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Blood transfusions and HLA compatibility in first cadaveric kidney transplants treated with cyclosporine A
L F Garcia1, A M Arango, J E Henao
1Centro de Investigaciones Médicas, Facultad de Medicina, Universidad de Antioquia, Medellin, Colombia.
Insights
Optimizing kidney transplant success involves careful consideration of pretransplant blood transfusions and HLA matching. More transfusions (3-20) improved graft survival, while HLA-A, B, and DR compatibility significantly enhanced one-year outcomes.
Area of Science:
- Nephrology
- Immunology
- Transplantation
Background:
- Cadaveric kidney transplantation is a vital treatment for end-stage renal disease.
- Immunosuppressive therapy, such as Cyclosporine A (CsA), is crucial for graft survival.
- Factors influencing transplant success require ongoing investigation.
Purpose of the Study:
- To analyze the impact of pretransplant blood transfusions and HLA matching on one-year graft survival in first cadaveric kidney transplants.
- To determine the optimal number of transfusions and HLA compatibility for improved outcomes.
Main Methods:
- Retrospective analysis of 54 first cadaveric kidney transplants treated with CsA.
- Evaluation of graft survival rates based on the number of pretransplant blood transfusions.
- Assessment of graft survival in relation to HLA class 1 (A, B) and class 2 (DR) mismatches.
Main Results:
- Overall one-year graft survival was 80.7%.
- Graft survival was significantly higher (93.7%) in patients receiving 3 to 20 pretransplant transfusions compared to those with <3 or >20 transfusions (66.7%).
- Reduced HLA mismatches (0-2 for HLA-A+B, 0 for HLA-DR) correlated with improved graft survival, with additive effects observed for HLA-B and HLA-DR.
Conclusions:
- The number of pretransplant blood transfusions and HLA compatibility are critical determinants of one-year graft survival in cadaveric kidney transplantation.
- Strategic transfusion protocols and meticulous HLA matching can potentially optimize transplant outcomes.
Abstract:
One-year graft survival of 54 first cadaveric kidney transplants that received immunosuppressive treatment with CsA was analyzed with respect to the number of random pretransplant blood transfusions and the HLA class 1 and class 2 matching. Overall graft survival at 1 year was 80.7%. Patients with 3 to 20 pretransplant transfusions had a survival of 93.7% compared with 66.7% in those with less than three or more than 20 transfusions. All kidneys transplanted with two or less HLA-A + B mismatches survived at 1 year. With three mismatched antigens survival was of 88.9%. This value was reduced to 66.7% for four incompatibilities. A similar situation was found for HLA-DR matching since all kidneys with full compatibility survived at 1 year compared with 90.9% and 66.7% for one and two mismatches, respectively. HLA-B and HLA-DR exhibited an additive effect since again all grafts with two or less mismatches survived, whereas in the group with three different antigens this figure was 90% and only 1 of the three kidneys with completely different antigens survived.