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Direct and indirect effects of lipids on microglia function

Q Leyrolle1, S Layé1, A Nadjar1

  • 1INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, 33076 Bordeaux, France; Univ. Bordeaux, Nutrition et Neurobiologie Intégrée, UMR 1286, 33076 Bordeaux, France.

Neuroscience Letters
|June 26, 2019
PubMed

Insights

Dietary fatty acids significantly impact microglia, the brain's immune cells, influencing brain health and disease. Understanding these nutrition-microglia interactions offers potential for new therapeutic strategies.

Area of Science:

  • Neuroscience
  • Immunology
  • Nutrition Science

Background:

  • Microglia are crucial for brain homeostasis, development, and neuroinflammation across the lifespan.
  • Microglia exhibit high sensitivity to environmental factors, including dietary components.
  • Dysfunctional microglia are implicated in aging and neurodegenerative diseases.

Purpose of the Study:

  • To review the mechanisms by which dietary fatty acids influence microglial physiology.
  • To explore both direct and indirect (gut microbiota, hormones) pathways of fatty acid modulation.
  • To highlight the potential of nutritional interventions for microglia-related disorders.

Main Methods:

  • Literature review of in vitro and in vivo studies.
  • Analysis of fatty acid effects on microglial function and signaling.
  • Examination of indirect mechanisms involving the gut-brain axis and hormonal regulation.

Main Results:

  • Dietary fatty acids, in both quantity and type, are potent modulators of microglia.
  • Fatty acids directly impact microglial receptors and cellular functions.
  • Indirect pathways, including gut microbiota and hormones, mediate fatty acid effects on microglia.

Conclusions:

  • Dietary fatty acids represent a promising avenue for modulating microglial function.
  • Nutritional strategies could offer novel therapeutic or preventive approaches for neurodegenerative diseases.
  • Further research into fatty acid-microglia interactions is warranted for clinical applications.
Keywords:
Fatty acidsGut microbiotaHormonesInflammationMicrogliaObesity

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