Hippocampal gene expression patterns underlying the enhancement of memory by running in aged mice

Alexis M. Stranahan, Kim Lee, Kevin G. Becker, Yonqing Zhang, Stuart Maudsley, Bronwen Martin, Roy G. Cutler, Mark P. Mattson

Research output: Contribution to journalArticle

Abstract

Physical activity preserves cognition in the aging brain, but the mechanisms remain obscure. In order to identify candidate genes and pathways responsible for the preservation of cognitive function by exercise, we trained mice that had been exposed to lifelong running or sedentary lifestyle for 16 months in the hippocampus-dependent water maze. After water maze training, we analyzed the expression of 24,000 genes in the hippocampus using Illumina bead microarray. Runners show greater activation of genes associated with synaptic plasticity and mitochondrial function, and also exhibit significant downregulation of genes associated with oxidative stress and lipid metabolism. Running also modified the effects of learning on the expression of genes involved in cell excitability, energy metabolism, and insulin, MAP kinase and Wnt signaling. These results suggest that the enhancement of cognitive function by lifelong exercise is associated with an altered transcriptional profile following learning.

Original languageEnglish (US)
Pages (from-to)1937-1949
Number of pages13
JournalNeurobiology of Aging
Volume31
Issue number11
DOIs
StatePublished - Nov 2010
Externally publishedYes

Keywords

  • Aging
  • Cognition
  • Gene expression
  • Hippocampus
  • Wheel running

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)
  • Aging
  • Developmental Biology
  • Geriatrics and Gerontology

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    Stranahan, A. M., Lee, K., Becker, K. G., Zhang, Y., Maudsley, S., Martin, B., Cutler, R. G., & Mattson, M. P. (2010). Hippocampal gene expression patterns underlying the enhancement of memory by running in aged mice. Neurobiology of Aging, 31(11), 1937-1949. https://doi.org/10.1016/j.neurobiolaging.2008.10.016