title: [Anti-HL-A immunization in polytransfused patients according to the antigenic composition of the transfused blood].
abstract: The presence of anti-HL-A antibodies in a polytransfused person very often is a sign of a bad prognosis for survival of renal grafts or for the efficacity of leucocyte transfusion. In this paper, we describe the immunization of 5 patients who have been studied for several years. The number of units transfused as well as antigenic HL-A composition of these units are known for each patient. This enabled us to identify for each antigen, the number of blood units transfused (results given in %). Our observations confirm facts already described by several authors, study of voluntary programmed immunization, with the cells from the same donor. Furthermore, we are aware that there does not appear to be any direct relationship between proportion (absolute value) of the antigens received and specificity of antibodies. The time needed for an individual to become immunized does not appear to be related to the number of transfusions. This could lead to the modification of the criteria allowing to classify individuals as "responders" or "non-responders".
mesh_terms: D000917:Antibody Formation; D006680:HLA Antigens; D006649:Histocompatibility Antigens; D006801:Humans; D007519:Isoantigens / Q000032:analysis; D065227:Transfusion Reaction
chemical_list: D006680:HLA Antigens; D006649:Histocompatibility Antigens; D007519:Isoantigens
vernacular_title: L'immunisation anti-HL-A des polytransfusés en fonction de la composition antigénique des sangs transfusés