title: The Fas gene A-670G polymorphism is not associated with sporadic Alzheimer disease in a Chinese Han population.
abstract: Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by excessive neuronal loss, intracellular neurofibrillary tangles and extracellular deposition of amyloid beta-peptide (Abeta). The Fas antigen is a cell surface receptor-mediating cell apoptosis. Several lines of evidence have made Fas/Fas ligand induced apoptosis play an important role in the pathogenesis of AD. Moreover, the Fas gene is located on chromosome 10q24.1, a region of linkage to late-onset AD. Several reports have investigated the association between a single nucleotide polymorphism (SNP) that is located at position -670 of Fas gene and AD, but yielded ambiguous results. To figure out the association of this SNP with sporadic AD in Chinese Han population, we have analyzed 509 patients with AD and 561 controls for the genetic association studies. Our results indicate that the distribution of the Fas genotypes (chi(2) = 0.66, P = 0.72) and alleles (chi(2) = 0.70, P = 0.40) did not differ significantly. The similar results were observed when AD and control groups were stratified by age/age at onset and sex (P > 0.10). The present data revealed no significant effect of the genotypes on the age of onset for developing AD, and no significant association between the genotypes and the severity of the disease.
authors.affiliation: Department of Neurology, Peking Union Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100730 Beijing, China.
authors.forename: Xiao-ming
authors.initials: XM
authors.lastname: He
authors.forename: Zhen-xin
authors.initials: ZX
authors.lastname: Zhang
authors.forename: Jun-wu
authors.initials: JW
authors.lastname: Zhang
authors.forename: Yong-tao
authors.initials: YT
authors.lastname: Zhou
authors.forename: Mou-ni
authors.initials: MN
authors.lastname: Tang
authors.forename: Cheng-bin
authors.initials: CB
authors.lastname: Wu
authors.forename: Zhen
authors.initials: Z
authors.lastname: Hong
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000235:genetics*; D000704:Analysis of Variance; D044466:Asian People / Q000235:genetics*; D016009:Chi-Square Distribution; D004252:DNA Mutational Analysis / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D018124:Receptors, Tumor Necrosis Factor / Q000235:genetics*; D019014:fas Receptor
chemical_list: C491901:FAS protein, human; D018124:Receptors, Tumor Necrosis Factor; D019014:fas Receptor