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Related Experiment Videos

Predicting memory decline in normal elderly: genetics, MRI, and cognitive reserve.

Larry A Tupler1, K Ranga R Krishnan, Daniel L Greenberg

  • 1Department of Psychiatry and Behavioral Sciences, Box 3018, Duke University Medical Center, Durham, NC 27710, USA. ltupler@duke.edu

Neurobiology of Aging
|August 19, 2006
PubMed
Summary

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The apolipoprotein E (APOE)-epsilon4 gene variant predicts long-term memory decline in healthy older adults. Hippocampal volume measured by MRI also contributes to predicting memory changes over time.

Area of Science:

  • Neuroscience
  • Genetics
  • Gerontology

Background:

  • Alzheimer's disease (AD) prediction involves apolipoprotein E (APOE)-epsilon4, hippocampal atrophy, and memory deficits.
  • Early identification of at-risk individuals is crucial for potential interventions.

Purpose of the Study:

  • To investigate the predictive value of APOE genotype and hippocampal volume for longitudinal memory decline in healthy elderly individuals.

Main Methods:

  • 159 healthy elderly subjects underwent MRI and California Verbal Learning Test (CVLT).
  • 84 subjects completed a 5-year follow-up assessment.
  • Statistical analyses included regression models to identify predictors of memory performance.

Main Results:

Related Experiment Videos

  • APOE-epsilon4 allele was associated with poorer long-delay free recall performance at follow-up compared to APOE-epsilon3/3.
  • Baseline memory recall, APOE-epsilon4 allele presence, and left hippocampal volume predicted follow-up recall.
  • Cerebral volume and age influenced baseline hippocampal volume, but not APOE isoform directly.

    • Conclusions:

    • APOE-epsilon4 genotype is a significant predictor of longitudinal memory decline in cognitively healthy older adults.
    • Hippocampal morphometry via MRI provides additional predictive value for memory decline.