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Dose-dependent association of apolipoprotein E allele epsilon 4 with late-onset, sporadic Alzheimer's disease. 1994

T Yoshizawa, and K Yamakawa-Kobayashi, and Y Komatsuzaki, and T Arinami, and E Oguni, and H Mizusawa, and S Shoji, and H Hamaguchi
Department of Neurology, University of Tsukuba, Japan.

We examined the apolipoprotein E (apo E) genotypes in 47 patients with late-onset sporadic Alzheimer's disease (mean age at onset +/- standard deviation, 72.2 +/- 6.4 years), 8 with late-onset familial Alzheimer's disease (75.5 +/- 5.1 years), 18 with early-onset sporadic Alzheimer's disease (52.8 +/- 4.7 years), and 10 with early-onset familial Alzheimer's disease (52.0 +/- 6.8 years) in Japan and compared them with genotypes in control subjects. In late-onset sporadic Alzheimer's disease, apo E-epsilon 4 frequency increased significantly (epsilon 4 frequency: 0.34 vs 0.095 in controls, p < 0.0001), and the odds ratio, which represents the strength of association between Alzheimer's disease and apo E-epsilon 4, markedly increased with increasing dose of apo E-epsilon 4 gene (3 [95% confidence interval, 2-6] in one dose; 43 [95% confidence interval, 12-154] in two doses). This study also suggested that apo E-epsilon 4 is associated with both late-onset (epsilon 4: 0.31) and early-onset familial Alzheimer's disease (epsilon 4: 0.35). In contrast, we found no association between apo E-epsilon 4 and early-onset sporadic Alzheimer's disease (epsilon 4: 0.08). These results indicate that the risk of developing late-onset sporadic Alzheimer's disease is markedly dependent on the dose of apo E-epsilon 4, while apo E-epsilon 4 does not appear to be a major risk factor for early-onset sporadic Alzheimer's disease.

UI MeSH Term Description Entries
D007564 Japan A country in eastern Asia, island chain between the North Pacific Ocean and the Sea of Japan, east of the Korean Peninsula. The capital is Tokyo. Bonin Islands
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D005260 Female Females
D005787 Gene Frequency The proportion of one particular in the total of all ALLELES for one genetic locus in a breeding POPULATION. Allele Frequency,Genetic Equilibrium,Equilibrium, Genetic,Allele Frequencies,Frequencies, Allele,Frequencies, Gene,Frequency, Allele,Frequency, Gene,Gene Frequencies
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000483 Alleles Variant forms of the same gene, occupying the same locus on homologous CHROMOSOMES, and governing the variants in production of the same gene product. Allelomorphs,Allele,Allelomorph
D000544 Alzheimer Disease A degenerative disease of the BRAIN characterized by the insidious onset of DEMENTIA. Impairment of MEMORY, judgment, attention span, and problem solving skills are followed by severe APRAXIAS and a global loss of cognitive abilities. The condition primarily occurs after age 60, and is marked pathologically by severe cortical atrophy and the triad of SENILE PLAQUES; NEUROFIBRILLARY TANGLES; and NEUROPIL THREADS. (From Adams et al., Principles of Neurology, 6th ed, pp1049-57) Acute Confusional Senile Dementia,Alzheimer's Diseases,Dementia, Alzheimer Type,Dementia, Senile,Presenile Alzheimer Dementia,Senile Dementia, Alzheimer Type,Alzheimer Dementia,Alzheimer Disease, Early Onset,Alzheimer Disease, Late Onset,Alzheimer Sclerosis,Alzheimer Syndrome,Alzheimer Type Senile Dementia,Alzheimer's Disease,Alzheimer's Disease, Focal Onset,Alzheimer-Type Dementia (ATD),Dementia, Presenile,Dementia, Primary Senile Degenerative,Early Onset Alzheimer Disease,Familial Alzheimer Disease (FAD),Focal Onset Alzheimer's Disease,Late Onset Alzheimer Disease,Primary Senile Degenerative Dementia,Senile Dementia, Acute Confusional,Alzheimer Dementias,Alzheimer Disease, Familial (FAD),Alzheimer Diseases,Alzheimer Type Dementia,Alzheimer Type Dementia (ATD),Alzheimers Diseases,Dementia, Alzheimer,Dementia, Alzheimer-Type (ATD),Familial Alzheimer Diseases (FAD),Presenile Dementia,Sclerosis, Alzheimer,Senile Dementia
D001057 Apolipoproteins E A class of protein components which can be found in several lipoproteins including HIGH-DENSITY LIPOPROTEINS; VERY-LOW-DENSITY LIPOPROTEINS; and CHYLOMICRONS. Synthesized in most organs, Apo E is important in the global transport of lipids and cholesterol throughout the body. Apo E is also a ligand for LDL receptors (RECEPTORS, LDL) that mediates the binding, internalization, and catabolism of lipoprotein particles in cells. There are several allelic isoforms (such as E2, E3, and E4). Deficiency or defects in Apo E are causes of HYPERLIPOPROTEINEMIA TYPE III. Apo-E,Apo E,Apo E Isoproteins,ApoE,Apolipoprotein E Isoproteins,Apoprotein (E),Apoproteins E,Isoproteins, Apo E,Isoproteins, Apolipoprotein E

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