276:immunology*; D008297:Male; D008623:Mercaptoethanol / Q000494:pharmacology; D008875:Middle Aged; D012217:Rheumatoid Factor / Q000276:immunology*
chemical_list: D000906:Antibodies; D006513:Hepatitis B e Antigens; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins; D008623:Mercaptoethanol; D012217:Rheumatoid Factor