Related Experiment Video
Updated: Dec 27, 2025
Study of Experimental Organ Donation Models for Lung Transplantation
Published on: March 15, 2024
Platelet depletion limits the severity but does not prevent the occurrence of experimental transfusion-related acute
Fabrice Cognasse1,2, Sofiane Tariket1,2, Hind Hamzeh-Cognasse1
1Université de Lyon, GIMAP-EA3064, Saint-Etienne, France.
Background:
Transfusion-related acute lung injury (TRALI) is a severe pulmonary reaction due to blood transfusions. The pathophysiology of this complication is still not widely elucidated by the scientific community, especially regarding the direct role of blood platelets within the cellular mechanism responsible for the development of TRALI.
Study Design And Methods:
In this study, a mouse model was used to induce the development of antibody-mediated acute lung injury through injections of lipopolysaccharide and an anti-major histocompatibility complex Class I antibody. BALB/c mice were pretreated with an anti-GPIbα antibody, which induces platelet depletion, or ML354, a protease receptor 4 pathway inhibitor, 30 minutes before TRALI induction.
Results:
Depletion of platelets before TRALI induction appeared to reduce the severity of TRALI without completely inhibiting its development. Also, inhibition of platelet activation by ML354 did not prevent the onset of TRALI. Finally, the stimuli used for TRALI induction also triggered specific platelet activation upon ex vivo stimulation.
Conclusions:
This study suggests that blood platelets are not critically required for TRALI induction, although they are to some extent involved in its pathophysiology.
