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  • Title: Synergistic effects of combined immunosuppressive modulation. I. Unresponsiveness to dendritic cell-depleted renal allografts in dogs exposed to total-lymphoid irradiation.
    Author: Rapaport FT, Meek A, Miura S, Hayashi R, Arnold AN, Strober S.
    Journal: Transplantation; 1988 Apr; 45(4):682-6. PubMed ID: 3282348.
    Abstract:
    Attenuation of the allogeneic stimulus provided by dendritic cells (DC) was achieved by irradiation of the donors, followed by their reconstitution with bone marrow from the prospective DLA-identical recipient. Following long-term (131-187 days) recovery free of graft-versus-host (GVH) disease, the chimeric kidneys were placed into the corresponding recipients; such allografts were rejected at 55, 55, and 60 days, respectively. Four other recipients were conditioned with 1750-1790 cgy of total lymphoid irradiation (TLI) and were then given a similar chimeric kidney from the corresponding partner. These allografts currently survive for 296, 295, 290, and 252 days, respectively. A third group of four dogs was exposed to TLI prior to transplantation of a normal DLA-identical kidney. These grafts were rejected at 20, 42, 46, and 242 days, respectively. Thirteen DLA-identical renal allografts transplanted into normal dogs survived for 13-38 days (mean survival time = 28.6 days). Depletion of allogeneic DC alone, or TLI alone, produced relative prolongations in allograft survival in canine recipients. Combined use of these two modalities, however, resulted in long-term allogeneic unresponsiveness in the recipients.
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