Evidence map›Paper›PMID 11705927›Full record

ArticleInfection and immunity2001

Identification of independent Streptococcus gordonii SspA and SspB functions in coaggregation with Actinomyces naeslundii.

P G Egland, L D Dû, P E Kolenbrander

Abstract read
In one paragraph

Article in Infection and immunity, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
3.4field-weighted citation impact, top 8% 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

25 citing papers in PubMed, 69 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Probing of microbial biofilm communities for coadhesion partners.Applied and environmental microbiology · 2014
    Article
  9. Microbial interactions in building of communities.Molecular oral microbiology · 2013
    Review
  10. Review
  11. Article
  12. Platelet-bacterial interactions.Cellular and molecular life sciences : CMLS · 2010
    Review
  13. Article
  14. Article
  15. Crystal structure of the variable domain of the Streptococcus gordonii surface protein SspB.Protein science : a publication of the Protein Society · 2009
    Article
  16. The thrombotic potential of oral pathogens.Journal of oral microbiology · 2009
    Article
  17. Review
  18. A crystallizable form of the Streptococcus gordonii surface antigen SspB C-domain obtained by limited proteolysis.Acta crystallographica. Section F, Structural biology and crystallization communications · 2009
    Article
  19. Article
  20. Article
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

3 authors at 1 institution in 1 country.

P G EglandOral Infection and Immunity Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland 20892, USA.
L D Dû
P E Kolenbrander
National Institutes of Health · US

Funding

Interactions Between Actinomyces And Other BacteriaZ01DE000273 · NIDCR · NATIONAL INSTITUTE OF DENTAL & CRANIOFACIAL RESEARCH · PI KOLENBRANDER, PAUL E · 1985 to 2008
$1.9M
Cell-cell Interactions Between Oral Actinomyces And Other BacteriaZIADE000273 · NIDCR · NATIONAL INSTITUTE OF DENTAL & CRANIOFACIAL RESEARCH · PI KOLENBRANDER, PAUL E · 2009 to 2009
$679k
6 · The paper itself

Abstract

The initial stages of dental plaque formation involve the adherence of early colonizing organisms such as Streptococcus gordonii and Actinomyces naeslundii to the saliva-coated tooth surface and to each other. The S. gordonii surface proteins SspA and SspB are known to play a role in adherence to salivary proteins and mediate coaggregation with other bacteria. Coaggregation is the adhesin receptor-mediated interaction between genetically distinct cell types and appears to be ubiquitous among oral isolates. To define the function of SspA and SspB separately on the surface of their natural host, we constructed and analyzed the coaggregation properties of an isogenic sspB mutant of S. gordonii DL1, an sspAB double mutant, and a previously described sspA mutant. A. naeslundii strains have been previously classified into six coaggregation groups based on the nature of their coaggregations with S. gordonii DL1 and other oral streptococci. Coaggregation assays with the sspA and sspB mutants showed that SspA and SspB are the streptococcal proteins primarily responsible for defining these coaggregation groups and, thus, are highly significant in the establishment of early dental plaque. SspA exhibited two coaggregation-specific functions. It participated in lactose-inhibitable and -noninhibitable interactions, while SspB mediated only lactose-noninhibitable coaggregations. Accordingly, the sspAB double mutant lacked these functions and allowed us to detect a third coaggregation interaction with one of these organisms. These proteins may play an important role in development of S. gordonii-A. naeslundii communities in early dental plaque. Understanding these adhesin proteins will aid investigations of complex microbial communities that characterize periodontal diseases.

Indexed as

ActinomycesAdhesins, BacterialBacterial AdhesionDental PlaqueEcologyHumansLectinsMutationProtein BindingStreptococcusAdhesins, BacterialLectinssalivary agglutinin receptor, StreptocococcusSspA protein, bacteria

Identifiers

PMID11705927
PMCPMC98841
OpenAlexW2119459276

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.