Evidence map›Paper›PMID 21041492›Full record

ArticleInfection and immunity2011

Structural dissection and in vivo effectiveness of a peptide inhibitor of Porphyromonas gingivalis adherence to Streptococcus gordonii.

Carlo Amorin Daep, Elizabeth A Novak, Richard J Lamont, Donald R Demuth

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 99 papers.

0numbers the graph read from it
0cells of the map it votes in
99citing papers in PubMed
3.7field-weighted citation impact, top 7% 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

99 citing papers in PubMed, 137 citations in OpenAlex.

  1. Article
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  6. Tyrosine phosphorylation coupling of one-carbon metabolism and virulence in an endogenous pathogen.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  7. The role of salivary metabolomics in chronic periodontitis: bridging oral and systemic diseases.Metabolomics : Official journal of the Metabolomic Society · 2025
    Review
  8. Phage-based biocontrol ofApplied and environmental microbiology · 2024
    Article
  9. One-carbon metabolism and microbial pathogenicity.Molecular oral microbiology · 2024
    Review
  10. Insights into the enigma of oral streptococci in carcinogenesis.Microbiology and molecular biology reviews : MMBR · 2024
    Review
  11. Review
  12. Review
  13. The Antimicrobial Potential of the Hop (Pharmaceuticals (Basel, Switzerland) · 2024
    Article
  14. Oral streptococci: modulators of health and disease.Frontiers in cellular and infection microbiology · 2024
    Review
  15. Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Review

39 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

4 authors at 2 institutions in 1 country.

Carlo Amorin DaepDepartment of Periodontics, Endodontics and Dental Hygiene, University of Louisville School of Dentistry, 501 South Preston Street, Louisville, KY 40292, USA.
Elizabeth A Novak
Richard J Lamont
Donald R Demuth
University of Louisville · USUniversity of Florida · US

Funding

MOLECULAR ASPECTS OF ORAL PLAQUE FORMATIONR01DE012505 · NIDCR · UNIVERSITY OF WASHINGTON · PI Richard J Lamont, JAN S POTEMPA · 1998 to 2026
$9.5M
NIDCR NIH HHS R01 DE012505NIDCR NIH HHS R01DE12505
6 · The paper itself

Abstract

The interaction of the minor fimbrial antigen (Mfa) with streptococcal antigen I/II (e.g., SspB) facilitates colonization of the dental biofilm by Porphyromonas gingivalis. We previously showed that a 27-mer peptide derived from SspB (designated BAR) resembles the nuclear receptor (NR) box protein-protein interacting domain and potently inhibits this interaction in vitro. Here, we show that the EXXP motif upstream of the NR core α-helix contributes to the Mfa-SspB interaction and that BAR reduces P. gingivalis colonization and alveolar bone loss in vivo in a murine model of periodontitis. Substitution of Gln for Pro(1171) or Glu(1168) increased the α-helicity of BAR and reduced its inhibitory activity in vitro by 10-fold and 2-fold, respectively. To determine if BAR prevents P. gingivalis infection in vivo, mice were first infected with Streptococcus gordonii and then challenged with P. gingivalis in the absence and presence of BAR. Animals that were infected with either 10(9) CFU of S. gordonii DL-1 or 10(7) CFU of P. gingivalis 33277 did not show a statistically significant increase in alveolar bone resorption over sham-infected controls. However, infection with 10(9) CFU of S. gordonii followed by 10(7) CFU of P. gingivalis induced significantly greater bone loss (P < 0.01) than sham infection or infection of mice with either organism alone. S. gordonii-infected mice that were subsequently challenged with 10(7) CFU of P. gingivalis in the presence of BAR exhibited levels of bone resorption similar to those of sham-infected animals. Together, these results indicate that both EXXP and the NR box are important for the Mfa-SspB interaction and that BAR peptide represents a potential therapeutic that may limit colonization of the oral cavity by P. gingivalis.

Indexed as

Amino Acid SequenceAnimalsBacterial AdhesionBacteroidaceae InfectionsBiofilmsCells, CulturedEpithelial CellsGingivaHumansMiceMice, Inbred BALB CPeptidesPeriodontitisPorphyromonas gingivalisSpecific Pathogen-Free OrganismsStreptococcal InfectionsPeptides

Identifiers

PMID21041492
PMCPMC3019905
OpenAlexW2164091113

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.