Evidence map›Paper›PMID 23302788›Full record

ArticleVirulence2013

Multi-functional analysis of Klebsiella pneumoniae fimbrial types in adherence and biofilm formation.

María D Alcántar-Curiel, Dana Blackburn, Zeus Saldaña, Catalina Gayosso-Vázquez, Nicole M Iovine, Miguel A De la Cruz, Jorge A Girón

Open access · goldAbstract read
In one paragraph

Article in Virulence, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 98 papers.

0numbers the graph read from it
0cells of the map it votes in
98citing papers in PubMed
1.7field-weighted citation impact, top 18% 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

98 citing papers in PubMed, 173 citations in OpenAlex.

  1. Plasmid encodedBiofilm · 2026
    Article
  2. Article
  3. Article
  4. Biofilm-Forming Capacity andAntibiotics (Basel, Switzerland) · 2026
    Article
  5. Review
  6. Article
  7. Hydrocarbon degradation and genomic insights ofFrontiers in microbiology · 2026
    Article
  8. Article
  9. Genetic features of blaBMC microbiology · 2025
    Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Genetic diversity, drug resistance, and biofilm formation in Klebsiella pneumoniae associated with nosocomial infection in Pelotas, RS, Brazil.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2025
    Article
  20. Article

38 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

7 authors at 4 institutions in 3 countries.

María D Alcántar-CurielDepartamento de Medicina Experimental, Facultad de Medicina, Universidad Nacional Autónoma de México, México D.F., México. alcantar@unam.mx
Dana Blackburn
Zeus Saldaña
Catalina Gayosso-Vázquez
Nicole M Iovine
Miguel A De la Cruz
Jorge A Girón
University of Florida · USFlorida College · USMedicina · PLUniversidad Nacional Autónoma de México · MX

Funding

YagZ Pilus Adhesin of Attaching and Effacing E. coliR01AI066012 · NIAID · UNIVERSITY OF FLORIDA · PI GIRON, JORGE A · 2006 to 2010
$1.6M
NIAID NIH HHS AI66012NIAID NIH HHS R01 AI066012
6 · The paper itself

Abstract

Klebsiella pneumoniae is an opportunistic pathogen frequently associated with nosocomially acquired infections. Host cell adherence and biofilm formation of K. pneumoniae isolates is mediated by type 1 (T1P) and type 3 (MR/K) pili whose major fimbrial subunits are encoded by the fimA and mrkA genes, respectively. The E. coli common pilus (ECP) is an adhesive structure produced by all E. coli pathogroups and a homolog of the ecpABCDE operon is present in the K. pneumoniae genome. In this study, we aimed to determine the prevalence of these three fimbrial genes among a collection of 69 clinical and environmental K. pneumoniae strains and to establish a correlation with fimbrial production during cell adherence and biofilm formation. The PCR-based survey demonstrated that 96% of the K. pneumoniae strains contained ecpA and 94% of these strains produced ECP during adhesion to cultured epithelial cells. Eighty percent of the strains forming biofilms on glass produced ECP, suggesting that ECP is required, at least in vitro, for expression of these phenotypes. The fim operon was found in 100% of the strains and T1P was detected in 96% of these strains. While all the strains examined contained mrkA, only 57% of them produced MR/K fimbriae, alone or together with ECP. In summary, this study highlights the ability of K. pneumoniae strains to produce ECP, which may represent a new important adhesive structure of this organism. Further, it defines the multi-fimbrial nature of the interaction of this nosocomial pathogen with host epithelial cells and inert surfaces.

Indexed as

Bacterial AdhesionBiofilmsDNA, BacterialEnvironmental MicrobiologyEpithelial CellsEscherichia coliFimbriae, BacterialGenes, BacterialHeLa CellsHumansKlebsiella InfectionsKlebsiella pneumoniaeMicroscopy, ElectronMicroscopy, FluorescencePolymerase Chain ReactionDNA, BacterialadherencebiofilmsE. coli common pilusKlebsiella pneumoniaeK. oxytoca

Identifiers

PMID23302788
PMCPMC3654611
OpenAlexW2004112055

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.