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Pediatr Nephrol ; 35(1): 163-170, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31606750

RESUMO

BACKGROUND: The ideal management of ureteropelvic junction obstruction (UPJO) remains debatable. This prospective case-control study aimed to investigate if urinary levels of Neutrophil Gelatinase-Associated Lipocalin (NGAL) and serum levels of cystatin C could distinguish surgical from non-surgical cases of UPJO and if they could detect earlier impairment of renal function. METHODS: Biomarkers were measured in the following age-matched groups: (a) 22 infants with surgical UPJO, at initial diagnosis and 12 months postoperatively (groups A1 and A2, respectively); (b) 19 infants with non-surgical UPJO (group B); and (c) 17 controls (group C). Based on serum cystatin C levels, estimated glomerular filtration rate (eGFR) was calculated. RESULTS: Urinary NGAL (uNGAL) was significantly higher in group A1 vs. group A2 (p = 0.02) and in group A1 vs. group C (p = 0.03), whereas there was no statistically significant difference between groups A2 and C (p = 0.77). Likewise, cystatin C levels were significantly higher in group A1 vs. group A2 and in group A1 vs. group C (p = 0.004 and p = 0.02, respectively), but no statistically significant difference between groups A2 and C (p = 0.82). uNGAL and serum cystatin C did not differ between groups B and A, nor did they differ between groups B and C. Cystatin C levels and eGFR of group A1 were significantly higher than those of group A2 and group C (p = 0.0001 and p = 0.02, respectively). CONCLUSION: It seems that NGAL and cystatin C are able to distinguish patients who were treated surgically from healthy controls, and their levels appear to improve significantly following surgery.


Assuntos
Cistatina C/sangue , Hidronefrose/diagnóstico , Lipocalina-2/urina , Obstrução Ureteral/diagnóstico , Biomarcadores/sangue , Biomarcadores/urina , Estudos de Casos e Controles , Pré-Escolar , Feminino , Taxa de Filtração Glomerular/fisiologia , Humanos , Hidronefrose/sangue , Hidronefrose/cirurgia , Hidronefrose/urina , Lactente , Pelve Renal/diagnóstico por imagem , Pelve Renal/patologia , Pelve Renal/fisiopatologia , Masculino , Período Pós-Operatório , Período Pré-Operatório , Estudos Prospectivos , Índice de Gravidade de Doença , Resultado do Tratamento , Ultrassonografia , Ureter/patologia , Obstrução Ureteral/sangue , Obstrução Ureteral/cirurgia , Obstrução Ureteral/urina , Procedimentos Cirúrgicos Urológicos
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