[size=0.875]ReviewVolume 25, Issue 8p764-780August 2026Download Full Issue
The role of the gut microbiome in mediating neuroinflammation in immune-based neurological disordersClaude Steriade, MDCM[url=]a[/url],[url=]b[/url] Send email to [email protected] ∙ Prof Nicola Segata, PhD[url=]c[/url] ∙ Prof Deepak Saxena, PhD[url=]d[/url] Send email to [email protected]
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Published August 2026
DOI: 10.1016/S1474-4422(26)00193-6 External LinkAlso available on ScienceDirect External Link
Copyright: © 2026 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
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SummaryThe gut microbiome can influence brain health by modulating neuroinflammation through various mechanisms, including immune regulation, the production of metabolites that affect neural function, gut and blood每brain barrier integrity, upstream effects via the vagus nerve, upstream migration of gut-resident lymphocytes to the brain, bile acid signalling, and endocrine activity. Changes in gut microbiota have been observed in demyelinating conditions, autoimmune encephalitis, and epilepsy. Gut microbiota composition changes can affect neuroinflammation, disease progression, and treatment outcomes. Advances in microbiome research have improved the potential for clinical translation of findings; but limitations persist, driven by the largely correlational nature of clinical studies and the complexity of microbiome sequencing and interpretation. At present, only the ketogenic diet is routinely recommended by clinicians, whereas other microbiome-based interventions remain investigational. Multiple strategies for manipulating the gut microbiome, including dietary changes, prebiotics, probiotics, postbiotics, and faecal microbiota transplantation, might be used as disease-modifying therapies in the future.
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