title: Association between single nucleotide polymorphisms of the transient receptor potential vanilloid 1 (TRPV-1) gene and patients with irritable bowel syndrome in Korean populations.
abstract: OBJECTIVE
  Transient receptor potential vanilloid type 1 (TRPV1) plays a crucial role in pain perception and its expression is up-regulated in patients with irritable bowel syndrome (IBS). The aim of this study was to investigate the potential association between Single nucleotide polymorphism (SNPs) of the TRPV-1 gene and patients with IBS.
  
  
  METHODS
  We chose to focus on three SNPs in the human TRPV1 coding region (rs222749, rs9894618 and rs222747) in 80 healthy controls and 103 IBS patients. We developed the high resolution melting (HRM) method to determine the genotyping of rs222747 and rs9894618 and the genotyping of rs222749 was also determined by direct sequencing method.
  
  
  RESULTS
  The CG genotype of rs222747 was 58.8% in controls and 45.6% in the IBS group. The GG genotype of rs222747 was 15.0% in controls and 20.4% in the IBS group. The CT genotype of rs222749 was 313% in controls and 32.0% in the IBS group. The CC genotype of rs9894618 was 98.8% in controls and 100.0% in the IBS group. There was no significant difference in allele frequency of these three SNPs of the TRPV1 gene between controls and the IBS group. Also, no significant difference was observed between the IBS subtypes.
  
  
  CONCLUSIONS
  These results suggest that the SNPs of the TRPV1 gene may not be associated with IBS in Korean populations. Further studies with large cases are needed to validate the results of the present study.
authors.affiliation: Department of Internal Medicine, Chonnam National University Medical School, Gwangju, 501-757, Korea.
authors.forename: Young-A
authors.initials: YA
authors.lastname: Song
authors.forename: Seon-Young
authors.initials: SY
authors.lastname: Park
authors.forename: Young-Lan
authors.initials: YL
authors.lastname: Park
authors.forename: Cho-Yun
authors.initials: CY
authors.lastname: Chung
authors.forename: Gi-Hoon
authors.initials: GH
authors.lastname: Lee
authors.forename: Dae-Ho
authors.initials: DH
authors.lastname: Cho
authors.forename: Kang-Jin
authors.initials: KJ
authors.lastname: Park
authors.forename: Sung-Bum
authors.initials: SB
authors.lastname: Cho
authors.forename: Wan-Sik
authors.initials: WS
authors.lastname: Lee
authors.forename: Young-Eun
authors.initials: YE
authors.lastname: Joo
mesh_terms: D000328:Adult; D000368:Aged; D044466:Asian People / Q000235:genetics*; D005260:Female; D006801:Humans; D043183:Irritable Bowel Syndrome / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D056910:Republic of Korea; D050916:TRPV Cation Channels / Q000235:genetics*; D055815:Young Adult
chemical_list: D050916:TRPV Cation Channels; C494482:TRPV1 protein, human