ArticleComprehensive physiology2025
Bile Acid Profile Differs Between Brain Regions in Rodents and Is Disrupted in a Rodent Model of Alzheimer's Disease.
Article in Comprehensive physiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- From Dysbiosis to Blood-Brain Barrier Disruption: The Metabolite-Mediated Gut-Brain Axis in Alzheimer's Disease.Molecular neurobiology · 2026Review
- Microbiota-gut-brain axis and bile acids-driven neuromodulation.Neural regeneration research · 2026Article
- The Collaborative Collapse: Bile Acid Dysmetabolism as a Central Pathogenic Driver in Canine and Feline Multi-Systemic Disorders-From Mechanisms to Precision Therapeutics.Veterinary sciences · 2026Review
- Rethinking on bile acid-brain axis: decoding neurotoxic and neuroprotective landscape in aging and Alzheimer's disease.Biogerontology · 2026Review
- Bile Acid Profile Differs Between Brain Regions in Rodents and Is Disrupted in a Rodent Model of Alzheimer's Disease.Comprehensive physiology · 2025Article
Corrections and comments
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Authors and funding
12 authors.
Funding
Abstract
Low but biologically relevant levels of bile acids are found in the brain and are altered in patients with Alzheimer's disease (AD). However, the regulation of brain bile acid levels and what drives brain bile acid dynamics are poorly understood. Bile acids are synthesized in the liver and further metabolized by bacteria in the gut. Therefore, bile acids are mediators of the liver-brain axis and the gut-brain axis. Additionally, whether the bile acid profile differs between brain regions and whether the brain region-specific bile acid profile is impacted by disease, such as AD, is unknown. Therefore, we tested the hypothesis that the brain bile acid profile is influenced by peripheral bile acid metabolism, differs between brain regions, and that these dynamics change in AD. To this end, we assessed the bile acid profile in the cortex and hippocampus of wild-type mice maintained on different diets. To test the effect of AD, we used the TgF344-AD rat model. We found that the brain bile acid profile in mice was mildly altered by diet and, in both mice and rats, differs substantially between brain regions. For example, cholic acid and taurocholic acid are enriched in the cortex relative to the hippocampus in both mice and rats. Further, using a rat model of AD, we found that brain region differences in bile acid profiles are attenuated in AD. Together, these data demonstrate that both peripheral and central regulatory mechanisms maintain bile acid homeostasis in specific brain regions and that these homeostatic mechanisms are disrupted in AD.
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