Abstract
Background
We evaluated urinary endothelin (ET)-1-like Immunoreactivity (uET-1 L) excretion in Wilms tumor (WT) survivors and investigated its relationships with glomerular filtration rate (GFR) and effective renal plasma flow (ERPF). Glomerular hemodynamics were also assessed by Gomez formulae.
Methods
Seventeen WT survivors underwent renal sequential scintigraphy for residual kidney function determination including ERPF and GFR. Forty-five healthy individuals were selected as the control group. uET-1 L was measured by radioimmunoassay from the 24-h urine collection.
Results
In WT survivors, uET-1 L excretion was significantly higher than in controls. Significant correlations were found between uET-1 L and ERPF and GFR. Cluster analysis, applied on uET-1 L, identified two different patient groups. Between them, GFR and ERPF were significantly different. No significant difference existed between the two clusters for age and sex, elapsed time from nephrectomy, treatment, or nephrectomy side. Applying Gomez formulae, significant difference was found for afferent and total renal resistance.
Conclusions
According to our results, uET-1 L seems to be a marker of glomerular injury in patients with renal mass loss revealing renal overload condition. The uET-1 L role in renal damage progression and hemodynamic glomerular worsening in nephrectomized patients should be proven by prospective long-term follow-up studies, even for potential ET-1 receptor antagonist therapeutic use.
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Imperiale, A., Olianti, C., Bernini, G. et al. Urinary endothelin-1-like immunoreactivity excretion in Wilms’ tumor survivors. Pediatr Nephrol 27, 1351–1359 (2012). https://doi.org/10.1007/s00467-012-2145-5
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DOI: https://doi.org/10.1007/s00467-012-2145-5