01 January 2008
Renin-Angiotensin-Aldosterone system inhibitors and statins prolong graft survival in post-transplant glomerulonephritis
Joanna Pazik, Joanna Ostrowska, Zbigniew Lewandowski, Andrzej Mróz, Agnieszka Perkowska-Ptasińska, Teresa Baczkowska, Magdalena DurlikAnn Transplant 2008; 13(4): 41-45 :: ID: 880217
Abstract
Background: Novel immunosuppressives neither prevent nor attenuate
post-transplant glomerulonephritis, third common cause of late allograft loss. Data addressing influence of ACEI/ARA and statins on kidney transplants survival is contradictory. The aim of this study was to evaluate efficacy of therapeutic interventions undertaken in post-transplant glomerulonephritis.
Material/Methods: In 75 individuals with biopsy-confirmed post-transplant glomerulonephritis, engrafted in Warsaw Transplantation Institute, graft survival from index biopsy to permanent dialysis need, in regard to numerous therapeutic interventions was analysed. Evaluation of graft survival was performed using Kaplan-Meier estimator, log-rank and Wilcoxon tests. Relations between introduced treatment and time to graft loss was expressed with hazard ratio (HR), results regarded significant at p<0.05.
Results: Glomerulonephritis diagnosis was established 50.2±39.5 months after engraftment. Maintenance immunosuppression modifications included: methylprednisolone infusions (n=28), cyclofosfamide/ chlorambucil introduction (n=10), mycophenolate mofetil addition to maintenance treatment (n=23). Immunosuppression modifications did not result in graft survival prolongation. Statins (n=20) and renin-angiotensin-system blockers (n=49) substantially diminished the risk of graft loss (respectively: HR=0.37 (95% CI 0.15-0.88), p<0.02. and HR=0.39 (95% CI 0.16-0.98; p<0.05). The effect persisted after adjustment for presentation with nephrotic syndrome, graft dysfunction, mean arterial pressure, immunosuppression enhancement with mycophenoalte mofetil. Best result was obtained with combined RAASB and statin treatment (HR=0.24; 95% CI 0.69-0.09, p=0.008).
Conclusions: According to our data statins and renal renin-angiotensin system blockers prolong graft survival in patients with posttransplant glomerulonephritis. We feel that these relatively safe agents, bringing also other profits, should be routinely applied in patients with post transplant glomerulonephritis.
Keywords: Kidney Transplant, Glomerulonephritis, statins, angiotensin converting enzyme inhibitors
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