Abstract
Galectin-3 is a beta-galactoside-binding lectin which is involved in modulating inflammation and apoptosis. Elevated expression of galectin-3 has been demonstrated in synovium of rheumatoid arthritis (RA). The aim of our study is to investigate the genetic polymorphisms of galectin-3 in association with RA. Polymorphisms of galectin-3 gene (LGALS3) were compared between 151 RA patients and 182 healthy subjects in Taiwan. Variants at two LGALS3 single nucleotide polymorphism (SNP) sites (rs4644 and rs4652, corresponding to LAGLS3 +191 and +292) were genotyped by polymerase chain reaction (PCR) followed by restriction fragment length polymorphism (RFLP) and sequence-specific oligonucleotide probe hybridization, respectively. The allelic carriage of LGALS3 +292C was increased in patients with RA (66.9% in RA vs. 52.7% in controls, odds ratio=1.8, 95% confidence interval=1.2-2.8, p=0.009). These results implicate that the genetic polymorphisms in galectin-3 gene may contribute to development of RA.
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