Evidence map›Paper›PMID 23357386›Full record

ArticleInfection and immunity2013

The surface layer of Tannerella forsythia contributes to serum resistance and oral bacterial coaggregation.

Naohiro Shimotahira, Yuichi Oogai, Miki Kawada-Matsuo, Sakuo Yamada, Kenji Fukutsuji, Keiji Nagano, Fuminobu Yoshimura, Kazuyuki Noguchi, Hitoshi Komatsuzawa

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
4.9field-weighted citation impact, top 4% 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

30 citing papers in PubMed, 51 citations in OpenAlex.

  1. Article
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  10. Shut-Down of Type IX Protein Secretion Alters the Host Immune Response toFrontiers in cellular and infection microbiology · 2022
    Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Frontiers in immunology · 2020
    Article
  16. S-layer Impacts the Virulence of Bacillus in Endophthalmitis.Investigative ophthalmology & visual science · 2019
    Article
  17. Review
  18. Article
  19. Article
  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 at 3 institutions in 1 country.

Naohiro ShimotahiraDepartment of Oral Microbiology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.
Yuichi Oogai
Miki Kawada-Matsuo
Sakuo Yamada
Kenji Fukutsuji
Keiji Nagano
Fuminobu Yoshimura
Kazuyuki Noguchi
Hitoshi Komatsuzawa
Kagoshima University · JPAichi Gakuin University · JPKawasaki Medical School · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tannerella forsythia is an anaerobic, Gram-negative bacterium involved in the so-called "red complex," which is associated with severe and chronic periodontitis. The surface layer (S-layer) of T. forsythia is composed of cell surface glycoproteins, such as TfsA and TfsB, and is known to play a role in adhesion/invasion and suppression of proinflammatory cytokine expression. Here we investigated the association of this S-layer with serum resistance and coaggregation with other oral bacteria. The growth of the S-layer-deficient mutant in a bacterial medium containing more than 20% non-heat-inactivated calf serum (CS) or more than 40% non-heat-inactivated human serum was significantly suppressed relative to that of the wild type (WT). Next, we used confocal microscopy to perform quantitative analysis on the effect of serum. The survival ratio of the mutant exposed to 100% non-heat-inactivated CS (76% survival) was significantly lower than that of the WT (97% survival). Furthermore, significant C3b deposition was observed in the mutant but not in the WT. In a coaggregation assay, the mutant showed reduced coaggregation with Streptococcus sanguinis, Streptococcus salivarius, and Porphyromonas gingivalis but strong coaggregation with Fusobacterium nucleatum. These results indicated that the S-layer of T. forsythia plays multiple roles in virulence and may be associated with periodontitis.

Indexed as

Bacterial AdhesionBacteroidetesComplement C3bHumansMembrane GlycoproteinsMicrobial ViabilitySerumComplement C3bMembrane GlycoproteinsS-layer proteins

Identifiers

PMID23357386
PMCPMC3639587
OpenAlexW2170208330

What OpenQuestion holds

Textmetadata
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.