Evidence map›Paper›PMID 21992484›Full record

ArticleGut pathogens2011

Comparative analyses of Campylobacter concisus strains reveal the genome of the reference strain BAA-1457 is not representative of the species.

Nadeem O Kaakoush, Nandan P Deshpande, Marc R Wilkins, Mark J Raftery, Karolina Janitz, Hazel Mitchell

Open access · goldAbstract read
In one paragraph

Article in Gut pathogens, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
5.5field-weighted citation impact, top 5% 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

15 citing papers in PubMed, 27 citations in OpenAlex.

  1. Pathogenomics of EmergingClinical microbiology reviews · 2019
    Review
  2. Review
  3. Article
  4. Article
  5. Article
  6. The Clinical Importance ofFrontiers in cellular and infection microbiology · 2018
    Review
  7. Complete Genome Sequence ofGenome announcements · 2017
    Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Campylobacter concisus - A new player in intestinal disease.Frontiers in cellular and infection microbiology · 2012
    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

6 authors at 1 institution in 1 country.

Nadeem O KaakoushSchool of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW 2052, Australia. H.Mitchell@unsw.edu.au.
Nandan P Deshpande
Marc R Wilkins
Mark J Raftery
Karolina Janitz
Hazel Mitchell
UNSW Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSeveral studies have shown that significant genotypic heterogeneity exists among Campylobacter concisus strains. Recently, the genome of C. concisus UNSWCD, isolated from a patient with Crohn's disease, was sequenced.

resultsIn this study, comparative analyses were performed between strain UNSWCD and BAA-1457, isolated from a patient with acute gastroenteritis. Searches between C. concisus UNSWCD and BAA-1457 showed that 76% of genes were homologues, whereas those between C. jejuni strains showed 90-91% to be homologues, indicating substantial variation exists within these two C. concisus genomes. More specific bidirectional homology searches identified 1593 genes that are shared between these strains, and 115 and 281 genes unique to UNSWCD and BAA-1457, respectively. Significantly, differences in the type of flagellin glycosylation pathways between the two strains were identified and confirmed by PCR. The protein profiles of UNSWCD, BAA-1457 and a further six strains of C. concisus were compared and analyzed bioinformatically, and this differentiated the strains into four clades. BAA-1457 was found to be highly divergent (average similarity: 56.8%) from the other seven strains (mean average similarity ± standard deviation: 64.7 ± 1.7%). Furthermore, searches for homologues of the 1593 proteins found to be common between UNSWCD and BAA-1457 were conducted against all available bacterial genomes, and 18 proteins were found to be unique to C. concisus, of which 6 were predicted to be secreted, and may represent good markers for detection of this species.

conclusionsThis study has elucidated several features that may be responsible for the heterogeneity that exists among C. concisus strains, and has determined that the strain BAA-1457 is genetically atypical to other C. concisus strains and is not a good candidate reference strain.

Identifiers

PMID21992484
PMCPMC3219677
OpenAlexW2161371199

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.