Scientific article
Open access

Neutrophil gelatinase-associated lipocalin distribution in preterm newborns without acute kidney injury as defined by a reference method

Published inJournal of maternal-fetal and neonatal medicine, vol. 35, no. 25, p. 4956-4960
Publication date2022-12
First online date2021-01-17

Introduction: Neutrophil gelatinase-associated lipocalin (NGAL) has been proposed as an early acute kidney injury (AKI) biomarker in the neonatal population. Our goal is to describe this biomarker behavior in this high-risk population, in absence of AKI as confirmed by inulin clearance.

Materials and methods: Prospective study including 42 preterm newborns (mean gestational age: 30.7 ± 2.3 weeks) with a urinary NGAL collection between day 1 and 6 of life.

Results: Median urinary neutrophil gelatinase-associated lipocalin (uNGAL) value is 122.8 ng/ml (7-1981.5 ng/ml). Statistically significant higher uNGAL values are found in female. uNGAL median values are decreasing when comparing extremely, very, and late preterm groups (812.2 ng/ml [75.8-1453.9] vs. 124.4 ng/ml [31.4-1981.5] vs. 65.3 ng/ml [7.1-1091]). There is a statistically significant inverse correlation between gestational age and uNGAL values (Pearson's coefficientr= -0.37). uNGAL median values are higher in groups exposed to gentamicin, neonatal asphyxia, early onset sepsis, or patent ductus arteriosus. Median inulin clearance is 18.8 ml/min/1.73 m2[14.8-25.5 ml/min/1.73 m2]. There is no correlation between uNGAL values and inulin clearance results (Pearson's coefficientr=-0. 29,p: .06).

Conclusions: In this preterm newborn's series without AKI, the median uNGAL and its high variability are in accordance with published reference ranges. Correlation between uNGAL and gestational age exists, as well as gender impact. Newborns exposed to different renal insults present higher uNGAL values, suggesting potential undetected tubular toxicity or reflecting NGAL production in case of inflammatory or ischemic processes.

  • Infant
  • Acute kidney injury
  • Inulin clearance
  • Neutrophil gelatinase-associated lipocalin
  • Premature
  • Acute Kidney Injury / diagnosis
  • Biomarkers
  • Female
  • Humans
  • Infant, Newborn
  • Infant, Premature
  • Inulin
  • Lipocalin-2
  • Prospective Studies
Citation (ISO format)
DE MUL, Aurélie, PARVEX, Paloma Maria, WILHELM-BALS, Alexandra Marina. Neutrophil gelatinase-associated lipocalin distribution in preterm newborns without acute kidney injury as defined by a reference method. In: Journal of maternal-fetal and neonatal medicine, 2022, vol. 35, n° 25, p. 4956–4960. doi: 10.1080/14767058.2021.1873939
Main files (1)
Article (Published version)
ISSN of the journal1476-4954

Technical informations

Creation10/03/2022 6:59:13 AM
First validation05/22/2023 4:49:00 PM
Update time05/22/2023 4:49:00 PM
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