title: Consequences of prior alloimmunization during granulocyte transfusion.
abstract: The transfusion of leukocyte-containing blood products can lead to the production of antibodies to antigens on the surface of leukocytes. Such antibodies can be detected by a variety of techniques including assays for lymphocytotoxicity, granulocytotoxicity, and leukoagglutination. In order to evaluate the effect of preformed anti-leukocyte antibodies during granulocyte transfusion therapy, recipient beagles were sensitized to donor foxhound antigens. After being made granulocytopenic with cyclophosphamide, these animals were transfused with a set dose of granulocytes collected by continuous flow centrifugation. When compared to the results of similar transfusions to nonsensitized recipients, granulocyte transfusions to animals with preformed anti-leukocyte antibodies resulted in lower one-hour posttransfusion leukocyte increments (p less than .04) and in less migration of neutrophils through a skin abrasion into a chamber containing a strong chemoattractant, autologous serum (p less than .0001). Also, profound thrombocytopenia was found in sensitized animals, but not in nonsensitized recipients, one hour after the granulocyte transfusion.
mesh_terms: D000818:Animals; D001772:Blood Cell Count; D001792:Blood Platelets; D001803:Blood Transfusion; D002464:Cell Migration Inhibition; D003601:Cytotoxicity Tests, Immunologic; D004285:Dogs; D006098:Granulocytes / Q000276:immunology / Q000637:transplantation*; D006386:Hemagglutination Tests; D006801:Humans; D066298:In Vitro Techniques; D007518:Isoantibodies; D017708:Leukocyte Transfusion; D008214:Lymphocytes / Q000276:immunology; D008297:Male; D013921:Thrombocytopenia / Q000209:etiology; D065227:Transfusion Reaction
chemical_list: D007518:Isoantibodies