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A Cross-Sectional Analysis of APOE Gene Polymorphism and the Risk of Cognitive Impairments in the Alzheimer's Disease Neuroimaging Initiative Study

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单位: [1]Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. [2]Office of Research and Scholarship, School of Nursing, University of Alabama at Birmingham, Birmingham, Alabama. [3]Physician Assistant Studies, School of Health Professions, University of Alabama at Birmingham, Birmingham, Alabama.
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It is inconclusive on how apolipoprotein epsilon (APOE) gene polymorphism is associated with the risk of having mild cognitive impairment (MCI) or Alzheimer's disease (AD).To investigate how APOE genotype is associated with the risk of MCI or AD using the data collected from the Alzheimer's Disease Neuroimaging Initiative (ADNI) participants.A cross-sectional design was used to analyze the baseline data collected from the 1,720 ADNI participants. APOE gene polymorphism was analyzed on how they are related to the risk of cognitive impairments of either MCI or AD using a percent yield (PY) method. Then cognitive functions were compared among six different APOE genotypes using a two-way ANCOVA by controlling possible confounding factors.The prevalence of six APOE genotypes in 1,720 participants is as following: e2/e2 (0.3%), e2/e3 (7.4%), e3/e3 (45.4%), e2/e4 (2%), e3/e4 (35%) and e4/e4 (9.9%). The e2/e2 and e4/e4 genotypes were associated with the lowest and the highest risk respectively for cognitive impairments of either MCI or AD. Further, a worse cognitive diagnosis was associated with an increasing number of APOE e4 allele in a dose dependent manner. Participants with genotype e3/e3 had a better memory measure than those with the genotype of e3/e4.APOE gene polymorphism is associated with different level of risks for cognitive impairments. The heterozygous genotype e3/e4 is associated with a worse memory function compared to the genotype of e3/e3. Further investigations are needed to intervene the cognitive deteriorations in those with at risk APOE genotypes.© 2021 - JARLIFE.

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第一作者单位: [1]Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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通讯机构: [3]Physician Assistant Studies, School of Health Professions, University of Alabama at Birmingham, Birmingham, Alabama. [*1]HPB 485, 1720 2nd Avenue South, Birmingham, AL 35294, USA
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