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- W2281458444 abstract "In recent years, the main end point of immunosuppressive therapy after liver transplantation has moved from the prevention of acute cellular rejection (ACR) toward the preservation of long-term graft function and prevention of immunosuppression-related side effects. This approach requires an optimal management of immunosuppressive therapy according to patient risk factors. However, the concentration of immunosuppressive drugs in the serum of patients, which is generally used as a surrogate for the level of immunosuppression, does not provide information about the magnitude of suppression of the immune system. Therefore a reliable marker for the development of ACR, or to predict patients who could tolerate reduced immunosuppression, would be crucial for improving post-transplant management of liver transplanted patients.The aims of the studies presented in this thesis were: 1) to assess the incidence of ACR after liver transplantation, to identify potential risk factors for ACR, and to evaluate the impact of ACR and its histological severity on outcomes; 2) to evaluate the role of liver function tests and blood eosinophil count as potential biomarkers for ACR after liver transplantation, with special attention on predictionof histologically proven moderate and severe ACR; 3) to evaluate the expression of specific immunological markers for ACR in patients before and after liver transplantation.The results of the studies showed that patient and graft survival at 1, 5 and 10 years after liver transplantation were not different with respect to presence or absence of ACR. Only untreated moderate/severe ACR was associated with increased death/graft loss using adjusted Cox regression analysis, whereas mild ACR, whether treated or not, had no effect. With regards to the evaluation of potential markers of ACR, despite peripheral eosinophilia was not sufficiently predictive of moderate/severe ACR, the delta in eosinophil count between the first and second biopsies was the only independent predictor of histological improvement, irrespective of whether bolus steroids were used. Lastly, we demonstrated that the increased expression of C28 and C38 on both CD4+ and CD8+ T cells and the increased levels of IL-17. These alterations of immune system could be used routinely in clinical practice to assess the immune status of liver transplanted patients and to properly manage immunosuppressive therapy" @default.
- W2281458444 created "2016-06-24" @default.
- W2281458444 creator A5044017759 @default.
- W2281458444 date "2013-01-24" @default.
- W2281458444 modified "2023-09-27" @default.
- W2281458444 title "Predicting acute cellular rejection after liver transplantation: form liver function test to immune monitoring" @default.
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- W2281458444 hasPublicationYear "2013" @default.
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