Evidence map›Paper›PMID 22905220›Full record

ArticlePloS one2012

Factors contributing to epidemic MRSA clones replacement in a hospital setting.

Rossella Baldan, Francesca Testa, Nicola I Lorè, Alessandra Bragonzi, Paola Cichero, Cristina Ossi, Anna Biancardi, Paola Nizzero, Matteo Moro, Daniela M Cirillo

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

19 citing papers in PubMed, 36 citations in OpenAlex.

  1. Trial
  2. Trends, Seasonality, and the Impact of COVID-19 on ClinicalAntibiotics (Basel, Switzerland) · 2026
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  7. Vancomycin Resistance inMicroorganisms · 2022
    Review
  8. Article
  9. Article
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  11. Article
  12. Article
  13. Community-associatedInfection and drug resistance · 2019
    Article
  14. Review
  15. Article
  16. Review
  17. Staphylococcus aureus bacteremia at 5 US academic medical centers, 2008-2011: significant geographic variation in community-onset infections.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2014
    Article
  18. Article
  19. 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

10 authors at 2 institutions in 1 country.

Rossella BaldanEmerging Bacterial Pathogens Unit, San Raffaele Scientific Institute, Milan, Italy.
Francesca Testa
Nicola I Lorè
Alessandra Bragonzi
Paola Cichero
Cristina Ossi
Anna Biancardi
Paola Nizzero
Matteo Moro
Daniela M Cirillo
San Raffaele University of Rome · ITVita-Salute San Raffaele University · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The mechanisms governing the epidemiology dynamics and success determinants of a specific healthcare-associated methicillin-resistant S. aureus (HA-MRSA) clone in hospital settings are still unclear. Important epidemiological changes have occurred in Europe since 2000 that have been related to the appearance of the ST22-IV clone. Between 2006 and 2010, we observed the establishment of the ST22-IV clone displacing the predominant Italian clone, ST228-I, in a large Italian university hospital. To investigate the factors associated with a successful spread of epidemic MRSA clones we studied the biofilm production, the competitive behavior in co-culture, the capacity of invasion of the A549 cells, and the susceptibility to infection in a murine model of acute pneumonia of the two major HA-MRSA clones, ST22-IV and ST228-I. We showed that persistence of ST22-IV is associated with its increased biofilm production and capacity to inhibit the growth of ST228-I in co-culture. Compared to ST228-I, ST22-IV had a significantly higher capacity to invade the A549 cells and a higher virulence in a murine model of acute lung infection causing severe inflammation and determining death in all the mice within 60 hours. On the contrary, ST228-I was associated with mice survival and clearance of the infection. ST22-IV, compared with ST228-I, caused a higher number of persistent, long lasting bacteremia. These data suggest that ST22-IV could have exploited its capacity to i) increase its biofilm production over time, ii) maintain its growth kinetics in the presence of a competitor and iii) be particularly invasive and virulent both in vitro and in vivo, to replace other well-established MRSA clones, becoming the predominant European clone.

Indexed as

AgedAnimalsBiofilmsCell Line, TumorCoculture TechniquesCross InfectionHospitalsHumansKineticsLungMethicillin-Resistant Staphylococcus aureusMiceMice, Inbred C57BLMiddle AgedStaphylococcal InfectionsVirulence FactorsVirulence Factors

Identifiers

PMID22905220
PMCPMC3419217
OpenAlexW2025121906

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.