Evidence map›Paper›PMID 19506057›Full record

ReviewAntimicrobial agents and chemotherapy2009

VanA-type vancomycin-resistant Staphylococcus aureus.

Bruno Périchon, Patrice Courvalin

Open access · greenAbstract readReview
In one paragraph

Review in Antimicrobial agents and chemotherapy, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 123 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
123citing papers in PubMed, 1 pooled it
13.4field-weighted citation impact, top 1% 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

123 citing papers in PubMed, 1 synthesis or guideline pooled it, 324 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Review
  5. Antihemolytic and Thrombolytic Potential ofJournal of tropical medicine · 2026
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Vancomycin-resistantMicrobiology spectrum · 2024
    Article
  16. Article
  17. Insights into Kinases of ESKAPE Pathogens for Therapeutic Interventions.Cardiovascular & hematological agents in medicinal chemistry · 2024
    Review
  18. Screening of vancomycin resistance-associated genes in methicillin-resistantVeterinary research forum : an international quarterly journal · 2024
    Article
  19. Staph wars: the antibiotic pipeline strikes back.Microbiology (Reading, England) · 2023
    Review
  20. Article

63 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

2 authors at 1 institution in 1 country.

Bruno PérichonInstitut Pasteur, Unité des Agents Antibactériens, 25 rue du Docteur Roux, 75724 Paris Cedex 15, France.
Patrice Courvalin
Institut Pasteur · FR

Funding

NETWORK ON ANTIMICROBIAL RESISTANCE IN STAPHTLOCOCCUS AN01AI095359 · NIAID · FOCUS/MRL, INC.-MRL PHARMACEUTICAL SRVS · PI SAHM, DANIEL F · 1999 to 2000
$495k
NIAID NIH HHS N01 AI095359
6 · The paper itself

Abstract

Since 2002, nine methicillin (meticillin)-resistant Staphylococcus aureus (MRSA) strains that are also resistant to vancomycin (VRSA) have been reported in the United States, including seven clinical isolates from Michigan. The strains harbor a plasmid-borne Tn1546 element following conjugation from a glycopeptide-resistant Enterococcus strain. In the second step, Tn1546 transposed to a resident plasmid in five strains; the acquired plasmid behaved as a suicide gene delivery vector, and the incoming DNA had been rescued by illegitimate recombination. Surprisingly, combination of a glycopeptide with a beta-lactam has a strong synergistic effect against VRSA, both in vitro and in an animal model, despite resistance of the strains to both drug classes when administered separately. This results from the fact that the late peptidoglycan precursors ending in D-alanine-D-lactate (D-Ala-D-Lac) that are mainly synthesized in the presence of glycopeptide inducers are not substrates for PBP2', which is the only transpeptidase that remains active in the presence of oxacillin. One VRSA strain is partially dependent on vancomycin for growth due to a mutation in the host D-Ala:D-Ala ligase, thus having to rely on the inducible resistance pathway for cell wall synthesis. Competition growth experiments in the absence of inducer between the MRSA recipient and isogenic VRSA transconjugant revealed a disadvantage for the transconjugant, accounting, in part, for the low level of dissemination of the VRSA clinical isolates. The association of multiple molecular and environmental factors has been implicated in the regional emergence of VRSA in Michigan.

Indexed as

Vancomycin ResistanceBacterial Proteinsbeta-LactamsCarbon-Oxygen LigasesConjugation, GeneticDNA Transposable ElementsMethicillin-Resistant Staphylococcus aureusPhenotypeBacterial Proteinsbeta-LactamsCarbon-Oxygen LigasesDNA Transposable ElementsVanA ligase, Bacteria

Identifiers

PMID19506057
PMCPMC2772335
OpenAlexW2111691760

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.