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  • Title: IgA nephropathy in kidney allograft recipients-therapeutic perspective.
    Author: Pazik J, Baczkowska T, Lewandowski Z, Lewandowska D, Ostrowska J, Perkowska Ptasińska A, Mróz A, Miszewska-Szyszkowska D, Rowinski W, Durlik M.
    Journal: Transplant Proc; 2006; 38(1):112-4. PubMed ID: 16504678.
    Abstract:
    INTRODUCTION: A growing number of patients are losing their kidney allografts due to glomerulonephritis. Although posttransplant IgA nephropathy (IgAN) is regarded as benign, it may lead to late allograft loss in a substantial number of patients. The aim of this study was to evaluate the influence of posttransplant IgAN on long-term transplantation outcomes, risk factors for progression of graft dysfunction, and effectiveness of therapeutic interventions. PATIENTS AND METHODS: We evaluated, potential risk factors for accelerated graft loss among 27 kidney allograft recipients with posttransplant IgAN, comparing graft survival in a control group matched for population and transplantation-related parameters. We evaluated the effectiveness of therapeutic interventions regarding immunosuppressive regimen, and hypertension control including angiotensin converting enzyme inhibitor (ACEI) usage with Kaplan-Meier, Cox proportional hazard plots, and log-rank tests in statistical analyses. RESULTS: Compared with the control group, patients with IgAN experienced a 6.57 higher risk for dialysis dependence (P < .01, 95% CI 1.4 to 30.83). The risk for accelerated graft loss in the course of IgAN was associated with graft dysfunction (RR = 2.16 for additional 1 mg/dL of serum creatinine at glomerulonephritis presentation; P < .03, 95% CI 1.2 to 4.36) and intense proteinuria as evidenced by a RR = 4.67 for the presence of the nephrotic syndrome (P < .05, 95% CI 0.95 to 22.8). Immunosuppression enhancement resulted in a significantly decreased risk of dialysis dependence, namely, RR = 4.76 (95% CI 1.12 to 20, P < .04). With ACEI treatment there was a tendency for a 2.8-fold decreased risk of dialysis dependence, without reaching statistical significance (P = .14). CONCLUSIONS: Patients with posttransplant IgAN may benefit from intensifying maintenance immunosuppression, which slows progression to end-stage graft dysfunction.
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