Abstract
PBLs from 10 normal seropositive donors, 15 precardiac transplant patients, and 17 postcardiac transplant patients have been assayed for their ability to mount a cytotoxic T cell response to both A- and B-type EBV. Compared with the results obtained with healthy seropositive donors, pre- and posttransplant patients had significantly weaker T cell responses against both A-type and B-type EBV. Analysis of individual patients showed a preferential T cell response to B-type EBV in 4/15 pre- and 6/17 posttransplant patients and a preferential T cell response to A-type EBV in 1/15 pretransplant and 2/17 posttransplant recipients. PBMCs were obtained from patients and analyzed for the presence of A- and B-type EBV using polymerase chain reaction. EBV types detected in the PBMCs of each individual were correlated with their EBV-specific CTL response. The results obtained indicated that the EBV-specific cytotoxic T cell response of these patients matched the EBV types with which they were infected.
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