title: Anti-Ia reactivity in sera of untreated patients with active Hodgkin's disease.
abstract: The effect of sera from eight patients with Hodgkin's disease on the autologous and allogeneic mixed lymphocyte response of normal individuals was examined. Sera from three patients with active disease caused marked inhibition of both autologous and allogeneic mixed lymphocyte reaction without inducing significant reduction of the phytohemagglutinin-induced proliferative response. The inhibitory activity of Hodgkin's disease sera on the autologous mixed lymphocyte reaction was removed by adsorption with non-T, but not T, lymphocytes and it was correlated with the ability of such sera to block the binding of monoclonal anti-Ia antibody to Ia-positive target cells. Anti-Ia antibodies were detected in the same sera by double antibody radioimmunoassay and analysis on sodium dodecyl sulfate-polyacrylamide gel electrophoresis, using 125I-labeled, partially purified, Ia antigens from two different human B-cell lines. This anti-Ia reactivity was strongly reduced or absent in sera taken from the same patients at the completion of multidrug chemotherapy.
authors.forename: S
authors.initials: S
authors.lastname: Romagnani
authors.forename: F
authors.initials: F
authors.lastname: Almerigogna
authors.forename: M G
authors.initials: MG
authors.lastname: Giudizi
authors.forename: R
authors.initials: R
authors.lastname: Biagiotti
authors.forename: D
authors.initials: D
authors.lastname: Centis
authors.forename: A
authors.initials: A
authors.lastname: Alessi
authors.forename: M
authors.initials: M
authors.lastname: Ricci
authors.forename: R
authors.initials: R
authors.lastname: Tosi
mesh_terms: D000906:Antibodies / Q000032:analysis* / Q000502:physiology; D000918:Antibody Specificity; D004358:Drug Therapy; D005260:Female; D000949:Histocompatibility Antigens Class II / Q000276:immunology*; D006689:Hodgkin Disease / Q000276:immunology*; D006801:Humans; D007959:Lymphocyte Culture Test, Mixed; D008214:Lymphocytes / Q000276:immunology; D011863:Radioimmunoassay / Q000379:methods
chemical_list: D000906:Antibodies; D000949:Histocompatibility Antigens Class II