title: Arg16Gly β2-adrenergic receptor gene polymorphism in Japanese patients with aspirin-exacerbated respiratory disease.
abstract: BACKGROUND
  There has been no report that investigated β(2)-adrenergic receptor (ADRB2) gene polymorphism in patients with aspirin-exacerbated respiratory disease (AERD).
  
  
  METHODS
  DNA in the specimens in three groups of study subjects classified patients with AERD, patients with aspirin-tolerant asthma (ATA) and normal controls was extracted, and the target DNA sequence of the ADRB2 was amplified using a set of primers to generate an amplicon of 219 bp in length. Allelic discrimination assay for single nucleotide polymorphisms relating to the ADRB2 gene expression was carried out by using a previously described single nucleotide polymorphism detective system, sequence-specific thermal-elution chromatography.
  
  
  RESULTS
  The frequency of the Gly variant allele in patients with AERD was significantly lower than that in patients with ATA (p = 0.007), and the odds ratio (OR) of AERD to ATA associated with wild-type ArgArg homozygote was 3.300. Frequencies of wild-type ArgArg homozygote are significantly higher than those of variant-type ArgGly/GlyGly genotype in patients with AERD compared with those with ATA (p < 0.001, OR = 3.153). In patients with AERD, frequencies of wild-type ArgArg homozygote in both female and male patients are significantly higher than those of variant-type ArgGly/GlyGly genotype in male patients compared with those with ATA (p < 0.001, OR = 5.128 and p = 0.007, OR = 4.367, respectively). Also, in patients with AERD, frequencies of wild-type ArgArg homozygote in female patients are significantly higher than those of variant-type ArgGly/GlyGly genotype in female patients compared with those with ATA (p = 0.002, OR = 2.825).
  
  
  CONCLUSIONS
  We were the first to analyze Arg16Gly ADRB2 gene polymorphism in Japanese patients with AERD, and showed that Arg16Gly ADRB2 gene polymorphism in Japanese patients with AERD is different from that in the patients with ATA.
authors.affiliation: Gunma Institute for Allergy and Asthma, Gunma Hospital for Allergic and Respiratory Diseases, Gunma, Japan.
authors.forename: Kenya
authors.initials: K
authors.lastname: Kohyama
authors.forename: Shyuzo
authors.initials: S
authors.lastname: Abe
authors.forename: Kazumi
authors.initials: K
authors.lastname: Kodaira
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Yukawa
authors.forename: Soichiro
authors.initials: S
authors.lastname: Hozawa
authors.forename: Junichiro
authors.initials: J
authors.lastname: Morioka
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Inamura
authors.forename: Mayumi
authors.initials: M
authors.lastname: Ota
authors.forename: Hironori
authors.initials: H
authors.lastname: Sagara
authors.forename: Lawrence B
authors.initials: LB
authors.lastname: Schwartz
authors.forename: Motohiro
authors.initials: M
authors.lastname: Kurosawa
mesh_terms: D000328:Adult; D000368:Aged; D000483:Alleles; D019943:Amino Acid Substitution; D001120:Arginine / Q000235:genetics; D044466:Asian People / Q000235:genetics; D055963:Asthma, Aspirin-Induced / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D005998:Glycine / Q000235:genetics; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D018343:Receptors, Adrenergic, beta-2 / Q000235:genetics*
chemical_list: D018343:Receptors, Adrenergic, beta-2; D001120:Arginine; D005998:Glycine