title: Genetic variations in ADIPOQ gene are associated with chronic obstructive pulmonary disease.
abstract: BACKGROUND
  Adiponectin is reported to be related to the development of chronic obstructive pulmonary disease (COPD). Genetic variants in the gene encoding adiponectin (ADIPOQ) have been reported to be associated with adiponectin level in several genome-wide linkage and association studies. However, relatively little is known about the effects of ADIPOQ gene variants on COPD susceptibility. We determined the frequencies of single-nucleotide polymorphisms (SNPs) in ADIPOQ in a Chinese Han population and their possible association with COPD susceptibility.
  
  
  METHODS
  We conducted a case-control study of 279 COPD patients and 367 age- and gender-distribution-matched control subjects. Seven tagging SNPs in ADIPOQ, including rs710445, rs16861205, rs822396, rs7627128, rs1501299, rs3821799 and rs1063537 were genotyped by SNaPshot. Association analysis of genotypes/alleles and haplotypes constructed from these loci with COPD was conducted under different genetic models.
  
  
  RESULTS
  The alleles or genotypes of rs1501299 distributed significantly differently in COPD patients and controls (allele: P = 0.002, OR = 1.43 and 95%CI = 1.14-1.79; genotype: P = 0.008). The allele A at rs1501299 was potentially associated with an increased risk of COPD in all dominant model analysis (P = 0.009; OR: 1.54; 95%CI: 1.11-2.13), recessive model analyses (P = 0.015; OR: 1.75; 95% CI: 1.11-2.75) and additive model analyses (P = 0.003; OR: 2.11; 95% CI: 1.29-3.47). In haplotype analysis, we observed haplotypes AAAAACT and GGACCTC had protective effects, while haplotypes AGAACTC, AGGCCTC, GGAACTC, GGACACT and GGGCCTC were significantly associated with the increased risk of COPD.
  
  
  CONCLUSIONS
  We conducted the first investigation of the association between the SNPs in ADIPOQ and COPD risk. Our current findings suggest that ADIPOQ may be a potential risk gene for COPD. Further studies in larger groups are warranted to confirm our results.
authors.affiliation: Department of Geriatrics, West China Hospital, Sichuan University, Chengdu, China.
authors.forename: Yiming
authors.initials: Y
authors.lastname: Yuan
authors.forename: Haiou
authors.initials: H
authors.lastname: Jiang
authors.forename: Jiangying
authors.initials: J
authors.lastname: Kuang
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Hou
authors.forename: Yulin
authors.initials: Y
authors.lastname: Feng
authors.forename: Zhiguang
authors.initials: Z
authors.lastname: Su
mesh_terms: D052242:Adiponectin / Q000235:genetics*; D000368:Aged; D016022:Case-Control Studies; D005260:Female; D020022:Genetic Predisposition to Disease / Q000235:genetics; D005838:Genotype; D006239:Haplotypes / Q000235:genetics; D006801:Humans; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics; D029424:Pulmonary Disease, Chronic Obstructive / Q000235:genetics*
chemical_list: D052242:Adiponectin