title: Detection of platelet antibody using rosette technique with anti-IgG antibody-coated polyacrylamide gel: a preliminary report.
abstract: Paraformaldehyde-fixed platelets from normal donors were used for detection of antibody to platelet by in vitro sensitization (indirect method) utilizing rabbit anti-human IgG heavy chain specific antibody-coated polyacrylamide gels (Immunobeads). The sensitized platelets formed rosettes with Immunobeads and the positive rosette count was over 30%, while control showed less than 8% when normal sera were used. This method was also applicable for detecting antibody-sensitized platelets in vivo (direct method) in patients with autoimmune thrombocytopenia. This method is simple, rapid and reproducible for clinical use. Direct and indirect immunofluorescent antibody tests and a blocking test with anti-human serum also supported the results of Immunobead rosetting technique.
mesh_terms: D001792:Blood Platelets / Q000276:immunology*; D005069:Evaluation Studies as Topic; D005455:Fluorescent Antibody Technique; D006801:Humans; D007518:Isoantibodies / Q000302:isolation & purification*; D012397:Rosette Formation
chemical_list: D007518:Isoantibodies