Research Papers:
Genetic variants of MCP-1 and CCR2 genes and IgA nephropathy risk
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Abstract
Jie Gao1,*, Xinghan Liu2,*, Linting Wei1,*, Dan Niu3, Jiali Wei4, Li Wang1, Heng Ge1, Meng Wang2, Qiaoling Yu5, Tianbo Jin6, Tian Tian2, Zhijun Dai2, Rongguo Fu1
1Department of Nephrology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710004, China
2Department of Oncology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710004, China
3Department of Nephrology, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
4Department of Nephrology, Hainan general hospital, Haikou 570311, China
5Department of Pathology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710004, China
6National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest University, Xi’an 710069, China
*These authors have contributed equally to this work
Correspondence to:
Jie Gao, email: [email protected]
Rongguo Fu, email: [email protected]
Keywords: monocyte chemoattractant protein-1, IgA nephropathy, polymorphism, risk, case-control study
Received: September 16, 2016 Accepted: October 12, 2016 Published: October 24, 2016
ABSTRACT
Monocyte chemoattractant protein-1 (MCP-1) and its receptor CCR2 stimulate inflammation response by activating and recruiting monocytes/macrophages. MCP-1 and CCR2 polymorphisms were reported to be associated with various diseases. To explore the relationship between MCP-1 and CCR2 polymorphisms and IgA nephropathy (IgAN), we conducted this case-control study by enrolling 351 IgAN patients and 310 health controls. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to evaluate potential associations of MCP-1 and CCR2 polymorphisms with susceptibility and clinical parameters of IgAN. No statistical differences between IgAN group and the control group in the MCP-1 -2518 and CCR2 +190 genotypic groups were observed (P > 0.05). Individuals with MCP-1 -2518 GG genotypes had a higher blood pressure (GG vs. AA+AG: OR = 1.79, 95% CI = 1.07-2.99, P = 0.026) and Lee’s grade (GG vs. AA+AG: OR = 2.05, 95% CI = 1.19-3.54, P = 0.009; GG vs. AA: OR = 2.24, 95% CI = 1.19-4.20, P = 0.01), compared with patients with AA/AG genotypes. A significant association between CCR2 +190 polymorphism and Lee’s grades was observed (GA+AA vs. GG: OR = 2.66, 95% CI = 1.63-4.35, P < 0.001; GA vs. AA+GG: OR = 2.27, 95% CI = 1.39-3.70, P = 0.001). Our results indicated that MCP-1 and CCR2 polymorphisms may influence the progression of IgAN, but not increase/decrease its susceptibility.
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