Effects and Side Effects of Platelet Transfusion

Area of Science:

• Immunology
• Hematology
• Transfusion Medicine

Background:

• Platelets are recognized for roles beyond hemostasis, including immune regulation.
• Platelet transfusion products may contain inflammatory mediators.
• The immunological functions of platelets are increasingly investigated.

Purpose of the Study:

• To review the proinflammatory effects and side effects of platelet transfusion.
• To discuss how platelet processing and storage impact their biological functions.
• To highlight the role of accumulated biological response modifiers (BRMs) in transfusion reactions.

Main Methods:

• Literature review of recent reports on platelet immunology and transfusion reactions.
• Analysis of platelet activation and BRM release during collection, preparation, and storage.
• Synthesis of evidence linking BRMs in platelet concentrates to recipient immune responses.

Main Results:

• Platelet preparation and storage induce stress, leading to platelet activation and BRM release.
• Platelet concentrates accumulate significant levels of BRMs.
• Transfused BRMs can trigger immune responses and adverse reactions in recipients.

Conclusions:

• Accumulated BRMs in platelet concentrates are a significant factor in transfusion-related inflammatory effects.
• Platelets possess immune cell-like properties relevant to transfusion outcomes.
• Future research must integrate the immunological role of platelets into transfusion science.