Evidence map›Paper›PMID 20023016›Full record

ArticleJournal of bacteriology2010

Evidence for rare capsular switching in Streptococcus agalactiae.

Elisabete Raquel Martins, José Melo-Cristino, Mário Ramirez

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
4.3field-weighted citation impact, top 6% 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

46 citing papers in PubMed, 71 citations in OpenAlex.

  1. Review
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  4. Article
  5. A Comparative Analysis of Molecular Epidemiology and Antibiotic Resistance in Group B Streptococcus Isolated From Invasive and Noninvasive Adult Cases in Daejeon, South Korea.The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2025
    Article
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  7. Emergence of High-Level Gentamicin Resistance inAntibiotics (Basel, Switzerland) · 2024
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  8. Review
  9. Article
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  12. Alterations in GenesPathogens (Basel, Switzerland) · 2022
    Article
  13. How GBS Got Its Hump: Genomic Analysis of Group BPathogens (Basel, Switzerland) · 2022
    Article
  14. Characteristics ofMicrobiology spectrum · 2022
    Article
  15. Article
  16. Phylogeny, recombination, and invasiveness of group B Streptococcus revealed by genomic comparisons of its global strains.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2021
    Article
  17. Multidrug Resistance and Molecular Characterization ofFrontiers in cellular and infection microbiology · 2021
    Article
  18. Evidence of Common Isolates ofFrontiers in microbiology · 2021
    Article
  19. Article
  20. Article
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 1 institution in 1 country.

Elisabete Raquel MartinsInstituto de Microbiologia, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisbon, Portugal.
José Melo-Cristino
Mário Ramirez
University of Lisbon · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The polysaccharide capsule is a major antigenic factor in Streptococcus agalactiae (Lancefield group B streptococcus [GBS]). Previous observations suggest that exchange of capsular loci is likely to occur rather frequently in GBS, even though GBS is not known to be naturally transformable. We sought to identify and characterize putative capsular switching events, by means of a combination of phenotypic and genotypic methods, including pulsed-field gel electrophoretic profiling, multilocus sequence typing, and surface protein and pilus gene profiling. We show that capsular switching by horizontal gene transfer is not as frequent as previously suggested. Serotyping errors may be the main reason behind the overestimation of capsule switching, since phenotypic techniques are prone to errors of interpretation. The identified putative capsular transformants involved the acquisition of the entire capsular locus and were not restricted to the serotype-specific central genes, the previously suggested main mechanism underlying capsular switching. Our data, while questioning the frequency of capsular switching, provide clear evidence for in vivo capsular transformation in S. agalactiae, which may be of critical importance in planning future vaccination strategies against this pathogen.

Indexed as

Recombination, GeneticAdultBacterial CapsulesBacterial Typing TechniquesCluster AnalysisDNA, BacterialDNA FingerprintingElectrophoresis, Gel, Pulsed-FieldHumansInfant, NewbornMolecular Sequence DataSequence Analysis, DNASerotypingStreptococcal InfectionsStreptococcus agalactiaeTransformation, BacterialDNA, Bacterial

Identifiers

PMID20023016
PMCPMC2820851
OpenAlexW2138927281

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.