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Interleukin-8 production in red blood cell incompatibility
R D Davenport1, R M Strieter, T J Standiford
1Department of Pathology, University of Michigan Medical School, Ann Arbor.
Blood
|December 15, 1990
Summary
Interleukin-8 (IL-8) production increases during hemolytic transfusion reactions (HTR) when red blood cells are incompatible. This cytokine
Area of Science:
- Immunology
- Hematology
- Transfusion Medicine
Background:
- Hemolytic transfusion reactions (HTR) share symptoms with sepsis, including fever and organ failure.
- Neutrophils are suspected in HTR pathogenesis, but activation mechanisms and cytokine roles remain unclear.
Purpose of the Study:
- To investigate the role of cytokines, specifically interleukin-8 (IL-8), in the pathogenesis of HTR.
- To explore the mechanism of neutrophil activation in HTR.
Main Methods:
- Measuring IL-8 production in whole blood with ABO-incompatible red blood cells.
- Assessing IL-8 production in relation to hemolysis degree, time, and complement activity.
- Analyzing gene expression in the buffy coat.
Main Results:
- IL-8 is produced in a dose- and time-dependent manner following the addition of ABO-incompatible red blood cells.
- IL-8 production correlates with the degree of hemolysis and is inhibited by complement inactivation.
- Increased gene expression in the buffy coat accompanies IL-8 production.
Conclusions:
- Interleukin-8 (IL-8) is a key cytokine involved in the pathogenesis of hemolytic transfusion reactions (HTR).
- IL-8 production is linked to complement activation and hemolysis, suggesting a mechanism for neutrophil involvement in HTR.
- Understanding IL-8's role may lead to new therapeutic strategies for HTR.