Evidence map›Paper›PMID 23509151›Full record

ArticleInfection and immunity2013

The fimbrial protein FlfA from Gallibacterium anatis is a virulence factor and vaccine candidate.

Ragnhild J Bager, Barbara Nesta, Susanne E Pors, Marco Soriani, Laura Serino, John D Boyce, Ben Adler, Anders M Bojesen

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
3.1field-weighted citation impact, top 10% 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

28 citing papers in PubMed, 49 citations in OpenAlex.

  1. Trial
  2. Article
  3. Veterinary medicine international · 2026
    Article
  4. Comparative genomics andFrontiers in microbiology · 2026
    Article
  5. Article
  6. Article
  7. Multidrug Resistance ofPathogens (Basel, Switzerland) · 2024
    Article
  8. Antibiotic resistance ofJournal of veterinary research · 2024
    Article
  9. Gallibacterium anatis infection in poultry: a comprehensive review.Tropical animal health and production · 2023
    Review
  10. Article
  11. Article
  12. Article
  13. A putative siderophore receptor ofFrontiers in microbiology · 2022
    Article
  14. Co-Infection ofPathogens (Basel, Switzerland) · 2021
    Article
  15. Article
  16. Antibacterial Activity of Lactic Acid ProducingFrontiers in veterinary science · 2021
    Article
  17. Review
  18. 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

8 authors at 4 institutions in 3 countries.

Ragnhild J BagerDepartment of Veterinary Disease Biology, Faculty of Health Sciences, University of Copenhagen, Frederiksberg C, Denmark.
Barbara Nesta
Susanne E Pors
Marco Soriani
Laura Serino
John D Boyce
Ben Adler
Anders M Bojesen
Novartis (Italy) · ITUniversity of Copenhagen · DKAustralian Research Council · AUMonash University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Gram-negative bacterium Gallibacterium anatis is a major cause of salpingitis and peritonitis in egg-laying chickens, leading to decreased egg production worldwide. Widespread multidrug resistance largely prevents treatment of this organism using traditional antimicrobial agents, while antigenic diversity hampers disease prevention by classical vaccines. Thus, insight into its pathogenesis and knowledge about important virulence factors is urgently required. A key event during the colonization and invasion of mucosal surfaces is adherence, and recently, at least three F17-like fimbrial gene clusters were identified in the genomes of several G. anatis strains. The objective of this study was to characterize the putative F17-like fimbrial subunit protein FlfA from G. anatis 12656-12 and determine its importance for virulence. In vitro expression and surface exposure of FlfA was demonstrated by flow cytometry and immunofluorescence microscopy. The predicted function of FlfA as a fimbrial subunit protein was confirmed by immunogold electron microscopy. An flfA deletion mutant (ΔflfA) was generated in G. anatis 12656-12, and importantly, this mutant was significantly attenuated in the natural chicken host. Furthermore, protection against G. anatis 12656-12 could be induced by immunizing chickens with recombinant FlfA. Finally, in vitro expression of FlfA homologs was observed in a genetically diverse set of G. anatis strains, suggesting the potential of FlfA as a serotype-independent vaccine candidate This is the first study describing a fimbrial subunit protein of G. anatis with a clear potential as a vaccine antigen.

Indexed as

Amino Acid SequenceAnimalsBacterial ProteinsBacterial VaccinesChickensCloning, MolecularFimbriae, BacterialGene DeletionGene Expression Regulation, BacterialMolecular Sequence DataPasteurellaceaePasteurellaceae InfectionsPoultry DiseasesSequence AlignmentVirulence FactorsBacterial ProteinsBacterial VaccinesVirulence Factors

Identifiers

PMID23509151
PMCPMC3676021
OpenAlexW1992920356

What OpenQuestion holds

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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.