Cited by 707Fatty Acid Research and HealthAlzheimer's disease research and treatmentsNeuroscience and Neuropharmacology Research

Docosahexaenoic acid protects from dendritic pathology in an Alzheimer's disease mouse model

Open access
Calon, Frédéric, Lim, Giselle P., Yang, Fusheng, Morihara, Takashi, Teter, Bruce, Ubeda, Oliver, Rostaing, Phillippe, Triller, Antoine +4 more·2004·Neuron

Abstract

Learning and memory depend on dendritic spine actin assembly and docosahexaenoic acid (DHA), an essential n-3 (omega-3) polyunsaturated fatty acid (PFA). High DHA consumption is associated with reduced Alzheimer's disease (AD) risk, yet mechanisms and therapeutic potential remain elusive. Here, we report that reduction of dietary n-3 PFA in an AD mouse model resulted in 80%-90% losses of the p85alpha subunit of phosphatidylinositol 3-kinase and the postsynaptic actin-regulating protein drebrin, as in AD brain. The loss of postsynaptic proteins was associated with increased oxidation, without concomitant neuron or presynaptic protein loss. n-3 PFA depletion increased caspase-cleaved actin, which was localized in dendrites ultrastructurally. Treatment of n-3 PFA-restricted mice with DHA protected against these effects and behavioral deficits and increased antiapoptotic BAD phosphorylation. Since n-3 PFAs are essential for p85-mediated CNS insulin signaling and selective protection of postsynaptic proteins, these findings have implications for neurodegenerative diseases where synaptic loss is critical, especially AD.

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Crossref · 10.1016/j.neuron.2004.08.013

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Authors
Calon, F., Lim, G. P., Yang, F., Morihara, T., Teter, B., Ubeda, O., Rostaing, P., Triller, A., Salem, N., Ashe, K. H., Frautschy, S. A., & Cole, G. M.
Affiliations
  • University of California, Los Angeles (US)
  • Inserm (FR)
  • National Institutes of Health (US)
  • University of Minnesota (US)
Corresponding author
Cole, Greg M.
Venue
Neuron
Publisher
Elsevier BV
Published
2004-09
Volume
43
Issue
5
Pages
633-645
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2158226583
Cited by
707
References
85
Citations by year
2026: 11 · 2025: 8 · 2024: 14 · 2023: 12 · 2022: 12 · 2021: 22 · 2020: 21 · 2019: 29 · 2018: 21 · 2017: 27 · 2016: 37 · 2015: 35 · 2014: 34 · 2013: 39 · 2012: 43
FWCI
41.50
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Aging (P01AG16570, R01AG016793, P50AG016570, R01AG013741, P50-AG 16570, P50-AG05142, R01AG010685, P50AG005142, AG10685, AG16793, R01 AG13741)
  • National Institute of Neurological Disorders and Stroke (R01NS043946, NS43946)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
docosahexaenoic acid, Alzheimer's disease, omega-3 fatty acids, phosphatidylinositol 3-kinase, drebrin, postsynaptic proteins, actin oxidation, Bad phosphorylation, synaptic loss, insulin signaling, neuroprotection
MeSH terms
Actins, Alzheimer Disease, Animals, Brain, Carrier Proteins, Dendrites, Dietary Fats, Unsaturated, Disease Models, Animal, Docosahexaenoic Acids, Female, Food, Formulated, Humans, Male, Mice, Transgenic, Microscopy, Electron, Nerve Tissue Proteins, Neuropeptides, Phosphorylation, Synapses, Down-Regulation, Apoptosis, Oxidative Stress, Phosphatidylinositol 3-Kinases, Protein Subunits, bcl-Associated Death Protein, Mice

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