Evidence map›Paper›PMID 28873002›Full record

ArticleVirulence2018

Reduced virulence of a pseudorabies virus isolate from wild boar origin in domestic pigs correlates with hampered visceral spread and age-dependent reduced neuroinvasive capacity.

Sara Verpoest, Valerie Redant, Ann Brigitte Cay, Herman Favoreel, Nick De Regge

Open access · goldAbstract read
In one paragraph

Article in Virulence, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.9field-weighted citation impact, top 25% 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

6 citing papers in PubMed, 13 citations in OpenAlex.

  1. Review
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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.

Sara Verpoesta Operational Direction Viral Diseases, CODA-CERVA , Ukkel , Belgium.
Valerie Redanta Operational Direction Viral Diseases, CODA-CERVA , Ukkel , Belgium.
Ann Brigitte Caya Operational Direction Viral Diseases, CODA-CERVA , Ukkel , Belgium.
Herman Favoreelb Department of Virology, Immunology and Parasitology , Faculty of Veterinary Medicine, Ghent University , Merelbeke , Belgium.
Nick De Reggea Operational Direction Viral Diseases, CODA-CERVA , Ukkel , Belgium.
Veterinary and Agrochemical Research Centre · BEGhent University · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Morbidity and mortality associated with pseudorabies virus (PRV) infection are dependent on the age of the pig and the virulence of the strain. PRV strains circulating in wild boar are considered to be low virulent, but no mechanistic explanation for their reduced virulence is available. Here infection of 2- and 15-week-old domestic pigs with the PRV wild boar strain BEL24043 did not induce clinical symptoms in 15-week-old pigs, but resulted in important neurological and respiratory disease in 2-week-old piglets. A detailed study of the (neuro) pathogenesis and associated cytokine mRNA expression showed that the reduced virulence of the wild boar strain, compared to what was previously reported for the virulent domestic NIA3 strain, is due to a severely hampered spread to visceral organs in pigs of both age categories and to an efficient suppression of viral replication at primary replication sites of 15-week-old pigs and to a lesser extent in those of 2-week-old piglets. The age-dependent difference in induced symptoms seems to be due to an immature development state of the immune and/or nervous system in 2-week-old pigs. An extensive viral replication associated with a robust expression of cytokine-related mRNA was found in the olfactory bulb of 2-week-old piglets, correlating with observed neurological disease. Neuroinvasion also occurred via the trigeminal route in 2-week-old pigs, but viral replication was efficiently suppressed in the trigeminal ganglion in the presence of a moderate induction of cytokine-related mRNA. Viral replication in the peripheral and central nervous system of 15-week-old pigs was limited and efficiently suppressed.

Indexed as

Age FactorsAnimalsAntibodies, ViralCytokinesDNA, ViralHerpesvirus 1, SuidNervous SystemPseudorabiesRNA, MessengerSwineSwine DiseasesViral Envelope ProteinsViral TropismVirulenceVirus ReplicationAntibodies, ViralCytokinesDNA, ViralRNA, MessengerViral Envelope Proteinsneuroinvasionolfactory bulbpathogenesispseudorabies virusvirulencewild boar

Identifiers

PMID28873002
PMCPMC5955469
OpenAlexW2753011782

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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.