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J Pediatr Urol. 2013 Oct;9(5):617-21. doi: 10.1016/j.jpurol.2012.06.003. Epub 2012 Jul 11.

Urinary nerve growth factor in children with overactive bladder: a promising, noninvasive and objective biomarker.

Author information

1
Department of Urology, Istanbul Faculty of Medicine, Istanbul University, 34093 Capa, Istanbul, Turkey. tayfuno@istanbul.edu.tr

Abstract

OBJECTIVE:

This prospective study was designed to determine urinary nerve growth factor (NGF) levels in children with overactive bladder (OAB), and to evaluate whether this factor can be used as a biomarker for diagnosis and monitoring treatment outcome.

PATIENTS AND METHODS:

Urinary NGF levels were determined in 40 children with OAB and in a control group of 20 children with no urinary symptoms. Urine samples were collected from the patients prior to and at 3 and 6 months after the beginning of treatment. The total NGF levels (pg/mL) were further normalized to the concentration of urinary creatinine (NGF/Cr level).

RESULTS:

Overall, both NGF and NGF/Cr levels were significantly higher at the beginning of the study. Mean NGF levels were 30.75 ± 8.35 and 9.75 ± 2.11 pg/ml (p = 0.023) and mean NGF/Cr levels were 0.53 ± 0.14 and 0.16 ± 0.04 (p = 0.022) in patients and controls, respectively. After 6 months of therapy, the NGF/Cr level was significantly reduced to almost control levels (0.16 ± 0.02, p = 0.047).

CONCLUSION:

NGF and NGF/Cr levels were significantly higher in children with OAB than controls at initial evaluation. Furthermore, the NGF/Cr level was significantly reduced following 6 months of therapy. NGF and NGF/Cr levels show promise as reliable biomarkers for OAB diagnosis and to monitor therapy in the pediatric age group.

KEYWORDS:

Biomarker; Overactive bladder; Urinary nerve growth factor

PMID:
22789557
DOI:
10.1016/j.jpurol.2012.06.003
[Indexed for MEDLINE]

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