Evidence map›Paper›PMID 23873912›Full record

ArticleJournal of bacteriology2013

Gene content and diversity of the loci encoding biosynthesis of capsular polysaccharides of the 15 serovar reference strains of Haemophilus parasuis.

Kate J Howell, Lucy A Weinert, Shi-Lu Luan, Sarah E Peters, Roy R Chaudhuri, David Harris, Oystein Angen, Virginia Aragon, Julian Parkhill, Paul R Langford and 5 more

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 19% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 75 citations in OpenAlex.

  1. Pooled it
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  9. Complete genome forMicrobial genomics · 2021
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  15. Association betweenPeerJ · 2019
    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

15 authors at 7 institutions in 3 countries.

Kate J HowellDepartment of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom. kjh52@cam.ac.uk
Lucy A Weinert
Shi-Lu Luan
Sarah E Peters
Roy R Chaudhuri
David Harris
Oystein Angen
Virginia Aragon
Julian Parkhill
Paul R Langford
Andrew N Rycroft
Brendan W Wren
Alexander W Tucker
Duncan J Maskell
BRaDP1T Consortium
University of Cambridge · GBWellcome Sanger Institute · GBCentre de Recerca en Sanitat Animal · ESImperial College London · GBNorwegian Veterinary Institute · NORoyal Veterinary College · GBUniversity of London · GB

Funding

Biotechnology and Biological Sciences Research Council BB/G003203/1Biotechnology and Biological Sciences Research Council BB/G018553/1Biotechnology and Biological Sciences Research Council BB/G019177/1Biotechnology and Biological Sciences Research Council BB/G019274/1Biotechnology and Biological Sciences Research Council BB/G020744/1
6 · The paper itself

Abstract

Haemophilus parasuis is the causative agent of Glässer's disease, a systemic disease of pigs, and is also associated with pneumonia. H. parasuis can be classified into 15 different serovars. Here we report, from the 15 serotyping reference strains, the DNA sequences of the loci containing genes for the biosynthesis of the group 1 capsular polysaccharides, which are potential virulence factors of this bacterium. We contend that these loci contain genes for polysaccharide capsule structures, and not a lipopolysaccharide O antigen, supported by the fact that they contain genes such as wza, wzb, and wzc, which are associated with the export of polysaccharide capsules in the current capsule classification system. A conserved region at the 3' end of the locus, containing the wza, ptp, wzs, and iscR genes, is consistent with the characteristic export region 1 of the model group 1 capsule locus. A potential serovar-specific region (region 2) has been found by comparing the predicted coding sequences (CDSs) in all 15 loci for synteny and homology. The region is unique to each reference strain with the exception of those in serovars 5 and 12, which are identical in terms of gene content. The identification and characterization of this locus among the 15 serovars is the first step in understanding the genetic, molecular, and structural bases of serovar specificity in this poorly studied but important pathogen and opens up the possibility of developing an improved molecular serotyping system, which would greatly assist diagnosis and control of Glässer's disease.

Indexed as

Genetic VariationAnimalsBacterial ProteinsBacterial Typing TechniquesHaemophilus InfectionsHaemophilus parasuisPolysaccharides, BacterialSequence Analysis, DNASerotypingSpecies SpecificitySus scrofaSwineSwine DiseasesVirulenceVirulence FactorsBacterial ProteinsPolysaccharides, BacterialVirulence Factors

Identifiers

PMID23873912
PMCPMC3754760
OpenAlexW1971891503

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.