title: Expression of OKT 8 antigen and Fc gamma receptors by suppressor cells mediating specific unresponsiveness between recipient and donor in renal-allograft-tolerant patients.
abstract: Renal allograft tolerant patients show specific unresponsiveness in mixed-lymphocyte culture assays when confronted with donor stimulating cells. Separation of posttransplant peripheral blood lymphocytes into Fc gamma + and Fc gamma - by rosetting and into OKT8+, OKT8- by cytofluorometry enabled the demonstration of normal responses by Fc gamma - and OKT8- cells, whereas the proliferation of OKT8+ and Fc gamma + cells was depressed specifically in the presence of donor cells. Using mixing experiments, we showed that OKT8+ and Fc gamma + posttransplant lymphocytes exert a suppressive effect specific to the donor-recipient pair on the proliferative response of the pretransplant lymphocytes.
mesh_terms: D000328:Adult; D000941:Antigens / Q000276:immunology*; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D007108:Immune Tolerance; D007668:Kidney / Q000276:immunology; D016030:Kidney Transplantation; D007959:Lymphocyte Culture Test, Mixed; D008297:Male; D008875:Middle Aged; D011961:Receptors, Fc / Q000276:immunology*; D017452:Receptors, IgG; D012397:Rosette Formation; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*; D014019:Tissue Donors; D014181:Transplantation Immunology; D014184:Transplantation, Homologous
chemical_list: D000941:Antigens; D011961:Receptors, Fc; D017452:Receptors, IgG