title: [Relationship among the XhaI and EcoRI locus polymorphisms of apolipoprotein B gene, serum lipid metabolism and gallstone disease].
abstract: OBJECTIVE
  To explore the relationship between the XbaI and EcoRI locus polymorphisms of apolipoprotein B gene and gallstone disease.
  
  
  METHODS
  Restriction fragment length polymorphism-polymerase chain reaction (RFLP-PCR) technique was used to analyze the genotype of the ApoB gene in 106 patients and 105 controls, according to the design of case control study.
  
  
  RESULTS
  The frequencies of X+X- and X-X- of XbaI locus polymorphism were significantly different between the patients and controls and the frequency of X+ allele in the patients was significantly higher than that in the controls (0.104 vs 0.052). Meanwhile, the levels of LDLc and ApoB in the patients were significantly higher than those in the controls among the group of X+X- genotype. The frequencies of E+E- and E+E+ of EcoRI locus polymorphism were significantly different between the patients and controls and the frequency of E-allele in the patients was significantly higher than that the in controls, and the level of LDLc with E+E- genotype was higher than that with E+E+ genotype among the patients.
  
  
  CONCLUSIONS
  ApoB gene X+ allele of XbaI locus and E-allele of EcoRI locus may be the susceptible genes for gallstone disease, and variation of X+ and E-alleles may affect serum lipid metabolism and formation of gallstone.
authors.affiliation: Yixing People's Hospital, Jiangsu Province, Yixing 214200, China.
authors.forename: Yong-fei
authors.initials: YF
authors.lastname: Tan
authors.forename: Song
authors.initials: S
authors.lastname: Yang
authors.forename: Rong-bin
authors.initials: RB
authors.lastname: Yu
authors.forename: Chong
authors.initials: C
authors.lastname: Shen
authors.forename: Wei-liang
authors.initials: WL
authors.lastname: Ding
authors.forename: Wei-min
authors.initials: WM
authors.lastname: Zhou
authors.forename: Wei-da
authors.initials: WD
authors.lastname: Gong
authors.forename: Cai-liang
authors.initials: CL
authors.lastname: Yao
mesh_terms: D000328:Adult; D000368:Aged; D001055:Apolipoproteins B / Q000235:genetics*; D015246:Deoxyribonuclease EcoRI / Q000378:metabolism*; D015252:Deoxyribonucleases, Type II Site-Specific / Q000378:metabolism*; D005260:Female; D042882:Gallstones / Q000235:genetics*; D006801:Humans; D008055:Lipids / Q000097:blood*; D008297:Male; D008875:Middle Aged; D012150:Polymorphism, Restriction Fragment Length
chemical_list: D001055:Apolipoproteins B; D008055:Lipids; D015246:Deoxyribonuclease EcoRI; C025580:endodeoxyribonuclease XBAI; D015252:Deoxyribonucleases, Type II Site-Specific