Evidence map›Paper›PMID 25733508›Full record

ArticleAntimicrobial agents and chemotherapy2015

Heterogeneity of genetic pathways toward daptomycin nonsusceptibility in Staphylococcus aureus determined by adjunctive antibiotics.

Andrew D Berti, Sarah L Baines, Benjamin P Howden, George Sakoulas, Victor Nizet, Richard A Proctor, Warren E Rose

Open access · bronzeAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

27 citing papers in PubMed, 34 citations in OpenAlex.

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  6. The Role ofAntimicrobial agents and chemotherapy · 2022
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  7. Article
  8. The Role ofAntibiotics (Basel, Switzerland) · 2021
    Review
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  17. Insights Into the Evolution ofFrontiers in microbiology · 2019
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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

7 authors at 4 institutions in 2 countries.

Andrew D BertiUniversity of Wisconsin-Madison School of Pharmacy, Pharmacy Practice Division, Madison, Wisconsin, USA.
Sarah L BainesMicrobiological Diagnostic Unit Public Health Laboratory, Department of Microbiology and Immunology, The University of Melbourne at the Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia Microbiology and Infectious Diseases Departments, Austin Health, Melbourne, Victoria, Australia.
Benjamin P HowdenMicrobiological Diagnostic Unit Public Health Laboratory, Department of Microbiology and Immunology, The University of Melbourne at the Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia Microbiology and Infectious Diseases Departments, Austin Health, Melbourne, Victoria, Australia Department of Microbiology, Monash University, Melbourne, Victoria, Australia.
George SakoulasUniversity of California San Diego School of Medicine, La Jolla, California, USA.
Victor NizetUniversity of California San Diego School of Medicine, La Jolla, California, USA.
Richard A ProctorDepartments of Medical Microbiology/Immunology and Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA.
Warren E RoseUniversity of Wisconsin-Madison School of Pharmacy, Pharmacy Practice Division, Madison, Wisconsin, USA warren.rose@wisc.edu.
University of Wisconsin–Madison · USUniversity of California, San Diego · USAustin Health · AUUniversity of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Daptomycin is increasingly used in combination with other antibiotics to enhance antimicrobial efficacy and/or to mitigate the emergence of daptomycin nonsusceptibility (DNS). This study used a clinical methicillin-resistant Staphylococcus aureus (MRSA) strain in which DNS emerged upon therapy to examine the influence of antibiotic combinations on the development of mutations in specific genes (mprF, rpoBC, dltA, cls2, and yycFG) previously associated with DNS. Whole genomes of bacteria obtained following 28 days of in vitro exposure to daptomycin with or without adjunctive clarithromycin, linezolid, oxacillin, or trimethoprim-sulfamethoxazole were sequenced, and the sequences were compared to that of the progenitor isolate. The addition of oxacillin to medium containing daptomycin prevented the emergence of mprF mutation but did not prevent rpoBC mutation (P < 0.01). These isolates maintained susceptibility to daptomycin during the combined exposure (median MIC, 1 mg/liter). Daptomycin plus clarithromycin or linezolid resulted in low-level (1.5 to 8 mg/liter) and high-level (12 to 96 mg/liter) DNS, respectively, and did not prevent mprF mutation. However, these same combinations prevented rpoBC mutation. Daptomycin alone or combined with linezolid or trimethoprim-sulfamethoxazole resulted in high-level DNS and mutations in mprF plus rpoBC, cls2, and yycFG. Combining daptomycin with different antimicrobials alters the mutational space available for DNS development, thereby favoring the development of predictable collateral susceptibilities.

Indexed as

Anti-Bacterial AgentsBacterial ProteinsDaptomycinMicrobial Sensitivity TestsStaphylococcus aureusAnti-Bacterial AgentsBacterial ProteinsDaptomycin

Identifiers

PMID25733508
PMCPMC4394801
OpenAlexW2130774088

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.