JOURNAL ARTICLE

Urinary neutrophil gelatinase-associated lipocalin and L-type fatty acid binding protein as diagnostic markers of early acute kidney injury after liver transplantation

Yi Li, Mingli Zhu, Qiang Xia, Siyue Wang, Jiaqi Qian, Renhua Lu, Miaolin Che, Huili Dai, Qingwei Wu, Zhaohui Ni, Bengt Lindholm, Jonas Axelsson, Yucheng Yan
Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals 2012, 17 (4): 336-42
22455661

OBJECTIVE: We examined the value of two potential novel urinary biomarkers, neutrophil gelatinase-associated lipocalin (NGAL) and L-type fatty acid binding protein (L-FABP), in diagnosing acute kidney injury (AKI) in liver transplant recipients.

METHODS: NGAL and L-FABP in urinary sample from Twenty-five patients before surgery and at 2, 4, 6, 12, 24, 48, 72 and 120 h after the anhepatic phase were tested. Standard statistics were used along with receiver-operating characteristic (ROC) analysis to evaluate the diagnostic value of selected markers.

RESULTS: Urinary NGAL was only slightly elevated at 2 h in the non-AKI group while rose and stayed high from 2-6 h in the AKI group. However, urinary L-FABP rose transiently in both groups 2-120 h following surgery. The level of urinary NGAL presented differences at 2-6 h (p < 0.05) and urinary L-FABP at 4 h (p < 0.05) between AKI and non-AKI groups. ROC analysis showed that area under the curves (AUCs) of NGAL were 0.766, 0.773, and 0.773 at 2, 4 and 6 h respectively while 0.760 of L-FABP at 4 h.

CONCLUSION: Urinary NGAL rather than L-FABP appeared to be a sensitive and specific marker of AKI in liver transplant recipients.

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