First-year profile of biomarkers for early detection of renal injury in infants with congenital urinary tract obstruction

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Citações na Scopus
9
Tipo de produção
article
Data de publicação
2019
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ISSN da Revista
Título do Volume
Editora
SPRINGER
Citação
PEDIATRIC NEPHROLOGY, v.34, n.6, p.1117-1128, 2019
Projetos de Pesquisa
Unidades Organizacionais
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Resumo
Background Diagnosis of renal function impairment and deterioration in congenital urinary tract obstruction (UTO) continues to be extremely challenging. Use of renal biomarkers in this setting may favor early renal injury detection, allowing for a reliable choice of optimal therapeutic options and prevention or minimization of definitive renal damage. Methods This longitudinal, prospective study analyzed the first-year profile of two serum renal biomarkers: creatinine (sCr) and cystatin C (sCyC); and six urinary renal biomarkers: neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule-1 (KIM-1), transforming growth factor beta-1 (TGF-beta 1), retinol-binding protein (RBP), cystatin C (mu CyC), and microalbuminuria (ALB) in a cohort of 37 infants with UTO divided into three subgroups: 14/37 with unilateral hydro(uretero)nephrosis, 13/37 with bilateral hydro(uretero)nephrosis, and 10/37 patients with lower urinary tract obstruction (LUTO), compared with 24 healthy infants matched by gestational age and birth weight. Results All urine biomarkers showed significantly higher values at the first month of life (p <= 0.009), while NGAL (p = 0.005), TGF-beta 1 (p<0.001), and mu ALB (p<0.001) were high since birth compared to controls. Best single biomarker performances were RBP in bilateral hydronephrosis and LUTO subgroups and KIM-1 in unilateral hydronephrosis subgroup. Best biomarker combination results for all subgroups were obtained by matching RBP with TGF-beta 1 or KIM-1 and NGAL with CyC ([AUC] <= 0.934; sensitivity <= 92.4%; specificity <= 92.8%). Conclusions RBP, NGAL, KIM-1, TGF-beta 1, and CyC, alone and especially in combination, are relatively efficient in identifying surgically amenable congenital UTO and could be of practical use in indicating on-time surgery.
Palavras-chave
Congenital urinary tract obstruction, Hydronephrosis, Renal biomarkers, Infants
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