Evidence map›Paper›PMID 42268235›Full record

ArticleAntimicrobial agents and chemotherapy2026

The β-lactam adjuvant guanosine potentiates anti-folate antibiotics and pyrimidine synthesis inhibitors by depleting thymidine in methicillin-resistant

Aaron C Nolan, Jessica B Kelly, Jongsam Ahn, Dhananjay Shinde, Vinai C Thomas, Merve S Zeden, James P O'Gara

Abstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Aaron C NolanMicrobiology, School of Biological and Chemical Sciences and Institute for Health Discovery and Innovation, University of Galway, Galway, Ireland.ORCID 0009-0006-1946-0842
Jessica B KellyMicrobiology, School of Biological and Chemical Sciences and Institute for Health Discovery and Innovation, University of Galway, Galway, Ireland.ORCID 0000-0001-7583-7444
Jongsam AhnDepartment of Pathology, Microbiology and Immunology, University of Nebraska Medical Center, Omaha, Nebraska, USA.
Dhananjay ShindeDepartment of Pathology, Microbiology and Immunology, University of Nebraska Medical Center, Omaha, Nebraska, USA.
Vinai C ThomasDepartment of Pathology, Microbiology and Immunology, University of Nebraska Medical Center, Omaha, Nebraska, USA.ORCID 0000-0002-7886-0727
Merve S ZedenMicrobiology, School of Biological and Chemical Sciences and Institute for Health Discovery and Innovation, University of Galway, Galway, Ireland.ORCID 0000-0003-3636-700X
James P O'GaraMicrobiology, School of Biological and Chemical Sciences and Institute for Health Discovery and Innovation, University of Galway, Galway, Ireland.ORCID 0000-0003-3866-7161

Funding

Joint Programming Initiative on Antimicrobial Resistance PURIFY AMRNational Institute of Allergy and Infectious Diseases R01AI125588 and P01AI083211Science Foundation Ireland 19/FFP/6441Science Foundation Ireland 22/PATH-S/10804
6 · The paper itself

Abstract

Efforts to improve the effectiveness of existing interventions for antimicrobial-resistant infections include identifying new ways to overcome resistance to licensed antibiotics using adjuvants or deploying antibiotics in novel combinations. Although antibiotics targeting the bacterial cell wall (e.g., β-lactams) and folate metabolism (e.g., trimethoprim-sulfamethoxazole [TMP-SMX]) remain cornerstones of modern healthcare, resistance to both classes poses an ongoing therapeutic challenge. We recently demonstrated that purine nucleosides can act as potent antibiotic adjuvants, restoring β-lactam susceptibility in methicillin-resistant

Indexed as

Anti-Bacterial Agentsbeta-LactamsFolic Acid AntagonistsGuanosineMethicillin-Resistant Staphylococcus aureusPyrimidinesThymidinebeta Lactam AntibioticsBiofilmsDrug SynergismFloxuridineFluorouracilMicrobial Sensitivity TestsOxacillinReactive Oxygen SpeciesTrimethoprim, Sulfamethoxazole Drug CombinationAnti-Bacterial Agentsbeta Lactam Antibioticsbeta-LactamsFloxuridineFluorouracilFolic Acid AntagonistsGuanosineOxacillinPyrimidinesReactive Oxygen SpeciesThymidineTrimethoprim, Sulfamethoxazole Drug Combinationanti-cancer drugsanti-folate antibioticsMRSAnucleotide metabolismpyrimidine antimetabolitesROSStaphylococcus aureusthymidineβ-lactam resistance

Identifiers

PMID42268235
PMCPMC13321833

What OpenQuestion holds

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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.