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. 2003 Feb;43(2):173-6.
doi: 10.1046/j.1537-2995.2003.00289.x.

Absence of D- alloimmunization in AIDS patients receiving D-mismatched RBCs

Fouad N Boctor  1 , Nahed M Ali, Kala Mohandas, Joan Uehlinger
Affiliations

Absence of D- alloimmunization in AIDS patients receiving D-mismatched RBCs

Fouad N Boctor et al. Transfusion. 2003 Feb.

Abstract

Background: More than 80 percent of D- patients who receive D+ blood become alloimmunized to the D antigen. Anemia occurs in most AIDS patients at some point in the disease. D- patients with AIDS may require blood transfusion and, during times of blood shortage, may receive D+ RBCs. They would be expected to become alloimmunized to the d antigen.

Study design and methods: The records of the transfusion service between January 1996 and July 2000 were reviewed for D- patients who received D+ blood. IATs were performed before the initial transfusion and subsequently when the patient required further RBC transfusion.

Results: Eight D- AIDS patients who received multiple transfusions (three women and five men; age range, 31-44 years; mean, 44 years) who received between 2 and 11 units (mean, 6.25) of D+ RBCs were identified. Antibody screens were performed at 8 to 65 weeks after transfusion. It was found that none of the eight D- AIDS patients developed anti-D. ABO antibodies were found as expected. During the same period, it was found that six D- patients admitted with other diagnoses who received 1 to 9 units of D+ RBCs, all developed anti-D within 7 to 19 weeks of transfusion.

Conclusion: Patients with AIDS may not form alloantibodies to the D antigen. This may be attributable to their immunodepressed state, particularly to the decrease in CD4+ T lymphocytes. Therefore, during blood shortages, transfusion of D+ blood to D- AIDS patients may be without any subsequent consequence.

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