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Related Concept Videos

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Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
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Related Experiment Video

Updated: Sep 10, 2025

Measurement of T Cell Alloreactivity Using Imaging Flow Cytometry
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From metabolomics to transfusion-associated immunomodulation.

Angelo D'Alessandro1, James C Zimring2

  • 1Department of Biochemistry and Molecular Genetics, University of Colorado Denver - Anschutz Medical Campus, Aurora, CO, USA.

Current Opinion in Immunology
|August 23, 2025
PubMed
Summary

Metabolomics reveals that stored blood products undergo biochemical changes impacting immune responses. This understanding paves the way for personalized transfusion strategies based on metabolic profiles, improving patient outcomes.

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Area of Science:

  • Biochemistry
  • Immunology
  • Transfusion Medicine

Background:

  • Stored blood products, particularly packed red blood cells, undergo significant biochemical alterations during storage.
  • These changes, known as storage lesions, impact recipient immune responses, a process termed transfusion-related immunomodulation (TRIM).

Purpose of the Study:

  • To review recent advances in metabolomics for understanding TRIM.
  • To highlight the biochemical changes in stored blood and their effects on recipient immunity.

Main Methods:

  • Review of recent literature on metabolomics and transfusion-related immunomodulation.
  • Analysis of biochemical shifts in stored blood products, focusing on packed red blood cells.

Main Results:

  • Metabolomics identified accumulation of oxidized lipids, extracellular vesicles, free heme, and iron in stored blood.
  • These metabolites modulate recipient immunity via inflammatory and immunosuppressive pathways.
  • Transfusion outcomes depend on storage duration and donor-specific metabolic profiles.
  • Novel biomarkers like hypoxanthine and kynurenine correlate with transfusion quality.

Conclusions:

  • Metabolomics redefines transfusion as an active biochemical intervention.
  • Future strategies may involve selecting blood units based on metabolic profiles for improved safety and outcomes.