Changes in leucocyte migration after renal transplantation

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Abstract
The leucocyte migration test, an in-vitro measure of cellular immunity, has been used to follow the changes in cell-mediated hypersensitivity to kidney and histocompatibility antigens in three patients after renal transplantation. Inhibition of leucocyte migration, indicating strong sensitization to the antigens used, occurred in each patient, starting five to seven days after transplantation. Satisfactory renal function had not been established in any of the patients at this time. In one case inhibition of leucocyte migration persisted almost continuously until the 24th day and was associated with poor renal function proved histologically to be due to rejection. Treatment with increased dosage of prednisone was associated with a rapid reversion to normal of the migration index and improvement in renal function. Later, inhibition of migration occurred again, and shortly afterwards the graft ceased to function. In the other two cases the migration index became normal without alteration in immunosuppressive therapy and a satisfactory diuresis followed. It is suggested that this simple test should prove useful in the specific diagnosis of rejection and in control of immunosuppressive therapy.