Evidence map›Paper›PMID 22053966›Full record

ArticleMolecular oral microbiology2011

Differential expression and adherence of Porphyromonas gingivalis FimA genotypes.

C Zheng, J Wu, H Xie

Abstract readComparative Study
In one paragraph

Article in Molecular oral microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed, 35 citations in OpenAlex.

  1. [Age-Related Changes in the Oral Microbiota].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2026
    Review
  2. Alzheimer's Disease andLife (Basel, Switzerland) · 2025
    Review
  3. Polymicrobial interactions ofJournal of oral microbiology · 2025
    Review
  4. Article
  5. Article
  6. Article
  7. TLR2 Activation byFrontiers in immunology · 2022
    Article
  8. Article
  9. Article
  10. Article
  11. Roles of Porphyromonas gingivalis and its virulence factors in periodontitis.Advances in protein chemistry and structural biology · 2020
    Review
  12. Article
  13. Article
  14. Article
  15. Genetic exchange and reassignment inJournal of oral microbiology · 2018
    Review
  16. Article
  17. Article
  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

3 authors at 1 institution in 1 country.

C ZhengDepartment of Oral Biology, School of Dentistry, Meharry Medical College, Nashville, TN 37208, USA.
J Wu
H Xie
Meharry Medical College · US

Funding

VANDERBILT UNIVERSITY CTSA FOR PEDIATRIC RESEARCHUL1RR024975 · NCRR · VANDERBILT UNIVERSITY · PI BERNARD, GORDON RAPHAEL · 2007 to 2011
$45.7M
Technologies and Resources CoreU54MD007593 · NIMHD · MEHARRY MEDICAL COLLEGE · PI ADUNYAH, SAMUEL EVANS · 2012 to 2018
$24.7M
TECHNOLOGIES AND RESOURCES FOR CORE LABORATORIESU54RR026140 · NCRR · MEHARRY MEDICAL COLLEGE · PI GOODWIN, JEFFREY SHAWN · 2009 to 2011
$12.9M
Identification of a novel signaling network in Porphyromonas gingivalisR21DE020915 · NIDCR · MEHARRY MEDICAL COLLEGE · PI XIE, HUA · 2011 to 2012
$424k
NCRR NIH HHS 1U54RR026140NCRR NIH HHS U54 RR026140NCRR NIH HHS UL1 RR024975NCRR NIH HHS UL1RR024975NIDCR NIH HHS R21 DE020915NIMHD NIH HHS U54 MD007593
6 · The paper itself

Abstract

Porphyromonas gingivalis is a primary pathogen involved in the initiation and progression of adult chronic periodontitis. Its colonization on oral surfaces is a necessary first step leading to infection. FimA, a subunit protein of major (long) fimbriae, is a well-known virulence factor. Based on its nucleotide sequence, FimA is classified into several genotypes. We compared here the transcriptional levels of the fimA gene in several P. gingivalis strains using real-time polymerase chain reaction analysis, fimbrial display on the P. gingivalis surface using transmission electronic microscopy, and the adherence competencies of P. gingivalis strains carrying different types of FimAs towards saliva and Streptococcus gordonii surfaces using mutagenesis analysis. We demonstrated differential expression of each fimA gene in these P. gingivalis strains. A correlation of the transcription level of fimA and binding activity of P. gingivalis was revealed. We show that P. gingivalis strains with genotype I and II of FimA are efficient in interaction with saliva or S. gordonii. This work highlights the important role of FimA type I and II in P. gingivalis attachment to oral surfaces.

Indexed as

AdultBacterial AdhesionBacterial LoadDental PellicleFemaleFimbriae ProteinsGenotypeHumansMicroscopy, Electron, TransmissionMutagenesisMutagenesis, InsertionalPili, SexPorphyromonas gingivalisReal-Time Polymerase Chain ReactionStreptococcus gordoniiTranscription, GeneticFimbriae Proteinsfimbrillin

Identifiers

PMID22053966
PMCPMC4451598
OpenAlexW1771894394

What OpenQuestion holds

Textmetadata
LicenceTDM
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.