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- W4220709879 abstract "<h2>Summary</h2><h3>Introduction</h3> Posterior urethral valve (PUV) is a congenital malformation characterized by a membranous structure located in the prostatic portion of the male posterior urethra that obstructs the urinary flow. Efforts have been made to determine the degree of impairment of fetal kidney function in this condition. <h3>Objective</h3> This study aimed to measure the levels of urinary biomarkers of glomerular and tubular functions in fetuses with PUV and to compare with the levels of the same molecules in healthy male premature newborns. <h3>Study design</h3> Urine samples from 43 fetuses with PUVs were collected and compared with urine samples from 40 healthy male newborns of the same gestational age (controls). Tubular and glomerular biomarkers levels were measured in urine samples by MILLIPLEX® assay kits. Levels of the molecules were related to creatinine (Cr) measurements at same urine samples and expressed as pg/mg Cr. Results were analysed with Graphpad Prism version 7.0 and SPSS version 20.0. <h3>Results</h3> Fetuses with PUV showed a significant reduction in urine levels of Epidermal Growth Factor (EGF), Calbindin, Osteoactivin, Molecule Renal Injury 1 (KIM-1 and Factor of trefoil 3 (TFF-3) when compared to controls. On the other hand, urine levels of cystatin C and renin were higher in PUV fetuses. The levels of molecules also differed according to urine osmolality and grade of hydronephrosis. <h3>Discussion</h3> Some urinary excreted molecules may indicate kidney damage in several segments along the nephron, while others may exert important functions. Mechanical and immunological mechanisms related to PUV might significantly modulate the synthesis of cytokines related to glomerular and tubular physiology, leading to alterations in urinary concentrations of those molecules. These biomarkers can be used as future diagnostic and prognostic markers in clinical practice. <h3>Conclusion</h3> Early kidney structural and functional impairment influenced the synthesis of glomerular and tubular molecules related to kidney physiological processes in fetuses with PUV.Summary FigureFlowchart showing the selection and outcome of PUV fetuses and summary of findings. Abbreviations: CKD = chronic kidney disease; ESKD = end-stage kidney disease; EGF = epidermal growth factor; pg/mg; Cr = picogram/milligram of creatinine; KIM-1 = Kidney Injury Molecule-1; PUV: posterior urethral valve; TFF-3 = factor oftrefoil 3; pg/mg Cr = picogram/milligram of creatinine.Summary Figure" @default.
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- W4220709879 date "2022-03-01" @default.
- W4220709879 modified "2023-10-16" @default.
- W4220709879 title "Tubular and glomerular biomarkers of renal tissue function in the urine of fetuses with posterior urethral valves" @default.
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- W4220709879 doi "https://doi.org/10.1016/j.jpurol.2022.03.019" @default.
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