Association of chemokine gene variants with end stage renal disease in North Indian population.

Abstract

BACKGROUND & AIM The progression rate of chronic kidney disease (CKD) to its end-stage renal disease (ESRD), and the development and severity of various complications, are indirectly influenced by genetic and epigenetic factors. Chemokines are small inducible pro-inflammatory cytokines, which are implicated in many biological processes like migration of leukocytes, angiogenesis, tumor growth and metastasis. We tested association of four single nucleotide polymorphisms (SNPs) viz. CCL2I/D, CCL2A2518G, CXCL12G801A and CXCR2(+1208)C/T among individuals with ESRD (end stage renal disease) and normal healthy controls from North Indian population. MATERIALS AND METHOD CCL2I/D, CCL2A2518G, CXCL12G801A and CXCR2(+1208)C/T were genotyped in blood samples of hospital-based case-control study comprising of 200 ESRD cases and 200 healthy controls using Restriction Fragment Length Polymorphism (RFLP) and ARMS (Amplification Refractory Mutation Specific) PCR methodology. RESULTS A significant association was found in CXCL12G801A with ESRD risk. In case of CXCL12G801A polymorphism heterozygous (GA) genotype showed significant risk (p=0.039; OR=1.55) whereas A allele carrier (GA+AA) also exhibited risk with ESRD (p=0.045, OR=1.59). In CXCR2(+1208)C/T polymorphism, the heterozygous genotype (CT) showed significant risk for ESRD (p=0.028; OR=1.65) and combination of CT+TT demonstrated significant high risk for ESRD (p=0.036; OR=1.52). In case of CCL2I/D, the variant genotype (D/D) showed reduced risk for ESRD patients. Upon analyzing the gene-gene interaction between CXCR2 and CXCL12, the combination (CT-GA) showed 2.65 fold risk for ESRD (p=0.018). CONCLUSION Our results indicated that polymorphism in CXCL12G801A and CXCR2(+1208)C/T showed high risk for ESRD in North Indian population. However, CCL2I/D showed reduced risk and CCL2A2518G exhibited no association. Study with large sample size and diverse ethnicity is required to validate these observations.

DOI: 10.1016/j.trim.2013.04.004

Cite this paper

@article{Singh2013AssociationOC, title={Association of chemokine gene variants with end stage renal disease in North Indian population.}, author={Vibha Singh and Praveen Kumar Jaiswal and Poonam Tiwari and Rakesh K Kapoor and Rama Devi Mittal}, journal={Transplant immunology}, year={2013}, volume={28 4}, pages={189-92} }