Evidence map›Paper›PMID 20833818›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2010

Inducible expression eliminates the fitness cost of vancomycin resistance in enterococci.

Marie-Laure Foucault, Florence Depardieu, Patrice Courvalin, Catherine Grillot-Courvalin

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed
5.5field-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

62 citing papers in PubMed, 122 citations in OpenAlex.

  1. Trial
  2. Pairwise Growth Dynamics of EnvironmentalAntibiotics (Basel, Switzerland) · 2026
    Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Vancomycin Resistance inMicroorganisms · 2022
    Review
  8. Article
  9. Article
  10. Amplification of the ChromosomalMicrobiology spectrum · 2022
    Article
  11. Review
  12. Multidrug-Resistant Bacteria in the Community: An Update.Infectious disease clinics of North America · 2020
    Review
  13. Emergence ofAntibiotics (Basel, Switzerland) · 2020
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review

2 more citing papers are in PubMed but not listed here.

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

4 authors at 1 institution in 1 country.

Marie-Laure FoucaultUnité des Agents Antibactériens, Institut Pasteur, 75724 Paris Cedex 15, France.
Florence Depardieu
Patrice Courvalin
Catherine Grillot-Courvalin
Institut Pasteur · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Inducible vancomycin resistance in enterococci is due to a sophisticated mechanism that combines synthesis of cell wall peptidoglycan precursors with low affinity for glycopeptides and elimination of the normal target precursors. Although this dual mechanism, which involves seven genes organized in two operons, is predicted to have a high fitness cost, resistant enterococci have disseminated worldwide. We have evaluated the biological cost of VanB-type resistance due to acquisition of conjugative transposon Tn1549 in Enterococcus faecium and Enterococcus faecalis. Because fitness was dependent on the integration site of Tn1549, an isogenic set of E. faecalis was constructed to determine the cost of inducible or constitutive expression of resistance or of carriage of Tn1549. A luciferase gene was inserted in the integrase gene of the transposon to allow differential quantification of the strains in cocultures and in the digestive tract of gnotobiotic mice. Both in vitro and in vivo, carriage of inactivated or inducible Tn1549 had no cost for the host in the absence of induction by vancomycin. In contrast, induced or constitutively resistant strains not only had reduced fitness but were severely impaired in colonization ability and dissemination among mice. These data indicate that tight regulation of resistance expression drastically reduces the biological cost associated with vancomycin resistance in Enterococcus spp. and accounts for the widespread dissemination of these strains. Our findings are in agreement with the observation that regulation of expression is common in horizontally acquired resistance and represents an efficient evolutionary pathway for resistance determinants to become selectively neutral.

Indexed as

DNA Transposable ElementsAnimalsAnti-Bacterial AgentsBacterial ProteinsEnterococcus faecalisEnterococcus faeciumMiceMice, Inbred C3HTranscription, GeneticVancomycinVancomycin ResistanceAnti-Bacterial AgentsBacterial ProteinsDNA Transposable ElementsVanB protein, EnterococcusVancomycin

Identifiers

PMID20833818
PMCPMC2947908
OpenAlexW2079901010

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.