Abstract
ObjectiveTo investigate a selection of renal injury biomarkers in fetal congenital lower urinary tract obstruction (LUTO) and their potential to identify renal damage in significant obstructive patterns, eventually to benefit fetal intervention and predict the outcome in terms of survival.Study DesignTen fetuses with congenital LUTO were submitted to fetal urine analysis that included six renal injury biomarkers: Neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule-1 (KIM-1), transforming growth factor beta-1 (TGF-β1), retinol-binding protein (RBP), cystatin C (uCyC), and microalbuminuria (µALB). The results were compared with urinary parameters of patients born with LUTO and healthy newborns.ResultThe majority of fetal biomarker levels showed significantly higher values when compared to all groups at birth with exception of KIM-1 and μALB. RBP and uCyC performed with 100% accuracy to identify severe renal damage in fetal LUTO.ConclusionUrine CyC, NGAL, RBP, and TGF-ß1 demonstrated high capability of identifying significant renal impairment due to severe LUTO and may contribute to currently used fetal medicine diagnostic parameters.
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