Evidence map›Paper›PMID 37781094›Full record

SynthesisFrontiers in molecular neuroscience2023

Bacterial extracellular vesicles - brain invaders? A systematic review.

Anna Kaisanlahti, Sonja Salmi, Sohvi Kumpula, Sajeen Bahadur Amatya, Jenni Turunen, Mysore Tejesvi, Nadiya Byts, Terhi Tapiainen, Justus Reunanen

Abstract readSystematic Review
In one paragraph

Synthesis in Frontiers in molecular neuroscience, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

32 citing papers in PubMed.

  1. Review
  2. Effect of gut bacterial extracellular vesicles on angiogenic potential and vascular integrity: positive and negative aspects.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2026
    Review
  3. Article
  4. Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. SypC, a symbiont outer membrane vesicle protein, impacts the development of the squid-vibrio partnership.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  13. Aging-Driven Inter-Organ Crosstalk in Postmenopausal Osteoporosis: From Immunometabolic Drift to Multisystem Frailty.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Review
  14. [Research progress on the mechanism and potential applications of gut microbiota-derived extracellular vesicles in ischemic stroke].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2026
    Review
  15. Article
  16. Review
  17. Review
  18. Extracellular vesicles as indicators of environmental stress response inExtracellular vesicles and circulating nucleic acids · 2026
    Article
  19. Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Anna KaisanlahtiBiocenter Oulu, University of Oulu, Oulu, Finland.
Sonja SalmiDisease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland.
Sohvi KumpulaBiocenter Oulu, University of Oulu, Oulu, Finland.
Sajeen Bahadur AmatyaBiocenter Oulu, University of Oulu, Oulu, Finland.
Jenni TurunenBiocenter Oulu, University of Oulu, Oulu, Finland.
Mysore TejesviBiocenter Oulu, University of Oulu, Oulu, Finland.
Nadiya BytsBiocenter Oulu, University of Oulu, Oulu, Finland.
Terhi TapiainenBiocenter Oulu, University of Oulu, Oulu, Finland.
Justus ReunanenBiocenter Oulu, University of Oulu, Oulu, Finland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Knowledge on the human gut microbiota in health and disease continues to rapidly expand. In recent years, changes in the gut microbiota composition have been reported as a part of the pathology in numerous neurodegenerative diseases. Bacterial extracellular vesicles (EVs) have been suggested as a novel mechanism for the crosstalk between the brain and gut microbiota, physiologically connecting the observed changes in the brain to gut microbiota dysbiosis. Methods: Publications reporting findings on bacterial EVs passage through the blood-brain barrier were identified in PubMed and Scopus databases. Results: The literature search yielded 138 non-duplicate publications, from which 113 records were excluded in title and abstract screening step. From 25 publications subjected to full-text screening, 8 were excluded. The resulting 17 publications were considered for the review. Discussion: Bacterial EVs have been described with capability to cross the blood-brain barrier, but the mechanisms behind the crossing remain largely unknown. Importantly, very little data exists in this context on EVs secreted by the human gut microbiota. This systematic review summarizes the present evidence of bacterial EVs crossing the blood-brain barrier and highlights the importance of future research on gut microbiota-derived EVs in the context of gut-brain communication across the blood-brain barrier.

Indexed as

bacteriablood–brain barrierbrainextracellular vesiclesmicrobiota

Identifiers

PMID37781094
PMCPMC10537964

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.