ArticleJournal of neuroinflammation2024
Extracellular vesicles released from microglia after palmitate exposure impact brain function.
Article in Journal of neuroinflammation, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Palmitic Acid Amplifies Microglial Inflammatory Activation Involving C5aR1-Sensitive Inflammatory Signaling and JMJD3/H3K27me3-Related Epigenetic Changes.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2026Article
- Aberrant CX3CL1-CX3CR1 Signaling Reprograms Microglial Exosome Secretion via KIFC2 to Drive Cognitive Impairment in Chronic Pain.International journal of molecular sciences · 2026Article
- Palmitic acid-induced autolysosomal dysfunction and lipotoxicity in neuroinflammation and neurodegeneration.Neural regeneration research · 2026Article
- Neurovascular Unit-Derived Extracellular Vesicles as Regulators of Post-Stroke Pathology and Neurorestoration.Biomolecules · 2026Review
- Microglia Mitochondrial Metabolism in Neurological Diseases.Molecular neurobiology · 2026Review
- Metabolic inflammation at the adipose-brain axis.Frontiers in physiology · 2026Review
- High Extracellular Glucose Concentration Drives Palmitate-Induced Toxicity and Metabolic Dysfunction in BV2 Microglia Cells.Molecular neurobiology · 2025Article
- Microglia-to-neuron signaling linksProceedings of the National Academy of Sciences of the United States of America · 2025Article
- Microglia-to-neuron signaling increases lipid droplet metabolism, enhancing neuronal network activity.bioRxiv : the preprint server for biology · 2025Article
- Challenges of Investigating Compartmentalized Brain Energy Metabolism Using Nuclear Magnetic Resonance Spectroscopy in vivo.Neurochemical research · 2025Review
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Dietary patterns that include an excess of foods rich in saturated fat are associated with brain dysfunction. Although microgliosis has been proposed to play a key role in the development of brain dysfunction in diet-induced obesity (DIO), neuroinflammation with cytokine over-expression is not always observed. Thus, mechanisms by which microglia contribute to brain impairment in DIO are uncertain. Using the BV2 cell model, we investigated the gliosis profile of microglia exposed to palmitate (200 µmol/L), a saturated fatty acid abundant in high-fat diet and in the brain of obese individuals. We observed that microglia respond to a 24-hour palmitate exposure with increased proliferation, and with a metabolic network rearrangement that favors energy production from glycolysis rather than oxidative metabolism, despite stimulated mitochondria biogenesis. In addition, while palmitate did not induce increased cytokine expression, it modified the protein cargo of released extracellular vesicles (EVs). When administered intra-cerebroventricularly to mice, EVs secreted from palmitate-exposed microglia in vitro led to memory impairment, depression-like behavior, and glucose intolerance, when compared to mice receiving EVs from vehicle-treated microglia. We conclude that microglia exposed to palmitate can mediate brain dysfunction through the cargo of shed EVs.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.