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Different environmental factors may trigger a neuroinflammatory response; the mechanisms of this activation may influence the pattern of activation, the immune subsets involved, and the persistence of the response. The duration of neuroinflammation may significantly outlast exposures, creating a potential unique vulnerability for rare or intermittent exposures. The neuroinflammatory response can be classified into acute, subacute, and chronic phases, with subacute neuroinflammation representing a transient state between acute and chronic inflammation. This phase, lasting from days to weeks, is denoted by metabolic disruptions, cognitive impairments, and peripheral immune activation. Environmental exposures, such as air pollution, pesticides, and heavy metals, and social factors impact oxidative stress, glial activation, and blood\u2013brain barrier disruption, leading to neuronal injury and cognitive decline. Notably, exposures like diesel fumes and wildfire smoke have been shown to induce neuroinflammation, subsequently impacting memory and learning, and exacerbating mental health conditions such as post-traumatic stress disorder, depression, and anxiety. Triggering of reactive astrogliosis via impacts on the blood\u2013brain barrier function may be the most common non-specific manner that environmental toxicants drive neuroinflammation, but direct outcomes from compounds that readily access the brain are also possible.<\/jats:p>","DOI":"10.1093\/toxsci\/kfag051","type":"journal-article","created":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T23:11:24Z","timestamp":1778195484000},"source":"Crossref","is-referenced-by-count":0,"title":["Contemporary Review: Temporal Dynamics of Neuroinflammation in Response to Environmental Exposure"],"prefix":"10.1093","volume":"209","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-5440-4269","authenticated-orcid":false,"given":"Brenna","family":"Baird","sequence":"first","affiliation":[{"name":"Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico , Albuquerque, NM, 87131,","place":["United 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