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  • Title: Clinicoepidemiologic study of posttransplant diabetes after living-donor renal transplant.
    Author: Elmagd MM, Bakr MA, Metwally AH, Wahab AM.
    Journal: Exp Clin Transplant; 2008 Mar; 6(1):42-7. PubMed ID: 18405244.
    Abstract:
    OBJECTIVES: We sought to evaluate posttransplant diabetes mellitus with regard to its incidence, risk factors for occurrence, complications, impact on graft function, and impact on patient and graft survival rates. MATERIALS AND METHODS: A total of 1,580 patients received living-donor renal allografts at Mansoura University, Egypt, between March 1976 and November 2004. Of these, 286 recipients developed diabetes after transplant (diabetic group). These patients were matched with 316 kidney transplant recipients who did not develop diabetes after transplant (control group). A complete clinical history was obtained and a clinical examination was done. Laboratory analyses including urine analysis, complete blood count, total serum cholesterol, fasting and 2-hour postprandial plasma glucose, Hb A1c, serum creatinine, and creatinine clearance were obtained in all patients. In each patient, presence of hepatitis B and C was determined with polymerase chain reaction, and a graft biopsy was obtained to diagnose renal allograft rejection. RESULTS: The onset of diabetes mellitus among our recipients occurred primarily during the first 6 months after transplant (in 52.4% of the patients). Significant correlations were found between posttransplant diabetes mellitus and the recipients' age (P = .0001), obesity (P = .001), positive family history of diabetes mellitus (P = .001), hepatitis C virus infection (P = .039), cumulative dose of steroids in the first 3 months (P = .047), and calcineurin inhibitor-based immunosuppressive therapy (P = .001). Moreover, posttransplant diabetes mellitus significantly affected rates of coronary heart disease (P = .001), hypertension (P = .02), and hypercholesterolemia (P = .001). Graft survival was similar in both groups until 15-year follow-up, at which time graft survival began to decrease in patients with diabetes mellitus compared with those without diabetes mellitus (43.5% vs 53.6%, P = .013). Similarly, patient survival was similar until 8-year follow-up, at which time survival rates began to decline in patients with diabetes as compared with patients without diabetes (79.9% vs 86.1%, P = .001); this trend continued to the 15-year follow-up (60.6% vs 77.8%, P = .001). CONCLUSIONS: Posttransplant diabetes mellitus is a major problem that endangers patient and graft survival. In our population, the incidence of posttransplant diabetes mellitus was 18.2%. Further studies are recommended to screen for patients with impaired fasting glucose and impaired glucose tolerance for prediction, early detection, and better management of posttransplant diabetes mellitus.
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