Evidence map›Paper›PMID 24022847›Full record

ArticlePathogens and disease2014

Plasmid deficiency in urogenital isolates of Chlamydia trachomatis reduces infectivity and virulence in a mouse model.

Ira M Sigar, Justin H Schripsema, Yibing Wang, Ian N Clarke, Lesley T Cutcliffe, Helena M B Seth-Smith, Nicholas R Thomson, Carina Bjartling, Magnus Unemo, Kenneth Persson and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Pathogens and disease, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
6.1field-weighted citation impact, top 3% 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

40 citing papers in PubMed, 63 citations in OpenAlex.

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  8. Plasmid-mediated virulence inFrontiers in cellular and infection microbiology · 2023
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  9. Genome organization and genomics inFrontiers in cellular and infection microbiology · 2023
    Review
  10. 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

11 authors at 5 institutions in 3 countries.

Ira M SigarMicrobiology and Immunology Department, Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, IL, USA.
Justin H Schripsema
Yibing Wang
Ian N Clarke
Lesley T Cutcliffe
Helena M B Seth-Smith
Nicholas R Thomson
Carina Bjartling
Magnus Unemo
Kenneth Persson
Kyle H Ramsey
Midwestern University · USUniversity of Southampton · GBLund University · SEWellcome Sanger Institute · GBÖrebro University Hospital · SE

Funding

Wellcome TrustWellcome Trust 091296Wellcome Trust 098051
6 · The paper itself

Abstract

We hypothesized that the plasmid of urogenital isolates of Chlamydia trachomatis would modulate infectivity and virulence in a mouse model. To test this hypothesis, we infected female mice in the respiratory or urogenital tract with graded doses of a human urogenital isolate of C. trachomatis, serovar F, possessing the cognate plasmid. For comparison, we inoculated mice with a plasmid-free serovar F isolate. Following urogenital inoculation, the plasmid-free isolate displayed significantly reduced infectivity compared with the wild-type strain with the latter yielding a 17-fold lower infectious dose to yield 50% infection. When inoculated via the respiratory tract, the plasmid-free isolate exhibited reduced infectivity and virulence (as measured by weight change) when compared to the wild-type isolate. Further, differences in infectivity, but not in virulence were observed in a C. trachomatis, serovar E isolate with a deletion within the plasmid coding sequence 1 when compared to a serovar E isolate with no mutations in the plasmid. We conclude that plasmid loss reduces virulence and infectivity in this mouse model. These findings further support a role for the chlamydial plasmid in infectivity and virulence in vivo.

Indexed as

AnimalsChlamydia InfectionsChlamydia trachomatisDisease Models, AnimalFemaleGenome, BacterialMicePlasmidsRespiratory SystemUrogenital SystemVirulenceChlamydiagenomeinfectionmouseplasmidvirulence

Identifiers

PMID24022847
PMCPMC4300952
OpenAlexW2036211620

What OpenQuestion holds

Textmetadata
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.