Evidence map›Paper›PMID 22240397›Full record

Trial reportVeterinary research2012

Type IV fimbrial subunit protein ApfA contributes to protection against porcine pleuropneumonia.

Lenka Sadilkova, Jiri Nepereny, Vladimir Vrzal, Peter Sebo, Radim Osicka

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Veterinary research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.5field-weighted citation impact, top 12% 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

15 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Article
  3. Review of advanced research on swineFrontiers in immunology · 2025
    Review
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  11. Immunoprotective Efficacy of SixFrontiers in microbiology · 2016
    Article
  12. Article
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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

5 authors at 2 institutions in 1 country.

Lenka SadilkovaInstitute of Microbiology of the Academy of Sciences of the Czech Republic, v,v,i,, Videnska 1083, CZ-142 20 Prague, Czech Republic. osicka@biomed.cas.cz.
Jiri Nepereny
Vladimir Vrzal
Peter Sebo
Radim Osicka
Czech Academy of Sciences, Institute of Microbiology · CZBioveta (Czechia) · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Porcine pleuropneumonia caused by Actinobacillus pleuropneumoniae accounts for serious economic losses in the pig farming industry worldwide. We examined here the immunogenicity and protective efficacy of the recombinant type IV fimbrial subunit protein ApfA as a single antigen vaccine against pleuropneumonia, or as a component of a multi-antigen preparation comprising five other recombinant antigens derived from key virulence factors of A. pleuropneumoniae (ApxIA, ApxIIA, ApxIIIA, ApxIVA and TbpB). Immunization of pigs with recombinant ApfA alone induced high levels of specific serum antibodies and provided partial protection against challenge with the heterologous A. pleuropneumoniae serotype 9 strain. This protection was higher than that engendered by vaccination with rApxIVA or rTbpB alone and similar to that observed after immunization with the tri-antigen combination of rApxIA, rApxIIA and rApxIIIA. In addition, rApfA improved the vaccination potential of the penta-antigen mixture of rApxIA, rApxIIA, rApxIIIA, rApxIVA and rTbpB proteins, where the hexa-antigen vaccine containing rApfA conferred a high level of protection on pigs against the disease. Moreover, when rApfA was used for vaccination alone or in combination with other antigens, such immunization reduced the number of pigs colonized with the challenge strain. These results indicate that ApfA could be a valuable component of an efficient subunit vaccine for the prevention of porcine pleuropneumonia.

Indexed as

Actinobacillus InfectionsActinobacillus pleuropneumoniaeAdhesins, BacterialAnimalsBacterial VaccinesEscherichia coliExotoxinsFemaleFimbriae, BacterialMaleMolecular Sequence DataPleuropneumoniaPolymerase Chain ReactionRecombinant ProteinsSequence Analysis, DNASwineAdhesins, BacterialBacterial VaccinesExotoxinsRecombinant ProteinsVirulence Factors

Identifiers

PMID22240397
PMCPMC3276438
OpenAlexW2149339070

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.