Evidence map›Paper›PMID 22022548›Full record

ArticlePloS one2011

Outer membrane vesicles of Porphyromonas gingivalis elicit a mucosal immune response.

Ryoma Nakao, Hideki Hasegawa, Kuniyasu Ochiai, Shogo Takashiba, Akira Ainai, Makoto Ohnishi, Haruo Watanabe, Hidenobu Senpuku

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed, 1 pooled it
4.6field-weighted citation impact, top 5% of its field
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

64 citing papers in PubMed, 1 synthesis or guideline pooled it, 116 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Automated Glycan Assembly ofJournal of the American Chemical Society · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Outer membrane vesicles ofFrontiers in microbiology · 2025
    Review
  13. Review
  14. A brief review of membrane vesicles fromFrontiers in microbiology · 2025
    Review
  15. Intraperitoneal Injection of theInternational journal of molecular sciences · 2024
    Article
  16. Vaccines · 2024
    Review
  17. Article
  18. Review
  19. Article
  20. The Effect of Extracellular Vesicles on Thrombosis.Journal of cardiovascular translational research · 2023
    Review

4 more citing papers are in PubMed but not listed here.

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

8 authors at 4 institutions in 2 countries.

Ryoma NakaoDepartment of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan.
Hideki Hasegawa
Kuniyasu Ochiai
Shogo Takashiba
Akira Ainai
Makoto Ohnishi
Haruo Watanabe
Hidenobu Senpuku
National Institute of Infectious Diseases · JPNational Institutes of Health · USNihon University · JPOkayama University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We previously reported that mutation of galE in Porphyromonas gingivalis has pleiotropic effects, including a truncated lipopolysaccharide (LPS) O-antigen and deglycosylation of the outer membrane protein OMP85 homolog. In the present study, further analysis of the galE mutant revealed that it produced little or no outer membrane vesicles (OMVs). Using three mouse antisera raised against whole cells of the P. gingivalis wild type strain, we performed ELISAs to examine the reactivity of these antisera with whole cells of the wild type or the galE mutant. All three antisera had significantly lower reactivity against the galE mutant compared to wild type. OMVs, but not LPS, retained the immunodominant determinant of P. gingivalis, as determined by ELISAs (with wild type LPS or OMVs as antigen) and absorption assays. In addition, we assessed the capacity of OMVs as a vaccine antigen by intranasal immunization to BALB/c mice. Synthetic double-stranded RNA polyriboinosinic polyribocytidylic acid [Poly (I∶C)], an agonist of Toll-like receptor 3 (TLR3), was used as the mucosal adjuvant. Vaccination with OMV elicited dramatically high levels of P. gingivalis-specific IgA in nasal washes and saliva, as well as serum IgG and IgA. In conclusion, the OMVs of P. gingivalis have an important role in mucosal immunogenicity as well as in antigenicity. We propose that P. gingivalis OMV is an intriguing immunogen for development of a periodontal disease vaccine.

Indexed as

Administration, IntranasalAnimalsBacterial ProteinsCell MembraneCross ReactionsFemaleImmunity, HumoralImmunity, MucosalImmunizationImmunodominant EpitopesLipopolysaccharidesMiceMice, Inbred BALB CMutationPorphyromonas gingivalisBacterial ProteinsImmunodominant EpitopesLipopolysaccharides

Identifiers

PMID22022548
PMCPMC3193504
OpenAlexW1992655174

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.