DHA diet reduces AD pathology in young APPswe/PS1ΔE9 transgenic mice: Possible gender effects

Sylvia E. Perez, Brian M. Berg, Kenneth A. Moore, Bin He, Scott E. Counts, Jason J. Fritz, Yuan Shih Hu, Orly Lazarov, James J. Lah, Elliott J. Mufson

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

Epidemiological and clinical trial findings suggest that consumption of docosahexaenoic acid (DHA) lowers the risk of Alzhemier's disease (AD). We examined the effects of short-term (3 months) DHA enriched diet on plaque deposition and synaptic deficts in forebrain of young APPswe/PS1ΔE9 transgenic (tg) and non-transgenic (ntg) mice. Gas chromatography revealed a significant increase in DHA concomitant with a decrease of arachidonic acid in both brain and liver in mice fed with DHA. Female tg mice consumed relatively more food daily than ntg female mice, independent of diet. Plaque load was significantly reduced in the cortex, ventral hippocampus and striatum of female APPswe/PS1ΔE9 tg mice on DHA diet compared to female tg mice on control diet. Immunoblot quantitation of the APOE receptor, LR11, which is involved in APP trafficking and Aβ production, were unchanged in mice on DHA or control diets. Moreover drebrin levels were significantly increased in the hippocampus of tg mice on the DHA diet. Finally, in vitro DHA treatment prevented amyloid toxicity in cell cultures. Our findings support the concept that increased DHA consumption may play and important role in reducing brain insults in female AD patients.

Original languageEnglish (US)
Pages (from-to)1026-1040
Number of pages15
JournalJournal of Neuroscience Research
Volume88
Issue number5
DOIs
StatePublished - Apr 2010
Externally publishedYes

Keywords

  • Alzheimer's disease
  • Amyloid
  • Drebrin
  • Transgenics
  • n-3 fatty acids

ASJC Scopus subject areas

  • Cellular and Molecular Neuroscience

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