ArticleExperimental neurology2025
Stool-derived extracellular vesicles increase inflammasome signaling and regulate the gut-brain axis after stroke in Alzheimer's disease transgenic mice.
Article in Experimental neurology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Article
- Extracellular vesicle-mediated bidirectional communication between the brain and peripheral organs in Alzheimer's disease: evidence, mechanisms, and translational perspectives.Journal of nanobiotechnology · 2026Review
- Neuronal inflammasomes: balancing immunity, neuroinflammation, and homeostasis.Trends in immunology · 2026Review
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Authors and funding
8 authors.
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Abstract
Patients with Alzheimer's disease (AD) suffering from post-stroke gut dysfunction present with worsened neurological outcomes. This study investigated the role of stool-derived extracellular vesicle (EV)-mediated inflammasome signaling in the gut-brain axis following photothrombotic stroke (PTS) in aged 3xTg- AD and wildtype (WT) mice. Western Blot and immunohistochemical analyses evaluated inflammasome signaling proteins, Gasdermin D (GSDMD), and Aβ in intestinal and cortical tissues. Gut permeability was measured using a FITC-dextran assay 3 days post PTS. Adoptive transfer experiments assessed the impact of stool-derived EVs from PTS mice on inflammasome signaling in recipient naïve 3xTg and WT mice. At 3 days, 3xTg-PTS mice demonstrated significantly impaired sensorimotor Rotarod performance compared to WT-PTS mice. Both WT and 3xTg PTS mice had deficits compared to 3xTg and WT sham mice using the Open Field or Novel Object Recognition tests. Compared to WT- PTS mice, 3xTg-PTS mice had disrupted gut morphology at 1-month post-PTS, as well as increased gut permeability at 72 h. Immunohistochemical analysis also revealed activated microglial morphology and presence of GSDMD and Aβ in the brain and intestines post-PTS in 3xTg and WT mice. Adoptive transfer of stool-derived EVs from PTS mice to WT mice induced elevated levels of inflammasome signaling proteins in recipient cerebral cortices. These findings indicate an important role of stool-derived EV inflammasome signaling and pyroptosis in disruption of the bidirectional gut-brain axis after stroke leading to exacerbation of AD pathology in aged WT and 3xTg mice.
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