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Central to this connection is the dysregulation of lipid metabolism, which extends beyond peripheral tissues to the brain, defective autolysosomal function, oxidative stress, inflammation, and insulin resistance. Lipids, which constitute over half of dry weight of the brain, play critical roles in energy provision, structural integrity, and synaptic function. Dysregulation of lipid metabolism contributes to neuroinflammation, impaired neuronal function, and disrupted blood\u2013brain barrier integrity. Palmitic acid, a saturated fatty acid abundant in high-fat diets, serves as a key model for studying lipid-induced toxicity (lipotoxicity) in the brain. Palmitic acid disrupts autophagy and lysosomal function, mitochondrial function, triggering oxidative stress, contributing to neuroinflammation and neurodegeneration. These effects are particularly pronounced in neurons, which are highly susceptible to lipid-induced toxicity due to their high metabolic demands. Glial cells, including astrocytes, microglia, and oligodendrocytes, also exhibit distinct vulnerabilities and adaptive responses to lipid metabolism dysregulation, further contributing to neuroinflammation and demyelination. Therapeutic strategies, such as supplementation with polyunsaturated fatty acids, AMP-activated protein kinase activation, and lysosome-targeted interventions, show promise in mitigating palmitic acid\u2013induced lipotoxicity and restoring cellular homeostasis. This review comprehensively examines palmitic acid\u2013induced lipotoxicity and its impact on autolysosomal dysfunction across various central nervous system cell types, including neurons, astrocytes, microglia, and oligodendrocytes. Additionally, it highlights therapeutic approaches to restore autolysosomal function under lipotoxic conditions. Advances in multi-omics technologies and a deeper understanding of intercellular crosstalk offer new avenues for developing targeted therapies to restore autolysosomal function, and attenuate neuroinflammation and neurodegeneration.<\/jats:p>","DOI":"10.4103\/nrr.nrr-d-25-00432","type":"journal-article","created":{"date-parts":[[2025,7,6]],"date-time":"2025-07-06T08:00:08Z","timestamp":1751788808000},"page":"2806-2811","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":16,"title":["Palmitic acid\u2013induced autolysosomal dysfunction and lipotoxicity in neuroinflammation and neurodegeneration"],"prefix":"10.4103","volume":"21","author":[{"given":"Eka Norfaishanty","family":"Saipuljumri","sequence":"first","affiliation":[{"name":"Program in Neuroscience & Cognitive Science, University of Arizona, Tucson, AZ, 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