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Pediatric Nephrology
Published in: Pediatric Nephrology 10/2014

01-10-2014 | Original Article

Association of miR-146a rs2910164 with childhood IgA nephropathy

Authors: Junhong Lin, Yao Huang, Xuelin Zhang, Junbin Chen, Haihui Sheng

Published in: Pediatric Nephrology | Issue 10/2014

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Abstract

Background

Micro-RNAs (miRNAs) play important roles in the regulation of immune response and inflammation. The purpose of this study was to investigate the association between three single nucleotide polymorphisms (SNPs) (mir-146a rs2910164, let-7a-2 rs1143770, miR-196a2 rs11614913) and susceptibility to and severity of childhood immunoglobulin A (IgA) nephropathy (IgAN).

Methods

We genotyped three miRNA SNPs in two independent Han Chinese populations composed of 158 patients and 265 controls (discovery set), and 246 patients and 446 controls (validation set), respectively.

Results

We found that rs2910164 was significantly associated with IgAN in the discovery but not the validation set. Combined analysis revealed that rs2910164 CC and CG genotypes were associated with increased risk of IgAN compared with the GG genotype [adjusted odds ratios (OR) = 1.684, 95 % confidence interval (CI)1.190–2.384, P = 0.003; adjusted OR = 1.472, 95 % CI 1.079–2.007, P = 0.015, respectively). We also found that the frequency of the rs2910164 CC genotype was significantly higher in patients with Haas grade III–V than in those with Haas grade I–II for all study populations (P < 0.05). The expression of miR-146a in normal renal tissues with CC genotype was lower than in those with a G allele (P = 0.038).

Conclusions

These results indicated that rs2910164 may affect the susceptibility and severity of pediatric IgAN. Further studies are needed to validate these findings.
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Metadata
Title
Association of miR-146a rs2910164 with childhood IgA nephropathy
Authors
Junhong Lin
Yao Huang
Xuelin Zhang
Junbin Chen
Haihui Sheng
Publication date
01-10-2014
Publisher
Springer Berlin Heidelberg
Published in
Pediatric Nephrology / Issue 10/2014
Print ISSN: 0931-041X
Electronic ISSN: 1432-198X
DOI
https://doi.org/10.1007/s00467-014-2818-3

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