title: Promoter polymorphisms of the TIM-4 gene are correlated with disease activity in patients with systemic lupus erythematosus.
abstract: Although the TIM gene family plays important roles in immune responses, little is known about TIM regulation in the development of systemic lupus erythematosus (SLE). This study aimed to investigate the association of two TIM-4 single nucleotide polymorphisms (SNPs) rs6874202 (-1419G>A) and rs62382402 (-1609G>A) with SLE susceptibility in a Chinese Han population. The results showed no significant differences between patients with SLE and control group for rs6874202 and rs62382402 (p = .72, .53 respectively). However, the anti-dsDNA levels in serum from SLE patients with GG genotype of TIM-4 gene at -1419 site were significantly higher than those with GA and AA genotype (p = .0335), and C3 levels of SLE patients with GG and GA genotype were much lower than those with AA genotypes (p = .0187). Moreover, the apoptotic cell levels of SLE patients with AA and GG genotypes were significantly higher than those with GA genotypes in patients with SLE (p = .0393). In addition, the C3 concentration of SLE patients with the GG genotype of TIM-4 gene at -1609 site was found to be significantly higher than those with the GA genotype (p = .0129). The results imply that GG genotype of the TIM-4 gene at -1419 site might be associated with the disease activity of SLE.
authors.affiliation: Department of Immunology, Shandong University School of Medicine, Jinan, China.|Internal Medicine department ward 19, Fuding Hospital, Fuding, China.
authors.forename: B
authors.initials: B
authors.lastname: Liu
authors.affiliation: Department of Immunology, Shandong University School of Medicine, Jinan, China.
authors.forename: W
authors.initials: W
authors.lastname: Liu
authors.affiliation: Department of Immunology, Shandong University School of Medicine, Jinan, China.
authors.forename: R
authors.initials: R
authors.lastname: Wang
authors.affiliation: Department of Rheumatism, Qilu Hospital Affiliated to Shandong University, Jinan, China.
authors.forename: Q
authors.initials: Q
authors.lastname: Shu
authors.affiliation: Department of Quality Control, Jinan Blood Centre of Shandong Province, Jinan, China.
authors.forename: X
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Medical Research and Laboratory Diagnostic Center, Jinan Central Hospital affiliated to Shandong University, Jinan, China.
authors.forename: X
authors.initials: X
authors.lastname: Fan
authors.affiliation: Department of Immunology, Shandong University School of Medicine, Jinan, China.
authors.forename: Q
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Department of Immunology, Shandong University School of Medicine, Jinan, China.
authors.forename: X
authors.initials: X
authors.lastname: Liang
authors.affiliation: Department of Immunology, Shandong University School of Medicine, Jinan, China.
authors.forename: C
authors.initials: C
authors.lastname: Ma
authors.affiliation: Department of Immunology, Shandong University School of Medicine, Jinan, China.
authors.forename: L
authors.initials: L
authors.lastname: Gao
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D056726:Genetic Association Studies; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000235:genetics* / Q000503:physiopathology; D008297:Male; D008565:Membrane Proteins / Q000235:genetics*; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D011401:Promoter Regions, Genetic
chemical_list: D008565:Membrane Proteins; C512411:TIMD4 protein, human
keywords: SNPs; T-cell immunoglobulin and mucin domain-containing protein 4; systemic lupus erythematosus