ReviewCNS neuroscience & therapeutics2025
The Blood-Brain Barrier as an Integration Hub in Alzheimer's Disease: How Microbiota Metabolites Modulate Central Signal Processing.
Review in CNS neuroscience & therapeutics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- The Gut Mucosal Barrier-Neuroinflammation Axis in Vascular Cognitive Impairment Induced by Chronic Cerebral Ischemia: A Narrative Review of Candidate Mechanisms.International journal of molecular sciences · 2026Review
- The Blood-Brain Barrier as an Integration Hub in Alzheimer's Disease: How Microbiota Metabolites Modulate Central Signal Processing.CNS neuroscience & therapeutics · 2025Review
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundWhile both gut-brain axis dysfunction and blood-brain barrier (BBB) breakdown are documented in Alzheimer's disease (AD), current research treats these as separate phenomena. However, emerging evidence suggests that the BBB may function as an active integration interface that processes microbiota-derived metabolites and thereby potentially modulates how peripheral signals influence cognitive health.
objectiveThis review synthesizes current evidence on microbiota metabolites as modulators of BBB integration capacity, discussing how such mechanisms may contribute to variability in cognitive outcomes despite similar gut microbiome profiles by demonstrating how BBB signal-integration mechanisms determine gut-brain communication effectiveness in AD.
methodsWe analyzed peer-reviewed literature from 2010 to 2025, focusing on BBB dynamic properties, microbiota metabolite effects on BBB function, and their integration patterns, emphasizing functional evidence supporting the BBB's active signal processing capabilities.
resultsCurrent evidence suggests that the BBB exhibits integration properties, including dynamic permeability regulation, context-dependent metabolite processing, and coordinated responses to complex signal streams. Short-chain fatty acids enhance integration capacity through HDAC inhibition and coordinated receptor activation, while lipopolysaccharides and trimethylamine N-oxide may overwhelm integration processes through TLR4-mediated disruption. BBB dysfunction precedes classical AD pathology and correlates with altered metabolite processing capacity. Individual variations in BBB integration capacity may help account for why individuals with similar gut microbiome profiles show different cognitive outcomes.
conclusionViewing the BBB as an active integration interface offers a useful perspective for organizing current evidence on gut-brain interactions in AD. This conceptual perspective suggests that therapeutic strategies might benefit from supporting BBB integration capacity and optimizing metabolite-processing mechanisms alongside improving gut health.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.