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Related Experiment Videos

Cryopreserved platelets have decreased adhesive capacity.

M Owens1, C Cimino, J Donnelly

  • 1Department of Medicine, University of Rochester Medical Center, Rochester, New York.

Transfusion
|February 1, 1991
PubMed
Summary

Freezing blood platelets for transfusions preserves their lifespan but impairs their adhesive function. Frozen platelets show significantly reduced adhesion compared to fresh ones, while 5-day stored platelets maintain good adhesive capacity.

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Area of Science:

  • Hematology
  • Transfusion Medicine
  • Cryobiology

Background:

  • Platelet alloimmunization necessitates alternative transfusion strategies.
  • Frozen platelets offer a viable option for alloimmunized patients.
  • In vitro functional deficits of frozen platelets require further investigation.

Purpose of the Study:

  • To compare the adhesive properties of frozen-thawed platelets versus fresh platelets.
  • To evaluate the adhesive capacity of 5-day stored platelets.
  • To assess the impact of cryopreservation on platelet function.

Main Methods:

  • Modified Baumgartner chamber perfusion studies were employed.
  • Paired comparisons were made between fresh, frozen, and 5-day stored platelets from the same blood unit.

Related Experiment Videos

  • Dimethyl sulfoxide (DMSO) was used as a cryoprotectant for freezing.

    • Main Results:

    • Platelet recovery after freeze-thaw was 73% ± 8%.
    • Frozen platelets demonstrated significantly reduced adhesion (53% of fresh, p=0.04).
    • Five-day stored platelets showed a minor, non-significant decrease in adhesion (86%, p=0.197).

    Conclusions:

    • Cryopreserved platelets exhibit a significant defect in adhesive capacity.
    • Standard 5-day blood bank storage preserves platelet adhesive function effectively.
    • Frozen platelets may have limitations in transfusion support due to impaired adhesion.