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Serum neutrophil gelatinase-associated lipocalin (NGAL) and interleukin-18 (IL-18) as predictive biomarkers for delayed graft function after kidney transplantation

Other Titles
 신이식 후 지연성 신기능 예측 표지자로서의 혈청 neutrophil gelatinase-associated lipocalin (NGAL)과 interleukin-18 (IL-18) 
Issue Date
Dept. of Medicine/석사
Early biomarkers for acute kidney injury after kidney transplantation has been studied because delayed graft function (DGF) is associated with increased risk of acute rejection and graft loss. We investigated the usefulness of serum neutrophil gelatinase-associated lipocalin (NGAL) and Interleukin-18 (IL-18) for the prediction of DGF after kidney transplantation. Fifty-nine kidney transplant recipients were included and they were separated into DGF and immediate graft function (IGF) groups. Serum samples were serially collected on the preoperative day as well as days 1, 5, and 14 after transplantation. NGAL and IL-18 were measured using enzyme-linked immunosorbent assays. After transplantation, serum levels of NGAL were significantly higher at any time in patients with DGF compared to those with IGF. Serum concentrations of IL-18 were not different between both groups. The ROC-AUC values of NGAL, IL-18, and creatinine on day 1 for the discrimination of DGF from IGF were 0.86, 0.63, and 0.65. On POD1, the sensitivities of NGAL and creatinine were respectively 78.6%, and 50.0% at 77.8% specificity, and the AUC values for any combinations including NGAL and that for NGAL alone were higher than that of creatinine. Serum NGAL is an early,2sensitive marker of graft dysfunction in kidney transplantation, while serum IL-18 showed limited predictive values. Therefore, adding serum NGAL for follow-up laboratory tests not only would facilitate early diagnosis of DGF but also could aid prompt decision making.
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1. College of Medicine (의과대학) > Others (기타) > 2. Thesis
Yonsei Authors
Lee, Eun Young(이은영)
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