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. 2023 Dec 9;38(1-2):e24994. doi: 10.1002/jcla.24994

TABLE 1.

Major BMRs released by platelets at 22°C storage and their relations with clinical practice.

BMRs Location in platelets Function Changes in BMRs and their potential relationship with clinical practice
sCD40L (CD154) 6 , 63 , 64 , 65 , 66 , 90 , 93 α‐ Granule
  • Activates leukocytes for adhesion, superoxide production, infiltration, and proinflammatory cytokines release.

  • Promotes B lymphocytes antibody production.

  • Induces endothelial cells expression surface adhesion molecules.

  • Related to Arteriosclerosis, Systemic lupus erythematosus (SLE), Graft rejection, etc.

  • Increased levels during storage and lower concentrations in Bicarbonated Ringer's solution supplemented with acid‐citrate‐dextrose Formula A (BRS‐A).

  • Accumulated during storage in PAS‐III than plasma and other types PAS.

  • Transfusion‐related acute lung injury (TRALI).

  • Nonhemolytic transfusion reactions (NHTRs).

  • Allergic transfusion reaction.

RANTES (CCL5) 6 , 67 , 68 , 69 , 86 , 90 , 93 α‐ Granule
  • Chemotactic for T cells, eosinophils, basophils and mast cells.

  • Involved in acute and chronic inflammation.

  • Cancer progression.

  • Elevated during storage and decreased release after adenosine diphosphate (ATP)‐induced aggregation.

  • Levels increased during storage in PAS‐III than plasma and other types PAS.

  • Higher in NHTRs and allergic transfusion reactions but they were not simply related.

Phosphatidylserine (PS) 16 , 35 , 36 , 37 , 106 Platelet plasma membrane
  • A marker of platelet activation and coagulation by binding with coagulation factors, bridge with TAM receptors through the GAS6, bind to thrombomodulin to catalyze the production of activated protein C (APC).

  • Mediating platelet clearance.

  • Increased PS positive events.

  • Higher PS‐exposing platelets were more suitable for high‐risk patients to stop bleeding.

  • Exposure was different from activation and might be associated with ROS.

Platelet Microparticles (PMPs) 72 , 76 , 79 , 80 , 81 , 90 , 93
  • Intercellular communication.

  • Acquire different proteins from plasma.

  • Involved in immune and inflammatory responses such as downregulating macrophages and modifying the development of dendritic cells, activating polymorphonuclear neutrophil (PMN) respiratory burst, stimulating B cells to produce antibodies.

  • Increased concentrations during storage both in plasma and BRS‐A, but lower in latter.
  • Concentrations increased in PAS on day 5.
  • No influence on concentrations after leukoreduction.
  • Various biological modifiers:
    • PS, TF for coagulation and PS may also mediated the uptake of PMPs by macrophages;
    • sCD40L concentration was significantly related with PMN respiratory burst and potentially associated with TRALI.
microRNA 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58
  • miR127 and miR320a increased during 7 days storage and can be biomarkers for platelet function.

  • miR‐326 and miR‐145 was positively correlated with platelet function.

  • miR‐570 interacted with mitochondrial ATPase subunit.

  • miR‐326, miRNA‐103 and miRNA let‐7b were related with platelet apoptosis.

  • miR‐181a and miR‐320c reduced platelets activation.