Systems analysis of metabolism in platelet concentrates during storage in platelet additive solution.
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Sigurjónsson, Ólafur E
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CitationSystems analysis of metabolism in platelet concentrates during storage in platelet additive solution 2018, 475(13):2225-2240 Biochemical journal
AbstractPlatelets (PLTs) deteriorate over time when stored within blood banks through a biological process known as PLT storage lesion (PSL). Here, we describe the refinement of the biochemical model of PLT metabolism, iAT-PLT-636, and its application to describe and investigate changes in metabolism during PLT storage. Changes in extracellular acetate and citrate were measured in buffy coat and apheresis PLT units over 10 days of storage in the PLT additive solution T-Sol. Metabolic network analysis of these data was performed alongside our prior metabolomics data to describe the metabolism of fresh (days 1-3), intermediate (days 4-6), and expired (days 7-10) PLTs. Changes in metabolism were studied by comparing metabolic model flux predictions of iAT-PLT-636 between stages and between collection methods. Extracellular acetate and glucose contribute most to central carbon metabolism in PLTs. The anticoagulant citrate is metabolized in apheresis-stored PLTs and is converted into aconitate and, to a lesser degree, malate. The consumption of nutrients changes during storage and reflects altered PLT activation profiles following their collection. Irrespective of the collection method, a slowdown in oxidative phosphorylation takes place, consistent with mitochondrial dysfunction during PSL. Finally, the main contributors to intracellular ammonium and NADPH are highlighted. Future optimization of flux through these pathways provides opportunities to address intracellular pH changes and reactive oxygen species, which are both of importance to PSL. The metabolic models provide descriptions of PLT metabolism at steady state and represent a platform for future PLT metabolic research.
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- Evaluation of the automated collection and extended storage of apheresis platelets in additive solution.
- Authors: Johnson L, Winter KM, Hartkopf-Theis T, Reid S, Kwok M, Marks DC
- Issue date: 2012 Mar
- Buffy-coat platelet variables and metabolism during storage in additive solutions or plasma.
- Authors: Zhang JG, Carter CJ, Culibrk B, Devine DV, Levin E, Scammell K, Weiss S, Gyongyossy-Issa MI
- Issue date: 2008 May
- Quantitation of coated platelet potential during collection, storage, and transfusion of apheresis platelets.
- Authors: Charania R, Smith J, Vesely SK, Dale GL, Holter J
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