Cited by 289Fatty Acid Research and HealthAlzheimer's disease research and treatmentsDementia and Cognitive Impairment Research

A Randomized Placebo-Controlled Pilot Trial of Omega-3 Fatty Acids and Alpha Lipoic Acid in Alzheimer's Disease

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Shinto, Lynne, Quinn, Joseph, Montine, Thomas, Dodge, Hiroko H., Woodward, William, Baldauf-Wagner, Sara, Waichunas, Dana, Bumgarner, Lauren +3 more·2013·Journal of Alzheimer's Disease

Abstract

Oxidative stress, inflammation, and increased cholesterol levels are all mechanisms that have been associated with Alzheimer's disease (AD) pathology. Several epidemiologic studies have reported a decreased risk of AD with fish consumption. This pilot study was designed to evaluate the effects of supplementation with omega-3 fatty acids alone (ω-3) or omega-3 plus alpha lipoic acid (ω-3 + LA) compared to placebo on oxidative stress biomarkers in AD. The primary outcome measure was peripheral F2-isoprostane levels (oxidative stress measure). Secondary outcome measures included performance on: Mini-Mental State Examination (MMSE), Activities of Daily Living/Instrumental Activities of Daily Living (ADL/IADL), and Alzheimer Disease Assessment Scale-cognitive subscale (ADAS-cog). Thirty-nine AD subjects were randomized to one of three groups: 1) placebo, 2) ω-3, or 3) ω-3 + LA for a treatment duration of 12 months. Eighty seven percent (34/39) of the subjects completed the 12-month intervention. There was no difference between groups at 12 months in peripheral F2-isoprostane levels (p = 0.83). The ω-3 + LA and ω-3 were not significantly different than the placebo group in ADAS-cog (p = 0.98, p = 0.86) and in ADL (p = 0.15, p = 0.82). Compared to placebo, the ω-3 + LA showed less decline in MMSE (p < 0.01) and IADL (p = 0.01) and the ω-3 group showed less decline in IADL (p < 0.01). The combination of ω-3 + LA slowed cognitive and functional decline in AD over 12 months. Because the results were generated from a small sample size, further evaluation of the combination of omega-3 fatty acids plus alpha-lipoic acid as a potential treatment in AD is warranted.

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  • Preclinical studies and investigations in individuals affected by Alzheimer's disease provided evidence that alpha lipoic acid may promote neurocognitive enhancement via pleiotropic mechanisms, including antioxidant mitochondrial activity and anti-inflammatory properties.

    “Moreover, preclinical studies and investigations in individuals affected by Alzheimer’s disease [132] provided evidence that ALA may promote neurocognitive enhancement via pleiotropic mechanisms, including antioxidant mitochondrial activity and anti-inflammatory properties [133]”

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Authors
Shinto, L., Quinn, J., Montine, T., Dodge, H. H., Woodward, W., Baldauf-Wagner, S., Waichunas, D., Bumgarner, L., Bourdette, D., Silbert, L., & Kaye, J.
Affiliations
  • Oregon Health & Science University (US)
  • University of Washington (US)
Corresponding author
Shinto, Lynne
Venue
Journal of Alzheimer's Disease
Published
2013-10-29
Volume
38
Issue
1
Pages
111-120
ISSN
  • 1387-2877 (ISSN-L)
  • 1875-8908
OpenAlex
W1528771930
Cited by
288
References
38
Citations by year
2026: 12 · 2025: 28 · 2024: 19 · 2023: 30 · 2022: 20 · 2021: 25 · 2020: 32 · 2019: 16 · 2018: 19 · 2017: 19 · 2016: 24 · 2015: 25 · 2014: 13
FWCI
19.11
Type
journal article
Language
en
Open access
Locations
  • Journal of Alzheimer s Disease (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion, cc-by-nc)
  • PubMed Central (acceptedVersion, cc-by-nc)
Funders
  • National Institutes of Health (AG‐08017)
  • National Institute on Aging (AG 08017, P30AG008017, R21AG023805)
  • National Center for Research Resources (M01RR00334, M01RR000334, UL1RR024140)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
Alzheimer's disease, omega-3 fatty acids
MeSH terms
Activities of Daily Living, Aged, Aged, 80 and over, Alzheimer Disease, Analysis of Variance, Cognition Disorders, Double-Blind Method, Female, Humans, Thioctic Acid, Male, Mental Status Schedule, Middle Aged, Pilot Projects, Fatty Acids, Omega-3, Outcome Assessment, Health Care, F2-Isoprostanes

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