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Blood donation leads to a decrease in natural killer cell activity: a study in normal blood donors and cancer
R L Marquet1, M A Hoynck van Papendrecht, O R Busch
1Department of Surgery, Erasmus University, Rotterdam, The Netherlands.
Transfusion
|May 1, 1993
Summary
Blood donation may impact immune cells, particularly natural killer (NK) cells, in both healthy donors and colorectal cancer patients. This study evaluated the immunological effects of autologous blood donation, finding transient NK cell function depression.
Area of Science:
- Immunology
- Transfusion Medicine
- Oncology
Background:
- Transfusion-induced immunosuppression is beneficial for transplant patients.
- Retrospective studies suggest blood transfusions may harm cancer patients.
- Autologous blood donation is assumed to be immunologically neutral.
Purpose of the Study:
- To evaluate the immunological neutrality of autologous blood donation.
- To assess the impact of blood donation on immune cell populations and functions in normal donors and colorectal cancer patients.
Main Methods:
- Flow cytometric analysis of B, T, and NK cells.
- Monitoring of lymphocyte counts and T-cell function (phytohemagglutinin stimulation).
- Assessing NK cell function before and after blood donation (1-2 units).
Main Results:
- Blood donation did not alter proportions of B, T, or NK cells.
- A temporary decrease in total lymphocytes was observed in normal donors.
- NK cell function was significantly depressed in normal donors and colorectal cancer patients post-donation.
Conclusions:
- Autologous blood donation is not immunologically neutral.
- Blood donation transiently impairs NK cell function in healthy individuals.
- Colorectal cancer patients exhibit a more pronounced and prolonged depression of NK cell activity after donation.