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  • Title: Rescue therapy with tacrolimus after combined kidney/pancreas and isolated pancreas transplantation in patients with severe cyclosporine nephrotoxicity.
    Author: Hariharan S, Munda R, Cavallo T, Demmy AM, Schroeder TJ, Alexander JW, First MR.
    Journal: Transplantation; 1996 Apr 27; 61(8):1161-5. PubMed ID: 8610411.
    Abstract:
    This study details 11 pancreas transplant recipients (10 combined kidney and pancreas and 1 pancreas after kidney) who were converted to tacrolimus (FK506) due to acute severe cyclosporine nephrotoxicity in 8 cases and persistent rejection with cyclosporine toxicity in three cases. Arteriolopathy was documented by renal histology in all cases. Cyclosporine was discontinued for 24 hr immediately prior to initiation of tacrolimus. Tacrolimus was started orally at 0.1 mg/kg twice daily with dose adjustments to maintain whole blood trough levels of 8-15 ng/mL by IMx. Tacrolimus was initiated a mean of 14.5 months (range 1-81) after pancreas transplantation. The mean serum creatinine level had increased to 2.9 mg/dl from 1.0 mg/dl at the diagnosis of cyclosporine arteriolopathy (P=0.003). The mean serum creatinine and blood glucose levels at the time of initiation of tacrolimus were 2.1 mg/dl and 104 mg/dl, respectively. Serum creatinine was 1.7 mg/dl, 1.9 mg/dl, 1.8 mg/dl, and 1.7 mg/dl after 1, 2, 3, and 6 months of tacrolimus therapy, respectively; ANOVA (P = 0.02). The corresponding blood glucose levels were 117 mg/dl, 112 mg/dl, 109 mg/dl, and 116 mg/dl, respectively (P=NS). Normal C-peptide levels were present before (5.9 ng/ml) and after (6.2 ng/ml), the initiation of tacrolimus therapy (P=NS), and mean HbA1C was 6.1% before and 6.3% after tacrolimus therapy, (P=NS). There were 4 episodes of acute rejection, 3 responded to intravenous methylprednisolone, and 1 required OKT3 during tacrolimus therapy. Reversible tacrolimus nephrotoxicity was noted in three patients without any evidence of progressive vasculopathy. All 11 patients are alive, and 10/11 kidney and pancreas grafts are functioning with a mean follow-up of 7.7 months (range 5-10). In this study, conversion from cyclosporine to tacrolimus in kidney and pancreas recipients resulted in improvement and stabilization of renal function while maintaining stable blood glucose, C peptide, and HbA1C levels.
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