Browsing by Author "Tkaczuk, Jean"

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    Effects of Intraoperative versus Postoperative Administration of Rabbit Antithymocyte Antibodies on 1-Year Renal Function in Renal Transplant Patie
    (Başkent Üniversitesi, 2006-06) Kamar, Nassim; Esposito, Laure; Ribes, David; Tkaczuk, Jean; Cointault, Olivier; Lavayssiere, Laurence; Abbal, Michel; Durand, Dominique; Rostaing, Lionel
    Objectives: The aim of our study was to prospectively assess 1-year allograft outcomes and the evolution of lymphocyte subsets in a group of renal transplant patients who had received intraoperative rabbit antithymocyte antibodies (RATG). Materials and Methods: We compared 1-year allograft transplant outcomes in renal transplant recipients who had received intraoperative RATG (group 1, n = 53) with the outcomes observed in patients in a historical control group who had received postoperative RATG (group 2, n = 49). RATG were given at the same dosage (1 mg/kg) during the first 3 days, and then the dosage was adapted according to CD2 count, until calcineurin inhibitors were started. Results: The overall dosage of RATG administered was significantly lower in group 1. At day 4, CD2, CD3, and CD19 T-cell subset counts were significantly higher in patients in group 1. From 3 months after transplantation, CD4/CD8 ratios were significantly lower in patients in group 1 because of a rapid regeneration of CD8 T cells. One-year total lymphocyte counts were significantly higher in patients in group 1. There were fewer severe infectious complications in patients in group 1. One-year renal function was better in patients in group 2. Donor age was the only independent factor associated with renal function at both 1 month and 1 year after transplantation. Conclusions: When RATG are infused intraoperatively, a lower total amount of RATG is required to prevent acute rejection as compared with postoperative RATG infusion. Consequently, fewer serious lymphopenia-associated complications are observed during the first year after transplantation