Author

Ole Andreas Økstad

University of OsloORCID 0000-0001-9351-8535Unclaimed ORCID profile · follow to get notified of new preprints

Biology Disciplines

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Signature Assays, Organisms & Methods

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Approach:experimental assay· 4 Organism:human· 3 Research Focus:drug response / drug discovery· 2 Research Focus:ecology & biodiversity· 2 Assay:metagenomics· 2 Organism:bacteria (other)· 1 Research Focus:genome assembly· 1 Approach:statistical model· 1

Frequent Co-Authors

Einar Elvbakken BirkelandiD· 2 shared Gregor D. GilfillaniD· 2 shared Marianne DallandiD· 2 shared Øyvind Albert Voie· 2 shared Pål RongvediD· 2 shared Russell J. S. OrriD· 2 shared Susanne GlennaiD· 2 shared Trine B. RoungeiD· 2 shared

Activity by Year

2016-2026 · peak 3/yr

Co-Author Collaboration Network

10 top collaborators · 22 mutual co-author links

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Curved chords = mutual co-authorship

2 shared papersMicrobiology

Einar Elvbakken BirkelandORCID

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5 papers

Recent·Most cited

MicrobiologyMicrobiology SpectrumPeer-reviewedJul 14, 2026

Longitudinal analysis of the hand microbiome in response to chlorine-based antiseptic use during a military field exercise

Susanne Glenna, Einar Elvbakken Birkeland, Russell J. S. Orr…·Trine B. Rounge

This study examines how chlorine-based antiseptic use affects the hand microbiome during a military exercise, finding greater post-treatment microbiome differences with the antiseptic compared to alcohol-based alternatives.

DOI 10.1128/spectrum.03771-25

humanmetagenomics

𝕏 PostBluesky

MicrobiologybioRxivPreprintJun 5, 2026

Variable zinc concentrations among commercially available Mueller-Hinton Broth brands affects SIR interpretations during broth microdilution in vitro antimicrobial susceptibility testing with the novel metallo-beta-lactamase inhibitor APC148

Veronika Smith, Ole Andreas Økstad, Pål Rongved

This study shows that varying zinc levels in caMHB affect MIC results for MBL inhibitors like APC148, highlighting the need for standardized zinc content in testing media.

DOI 10.64898/2026.06.04.730127

humanexperimental assay

𝕏 PostBluesky

MicrobiologybioRxivPreprintMar 15, 2026

In vitro activity of combination formulations of the novel metallo-β-lactamase (MBL) inhibitor APC148 with comparator treatments against 176 MBL-containing Enterobacterales isolates from the SENTRY Antimicrobial Surveillance Program (2019-2022)

Veronika Smith, Bjorn Klem, B. Bolstad…·Pål Rongved

This study evaluates the in vitro activity of APC148 combined with carbapenems against MBL-producing Enterobacterales isolates, showing high susceptibility rates.

2 citations

experimental assaydrug response / drug discovery

𝕏 PostBluesky

MicrobiologyMicrobiology SpectrumPeer-reviewedApr 15, 2025

Skin bacterial community dynamics of hands and forearms before and after military field exercise

Susanne Glenna, Einar Elvbakken Birkeland, Russell J. S. Orr…·Trine B. Rounge

This study examines how a military field exercise affects the bacterial communities on soldiers' hands and forearms, finding site-specific changes in diversity and composition.

4 citations

humanmetagenomics

𝕏 PostBluesky

MicrobiologybioRxivPreprintSep 7, 2016

Draft genomes of clinical Bacillus cereus isolates AH725 and B06.009 closely related to reference strains ATCC 14579 and ATCC 10987

Thomas H. A. Haverkamp, Nicolas J. Tourasse, Alexander J. Nederbragt…·Ole Andreas Økstad

The paper presents draft genomes of two clinical Bacillus cereus isolates, showing high similarity to reference strains, highlighting their opportunistic pathogenic potential.

DOI 10.1101/073924

bacteria (other)whole-genome sequencing

𝕏 PostBluesky