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Farmasiija instituhtta orjan.samuelsen@uit.no Tromsø

Samuelsen, Ørjan



  • Christopher Frøhlich, Vidar Sørum, Nobuhiko Tokuriki, Pål Jarle Johnsen, Ørjan Samuelsen :
    Evolution of β-lactamase-mediated cefiderocol resistance
    Journal of Antimicrobial Chemotherapy 2022 ARKIV / DOI
  • Kenneth Lindstedt, Dorota Julia Buczek, Torunn Annie Pedersen, Erik Hjerde, Niclas Peter Raffelsberger, Yutaka Suzuki et al.:
    Detection of Klebsiella pneumoniae human gut carriage: a comparison of culture, qPCR, and whole metagenomic sequencing methods
    Gut microbes 31. Aug 2022 ARKIV / DOI
  • Aleksandra Jakovljev, Jan Egil Afset, Kjersti Haugum, Harald Otto Steinum, Torunn Gresdal Rønning, Ørjan Samuelsen et al.:
    Phenotypic and genotypic characterisation of thymine auxotrophy in Escherichia coli isolated from a patient with recurrent bloodstream infection
    PLOS ONE 2022 ARKIV / DOI
  • Vidar Sørum, Emma Lu Øynes, Anna Sollied Møller, Klaus Harms, Ørjan Samuelsen, Nicole L. Podnecky et al.:
    Evolutionary Instability of Collateral Susceptibility Networks in Ciprofloxacin-Resistant Clinical Escherichia coli Strains
    mBio 2022 ARKIV / DOI
  • Tommi Mäklin, Teemu Kallonen, Jarno Alanko, Ørjan Samuelsen, Kristin Hegstad, Veli Mäkinen et al.:
    Bacterial genomic epidemiology with mixed samples
    Microbial Genomics 2021 ARKIV / DOI
  • Jonina Gudmundsdottir, Elizabeth G. Aarag Fredheim, Catharina I.M. Koumans, Joachim Hegstad, Po-Cheng Tang, Dan I. Andersson et al.:
    The chemotherapeutic drug methotrexate selects for antibiotic resistance
    EBioMedicine 2021 ARKIV / DOI
  • Jessin Janice, Nicholas Agyepong, Alex Owusu-Ofori, Usha Govinden, Sabiha Essack, Ørjan Samuelsen et al.:
    Carbapenem resistance determinants acquired through novel chromosomal integrations in extensively drug-resistant pseudomonas aeruginosa
    Antimicrobial Agents and Chemotherapy 2021 ARKIV / DOI
  • Rebecca Ashley Gladstone, Alan McNally, Anna Kaarina Pöntinen, Gerry Tonkin-Hill, John A. Lees, Kusti Onni Skytén et al.:
    Emergence and dissemination of antimicrobial resistance in Escherichia coli causing bloodstream infections in Norway in 2002–17: a nationwide, longitudinal, microbial population genomic study
    Lancet Microbe 29. Jun 2021 FULLTEKST / ARKIV / DOI
  • Niclas Peter Raffelsberger, Marit Andrea Klokkhammer Hetland, Kristian Svendsen, Lars Småbrekke, Iren Høyland Löhr, Lotte Andreassen et al.:
    Gastrointestinal carriage of Klebsiella pneumoniae in a general adult population: a cross-sectional study of risk factors and bacterial genomic diversity
    Gut microbes 2021 ARKIV / DOI
  • Julia Kloos, João A Gama, Joachim Hegstad, Ørjan Samuelsen, Pål J Johnsen :
    Piggybacking on Niche Adaptation Improves the Maintenance of Multidrug-Resistance Plasmids
    Molecular Biology and Evolution (MBE) 2021 ARKIV / DOI
  • Sergio Arredondo Alonso, Anna Kaarina Pöntinen, Francois Pierre Alexandre Cleon, Rebecca Ashley Gladstone, Anita C. Schürch, Pål Jarle Johnsen et al.:
    A high-throughput multiplexing and selection strategy to complete bacterial genomes
    GigaScience 2021 ARKIV / DOI
  • Supathep Tansirichaiya, Richard N. Goodman, Xinyu Guo, Issra Bulgasim, Ørjan Samuelsen, Mohammed Al-Haroni et al.:
    Intracellular Transposition and Capture of Mobile Genetic Elements following Intercellular Conjugation of Multidrug Resistance Conjugative Plasmids from Clinical Enterobacteriaceae Isolates
    Microbiology spectrum 2021 ARKIV / DOI
  • Aasmund Fostervold, Marit Andrea Klokkhammer Hetland, Ragna-Johanne Bakksjø, Eva Bernhoff, Kathryn E. Holt, Ørjan Samuelsen et al.:
    A nationwide genomic study of clinical Klebsiella pneumoniae in Norway 2001–15: introduction and spread of ESBLs facilitated by clonal groups CG15 and CG307
    Journal of Antimicrobial Chemotherapy 2021 ARKIV / DOI
  • Christopher Frøhlich, João Alves Gama, Klaus Harms, Viivi H. A. Hirvonen, Bjarte Aarmo Lund, Marc W. van der Kamp et al.:
    Cryptic β-Lactamase Evolution Is Driven by Low β-Lactam Concentrations
    mSphere 2021 ARKIV / DOI
  • Catherine Ludden, Felix Lötsch, Erik Alm, Narender Kumar, Karin Johansson, Barbara Albiger et al.:
    Cross-border spread of blaNDM-1- and blaOXA-48-positive Klebsiella pneumoniae: a European collaborative analysis of whole genome sequencing and epidemiological data, 2014 to 2019
    Eurosurveillance 2020 ARKIV / DOI
  • Joao Pedro Alves Gama, Julia Maria Kloos, Pål Jarle Johnsen, Ørjan Samuelsen :
    Host dependent maintenance of a blaNDM-1-encoding plasmid in clinical Escherichia coli isolates
    Scientific Reports 2020 ARKIV / DOI
  • Julia Maria Kloos, Joao Pedro Alves Gama, Pål Jarle Johnsen, Ørjan Samuelsen :
    Host dependent maintenance of a blaNDM-1-encoding plasmid in clinical Escherichia coli isolates
    Scientific Reports 2020 DOI
  • Torunn Annie Pedersen, Marit Gjerde Tellevik, Øyvind Kommedal, Paul Christoffer Lindemann, Sabrina John Moyo, Jessin Janice James Peter et al.:
    Horizontal plasmid transfer among klebsiella pneumoniae isolates is the key factor for dissemination of extended-spectrum β-lactamases among children in Tanzania
    mSphere 15. Jul 2020 ARKIV / DOI
  • Hanna-Kirsti S. Leiros, Ane Molden Thomassen, Ørjan Samuelsen, Carl-Fredrik Flach, Stathis D. Kotsakis, Joakim Larsson :
    Structural insights into the enhanced carbapenemase efficiency of OXA-655 compared to OXA-10
    FEBS Open Bio 2020 ARKIV / FULLTEKST / DOI
  • Christopher Frøhlich, Vidar Sørum, Sandra Huber, Ørjan Samuelsen, Fanny Berglund, Erik Kristiansson et al.:
    Structural and biochemical characterization of the environmental MBLs MYO-1, ECV-1 and SHD-1
    Journal of Antimicrobial Chemotherapy 2020 ARKIV / DOI
  • Ørjan Samuelsen, Ove Alexander Høgmoen Åstrand, Christopher Frøhlich, Adam Heikal, Susann Skagseth, Trine Josefine Olsen Carlsen et al.:
    ZN148 Is a Modular Synthetic Metallo-beta-Lactamase Inhibitor That Reverses Carbapenem Resistance in Gram-Negative Pathogens In Vivo
    Antimicrobial Agents and Chemotherapy 2020 ARKIV / DATA / DOI
  • Christopher Frøhlich, Vidar Sørum, Ane Molden Thomassen, Pål Jarle Johnsen, Hanna-Kirsti S. Leiros, Ørjan Samuelsen :
    OXA-48-Mediated Ceftazidime-Avibactam Resistance Is Associated with Evolutionary Trade-Offs
    mSphere 2019 ARKIV / DOI
  • Petter Elstrøm, Elisabeth Astrup, Kristin Hegstad, Ørjan Samuelsen, Hege Enger, Oliver Kacelnik :
    The fight to keep resistance at bay, epidemiology of carbapenemase producing organisms (CPOs), vancomycin resistant enterococci (VRE) and methicillin resistant Staphylococcus aureus (MRSA) in Norway, 2006-2017
    PLOS ONE 2019 ARKIV / DOI
  • Anthony Prandina, Sylvie Radix, Marc Le Borgne, Lars Petter Jordheim, Zineb Bousfiha, Christopher Fröhlich et al.:
    Synthesis and biological evaluation of new dipicolylamine zinc chelators as metallo-β-lactamase inhibitors
    Tetrahedron 2019 ARKIV / DOI
  • Geir Kildahl-Andersen, Christian Schnaars, Anthony Prandina, Sylvie Radix, Marc Le Borgne, Lars Petter Jordheim et al.:
    Synthesis and biological evaluation of zinc chelating compounds as metallo-β-lactamase inhibitors
    MedChemComm 2019 DOI
  • Ilya Nikolaevich Zykov, Niels Frimodt-Møller, Lars Småbrekke, Arnfinn Sundsfjord, Ørjan Samuelsen :
    Efficacy of mecillinam against clinical multidrug-resistant Escherichia coli in a murine urinary tract infection model
    International Journal of Antimicrobial Agents 02. Nov 2019 ARKIV / DOI
  • Nicole L. Podnecky, Elizabeth Aarag, Julia Maria Kloos, Vidar Sørum, Raul Primicerio, Adam Paul Roberts et al.:
    Conserved collateral antibiotic susceptibility networks in diverse clinical strains of Escherichia coli.
    Nature Communications 10. Sep 2018 ARKIV / DOI
  • Louise Roer, Søren Overballe-Petersen, Frank Hansen, Kristian Schønning, Mikala Wang, Bent L Røder et al.:
    Escherichia coli Sequence Type 410 Is Causing New International High-Risk Clones
    mSphere 2018 ARKIV / DOI
  • George Taiaroa, Ørjan Samuelsen, Tom Kristensen, Ole Andreas Økstad, Adam Heikal :
    Complete Genome Sequence of Pseudomonas aeruginosa K34-7, a Carbapenem-Resistant Isolate of the High-Risk Sequence Type 233
    Microbiology Resource Announcements (MRA) 2018 ARKIV / DOI
  • Ellionor Rapp, Ørjan Samuelsen, Martin Sundqvist :
    Detection of carbapenemases with a newly developed commercial assay using Matrix Assisted Laser Desorption Ionization-Time of Flight
    Journal of Microbiological Methods 2018 ARKIV / DOI
  • Torunn Annie Pedersen, John Osei Sekyere, Usha Govinden, Krishnee Moodley, Audun Sivertsen, Ørjan Samuelsen et al.:
    Spread of plasmid-encoded NDM-1 and GES-5 carbapenemases among extensively drug-resistant and pandrug-resistant clinical enterobacteriaceae in durban, South Africa
    Antimicrobial Agents and Chemotherapy 2018 DOI
  • Christian Schnaars, Geir kildahl-Andersen, Anthony Prandina, Roya Popal, Sylvie Radix, Marc Le Borgne et al.:
    Synthesis and preclinical evaluation of TPA-based zinc chelators as metallo-β-lactamase inhibitors
    ACS Infectious Diseases 2018 DOI
  • Ørjan Samuelsen, Frank Hansen, Bettina Aasnæs, Henrik Hasman, Bjarte Aarmo Lund, Hanna-Kirsti S. Leiros et al.:
    Dissemination and Characteristics of a Novel Plasmid-Encoded Carbapenem-Hydrolyzing Class D β-Lactamase, OXA-436, Found in Isolates from Four Patients at Six Different Hospitals in Denmark
    Antimicrobial Agents and Chemotherapy 2018 DOI
  • Bjørg Haldorsen, Christian G Giske, Dennis S Hansen, Kristjan Orri Helgason, Gunnar Kahlmeter, Iren Høyland Löhr et al.:
    Performance of the EUCAST disc diffusion method and two MIC methods in detection of Enterobacteriaceae with reduced susceptibility to meropenem: the NordicAST CPE study.
    Journal of Antimicrobial Chemotherapy 2018 ARKIV / DOI
  • Ilya Nikolaevich Zykov, Ørjan Samuelsen, Lotte Jakobsen, Lars Småbrekke, Dan I. Andersson, Arnfinn Sundsfjord et al.:
    Pharmacokinetics and pharmacodynamics of fosfomycin and its activity against extended-spectrum-lactamase-, plasmid-mediated AmpC-, and carbapenemase-producing escherichia coli in a murine urinary tract infection model
    Antimicrobial Agents and Chemotherapy 2018 ARKIV / DOI
  • Julia Maria Kloos, Lea Jänisch, Anna Kaarina Pöntinen, Ørjan Samuelsen, Pål Jarle Johnsen, Jukka Corander et al.:
    Different metabolic proficiency among dominant ExPEC lineages
    2022
  • Christopher Frøhlich, Vidar Sørum, Nobuhiko Tokuriki, Ørjan Samuelsen :
    Evolution of ß-lactamase mediated cefiderocol resistance
    2022
  • Bjørg Haldorsen, Jessin Janice, Ørjan Samuelsen :
    Evaluation of the Amplex eazyplex® SuperBug Acineto test for detection of acquired OXA and NDM carbapenemases in Acinetobacter spp.
    Journal of Global Antimicrobial Resistance 2021 DOI
  • João Alves Gama, Julia Maria Kloos, Joachim Hegstad, Ørjan Samuelsen, Pål Jarle Johnsen :
    Plasmid cost alleviation as a consequence of niche-adaptation
    2021
  • Julia Maria Kloos, João Alves Gama, Joachim Hegstad, Ørjan Samuelsen, Pål Jarle Johnsen :
    Plasmid Cost Alleviation By Hitchhiking On Niche-adaptation
    2021
  • Julia Maria Kloos, Joao Pedro Alves Gama, Joachim Hegstad, Ørjan Samuelsen, Pål Jarle Johnsen :
    E. coli Niche Adaptation Improves Plasmid Maintenance
    2021
  • Vidar Sørum, Anna Sollied Møller, Pål Jarle Johnsen, Ørjan Samuelsen, Sören Abel, Nicole L. Podnecky :
    Evolutionary stability of collateral effects in ciprofloxacin resistant clinical Escherichia coli strains
    2019
  • Vidar Sørum, Anna Sollied Møller, Sören Abel, Ørjan Samuelsen, Nicole L. Podnecky, Pål Jarle Johnsen :
    Evolutionary stability of collateral effects in ciprofloxacin resistant clinical Escherichia coli strains
    2019
  • Vidar Sørum, Emma Lu Øynes, Anna Møller, Nicole L. Podnecky, Sören Abel, Ørjan Samuelsen et al.:
    Evolutionary stability of collateral susceptibility networks in clinical Escherichia coli strains
    2019
  • Christopher Frøhlich, Hanna-Kirsti S. Leiros, Pål Jarle Johnsen, Ørjan Samuelsen :
    Sub-inhibitory concentrations of ceftazidime drive evolution of the OXA-48 carbapenemase
    2019
  • Christopher Frøhlich, Pål Jarle Johnsen, Hanna-Kirsti Schrøder Leiros, Ørjan Samuelsen :
    Evolution of OXA-48 under sub-MIC conditions
    2019
  • Christopher Frøhlich, Vidar Sørum, Hanna-Kirsti S. Leiros, Pål Jarle Johnsen, Ørjan Samuelsen :
    Development of OXA-48 mediated ceftazidme-avibactam resistance is associated with an evolutionary trade-off
    2018
  • Aleksandra Jakovljev, Jan Egil Afset, Kjersti Haugum, Torunn Gresdal Rønning, Harald Otto Steinum, Ørjan Samuelsen et al.:
    "Escherichia coli sepsis: casus presentasjon med uvanlig resistensmønster"
    2018
  • Julia Maria Kloos, Joao Pedro Alves Gama, Ørjan Samuelsen, Pål Jarle Johnsen :
    Klebsiella pneumoniae MDR-encoding plasmids in clinical isolates of uropathogenic Escherichia coli: plasmid-host co-evolution and its effect on fitness cost of plasmid-mediated resistance
    2018
  • Julia Maria Kloos, Joao Pedro Alves Gama, Ørjan Samuelsen, Pål Jarle Johnsen :
    Plasmid-host co-evolution of Klebsiella pneumoniae MDR-encoding plasmids in clinical isolates of uropathogenic Escherichia coli: effect on fitness cost of plasmid-mediated resistance
    2018

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