title: [An association analysis of apolipoprotein E genotypes with Alzheimer's disease in Chinese population].
abstract: OBJECTIVE
  To analyse the association of apolipoprotein E genotypes with Alzheimer's disease in Chinese population.
  
  
  METHODS
  Using PCR and restriction enzyme digestion, we have analyzed ApoE allele frequency of Alzheimer's disease (AD) patients and healthy controls.
  
  
  RESULTS
  Among the 56 cases of AD, the frequency of ApoE epsilon 2, ApoE epsilon 3, ApoE epsilon 4 are 3 (2.7%), 84 (75.0%), 25 (22.3%) respectively, while in the 67 controls they are 9 (6.7%), 115 (85.8%), 10 (7.5%) respectively. The frequencies of the two groups have significant difference (P < 0.01) and the frequency of ApoE epsilon 4 allele is higher in AD than that in the health controls and the statistical treatment suggest that there is significant difference (chi 2 = 10.99, P < 0.01, OR = 3.59, 95% CI = 1.54-8.41). The frequency of the ApoE epsilon 3 is lower in AD than that in the health controls and the difference is also statistically significant(P < 0.05).
  
  
  CONCLUSIONS
  Our results are consistent with previous work in that proving the ApoE epsilon 4 allele is one of the risk factors of AD. The results also provide a support for the protection effect of ApoE epsilon 3 allele in developing AD.
authors.affiliation: National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, CAMS, PUMC, Beijing 100005, China.
authors.forename: Y N
authors.initials: YN
authors.lastname: Wu
authors.forename: J W
authors.initials: JW
authors.lastname: Zhang
authors.forename: Z X
authors.initials: ZX
authors.lastname: Zhang
authors.forename: Q M
authors.initials: QM
authors.lastname: Qu
authors.forename: D
authors.initials: D
authors.lastname: Chen
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000235:genetics*; D001057:Apolipoproteins E / Q000235:genetics*; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D016133:Polymerase Chain Reaction
chemical_list: D001057:Apolipoproteins E