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Platelet storage media.

H Gulliksson1

  • 1Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, and Karolinska Institutet, Stockholm, Sweden.

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Summary
This summary is machine-generated.

Novel platelet additive solutions (PAS) with glucose may be necessary for maintaining platelet (PLT) ATP levels during storage, especially with reduced plasma content. However, adding calcium and bicarbonate may not improve storage outcomes.

Keywords:
bicarbonatecalciumglucoseplatelet additive solutionsplatelet additive solutions-Gplatelet storage media

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Area of Science:

  • Blood banking and transfusion medicine
  • Biochemistry and cellular metabolism
  • Biomaterials and solution development

Background:

  • Current platelet storage media (platelet additive solutions, PAS) typically contain acetate, citrate, phosphate, potassium, and magnesium.
  • There is growing interest in developing PAS for reduced residual plasma content (<15-20%).
  • Glucose, calcium, and bicarbonate have been proposed as additives to improve platelet storage in low-plasma environments.

Purpose of the Study:

  • To review and analyze the impact of novel platelet additive solutions (PAS) on platelet (PLT) storage, particularly with reduced plasma content.
  • To evaluate the necessity of glucose, calcium, and bicarbonate in experimental PAS formulations.
  • To assess the in vitro performance of platelets stored in novel PAS compared to conventional solutions.

Main Methods:

  • Review of limited studies on experimental PAS formulations (InterSol-G, PAS-5, M-sol, PAS-G, SAS).
  • Analysis of in vitro data on platelet metabolism, ATP levels, and storage efficacy.
  • Comparison of platelet storage outcomes in novel PAS with varying plasma inclusion levels (5% to 35%) against standard solutions (SSP+, CompoSol).

Main Results:

  • Glucose appears necessary in PAS for maintaining platelet ATP levels, especially when plasma content is below 15-20%.
  • Calcium showed effects at 5% plasma inclusion but not at 20-35%, indicating plasma content is crucial.
  • Bicarbonate aids pH regulation at low plasma inclusion (~5%), while potassium and magnesium effects on glycolysis varied among solutions.
  • Novel PAS with glucose, calcium, and bicarbonate did not show improved in vitro results compared to standard solutions at 35% plasma inclusion.

Conclusions:

  • Glucose addition is likely essential for platelet metabolism in PAS with significantly reduced plasma content.
  • The role of calcium and bicarbonate in PAS efficacy is dependent on the residual plasma volume.
  • Excess glucose in novel PAS may not offer additional benefits for platelet metabolism.
  • Further research is needed to optimize novel PAS formulations for extended platelet storage.