title: A haplotype of the CYP4F2 gene is associated with cerebral infarction in Japanese men.
abstract: BACKGROUND
  CYP4F2, a member of the cytochrome P450 family, acts mainly as an enzyme and is involved not only in the metabolism of leukotriene B4, but also in that of arachidonic acid. It converts arachidonic acid to 20-hydroxyeicosatetraenoic acid (20-HETE), a metabolite involved in the regulation of the vascular tone in the brain. The aim of this study was to assess the association between the human CYP4F2 gene and cerebral infarction (CI), using a haplotype-based case-control study with separate analyses of data from the gender groups.
  
  
  METHODS
  A total of 175 CI patients and 246 control subjects were genotyped for five single-nucleotide polymorphisms (SNPs) of the human CYP4F2 gene (rs3093105, rs3093135, rs1558139, rs2108622, rs3093200). For data analysis, three separate groups were assessed: all subjects, men, and women.
  
  
  RESULTS
  In the male subjects, the G allele frequency for rs2108622 was significantly higher in CI patients as compared to control subjects (P = 0.025). The overall distribution of the haplotypes in the men was significantly different between the CI patients and the control subjects (P = 0.027). Additionally, the frequency of the T-C-G haplotype for men was significantly higher in the CI patients than in the control subjects (P = 0.008). Multiple logistic regression analysis also revealed the significance of the T-C-G haplotype in men, even after adjustment for confounding factors.
  
  
  CONCLUSIONS
  The results of this study indicate that, in Japanese men, CI is associated with the G allele of rs2108622 and, in addition, that the T-C-G haplotype appears to be a useful genetic marker for CI.
authors.affiliation: Division of Molecular Diagnostics, Department of Advanced Medical Science, Nihon University School of Medicine, Tokyo, Japan.
authors.forename: Zhenyan
authors.initials: Z
authors.lastname: Fu
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Nakayama
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Sato
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Izumi
authors.forename: Yuji
authors.initials: Y
authors.lastname: Kasamaki
authors.forename: Atsushi
authors.initials: A
authors.lastname: Shindo
authors.forename: Masakatsu
authors.initials: M
authors.lastname: Ohta
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Soma
authors.forename: Noriko
authors.initials: N
authors.lastname: Aoi
authors.forename: Mikano
authors.initials: M
authors.lastname: Sato
authors.forename: Koichi
authors.initials: K
authors.lastname: Matsumoto
authors.forename: Yukio
authors.initials: Y
authors.lastname: Ozawa
authors.forename: Yitong
authors.initials: Y
authors.lastname: Ma
mesh_terms: D000368:Aged; D000483:Alleles; D044466:Asian People / Q000235:genetics; D016022:Case-Control Studies; D002544:Cerebral Infarction / Q000208:ethnology* / Q000235:genetics*; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics*; D000072470:Cytochrome P450 Family 4; D020022:Genetic Predisposition to Disease / Q000235:genetics; D005838:Genotype; D006239:Haplotypes / Q000235:genetics*; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics; D012727:Sex Characteristics
chemical_list: D003577:Cytochrome P-450 Enzyme System; D000072470:Cytochrome P450 Family 4; C117480:CYP4F2 protein, human