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Increased serum and urinary microRNAs in children with idiopathic nephrotic syndrome

Yang Luo1, Cheng Wang, Xi Chen

  • 1Department of Clinical Laboratory, Jinling Hospital, School of Life Sciences, Nanjing University, Nanjing, China.

Clinical Chemistry
|January 25, 2013
PubMed
Abstract

Insights

Five specific serum microRNAs (miRNAs) and urinary miR-30a-5p show increased levels in children with nephrotic syndrome (NS). These biomarkers may aid in diagnosing and assessing pediatric NS.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Pediatric Nephrology

Background:

  • MicroRNAs (miRNAs) in body fluids show potential as disease biomarkers.
  • Idiopathic childhood nephrotic syndrome (NS) diagnosis can be challenging.
  • Identifying reliable biomarkers for pediatric NS is crucial for timely intervention.

Purpose of the Study:

  • To investigate the clinical utility of serum and urine miRNAs as biomarkers for idiopathic childhood nephrotic syndrome (NS).
  • To identify specific miRNA profiles associated with NS in pediatric patients.
  • To assess the potential of these miRNAs for disease diagnosis and monitoring.

Main Methods:

  • Serum samples analyzed from 159 NS children, 109 healthy controls, and 44 with other kidney diseases.
  • miRNA expression profiling using TaqMan Low Density Array and quantitative reverse-transcription PCR.
  • Paired serum and urine samples collected pre- and post-treatment for condition assessment.

Main Results:

  • Five serum miRNAs (miR-30a-5p, miR-151-3p, miR-150, miR-191, miR-19b) and urinary miR-30a-5p were significantly elevated in NS children.
  • Combined serum miRNAs demonstrated high diagnostic accuracy (AUC 0.90).
  • Concentrations of these miRNAs decreased with clinical improvement, indicating prognostic value.

Conclusions:

  • Elevated serum and urinary miRNAs (miR-30a-5p, miR-151-3p, miR-150, miR-191, miR-19b) are associated with pediatric NS.
  • These miRNAs show promise as non-invasive diagnostic and prognostic biomarkers for idiopathic childhood NS.
  • Further validation could lead to improved clinical management of pediatric NS.

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