Evaluation of four methods for platelet compatibility testing
Four platelet compatibility assays were performed on serum and platelet or lymphocyte samples from 38 closely HLA-matched donor/recipient pairs involved in 55 single-donor platelet transfusions. The 22 patients studied were refractory to transfusions of pooled random-donor platelets. Of the four assays (platelet suspension immunofluorescence, PSIFT; /sup 51/Cr release; microlymphocytotoxicity; and a monoclonal anti-IgG assay, MAIA), the MAIA was most predictive of platelet transfusion outcome (predictability, 74% for one-hour posttransfusion platelet recovery and 76% for 24-hour recovery). The only other assay to reach statistical significance was the PSIFT (63% predictability for one-hour posttransfusion recovery). The degree of HLA compatibility between donor and recipient (exact matches v those utilizing cross-reactive associations) was unrelated to the ability of the MAIA to predict transfusion results. The MAIA may be capable of differentiating HLA antibodies, ABO antibodies, and platelet-specific antibodies responsible for failure of HLA-matched and selectively mismatched single-donor platelet transfusions.
- Research Organization:
- Blood Center of Southeastern Wisconsin, Milwaukee
- OSTI ID:
- 6274843
- Journal Information:
- Blood; (United States), Vol. 5
- Country of Publication:
- United States
- Language:
- English
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CHROMIUM 51
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TRANSFUSIONS
IMMUNOLOGY
BLOOD PLATELETS
IMMUNE REACTIONS
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ANTIBODIES
BETA DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BLOOD
BLOOD CELLS
BODY FLUIDS
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ELECTRON CAPTURE RADIOISOTOPES
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551001* - Physiological Systems- Tracer Techniques