Evidence map›Paper›PMID 23295925›Full record

ArticleAntimicrobial agents and chemotherapy2013

Reduced vancomycin susceptibility in an in vitro catheter-related biofilm model correlates with poor therapeutic outcomes in experimental endocarditis due to methicillin-resistant Staphylococcus aureus.

Wessam Abdelhady, Arnold S Bayer, Kati Seidl, Cynthia C Nast, Megan R Kiedrowski, Alexander R Horswill, Michael R Yeaman, Yan Q Xiong

Open access · bronzeAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% 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

44 citing papers in PubMed, 1 synthesis or guideline pooled it, 63 citations in OpenAlex.

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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

8 authors at 5 institutions in 2 countries.

Wessam AbdelhadyLos Angeles Biomedical Research Institute at Harbor--UCLA Medical Center, Torrance, CA, USA.
Arnold S Bayer
Kati Seidl
Cynthia C Nast
Megan R Kiedrowski
Alexander R Horswill
Michael R Yeaman
Yan Q Xiong
Harbor–UCLA Medical Center · USUniversity of California, Los Angeles · USUniversity of Iowa · USThe Lundquist Institute · USUniversity of Zurich · CH

Funding

UCLA Clinical and Translational Science InstituteUL1TR000124 · NCATS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI DUBINETT, STEVEN M. · 2012 to 2015
$57.0M
The S. aureus biofilm lifecycleP01AI083211 · NIAID · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI KIELIAN, TAMMY L · 2009 to 2023
$32.1M
Staphylococcal Adaptations to Platelet Microbicidal ProteinR01AI039108 · NIAID · LUNDQUIST INSTITUTE FOR BIOMEDICAL INNOVATION AT HARBOR-UCLA MEDICAL CENTER · PI BAYER, ARNOLD S · 1997 to 2016
$5.1M
Microbicidal Proteins from PlateletsR01AI039001 · NIAID · LUNDQUIST INSTITUTE FOR BIOMEDICAL INNOVATION AT HARBOR-UCLA MEDICAL CENTER · PI YEAMAN, MICHAEL R · 2006 to 2010
$1.7M
Early agr Activation is a Key Pathogenic Signature in Persistent MRSA BacteremiaR21AI097657 · NIAID · LUNDQUIST INSTITUTE FOR BIOMEDICAL INNOVATION AT HARBOR-UCLA MEDICAL CENTER · PI XIONG, YAN Q. · 2012 to 2013
$390k
NCATS NIH HHS UL1 TR000124NIAID NIH HHS P01 AI083211NIAID NIH HHS R01 AI039001NIAID NIH HHS R01 AI039108NIAID NIH HHS R01AI-39001NIAID NIH HHS R01AI-39108NIAID NIH HHS R21 AI097657NIAID NIH HHS R21AI097657
6 · The paper itself

Abstract

Staphylococcus aureus is the most common cause of endovascular infections, including catheter sepsis and infective endocarditis (IE). Vancomycin (VAN) is the primary choice for treatment of methicillin-resistant S. aureus (MRSA) infections. However, high rates of VAN treatment failure in MRSA infections caused by VAN-susceptible strains have been increasingly reported. Biofilm-associated MRSA infections are especially prone to clinical antibiotic failure. The present studies examined potential relationships between MRSA susceptibility to VAN in biofilms in vitro and nonsusceptibility to VAN in endovascular infection in vivo. Using 10 "VAN-susceptible" MRSA bloodstream isolates previously investigated for VAN responsiveness in experimental IE, we studied the mechanism(s) of such in vivo VAN resistance, including: (i) VAN binding to MRSA organisms; (ii) the impact of VAN on biofilm formation and biofilm composition; (iii) VAN efficacy in an in vitro catheter-related biofilm model; (iv) effects on cell wall thickness. As a group, the five strains previously categorized as VAN nonresponders (non-Rsp) in the experimental IE model differed from the five responders (Rsp) in terms of lower VAN binding, increased biofilm formation, higher survival in the presence of VAN within biofilms in the presence or absence of catheters, and greater biofilm reduction upon proteinase K treatment. Interestingly, sub-MICs of VAN significantly promoted biofilm formation only in the non-Rsp isolates. Cell wall thickness was similar among all MRSA strains. These results suggest that sublethal VAN levels that induce biofilm formation and reduce efficacy of VAN in the in vitro catheter-associated biofilms may contribute to suboptimal treatment outcomes for endovascular infections caused by "VAN-susceptible" MRSA strains.

Indexed as

Models, BiologicalAnti-Bacterial AgentsBiofilmsCatheter-Related InfectionsCell WallEndocarditis, BacterialEndopeptidase KHumansMethicillin-Resistant Staphylococcus aureusMicrobial Sensitivity TestsStaphylococcal InfectionsVancomycinVancomycin ResistanceAnti-Bacterial AgentsEndopeptidase KVancomycin

Identifiers

PMID23295925
PMCPMC3591927
OpenAlexW2030720453

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.