Abstract
Antigranulocyte antibodies are involved in the pathophysiology of a number of clinical disorders, which include: febrile transfusion reactions, severe pulmonary reactions to transfusion, auto-immune neutropenia, drug-induced neutropenia, and iso-immune neonatal neutropenia. Owing to the inherent difficulties of manipulating granulocytes in vitro, many of the serological techniques described for the detection of antigranulocyte antibodies are complex and sometimes difficult to reproduce. We describe the detection of alloreactive granulocyte antibodies using flow cytometric analysis of donor leucocyte suspensions in an indirect immunofluorescent test. The technique provides a semiquantitative detecion of granulocyte antibodies in two groups of patients studied and, by providing as a comparison the reactivity on the corresponding mononuclear leucocytes, allows the distinction between granulocyte- specific antibodies and antibodies directed against the histocompatibility antigens.
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