Academic Journal

How APOE4 Interacts with Biological Sex and Cognitive Differences to Shape Cognitive Decline in Alzheimer's Disease.

Bibliographic Details
Title: How APOE4 Interacts with Biological Sex and Cognitive Differences to Shape Cognitive Decline in Alzheimer's Disease.
Authors: Kucukay, Naz
Source: International Journal of High School Research; May2026, Vol. 8 Issue 9, p147-153, 7p
Subject Terms: Apolipoprotein E4, Gender differences (Psychology), Cognition disorders, Menopause, Estrogen, Hippocampus (Brain), Alzheimer's disease, Prefrontal cortex
Abstract: Alzheimer's disease (AD) is a neurodegenerative disorder that is the cause of around 70% of cases of dementia, affecting memory, thinking, and behavior. One of the most widely recognised genetic risk factors is the presence of the Apolipoprotein E epsilon 4 (APOE4) gene variant, which significantly impacts brain structure, cognitive decline, and inflammation within the brain. Growing literature proposes that sex differences - including different cognitive patterns, hormonal changes, and sex genes influence how the APOE4 gene affects the brain. This review explores how the APOE4 gene variant increases the risk of AD and how cognitive differences and biological sex influence this relationship. Previous studies have utilised functional Magnetic Resonance Imaging (fMRI) to focus on key brain regions and explore how APOE4 affects the hippocampus and prefrontal cortex, which are essential for memory and cognitive functions. Moreover, further research has considered how menopause and estrogen contribute to negative progression in women. This paper argues that sex based genetic and cognitive factors change how the APOE4 gene variant expresses itself in the brain, leading to differences in AD progression and symptoms. These findings can shape future research and guide upcoming clinical approaches and treatment strategies towards sex specific AD diagnosis. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of High School Research is the property of Terra Science & Education and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: How APOE4 Interacts with Biological Sex and Cognitive Differences to Shape Cognitive Decline in Alzheimer's Disease.
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  Data: International Journal of High School Research; May2026, Vol. 8 Issue 9, p147-153, 7p
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  Data: <searchLink fieldCode="DE" term="%22Apolipoprotein+E4%22">Apolipoprotein E4</searchLink><br /><searchLink fieldCode="DE" term="%22Gender+differences+%28Psychology%29%22">Gender differences (Psychology)</searchLink><br /><searchLink fieldCode="DE" term="%22Cognition+disorders%22">Cognition disorders</searchLink><br /><searchLink fieldCode="DE" term="%22Menopause%22">Menopause</searchLink><br /><searchLink fieldCode="DE" term="%22Estrogen%22">Estrogen</searchLink><br /><searchLink fieldCode="DE" term="%22Hippocampus+%28Brain%29%22">Hippocampus (Brain)</searchLink><br /><searchLink fieldCode="DE" term="%22Alzheimer's+disease%22">Alzheimer's disease</searchLink><br /><searchLink fieldCode="DE" term="%22Prefrontal+cortex%22">Prefrontal cortex</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Alzheimer's disease (AD) is a neurodegenerative disorder that is the cause of around 70% of cases of dementia, affecting memory, thinking, and behavior. One of the most widely recognised genetic risk factors is the presence of the Apolipoprotein E epsilon 4 (APOE4) gene variant, which significantly impacts brain structure, cognitive decline, and inflammation within the brain. Growing literature proposes that sex differences - including different cognitive patterns, hormonal changes, and sex genes influence how the APOE4 gene affects the brain. This review explores how the APOE4 gene variant increases the risk of AD and how cognitive differences and biological sex influence this relationship. Previous studies have utilised functional Magnetic Resonance Imaging (fMRI) to focus on key brain regions and explore how APOE4 affects the hippocampus and prefrontal cortex, which are essential for memory and cognitive functions. Moreover, further research has considered how menopause and estrogen contribute to negative progression in women. This paper argues that sex based genetic and cognitive factors change how the APOE4 gene variant expresses itself in the brain, leading to differences in AD progression and symptoms. These findings can shape future research and guide upcoming clinical approaches and treatment strategies towards sex specific AD diagnosis. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of High School Research is the property of Terra Science & Education and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.36838/IJHSR89.147
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 7
        StartPage: 147
    Subjects:
      – SubjectFull: Apolipoprotein E4
        Type: general
      – SubjectFull: Gender differences (Psychology)
        Type: general
      – SubjectFull: Cognition disorders
        Type: general
      – SubjectFull: Menopause
        Type: general
      – SubjectFull: Estrogen
        Type: general
      – SubjectFull: Hippocampus (Brain)
        Type: general
      – SubjectFull: Alzheimer's disease
        Type: general
      – SubjectFull: Prefrontal cortex
        Type: general
    Titles:
      – TitleFull: How APOE4 Interacts with Biological Sex and Cognitive Differences to Shape Cognitive Decline in Alzheimer's Disease.
        Type: main
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          Name:
            NameFull: Kucukay, Naz
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          Dates:
            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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            – Type: issn-print
              Value: 26421046
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              Value: 8
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              Value: 9
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            – TitleFull: International Journal of High School Research
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