Associations between neighborhood built environment and cognition vary by apolipoprotein E genotype: Multi-Ethnic Study of Atherosclerosis

Health Place. 2019 Nov:60:102188. doi: 10.1016/j.healthplace.2019.102188. Epub 2019 Nov 29.

Abstract

We examined whether neighborhood built environment (BE) and cognition associations in older adults vary by apolipoprotein E (APOE) genotype, a genetic risk factor for Alzheimer's disease (AD). We conducted a cross-sectional analysis of 4091 participants. Neighborhood characteristics included social and walking destination density (SDD, WDD), intersection density, and proportion of land dedicated to retail. Individuals were categorized as APOE ε2 (lower AD risk), APOE ε4 (higher AD risk), or APOE ε3 carriers. Among APOE ε2 carriers, greater proportion of land dedicated to retail was associated with better global cognition, and greater SDD, WDD, intersection density, and proportion of land dedicated to retail was associated with better processing speed. These associations were not observed in APOE ε3 or ε4 carriers. APOE ε2 carriers may be more susceptible to the potentially beneficial effects of denser neighborhood BEs on cognition; however, longitudinal studies are needed.

Keywords: Apolipoprotein E; Built environment; Cognition; Environment; Neighborhood; Older adults.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Apolipoprotein E2 / genetics
  • Apolipoprotein E4 / genetics
  • Apolipoproteins E / genetics*
  • Built Environment* / statistics & numerical data
  • Cognition*
  • Cognitive Dysfunction / etiology
  • Cognitive Dysfunction / genetics
  • Cross-Sectional Studies
  • Female
  • Genetic Predisposition to Disease / genetics
  • Genotype
  • Heterozygote
  • Humans
  • Male
  • Mental Status and Dementia Tests
  • Population Density
  • Residence Characteristics / statistics & numerical data*
  • Risk Factors
  • Walking / statistics & numerical data

Substances

  • Apolipoprotein E2
  • Apolipoprotein E4
  • Apolipoproteins E