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Prognostic factors and biomarkers of congenital obstructive nephropathy

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Abstract

Congenital obstructive nephropathy (CON) is the leading cause of chronic kidney disease (CKD) in children. Anomalies of the urinary tract are often associated with abnormal nephrogenesis, which is compounded by obstructive injury and by maternal risk factors associated with low birth weight. Currently available fetal and postnatal imaging and analytes of amniotic fluid, urine, or blood lack predictive value. For ureteropelvic junction obstruction, biomarkers are needed for optimal timing of pyeloplasty; for posterior urethral valves, biomarkers of long-term prognosis and CKD are needed. The initial nephron number may be a major determinant of progression of CKD, and most patients with CON who progress to renal failure reach this point in adulthood, presumably compounded by episodes of acute kidney injury. Biomarkers of tubular injury may be of particular value in predicting the need for surgical intervention or in tracking progression of CKD, and must be adjusted for patient age. Discovery of new biomarkers may depend on “unbiased” proteomics, whereby patterns of urinary peptide fragments from patients with CON are analyzed in comparison to controls. Most promising are the analysis of urinary exosomes (restricting biomarkers to relevant tubular cells) and quantitative magnetic resonance imaging techniques allowing precise determination of nephron number and tubular mass. The greatest need is for large prospective multicenter studies with centralized biomarker sample repositories to follow patients with CON from fetal life through adulthood.

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  1. Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA, USA

    Robert L. Chevalier

  2. Department of Pediatrics, University of Virginia Children’s Hospital, P.O. Box 800386, Charlottesville, VA, 22908, USA

    Robert L. Chevalier

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Chevalier, R.L. Prognostic factors and biomarkers of congenital obstructive nephropathy. Pediatr Nephrol 31, 1411–1420 (2016). https://doi.org/10.1007/s00467-015-3291-3

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