title: [Genetic association between the apolipoprotein E (ApoE) gene alleles and various forms of Alzheimer's disease].
abstract: Allele epsilon 4 of the apolipoprotein E (APOE) gene is associated with higher risk of Alzheimer's disease (AD) in many, though not all, ethnic groups. The APOE allele and genotype frequency distributions were studied in 207 AD patients without cerebrovascular disorders, 62 AD patients with cerebrovascular disorders (combined AD), and 206 control individuals (ethnic Russians from the Russian population). The frequency of allele epsilon 4 in patients with early-onset and late-onset AD was three times higher than in control individuals (p < 0.000001). Compared with control people, patients with cerebrovascular disorders displayed a twofold higher frequency of allele epsilon 4; the difference between the two groups was significant (p = 0.0019). Relative risk of AD in carriers of allele epsilon 4 was five times higher than in carriers of alleles epsilon 2 and epsilon 3 (p < 0.000001). Allele epsilon 2 had a protective effect with respect to AD onset until 65 years of age (p = 0.015). Thus, APOE allele epsilon 4 proved to be a universal factor of early-onset, late-onset, and combined AD in ethnic Russians from Russia.
authors: Mental Health Research Center, Russian Academy of Medical Sciences, Moscow, 113152 Russia.
authors: G I
authors: GI
authors: Korovaĭtseva
authors: T V
authors: TV
authors: Shcherbatykh
authors: N V
authors: NV
authors: Selezneva
authors: S I
authors: SI
authors: Gavrilova
authors: V E
authors: VE
authors: Golimbet
authors: N I
authors: NI
authors: Voskresenskaia
authors: E I
authors: EI
authors: Rogaev
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D000544:Alzheimer Disease / Q000453:epidemiology / Q000235:genetics* / Q000503:physiopathology; D001057:Apolipoproteins E / Q000235:genetics*; D006801:Humans; D008875:Middle Aged; D011110:Polymorphism, Genetic; D012307:Risk Factors; D012426:Russia / Q000453:epidemiology
chemical_list: D001057:Apolipoproteins E