Evidence map›Paper›PMID 35652643›Full record

ArticleAntimicrobial agents and chemotherapy2022

Evolutionary Trajectories toward High-Level β-Lactam/β-Lactamase Inhibitor Resistance in the Presence of Multiple β-Lactamases.

Fredrika Rajer, Lisa Allander, Philip A Karlsson, Linus Sandegren

Open access · greenAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.3field-weighted citation impact, top 21% 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

16 citing papers in PubMed, 19 citations in OpenAlex.

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  4. Antimicrobial agents and chemotherapy · 2026
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  16. Challenges and shortcomings of antibacterial discovery projects.Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases · 2023
    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

4 authors at 1 institution in 1 country.

Fredrika RajerDepartment of Medical Biochemistry and Microbiology, Uppsala Universitygrid.8993.b, Uppsala, Sweden.ORCID 0000-0002-4211-5696
Lisa AllanderDepartment of Medical Sciences, Uppsala Universitygrid.8993.b, Uppsala, Sweden.
Philip A KarlssonDepartment of Medical Biochemistry and Microbiology, Uppsala Universitygrid.8993.b, Uppsala, Sweden.ORCID 0000-0003-0060-005X
Linus SandegrenDepartment of Medical Biochemistry and Microbiology, Uppsala Universitygrid.8993.b, Uppsala, Sweden.ORCID 0000-0001-7382-9782
Uppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

β-Lactam antibiotics are the first choice for the treatment of most bacterial infections. However, the increased prevalence of β-lactamases, in particular extended-spectrum β-lactamases, in pathogenic bacteria has severely limited the possibility of using β-lactam treatments. Combining β-lactam antibiotics with β-lactamase inhibitors can restore treatment efficacy by negating the effect of the β-lactamase and has become increasingly important against infections caused by β-lactamase-producing strains. Not surprisingly, bacteria with resistance to even these combinations have been found in patients. Studies on the development of bacterial resistance to β-lactam/β-lactamase inhibitor combinations have focused mainly on the effects of single, chromosomal or plasmid-borne, β-lactamases. However, clinical isolates often carry more than one β-lactamase in addition to multiple other resistance genes. Here, we investigate how the evolutionary trajectories of the development of resistance to three commonly used β-lactam/β-lactamase inhibitor combinations, ampicillin-sulbactam, piperacillin-tazobactam, and ceftazidime-avibactam, were affected by the presence of three common β-lactamases, TEM-1, CTX-M-15, and OXA-1. First-step resistance was due mainly to extensive gene amplifications of one or several of the β-lactamase genes where the amplification pattern directly depended on the respective drug combination. Amplifications also served as a stepping-stone for high-level resistance in combination with additional mutations that reduced drug influx or mutations in the β-lactamase gene

Indexed as

beta-Lactamase Inhibitorsbeta-LactamasesAnti-Bacterial AgentsEscherichia coliHumansLactamsMicrobial Sensitivity TestsMonobactamsPiperacillin, Tazobactam Drug CombinationAnti-Bacterial Agentsbeta-Lactamase Inhibitorsbeta-LactamasesLactamsMonobactamsPiperacillin, Tazobactam Drug Combinationantibiotic resistanceevolutiongene amplificationβ-lactam/β-lactamase inhibitor

Identifiers

PMID35652643
PMCPMC9211440
OpenAlexW4281677824

What OpenQuestion holds

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Read underepoch 390

Registered trials

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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.