title: [Relationship between gene polymorphism and haplotype of SLC6A2 promoter and blood-stasis pattern in patients with essential hypertension].
abstract: OBJECTIVE
  To explore the relationship between the genetic variants of the norepinephrine transporter gene solute carrier family 6 member 2 (SLC6A2) and blood stasis pattern (BSP) in patients with essential hypertension (EH).
  
  
  METHODS
  DNA was extracted from the peripheral blood of 830 EH patients (532 were typed as BSP and 298 as non-BSS) and 512 persons with normal blood pressure (for control), to detect the polymorphisms of SLC6A2 promoter-3 and 2 by PCR-RFLP, and estimate the haplotype frequency adopting SHEsis program.
  
  
  RESULTS
  Chi2 partition showed that frequency of promoter-2-GG genotype in EH patients of BSP was lower than that in the EH patients of non-BSP and the normal control (P = 0.001); while that of promoter-3-GG/GA in the EH patients with severe BSP was the highest (P < 0.001). Logistic regression analysis showed that after the miscellaneous factors being rectified, with the reference category of EH-non-BSP, the relative odds ratio (OR) of promoter-2-GC/CC genotype for EH-BSP was 1.535 (95% CI: 1.094-2.155, P = 0.013); that of promoter-3-AG/GG genotype for EH with severe BSP was 1.925 (95% CI: 1.199-3.091, P = 0.007); while OR of G-C haplotype (promoter-3-promoter-2) for EH-BSP was 2.127 (95% CI: 1.202-3.765, P = 0.010), showing the strongest intensity.
  
  
  CONCLUSIONS
  SLC6A2 promoter-3-GA/GG genotype may be a susceptibility gene for patients of EH with severe BSP; promoter-2-GC/CC and G-C haplotype might be the susceptible factors to EH-BSP.
authors.affiliation: Department of Cardiology, Fujian Provincial Hospital, Fuzhou. docluo0421@yahoo.com.cn
authors.forename: Jie-Wei
authors.initials: JW
authors.lastname: Luo
authors.forename: Hui
authors.initials: H
authors.lastname: Chen
authors.forename: Xiao-Ying
authors.initials: XY
authors.lastname: Wu
mesh_terms: D000368:Aged; D016022:Case-Control Studies; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D006973:Hypertension / Q000175:diagnosis* / Q000235:genetics*; D008297:Male; D008516:Medicine, Chinese Traditional; D008875:Middle Aged; D050484:Norepinephrine Plasma Membrane Transport Proteins / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide; D011401:Promoter Regions, Genetic
chemical_list: D050484:Norepinephrine Plasma Membrane Transport Proteins; C493227:SLC6A2 protein, human