[Cytokine contents in single donor platelets during storage]

Area of Science:

• Transfusion Medicine
• Hematology
• Immunology

Background:

• Single donor platelets (SDPs) are crucial for treating thrombocytopenia.
• Understanding cytokine dynamics during platelet storage is vital for transfusion safety and efficacy.
• Apheresis technology impacts platelet concentrate characteristics.

Purpose of the Study:

• To investigate cytokine level changes in SDPs during storage.
• To compare cytokine profiles across different apheresis systems (MCS(+), Trima, Amicus).
• To assess the impact of storage duration on cytokine expression in SDPs.

Main Methods:

• SDPs were collected using MCS(+), Trima, and Amicus apheresis systems.
• Platelets were stored under standard blood bank conditions.
• Cytokine levels (IL-8, RANTES, CD154, TGF-beta(1), VEGF) were quantified using ELISA at multiple time points (1, 3, 5, 7 days).

Main Results:

• All measured cytokines (IL-8, RANTES, CD154, TGF-beta(1), VEGF) showed a general increasing trend during storage.
• The increase in IL-8 levels was significantly different (p < 0.05) in SDPs collected by MCS(+) compared to Trima and Amicus.
• Apheresis platelets with lower leukocyte counts exhibited lower IL-8 expression.

Conclusions:

• SDPs express and release cytokines (IL-8, RANTES, CD154, TGF-beta(1), VEGF) during storage.
• Cytokine levels tend to increase with prolonged storage duration.
• Apheresis system choice may influence specific cytokine kinetics, particularly IL-8.