Evidence map›Paper›PMID 19858300›Full record

ArticleInfection and immunity2010

Characterization of virulence plasmid diversity among Clostridium perfringens type B isolates.

Sameera Sayeed, Jihong Li, Bruce A McClane

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
3.3field-weighted citation impact, top 8% 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

33 citing papers in PubMed, 71 citations in OpenAlex.

  1. Article
  2. Article
  3. Large Clostridial Toxins: Mechanisms and Roles in Disease.Microbiology and molecular biology reviews : MMBR · 2021
    Review
  4. Vaccination against pathogenic clostridia in animals: a review.Tropical animal health and production · 2021
    Review
  5. Review
  6. Article
  7. Enterotoxic Clostridia:Microbiology spectrum · 2018
    Article
  8. Review
  9. Review
  10. mBio · 2018
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Clostridium perfringens type A-E toxin plasmids.Research in microbiology · 2015
    Review
  16. Article
  17. Review
  18. Article
  19. Review
  20. Review
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

3 authors at 2 institutions in 2 countries.

Sameera SayeedDepartment of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261, USA.
Jihong Li
Bruce A McClane
University of Pittsburgh · USAustralian Research Council · AU

Funding

Clostridium perfringens Type B-D Virulence PlasmidsR01AI056177 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI MC CLANE, BRUCE A, ROOD, JULIAN · 2003 to 2013
$3.8M
NIAID NIH HHS AI056177-06NIAID NIH HHS R01 AI056177
6 · The paper itself

Abstract

The important veterinary pathogen Clostridium perfringens type B is unique for producing the two most lethal C. perfringens toxins, i.e., epsilon-toxin and beta-toxin. Our recent study (K. Miyamoto, J. Li, S. Sayeed, S. Akimoto, and B. A. McClane, J. Bacteriol. 190:7178-7188, 2008) showed that most, if not all, type B isolates carry a 65-kb epsilon-toxin-encoding plasmid. However, this epsilon-toxin plasmid did not possess the cpb gene encoding beta-toxin, suggesting that type B isolates carry at least one additional virulence plasmid. Therefore, the current study used Southern blotting of pulsed-field gels to localize the cpb gene to approximately 90-kb plasmids in most type B isolates, although a few isolates carried a approximately 65-kb cpb plasmid distinct from their etx plasmid. Overlapping PCR analysis then showed that the gene encoding the recently discovered TpeL toxin is located approximately 3 kb downstream of the plasmid-borne cpb gene. As shown earlier for their epsilon-toxin-encoding plasmids, the beta-toxin-encoding plasmids of type B isolates were found to carry a tcp locus, suggesting that they are conjugative. Additionally, IS1151-like sequences were identified upstream of the cpb gene in type B isolates. These IS1151-like sequences may mobilize the cpb gene based upon detection of possible cpb-containing circular transposition intermediates. Most type B isolates also possessed a third virulence plasmid that carries genes encoding urease and lambda-toxin. Collectively, these findings suggest that type B isolates are among the most plasmid dependent of all C. perfringens isolates for virulence, as they usually carry three potential virulence plasmids.

Indexed as

Genetic VariationBacterial ProteinsBacterial ToxinsClostridium perfringensGene Expression ProfilingGene Expression Regulation, BacterialPlasmidsVirulenceBacterial ProteinsBacterial Toxins

Identifiers

PMID19858300
PMCPMC2798229
OpenAlexW2145584773

What OpenQuestion holds

Textmetadata
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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.