Q Zhang1, Y-F Liu1, Z-X Su2, L-P Shi1, Y-H Chen1. 1. Department of Urinary Surgery, the First Affiliated Hospital of Jinan University Guangzhou, Guangdong, China. 2. Department of Urinary Surgery, the First Affiliated Hospital of Jinan University Guangzhou, Guangdong, China. Electronic address: suz2008@126.com.
Abstract
OBJECTIVE: The aims of this study were to determine if characterization of serum concentrations of interferon-gamma inducible protein-10 (IP-10), fractalkine, and their receptors (CXCR3 and CX3CR1) were predictive of acute allograft rejection in kidney transplant recipients. METHODS: Kidney transplant recipients (n = 52) were enrolled in this study and divide into either the acute rejection (AR, n = 15) or non-acute rejection (NAR, n = 35) groups. Serum samples from recipients were collected 1 day prior to transplantation and on days 1, 3, 5, 7, and 9 post-transplantation. The accuracy of chemokine concentrations for predicting acute rejection episodes was evaluated using receiver operator characteristic (ROC) curves. RESULTS: AR was diagnosed in 15 patients based on histologic changes to renal biopsies. AR patients had significantly higher serum fractalkine, CXCR1, IP-10, and CXCR3 levels compared to levels observed in the NAR group and healthy controls. Fractalkine and IP-10 had the largest area under the ROC curve at 0.86 (95% confidence interval: 0.77-0.96). Following steroid therapy, chemokine levels decreased, which may serve to predict the therapeutic response to steroid therapy. CONCLUSION: Measuring serum levels of fractalkine, IP-10, and their receptors (especially the fractalkine/IP-10 combination) may serve as a noninvasive approach for the early diagnosis of renal allograft rejection.
OBJECTIVE: The aims of this study were to determine if characterization of serum concentrations of interferon-gamma inducible protein-10 (IP-10), fractalkine, and their receptors (CXCR3 and CX3CR1) were predictive of acute allograft rejection in kidney transplant recipients. METHODS: Kidney transplant recipients (n = 52) were enrolled in this study and divide into either the acute rejection (AR, n = 15) or non-acute rejection (NAR, n = 35) groups. Serum samples from recipients were collected 1 day prior to transplantation and on days 1, 3, 5, 7, and 9 post-transplantation. The accuracy of chemokine concentrations for predicting acute rejection episodes was evaluated using receiver operator characteristic (ROC) curves. RESULTS: AR was diagnosed in 15 patients based on histologic changes to renal biopsies. AR patients had significantly higher serum fractalkine, CXCR1, IP-10, and CXCR3 levels compared to levels observed in the NAR group and healthy controls. Fractalkine and IP-10 had the largest area under the ROC curve at 0.86 (95% confidence interval: 0.77-0.96). Following steroid therapy, chemokine levels decreased, which may serve to predict the therapeutic response to steroid therapy. CONCLUSION: Measuring serum levels of fractalkine, IP-10, and their receptors (especially the fractalkine/IP-10 combination) may serve as a noninvasive approach for the early diagnosis of renal allograft rejection.
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