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  • Title: Cyclosporin A and the humoral response to blood transfusion in the rat: definition of antigens which suppress alloantibody formation.
    Author: Propper DJ, Jones MC, Stewart KN, Catto GR, Power DA.
    Journal: Clin Sci (Lond); 1991 Jan; 80(1):9-15. PubMed ID: 1846797.
    Abstract:
    1. Blood transfusions improve renal allograft survival rates, but may induce antibodies which are directed to class I major histocompatibility complex antigens and mediate hyperacute transplant rejection. A model to study the development of such antibodies was developed in inbred strains of rats. 2. The influence of transplantation antigens shared between an initial course of blood transfusions, given with cyclosporin A, and a subsequent antigenic challenge (blood transfusion), given without cyclosporin A, on alloantibody responses to class I major histocompatibility complex antigens was then investigated. 3. Cyclosporin A administration prevented the development of alloantibodies to class I major histocompatibility complex antigens during the initial transfusion period. 4. After the challenge transfusions, alloantibody responses to class I major histocompatibility complex antigens were suppressed when class I major histocompatibility complex or minor histocompatibility antigens were shared between the initial and final transfusions. 5. This suppression only extended to third party class I antigens when minor histocompatibility complex antigens were shared between the initial and final transfusions. Sharing of class I or class II antigens had no effect on alloantibody responses to third party class I antigens coexpressed on the same cell. 6. These studies suggest that cyclosporin A given with blood transfusions may prevent clinical sensitization while permitting the development of suppressor activity, mediated by shared minor histocompatibility complex determinants, to a broad range of potential donor antigens.
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