title: [Association of the Pro12Ala polymorphism in peroxisome proliferators activated receptor-gamma gene with rheumatoid arthritis in Sichuan Province of China].
abstract: OBJECTIVE
  To investigate the association of the Pro12Ala variant in peroxisome proliferators-activated receptor gamma (PPAR gamma) gene with rheumatoid arthritis.
  
  
  METHODS
  The genotypes of the Pro12Ala variant in the PPAR gamma gene were determined by polymerase chain reaction-restriction fragment length polymorphism in 421 unrelated subjects of the Han population in the Sichuan Province of China, including 207 subjects with rheumatoid arthritis and 214 subjects without the disease. The clinical data were also collected and analyzed.
  
  
  RESULTS
  The allele frequencies in the case and control groups were 98.79%, 95.79% for allele P and 1.21%, 4.21% for allele A; the genotype frequencies were 97.58% and 91.59% for PP, 2.42% and 8.41% for PA, and 0 for AA. The A allele frequency was much lower in the RA group than that in the control group.
  
  
  CONCLUSIONS
  The above data showed that the Pro12Ala variant of the PPAR gamma was associated with rheumatoid arthritis. The A allele might be a protective factor for RA. The Pro12Ala polymorphism in the PPAR gamma gene in Sichuan Han population is similar to that in other populations in China, but different from that in European and American populations.
authors.affiliation: Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 PR China.
authors.forename: Xiao-fu
authors.initials: XF
authors.lastname: Pan
authors.forename: Xing-bo
authors.initials: XB
authors.lastname: Song
authors.forename: Lan-lan
authors.initials: LL
authors.lastname: Wang
authors.forename: Li-xin
authors.initials: LX
authors.lastname: Li
authors.forename: Bin-wu
authors.initials: BW
authors.lastname: Ying
mesh_terms: D000328:Adult; D001172:Arthritis, Rheumatoid / Q000235:genetics*; D044466:Asian People / Q000235:genetics*; D016022:Case-Control Studies; D002681:China; D005006:Ethnicity / Q000235:genetics; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D047495:PPAR gamma / Q000235:genetics*; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D020641:Polymorphism, Single Nucleotide
chemical_list: D047495:PPAR gamma