Platelet function in platelet concentrates and in whole blood

Area of Science:

• Blood banking and transfusion medicine
• Hematology
• Platelet physiology

Background:

• Understanding platelet function during storage is crucial for transfusion efficacy.
• Comparing whole blood and platelet concentrate storage conditions reveals differences in platelet viability.

Purpose of the Study:

• To compare platelet function in CPD whole blood versus platelet concentrates.
• To assess the impact of storage duration and conditions on platelet shape, nucleotide content, beta-thromboglobulin release, and aggregation.

Main Methods:

• Platelet function assays were performed on whole blood and platelet concentrates stored for 1 and 3 days.
• Evaluated platelet shape, nucleotide content, beta-thromboglobulin (beta TG) liberation, and aggregation response to ADP, collagen, sodium arachidonate, and ristocetin.

Main Results:

• Platelets in whole blood exhibited less discoid shape compared to platelet concentrates.
• Aggregation responses to ADP, collagen, and sodium arachidonate were better preserved in whole blood.
• Plasma beta-thromboglobulin levels were lower in whole blood, indicating less activation.

Conclusions:

• Platelets stored in whole blood demonstrate comparable or superior functional preservation (aggregation, nucleotide content, beta TG release) to those in platelet concentrates.
• Despite functional preservation, altered platelet shape in whole blood suggests potential for reduced in vivo survival.