Evidence map›Paper›PMID 12933834›Full record

ArticleInfection and immunity2003

ZmpB, a novel virulence factor of Streptococcus pneumoniae that induces tumor necrosis factor alpha production in the respiratory tract.

C E Blue, G K Paterson, A R Kerr, M Bergé, J P Claverys, T J Mitchell

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
3.6field-weighted citation impact, top 7% 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, 75 citations in OpenAlex.

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  12. An in vivo atlas of host-pathogen transcriptomes duringProceedings of the National Academy of Sciences of the United States of America · 2020
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  13. Article
  14. The Role of Pneumococcal Virulence Factors in Ocular Infectious Diseases.Interdisciplinary perspectives on infectious diseases · 2018
    Review
  15. Article
  16. Article
  17. Article
  18. 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

6 authors at 3 institutions in 2 countries.

C E BlueDivision of Infection and Immunity, Institute of Biomedical and Life Sciences, University of Glasgow, Scotland, United Kingdom.
G K Paterson
A R Kerr
M Bergé
J P Claverys
T J Mitchell
University of Glasgow · GBCentre National de la Recherche Scientifique · FRUniversité Toulouse III - Paul Sabatier · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Inflammation is a prominent feature of Streptococcus pneumoniae infection in both humans and animal models. Indeed, an intense host immune response to infection is thought to contribute significantly to the pathology of pneumococcal pneumonia and meningitis. Previously, induction of the inflammatory response following infection with S. pneumoniae has been attributed to certain cell wall constituents and the toxin pneumolysin. Here we present data implicating a putative zinc metalloprotease, ZmpB, as having a role in inflammation. Null mutations were created in the zmpB gene of the virulent serotype 2 strain D39 and analyzed in a murine model of infection. Isogenic mutants were attenuated in pneumonia and septicemia models of infection, as determined by levels of bacteremia and murine survival. Mutants were not attenuated in colonization of murine airways or lung tissue. Examination of cytokine profiles within the lung tissue revealed significantly lower levels of the proinflammatory cytokine tumor necrosis factor alpha following challenge with the Delta zmpB mutant (Delta 739). These data identify ZmpB as a novel virulence factor capable of inducing inflammation in the lower respiratory tract. The possibility that ZmpB was involved in inhibition of complement activity was examined, but the data indicated that ZmpB does not have a significant effect on this important host defense. The regulation of ZmpB by a two-component system (TCS09) located immediately upstream of the zmpB gene was examined. TCS09 was not required for the expression of zmpB during exponential growth in vitro.

Indexed as

AnimalsBacteremiaComplement C3FemaleGene Expression Regulation, BacterialGenes, BacterialHemolysisHumansIn Vitro TechniquesMaleMetalloendopeptidasesMiceMice, Inbred C57BLMice, KnockoutMutationPneumococcal InfectionsComplement C3MetalloendopeptidasesTumor Necrosis Factor-alphaZmpB enzyme

Identifiers

PMID12933834
PMCPMC187332
OpenAlexW2140946555

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.