Urinary neutrophil-gelatinase associated lipocalin is a more prognostic biomarker to distinguish antenatal hydronephrosis in neonates

MohammadJafari, Hamid and Rafiei, Alireza and Abedi, Mohammad and Aalaee, Abdolrasul and Mirabi, Araz Mohammad and Abedi, Ehs (2013) Urinary neutrophil-gelatinase associated lipocalin is a more prognostic biomarker to distinguish antenatal hydronephrosis in neonates. Research in Molecular Medicine, 1 (2). pp. 10-16.

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Official URL: http://rmm.mazums.ac.ir/article-1-50-en.html

Abstract

Background: Routine diagnostic methods of Vesicoureteral reflux (VUR) are invasive and can cause exposure to radiation and may increase risk of urinary tract infections. Therefore, introducing reliable, non invasive methods might be more interested in pediatric nephrology. The objective of this perspective case control study was to evaluate the prognostic value of urinary neutrophil-gelatinase associated lipocalin (uNGAL) on antenatal hydronephrosis (AH) with and without VUR. Materials and Methods: A total of 50 patients diagnosed with AH 78 males with mean age 5.71± 2.1 years, including 27 AH with VUR and 23 AH without VUR, and 19 normal healthy children 78.9 males with mean age 5.63 ± 1.89 years, were enrolled in this study. Urinary NGAL levels were measured by enzyme linked immunosorbent assay (ELISA). Results: There was a significant difference in uNGAL concentration between AH patients and controls (0.80 ± 0.26 and 0.29 ± 0.27 ng/ml, p<0.0001). However, the levels of uNGAL was not significantly deviated between AH patients with VUR compared to those without VUR (0.84 ± 0.34 vs. 0.75 ± 0.13, p=0.419). Standardization of NGAL based on urinary creatinine (uNGAL/uCr) showed a significantly difference between AH neonates with VUR compared to those without VUR (2.43±1.61 vs. 1.91±0.79, p<0.0001). Receiver operator characteristic (ROC) analysis revealed higher prognostic power of uNGAL for identifying AH with a sensitivity 95.7, and specificity 84.2. Meanwhile, the levels of uNGAL or NGAL/uCr ratio did not correlate with reflux grade or laterality. Conclusion: The urinary level of NGAL and NGAL/uCr ratio might be a surrogate non invasive, reliable tool to distinguish hydronephrosis.

Item Type: Article
Uncontrolled Keywords: NGAL, Antenatal hyronephrosis, Vesicoureteral reflux, Neonate, Creatinine, Urine
Depositing User: Unnamed user with email eprints@mazums.ac.ir
Date Deposited: 04 Jan 2018 14:19
Last Modified: 04 Jan 2018 14:19
URI: http://eprints.mazums.ac.ir/id/eprint/1568

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