Disease Markers

Disease Markers / 2013 / Article

Open Access

Volume 34 |Article ID 623196 | https://doi.org/10.3233/DMA-130980

Agata Korzeniecka-Kozerska, Anna Wasilewska, Edyta Tenderenda, Agnieszka Sulik, Kamil Cybulski, "Urinary MMP-9/NGAL Ratio as a Potential Marker of FSGS in Nephrotic Children", Disease Markers, vol. 34, Article ID 623196, 6 pages, 2013. https://doi.org/10.3233/DMA-130980

Urinary MMP-9/NGAL Ratio as a Potential Marker of FSGS in Nephrotic Children

Received22 Feb 2013
Accepted22 Feb 2013

Abstract

BACKGROUND: The study was undertaken to develop a potential new markers for distinguishing minimal change nephrotic syndrome (MCNS) and focal segmental glomerulosclerosis (FSGS) in children. We hypothesized that matrix metalloproteinase-9/neutrophil gelatinase-associated lipocalin (MMP-9/NGAL) is a better marker of focal sclerosis in the glomerulus then matrix metalloproteinase-9/tissue inhibitor of metalloproteinase-1 (MMP-9/TIMP-1) and matrix metalloproteinase-2/tissue inhibitor of metalloproteinase-2 MMP2/TIMP-2.METHODS: The present study used a sample of 36 children and adolescents subdivided into two groups: I – 20 children with MCNS, subjected to examination twice: A – in relapse of nephrotic syndrome, before treatment and B – after regression of proteinuria; II – 16 children with FSGS. MMPs and TIMPs and NGAL levels were measured in the urine using ELISA kit. MMP-9/TIMP-1, MMP-2/TIMP-2 and MMP-9/NGAL ratios were calculated.RESULTS: Median NGAL/cr. was significantly higher in MCNS and FSGS patients when compared to healthy controls. Both, NGAL and MMP-9 urinary levels were significantly elevated in FSGS subjects, as compared with control subjects. Contrary to FSGS children, in MCNS group, before treatment only NGAL/cr., but not MMP-9/cr. was increased. Urinary concentrations of NGAL and MMP-9 were highly associated with each other (NGAL/cr. vs. MMP-9/cr., r = 0.485, p < 0.01). Median urine MMP-9/NGAL ratio in FSGS patients was significantly higher than in patients with MCNS. We also found that significant increase in MMP-9/NGAL was associated with FSGS [odds ratio (OR) – 9.0; confidence interval (CI) 1.97–41.07].CONCLUSION: MMP-9/NGAL ratio may serve as differentiation marker between MCNS and FSGS in nephrotic children.

Copyright © 2013 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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