APOE polymorphism affects episodic memory among non demented elderly subjects

Simona De Blasi, Alberto Montesanto, Cinzia Martino, Serena Dato, Francesco De Rango, Amalia C. Bruni, Vincenzo Mari, Emidio Feraco, Giuseppe Passarino

Research output: Contribution to journalArticlepeer-review

Abstract

The APOE ε4 allele has been associated with a number of neurodegenerative disorders e.g. Alzheimer's disease. Inconsistent results have been obtained for cognitive decline in 'normal' aging. We investigated whether specific aspects of cognitive decline were associated with APOE ε4 among 620 'healthy' elderly subjects living in Calabria, southern Italy. MMSE scores ranged from 11 to 30. A lower MMSE score was unrelated to APOE polymorphism, i.e. a global measure of cognition. However, poorer episodic memory was associated with APOE ε4, both registration (p = 0.01) and recall (p = 0.01). Temporal and spatial orientation, attention and calculation, language, and constructive function were not affected. We conclude that episodic memory, specifically, is adversely affected by APOE ε4 and urge evaluation of precise phenotypes in genetic association studies of cognitive decline in order to avoid inconsistent results due to phenotypic heterogeneity.

Original languageEnglish
Pages (from-to)224-227
Number of pages4
JournalExperimental Gerontology
Volume44
Issue number3
DOIs
Publication statusPublished - Mar 2009

Keywords

  • Aging
  • APOE
  • Cognitive abilities
  • Cognitive decline
  • Episodic memory
  • MMSE

ASJC Scopus subject areas

  • Ageing
  • Biochemistry
  • Cell Biology
  • Endocrinology
  • Genetics
  • Molecular Biology
  • Medicine(all)

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