Evidence map›Paper›PMID 24466152›Full record

ArticlePloS one2014

Evaluation of the prevalence and production of Escherichia coli common pilus among avian pathogenic E. coli and its role in virulence.

Alyssa K Stacy, Natalie M Mitchell, Jacob T Maddux, Miguel A De la Cruz, Laura Durán, Jorge A Girón, Roy Curtiss, Melha Mellata

Abstract readEvaluation Study
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
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

23 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Comparative genomic analysis of uropathogenicFrontiers in microbiology · 2023
    Article
  5. Article
  6. Article
  7. Article
  8. Article
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  12. Article
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  14. Article
  15. Article
  16. Article
  17. Evaluation of Recombinant AttenuatedFrontiers in immunology · 2017
    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

8 authors.

Alyssa K StacyThe Biodesign Institute, Arizona State University, Tempe, Arizona, United States of America ; School of Life Sciences, Arizona State University, Tempe, Arizona, United States of America.
Natalie M MitchellThe Biodesign Institute, Arizona State University, Tempe, Arizona, United States of America.
Jacob T MadduxThe Biodesign Institute, Arizona State University, Tempe, Arizona, United States of America.
Miguel A De la CruzUniversity of Florida, Gainesville, Florida, United States of America.
Laura DuránUniversity of Florida, Gainesville, Florida, United States of America.
Jorge A GirónUniversity of Florida, Gainesville, Florida, United States of America.
Roy CurtissThe Biodesign Institute, Arizona State University, Tempe, Arizona, United States of America ; School of Life Sciences, Arizona State University, Tempe, Arizona, United States of America.
Melha MellataThe Biodesign Institute, Arizona State University, Tempe, Arizona, United States of America.

Funding

YagZ Pilus Adhesin of Attaching and Effacing E. coliR01AI066012 · NIAID · UNIVERSITY OF FLORIDA · PI GIRON, JORGE A · 2006 to 2010
$1.6M
A novel Salmonella vaccine to protect against extra intestinal pathogenic E. coliR21AI090416 · NIAID · ARIZONA STATE UNIVERSITY-TEMPE CAMPUS · PI MELLATA, MELHA · 2010 to 2011
$417k
NIAID NIH HHS AI090416NIAID NIH HHS AI66012NIAID NIH HHS R01 AI066012NIAID NIH HHS R21 AI090416
6 · The paper itself

Abstract

Avian pathogenic Escherichia coli (APEC) strains cause systemic and localized infections in poultry, jointly termed colibacillosis. Avian colibacillosis is responsible for significant economic losses to the poultry industry due to disease treatment, decrease in growth rate and egg production, and mortality. APEC are also considered a potential zoonotic risk for humans. Fully elucidating the virulence and zoonotic potential of APEC is key for designing successful strategies against their infections and their transmission. Herein, we investigated the prevalence of a newly discovered E. coli common pilus (ECP) for the subunit protein of the ECP pilus (ecpA) and ECP expression amongst APEC strains as well as the role of ECP in virulence. A PCR-based ecpA survey of a collection of 167 APEC strains has shown that 76% (127/167) were ecpA+. An immunofluorescence assay using anti-EcpA antibodies, revealed that among the ecpA+ strains, 37.8% (48/127) expressed ECP when grown in DMEM +0.5% Mannose in contact with HeLa cells at 37°C and/or in biofilm at 28°C; 35.4% (17/48) expressed ECP in both conditions and 64.6% (31/48) expressed ECP in biofilm only. We determined that the ecp operon in the APEC strain χ7122 (ecpA+, ECP-) was not truncated; the failure to detect ECP in some strains possessing non-truncated ecp genes might be attributed to differential regulatory mechanisms between strains that respond to specific environmental signals. To evaluate the role of ECP in the virulence of APEC, we generated ecpA and/or ecpD-deficient mutants from the strain χ7503 (ecpA+, ECP+). Deletion of ecpA and/or ecpD abolished ECP synthesis and expression, and reduced biofilm formation and motility in vitro and virulence in vivo. All together our data show that ecpA is highly prevalent among APEC isolates and its expression could be differentially regulated in these strains, and that ECP plays a role in the virulence of APEC.

Indexed as

AnimalsBlotting, WesternCell MovementChickensDNA, BacterialEscherichia coliEscherichia coli InfectionsEscherichia coli ProteinsFimbriae, BacterialHeLa CellsHumansPhenotypePolymerase Chain ReactionPoultry DiseasesPrevalenceVirulenceDNA, BacterialEscherichia coli ProteinsVirulence Factors

Identifiers

PMID24466152
PMCPMC3900561

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.