Related Experiment Videos
An animal model for delayed hemolytic transfusion reactions
P M Ness1, R S Shirey, M H Weinstein
1Transfusion Medicine Division, Johns Hopkins Hospital, Baltimore, MD 21117-6667, USA.
Transfusion Medicine Reviews
|October 23, 2001
Summary
Delayed hemolytic transfusion reactions (DHTRs) occur days after transfusion due to prior alloimmunization. A rabbit model helps study DHTRs, delayed serologic transfusion reactions (DSTRs), and bystander hemolysis.
Area of Science:
- Transfusion Medicine
- Immunology
- Hematology
Background:
- Delayed hemolytic transfusion reactions (DHTRs) are immune-mediated hemolysis occurring 3-5 days post-transfusion.
- DHTRs often occur in previously alloimmunized patients with undetectable antibody titers.
- Delayed serologic transfusion reactions (DSTRs) present with serologic findings but no clinical hemolysis.
Purpose of the Study:
- To review DHTRs and DSTRs, including the role of complement and cytokines.
- To describe an animal model for studying DHTRs and bystander hemolysis.
- To investigate the immunologic and clinical aspects of transfusion reactions.
Main Methods:
- Development of an animal model using rabbits.
- Comprehensive review of existing literature on DHTRs and DSTRs.
- Analysis of complement and cytokine roles in transfusion reactions.
Main Results:
- The rabbit model facilitates the study of DHTRs and bystander hemolysis.
- Direct antiglobulin tests are often positive in both DHTRs and DSTRs.
- Anamnestic immune responses can lead to accelerated destruction of donor red cells.
Conclusions:
- DHTRs and DSTRs are significant transfusion complications.
- Animal models are crucial for studying transfusion reactions due to human study limitations.
- Understanding complement, cytokines, and bystander hemolysis is key to managing these reactions.