Aged SOD overexpressing mice exhibit enhanced spatial memory while lacking hippocampal neurogenesis

Ariel Kamsler, Avi Avital, Varda Greenberger, Menahem Segal

Research output: Contribution to journalArticlepeer-review

Abstract

The recent finding that hippocampal slices from aged mice overexpressing the gene for superoxide dismutase (SOD) exhibit long-term potentiation (LTP) of reactivity to afferent stimulation that is significantly larger than that produced in aged wild-type (wt) mice has encouraged the exploration of the effects of reactive oxygen species (ROS) on learning in aged mice. In addition, young-adult and aged wt and SOD transgenic mice were used in an attempt to correlate adult neurogenesis with spatial learning. Aged wt and SOD mice exhibited a 90% reduction in doublecortin-labeled new dentate gyrus neurons as compared to young mice, with no significant difference between genotypes. In addition, aged SOD mice exhibited better performance than wt controls in both reference and working memory tasks in a water maze. These findings provide a behavioral measure to demonstrate that excessive production of H 2O2 is beneficial in aged mice.

Original languageEnglish
Pages (from-to)181-189
Number of pages9
JournalAntioxidants and Redox Signaling
Volume9
Issue number2
DOIs
StatePublished - Feb 2007
Externally publishedYes

ASJC Scopus subject areas

  • Molecular Biology
  • Physiology
  • Biochemistry
  • Clinical Biochemistry
  • Cell Biology

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