Evidence map›Paper›PMID 25630818›Full record

ArticlePharmaceutical research2015

Pharmacodynamic and response surface analysis of linezolid or vancomycin combined with meropenem against Staphylococcus aureus.

Sebastian G Wicha, Martin G Kees, Janin Kuss, Charlotte Kloft

Open access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Pharmaceutical research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 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

4 authors at 2 institutions in 2 countries.

Sebastian G WichaDepartment of Clinical Pharmacy and Biochemistry, Institute of Pharmacy, Freie Universitaet Berlin, Kelchstr. 31, 12169, Berlin, Germany.
Martin G Kees
Janin Kuss
Charlotte Kloft
Freie Universität Berlin · DEFranklin University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo systematically assess the impact of pharmacodynamic interactions when adding either linezolid or vancomycin to meropenem on the antibacterial activity against methicillin-susceptible Staphylococcus aureus (MSSA). These regimens are frequently used in empiric therapy when risk factors for MRSA are present, but MSSA will often turn out as pathogen.

methodsCheckerboard and time-kill curve studies were performed against three strains of MSSA covering clinically relevant concentrations of all antibiotics. We newly elaborated a response surface analysis (RSA) to quantify the extent of the pharmacodynamic interactions.

resultsThe most prominent result was that linezolid fully antagonised the rapid (4-6 h) bactericidal effect of meropenem against MSSA to bacteriostasis at clinically relevant concentrations of both drugs. This interaction was invisible in the conventional checkerboard analysis (insensitive turbidity threshold). RSA quantified a 1.5-3.2 log10-fold higher bacterial load compared to expected additivity for linezolid and meropenem. Vancomycin and meropenem interacted partly synergistic (subinhibitory) or additive (inhibitory combinations) being bactericidal after 24 h.

conclusionsStandard doses of linezolid and meropenem will provide inhibitory concentrations and thus pharmacodynamic antagonism throughout the whole dosing interval for MSSA. Further data is required to assess the clinical significance of this interaction.

Indexed as

Anti-Bacterial AgentsDose-Response Relationship, DrugDrug InteractionsLinezolidMeropenemMethicillin-Resistant Staphylococcus aureusMicrobial Sensitivity TestsThienamycinsVancomycinAnti-Bacterial AgentsLinezolidMeropenemThienamycinsVancomycin

Identifiers

PMID25630818
OpenAlexW2000518631

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.