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Gender Differences in Elderly With Subjective Cognitive Decline.

Lijun Wang1,2,3, Ting Tian4,

  • 1Institutes of Brain Science, Fudan University, Shanghai, China.

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|June 20, 2018
PubMed
Summary
This summary is machine-generated.

Gender influences cognitive performance and brain changes in individuals with subjective cognitive decline (SCD). Males show lower amyloid but worse cognitive scores, while females exhibit reduced brain volumes. These gender differences are crucial for interpreting SCD evaluations.

Keywords:
cognitive functionentorhinal cortexgenderhippocampusmedial temporal lobesignificant memory concern

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Area of Science:

  • Neuroscience
  • Gerontology
  • Alzheimer's Disease Research

Background:

  • Subjective cognitive decline (SCD), or significant memory concern (SMC), may indicate early Alzheimer's Disease (AD) preceding mild cognitive impairment (MCI).
  • Understanding gender-based differences in cognitive function and neuropathology is vital for early AD detection and management.

Purpose of the Study:

  • To investigate the impact of gender on cognitive performance, amyloid accumulation, and brain structure in patients with SMC.
  • To explore gender-specific patterns in biomarkers associated with Alzheimer's Disease.

Main Methods:

  • Analysis of 29 males and 40 females with SMC from the Alzheimer's Disease Neuroimaging Initiative (ADNI) cohort.
  • Assessment of cognitive tests, [18F] AV45 amyloid PET imaging, and volumetric MRI of the hippocampus, entorhinal cortex, fusiform gyrus, and medial temporal lobe.
  • Measurement of cerebrospinal fluid (CSF) biomarkers including Aβ42, Tau, and P-tau.

Main Results:

  • Males with SMC demonstrated poorer performance on the ADAS-13 and lower amyloid deposition compared to females.
  • Females with SMC showed better performance on the RAVLT-5 and had reduced volumes in the hippocampus, entorhinal cortex, fusiform, and medial temporal lobe.
  • No significant gender differences were observed in CSF Aβ42, Tau, or P-tau levels.

Conclusions:

  • Gender-specific considerations are essential when interpreting cognitive assessments in individuals experiencing SMC.
  • The study highlights distinct patterns of cognitive performance and neuroimaging findings between males and females with subjective memory concerns, suggesting a need for gender-adjusted diagnostic approaches in early AD detection.