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Related Experiment Videos

Urinary nephrocalcin excretion in children with urolithiasis.

A Noyan1, H Yaşar, A K Bayazit

  • 1Department of Pediatric Nephrology, Cukurova University, School of Medicine, Adana Hospital, Adana, Turkey. naytul@mail.cu.edu.tr

Nephron. Physiology
|September 16, 2003
PubMed
Summary

Nephrocalcin (NC) levels, specifically the NC-PreA/Cr ratio, are elevated in children with urolithiasis. This finding suggests nephrocalcin may be a significant factor in childhood urinary stone disease development.

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Area of Science:

  • Pediatric Nephrology
  • Urology
  • Biochemistry

Background:

  • Childhood urolithiasis (urinary stones) is a growing concern with complex etiologies.
  • Nephrocalcin (NC), a protein found in renal tissue, has been implicated in stone formation.
  • Understanding the specific forms of nephrocalcin involved is crucial for diagnosis and treatment.

Purpose of the Study:

  • To investigate the role of different nephrocalcin (NC) forms in pediatric urolithiasis.
  • To compare urinary NC excretion profiles between children with and without urinary stones.
  • To identify potential biomarkers for childhood urinary stone disease.

Main Methods:

  • Biochemical analysis of serum and timed urine samples from 41 pediatric urolithiasis patients and 25 healthy controls.

Related Experiment Videos

  • Measurement of serum and urine creatinine (Cr).
  • Quantification of urinary nephrocalcin (NC) excretion, expressed as NC/Cr ratios (NC-A/Cr, NC-B/Cr, NC-C/Cr, NC-PreA/Cr, NC-D/Cr).

    • Main Results:

    • Urinary NC-PreA/Cr and NC-D/Cr ratios were significantly higher in patients with urinary stones compared to controls.
    • No significant differences were observed in NC-A/Cr, NC-B/Cr, or NC-C/Cr ratios between the groups.
    • The elevated NC-PreA/Cr ratio in stone-forming patients suggests its potential role in urinary stone disease.

    Conclusions:

    • Specific forms of nephrocalcin, particularly NC-PreA and NC-D, are associated with childhood urolithiasis.
    • The NC-PreA/Cr ratio may serve as an important indicator or stimulatory factor in the development of urinary stones in children.
    • Further research into nephrocalcin's role could lead to improved diagnostic and therapeutic strategies for pediatric urolithiasis.