Comparison of T cell responses in patients with a long-term surviving renal allograft versus a long-term surviving liver allograft. It's a different world.
1996
The aim of the present study was to analyze whether acquired transplantation tolerance had developed in patients with a long-term surviving renal or liver allograft. Analysis of antidonor cytotoxic T cell precursor frequencies was performed in 31 renal allograft recipients and 9 liver allograft recipients with good graft function 2 years after transplantation. The results demonstrated that, before transplantation, normal antidonor T cell responses were generated in both groups of patients. Two years after transplantation, donor-specific CTL nonresponsiveness had developed in a minority of the renal transplant recipients. In contrast, 8 out of 9 liver transplant recipients showed donor-specific mixed lymphocyte culture and CTL nonresponsiveness. These findings indicate that development of donor-specific T cell nonresponsiveness is not a common event after kidney transplantation, whereas liver transplantation seems to induce, at least in vitro, a state of donor-specific T cell nonresponsiveness.
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