Impact of Peripheral Inflammation on Blood-Brain Barrier Dysfunction and Its Role in Neurodegenerative Diseases.
Level 5 - mechanism / opinion, no new human data
Narrative literature review synthesizing mechanistic and preclinical research without systematic quantitative pooling.
PubMed 40141084 · doi:10.3390/ijms26062440
What was done
The authors conducted a literature search across Web of Science, PubMed, Scopus, Wiley, ScienceDirect, and Medline covering publications from 2015 to 2025. They summarized molecular mechanisms linking peripheral inflammation, gut microbiota alterations, and blood-brain barrier (BBB) dysfunction in neurodegenerative conditions including Alzheimer's and Parkinson's diseases.
What was found
The abstract reports no numerical data or effect sizes. It qualitatively describes how gut-derived metabolites, systemic inflammation, and immune signaling drive BBB breakdown, noting that regional differences in vascularization and metabolic activity render certain brain regions selectively vulnerable to disruption.
Why it matters
The review organizes current mechanistic concepts around systemic and gut-driven neurovascular damage, emphasizing the need for targeted microbiome and anti-inflammatory strategies in neurodegenerative disease management.
Limits
The paper is a non-quantitative narrative review rather than a formal systematic review or primary empirical study. The abstract provides no study counts, quality appraisal metrics, or primary clinical data, relying primarily on mechanistic and preclinical models.
Cited by
- supports Increased gut permeability from dysbiosis allows messengers across the blood-brain barrier, making individuals more prone to neurodegenerative disorders like Parkinson's and Alzheimer's.