Cited by 420Fatty Acid Research and HealthNeuroinflammation and Neurodegeneration MechanismsInflammatory mediators and NSAID effects

Anti-inflammatory effects of omega-3 fatty acids in the brain: physiological mechanisms and relevance to pharmacology

Layé, Sophie, Nadjar, Agnès, Joffre, Corinne, Bazinet, Richard P.·2018·Pharmacological Reviews

Abstract

Classically, polyunsaturated fatty acids (PUFA) were largely thought to be relatively inert structural components of brain, largely important for the formation of cellular membranes. Over the past 10 years, a host of bioactive lipid mediators that are enzymatically derived from arachidonic acid, the main n-6 PUFA, and docosahexaenoic acid, the main n-3 PUFA in the brain, known to regulate peripheral immune function, have been detected in the brain and shown to regulate microglia activation. Recent advances have focused on how PUFA regulate the molecular signaling of microglia, especially in the context of neuroinflammation and behavior. Several active drugs regulate brain lipid signaling and provide proof of concept for targeting the brain. Because brain lipid metabolism relies on a complex integration of diet, peripheral metabolism, including the liver and blood, which supply the brain with PUFAs that can be altered by genetics, sex, and aging, there are many pathways that can be disrupted, leading to altered brain lipid homeostasis. Brain lipid signaling pathways are altered in neurologic disorders and may be viable targets for the development of novel therapeutics. In this study, we discuss in particular how n-3 PUFAs and their metabolites regulate microglia phenotype and function to exert their anti-inflammatory and proresolving activities in the brain.

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Crossref · 10.1124/pr.117.014092

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425 of 425 references verified0 citation errors · 0 not checkable

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  • Low levels of blood n-3 polyunsaturated fatty acids correlate with heightened inflammatory status and depression risk in humans.

    “In contrast, low levels of blood n-3 PUFA correlate with heightened inflammatory status and depression risk in humans, whereas imposed dietary n-3 deficiency in rodents diminishes brain n-3 levels and stimulates neuroinflammation and anxiety-and depressive-like behaviors [47].”

    From The menace of obesity to depression and anxiety prevalence (2022) · cites this paper as [47]

  • Imposed dietary n-3 deficiency in rodents diminishes brain n-3 levels and stimulates neuroinflammation and anxiety- and depressive-like behaviors.

    “In contrast, low levels of blood n-3 PUFA correlate with heightened inflammatory status and depression risk in humans, whereas imposed dietary n-3 deficiency in rodents diminishes brain n-3 levels and stimulates neuroinflammation and anxiety-and depressive-like behaviors [47].”

    From The menace of obesity to depression and anxiety prevalence (2022) · cites this paper as [47]

  • N-3 supplementation dampens neuroinflammation and attenuates behavioral indices of mood deficits in rodents.

    “Several reports link higher n-3 consumption with lower prevalence and severity of mood disturbances in humans [45] and demonstrate that n-3 supplementation dampens neuroinflammation and attenuates behavioral indices of mood deficits in rodents [46,47].”

    From The menace of obesity to depression and anxiety prevalence (2022) · cites this paper as [47]

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Authors
Layé, S., Nadjar, A., Joffre, C., & Bazinet, R. P.
Affiliations
  • Université de Bordeaux (FR)
  • University of Toronto (CA)
Venue
Pharmacological Reviews
Publisher
Elsevier BV
Published
2018-01
Volume
70
Issue
1
Pages
12-38
ISSN
0031-6997 (ISSN-L)
OpenAlex
W2775574923
Cited by
420
References
425
Citations by year
2026: 41 · 2025: 46 · 2024: 36 · 2023: 43 · 2022: 56 · 2021: 64 · 2020: 66 · 2019: 43 · 2018: 24 · 2017: 1
FWCI
3.76
Type
journal article
Language
en
Open access
closed
Locations
  • Pharmacological Reviews (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • Oskar-Bordeaux (Universite de Bordeaux) (submittedVersion)
Funders
Canadian Institutes of Health Research
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Pharmacology › Inflammatory mediators and NSAID effects
Keywords
omega-3 fatty acids, docosahexaenoic acid, polyunsaturated fatty acids, microglial activation, neuroinflammation, eicosanoids, arachidonic acid metabolites, specialized pro-resolving mediators, neurological disorders, anti-inflammatory activity, microglial phenotype
MeSH terms
Animals, Anti-Inflammatory Agents, Brain, Humans, Fatty Acids, Omega-3, Microglia

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