Open AccessAssociation of TLR4 Gene rs2149356 Polymorphism with Primary Gouty Arthritis in a Case-Control Study
Author(s) -
Yufeng Qing,
Jingguo Zhou,
Quan-Bo Zhang,
Dongsheng Wang,
Min Li,
Qidong Yang,
Cuiping Huang,
Ling Yin,
Shu-Yue Pan,
Wei Xie,
Meng-Yun Zhang,
Mengjun Pu,
Mei Zeng
Publication year - 2013
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0064845
Subject(s) - snp , tlr4 , genotype , inflammation , medicine , immunology , peripheral blood mononuclear cell , allele , single nucleotide polymorphism , polymorphism (computer science) , arthritis , endocrinology , biology , gene , genetics , in vitro
Background The t oll-like receptor (TLR)4-interleukin1β (IL1β) signaling pathway is involved in the monosodium urate (MSU)-mediated inflammation. The aim of this present study was to determine whether the TLR4 gene rs2149356 SNP is associated with gouty arthritis (GA) susceptibility and whether rs2149356 SNP impacts the TLR4-IL1β signaling pathway molecules expression. Methods and Findings The rs2149356 SNP was detected in 459 GA patients and 669 control subjects (containing 459 healthy and 210 hyperuricemic subjects). Peripheral blood mononuclear cells (PBMCs) TLR4 mRNA and serum IL1β were measured in different genotype carriers, and correlations between TLR4 gene SNP and TLR4 mRNA, IL1β were investigated. The frequencies of the genotype and allele were significantly different between the GA and control groups ( P <0.01, respectively). The TT genotype was associated with a significantly increased risk of GA (OR = 1.88); this finding was not influenced by making adjustments for the components of possible confounders (adjusted OR = 1.96). TLR4 mRNA and IL1β were significantly increased in the TT genotype from acute GA patients ( P <0.05, respectively), and lipids were significantly different among three genotypes in the GA patients ( P <0.05, respectively). Conclusions The TLR4 gene rs2149356 SNP might be associated with GA susceptibility, and might participate in regulating immune, inflammation and lipid metabolism. Further studies are required to confirm these findings.