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1.
Int. braz. j. urol ; 43(3): 549-555, May.-June 2017. tab, graf
Article in English | LILACS | ID: biblio-840845

ABSTRACT

ABSTRACT Purpose The aim of this study was to investigate the urinary concentration of epidermal growth factor (EGF) and monocyte chemotactic protein-1 (MCP-1) as reflux nephropathy (RN) biomarkers before and after endoscopic treatment of moderate to severe vesico-ureteral reflux (VUR). Materials and methods A prospective study was carried out on 72 children with moderate to severe VUR. All patients underwent endoscopic treatment using Macroplastique® or Deflux®. Vesico-ureteral reflux resolution was tested by post-operative voiding cystourethrography after 3 months and 2 years. Follow-up urinary samples were collected at that time. Control samples were taken from healthy children with no clinical evidence of renal and bladder disease and no history of UTI. Results In VUR patients, pre-operative urinary EGF levels had a down-regulation when compared to controls. Following successful VUR repair, urinary EGF levels of VUR children progressively increased only at long term follow-up but without returning to normal levels. Urinary MCP-1 levels were highly expressed in pre-operative samples and decreased markedly during early post-operative measurements. Urinary MCP-1 levels did not further decreased in late post-operative follow-up. In fact, these levels remained significantly higher when compared to controls. Conclusions Urinary levels of EGF and MCP-1 may become useful markers for monitoring the response to surgical treatment in VUR patients. Although endoscopic VUR treatment is effective in reducing the inflammatory response, the persistence of significant abnormal levels of inflammatory cytokines (such as urinary MCP-1) at long term follow-up suggests that surgery alone may not completely treat the chronic renal inflammation evidenced in these children.


Subject(s)
Humans , Male , Female , Infant , Child, Preschool , Child , Urinary Tract Infections/diagnosis , Vesico-Ureteral Reflux/urine , Chemokine CCL2/urine , Epidermal Growth Factor/urine , Urinary Tract Infections/etiology , Vesico-Ureteral Reflux/surgery , Vesico-Ureteral Reflux/complications , Biomarkers/urine , Case-Control Studies , Prospective Studies
2.
GEN ; 47(1): 16-21, ene.-mar. 1993.
Article in Spanish | LILACS | ID: lil-137231

ABSTRACT

Se determinaron los valores urinarios del Factor de Crecimiento Epidérmico (FCE) absolutos y corregidos por la excreción de creatinina en 23 ulcerosos duodenales y se compararon con un grupo control. En los pacientes se dosificaron valores basales de Pepsinógeno I sérico. Los valores absolutos de FCE urinario de los ulcerosos fueron más bajos que los controles, pero tal diferencia ni la de FCE corregido por la excreción urinaria de creatinina fueron estadísticamente significativas (p > 0,05). La excreción absoluta de FCE de los ulcerosos varones fue mayor que en las damas (p<0,05), pero al establecer la relación FCE/Creatinina, la diferencia desapareció. No hubo correlación entre FCE y Pepsinógeno I, fue inversa con la edad y positiva con la excreción de creatinina. Varios mecanismos se plantean para explicar la normalidad urinaria del FCE en estos pacientes. La importancia creciente que se da al FCE en enfermedad ulcerosa y ulteriores investigaciones, son analizadas


Subject(s)
Adult , Humans , Male , Female , Epidermal Growth Factor/physiology , Epidermal Growth Factor/urine , Pepsinogen A/physiology , Pepsinogen A/urine , Duodenal Ulcer/physiopathology , Duodenal Ulcer/urine
3.
s.l; s.n; nov. 1989. 105 p. ilus, tab.
Thesis in Spanish | LILACS | ID: lil-121801

ABSTRACT

Se desarrolló un radioinmunoensayo homólogo, con anticuerpos policlonales, utilizando un antígeno altamente purificado, obtenido por DNA recombinante. El método permite cantidades del factor de crecimiento epidérmico tan bajas como 20 picogramos/tubo; es altamente específico y confiable. El presente estudio aporta a la literatura la primera evidencia científica de la existencia de niveles inmunoreactivos medibles del Factor de Crecimiento Epidérmico en la primera orina de un grupo de recién nacidos a término. En el líquido amniótico se demuestra que existen niveles medibles de hEGF al igual que lo han demostrado otros autores en dos trabajos anteriores. Estos niveles son relativamente bajos en comparación con los urinarios


Subject(s)
Infant, Newborn , Humans , Male , Female , Epidermal Growth Factor/analysis , Epidermal Growth Factor/urine , Amniotic Fluid/analysis , Perinatology , Radioimmunoassay
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