Evidence map›Paper›PMID 22809092›Full record

ArticleFEMS immunology and medical microbiology2012

Role of Vpma phase variation in Mycoplasma agalactiae pathogenesis.

Rohini Chopra-Dewasthaly, Martina Baumgartner, Erika Gamper, Carmen Innerebner, Martina Zimmermann, Franz Schilcher, Alexander Tichy, Petra Winter, Wolfgang Jechlinger, Renate Rosengarten and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in FEMS immunology and medical microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.0field-weighted citation impact, top 16% 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

17 citing papers in PubMed, 29 citations in OpenAlex.

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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

11 authors at 1 institution in 1 country.

Rohini Chopra-DewasthalyInstitute of Bacteriology, Mycology and Hygiene, Department of Pathobiology, University of Veterinary Medicine, Vienna, Austria. rohini.chopra-dewasthaly@vetmeduni.ac.at
Martina Baumgartner
Erika Gamper
Carmen Innerebner
Martina Zimmermann
Franz Schilcher
Alexander Tichy
Petra Winter
Wolfgang Jechlinger
Renate Rosengarten
Joachim Spergser
University of Veterinary Medicine Vienna · AT

Funding

Austrian Science Fund FWF P 21796Austrian Science Fund FWF P 23595
6 · The paper itself

Abstract

Compared with other bacterial pathogens, the molecular mechanisms of mycoplasma pathogenicity are largely unknown. Several studies in the past have shown that pathogenic mycoplasmas are equipped with sophisticated genetic systems that allow them to undergo high-frequency surface antigenic variations. Although never clearly proven, these variable mycoplasma surface components are often implicated in host immune evasion and adaptation. Vpma surface lipoproteins of the ruminant pathogen Mycoplasma agalactiae are encoded on a genomic pathogenicity island-like locus and are considered as one of the well-characterized model systems of mycoplasma surface antigenic variation. The present study assesses the role of these phase-variable Vpmas in the molecular pathogenesis of M. agalactiae by testing the wild-type strain PG2 in comparison with the xer1-disrupted Vpma 'phase-locked' mutants in sheep infection models. The data clearly illustrate that although Xer1 recombinase is not a virulence factor of M. agalactiae and Vpma phase variation is not necessary for establishing an infection, it might critically influence the survival and persistence of the pathogen under natural field conditions, mainly due to a better capacity for dissemination and evoking systemic responses. This is the first study where mycoplasma 'phase-locked' mutants are tested in vivo to elucidate the role of phase variation during infection.

Indexed as

Antigenic VariationAnimalsDisease Models, AnimalGenomic IslandsLipoproteinsMembrane ProteinsMutagenesis, InsertionalMutationMycoplasma agalactiaeMycoplasma InfectionsSheepSheep DiseasesVirulenceLipoproteinsMembrane Proteins

Identifiers

PMID22809092
PMCPMC4510919
OpenAlexW1963533515

What OpenQuestion holds

Textmetadata
LicenceTDM
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.