Analysis of the priming activity of lipids generated during routine storage of platelet concentrates

Transfusion
C C SillimanD R Ambruso

Abstract

Compounds generated during the routine storage of platelet concentrates may have deleterious effects on the transfusion recipient. Daily plasma samples from platelet concentrates, both apheresis platelets and those separated from whole blood, were obtained serially during routine storage. These plasma samples were assayed for their ability to prime the NADPH oxidase in isolated human neutrophils. Quantitative and qualitative analysis of the priming agents was completed by lipid extraction, high-pressure liquid chromatography separation, and gas chromatography/mass spectroscopy. Compounds were generated in both apheresis and whole-blood platelets that significantly primed the NADPH oxidase after 24 and 48 hours of storage, respectively. The priming activity was maximal by component outdate: 2.6-fold that of the buffer-treated control neutrophils (apheresis) and 3.9-fold that of the buffer-treated control neutrophils (whole blood). These agents were generated by cellular constituents, as stored plasma did not demonstrate such priming activity. Inhibition of this priming activity by WEB 2170, a specific platelet-activating factor receptor antagonist, suggested that the observed priming involved the platelet-activating factor recep...Continue Reading

Citations

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