02 April 2015 : Original article
The Assessment of Renalase: Searching for the Best Predictor of Early Renal Dysfunction by Multivariate Modeling in Stable Renal Transplant RecipientsDijana StojanovicABCDEF, Tatjana CvetkovicACDFG, Miodrag StojanovicCD, Vladmila BojanicFG, Nikola StefanovicBDE, Ivana StojanovicBG
Ann Transplant 2015; 20:186-192
BACKGROUND: Renal transplant dysfunction has been shown to be an independent risk factor for cardiac, non-cardiovascular, and all-cause mortality in post-transplantation follow-up.
MATERIAL AND METHODS: We enrolled 73 renal transplant recipients who were more than 12 months post-renal transplant surgery, had stable graft function, and were on standard immunosuppression. The purpose of the study was to observe the relation between renal dysfunction and endothelial dysfunction parameters (nitrates, asymmetric and symmetric dimethylarginine, and endothelial nitric oxide synthase), and renalase, and to hypothesize the best predictor of early renal dysfunction by multivariate modeling. The other aim was to observe differences with regard to immunosuppression.
RESULTS: Non-adjusted odds ratio showed a significant risk of reduced glomerular filtration rate in transplant recipients with increased renalase concentration (p=0.026); age-adjusted odds ratio showed a significant risk of reduced glomerular filtration rate with increased renalase concentration (p=0.042), also after multivariable adjustment (p=0.032). Increased plasma endothelial nitric oxide synthase concentration was a protective factor for glomerular filtration rate (p=0.011). After adjustment for age (p=0.045), and after multivariate modeling, endothelial nitric oxide synthase was shown to be a protective factor for glomerular filtration rate (p=0.014). Significant differences in immunosuppression were found in plasma renalase in patients maintained on cyclosporine (p=0.027).
CONCLUSIONS: Renalase was shown to be strong predictor of decreased glomerular filtration rate and was significantly higher in the group of patients on cyclosporine. Endothelial nitric oxide synthase was identified as a strong protective factor for kidney function.
Keywords: Immunosuppressive Agents, Kidney Transplantation, Nitric Oxide Synthase Type III
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