Guido Werner,
Natacha Couto,
Edward J. Feil,
Angela Novais,
Kristin Hegstad,
Benjamin P. Howden
m.fl.:
Taking hospital pathogen surveillance to the next level
Theresa Wagner,
Benjamin P Howden,
Arnfinn Sundsfjord,
Kristin Hegstad
:
Transiently silent acquired antimicrobial resistance: an emerging challenge in susceptibility testing
Journal of Antimicrobial Chemotherapy 2023
ARKIV /
DOI
Theresa Wagner,
Jessin Janice,
Marc Schluz,
Susan Ballard,
Anders da Silva,
Geoffrey W Coombs
m.fl.:
Reversible vancomycin susceptibility within emerging ST1421 Enterococcus faecium strains is associated with rearranged vanA-gene clusters and increased vanA plasmid copy number
International Journal of Antimicrobial Agents 2023
ARKIV /
DOI
Theresa Maria Wagner,
Felipe Romero-Saavedra,
Diana Laverde,
Mona Susan Johannessen,
Johannes Hübner,
Kristin Hegstad
:
Enterococcal Membrane Vesicles as Vaccine Candidates
International Journal of Molecular Sciences 2023
ARKIV /
DOI
Jessin Janice,
Theresa Maria Wagner,
Karina Olsen,
Joachim Hegstad,
Kristin Hegstad
:
Emergence of vancomycin-resistant enterococci from vancomycin-susceptible enterococci in hospitalized patients under antimicrobial therapy
Journal of Global Antimicrobial Resistance 2023
ARKIV /
DOI
Amalie Von Barner Tvedegaard Heim,
Jessin Janice,
Jørgen Bjørnholt,
Bjørn Tore Lunestad,
Kristin Hegstad,
Cecilie Smith Svanevik
:
Genomic insights into Enterococcus faecium isolates from marine bivalves highlight One Health concerns and healthcare linkages
Kristin Hegstad,
Anna Kaarina Pöntinen,
Jørgen Bjørnholt,
Else Quist Paulsen,
Arnfinn Ståle Sundsfjord
:
The first tigecycline resistant Enterococcus faecium in Norway was related to tigecycline exposure
Journal of Global Antimicrobial Resistance 2023
ARKIV /
DOI
Mushtaq Talib Shawi al Rubaye,
Jessin Janice,
Jørgen Bjørnholt,
Iren Høyland Löhr,
Arnfinn Ståle Sundsfjord,
Kristin Hegstad
:
The first vanE-type vancomycin resistant Enterococcus faecalis isolates in Norway – phenotypic and molecular characteristics
Journal of Global Antimicrobial Resistance 2023
ARKIV /
DOI
Mushtaq al Rubaye,
Jessin Janice,
Jørgen Vildershøj Bjørnholt,
Oliver Kacelnik,
Bjørg C. Haldorsen,
Randi M. Nygaard
m.fl.:
The population structure of vancomycin-resistant and
-susceptible Enterococcus faecium in a low-prevalence
antimicrobial resistance setting is highly influenced by
circulating global hospital-associated clones
Caillan Crowe-McAuliffe,
Victoriia Murina,
Kathryn Jane Turnbull,
Susanne Huch,
Marje Kasari,
Hiraku Takada
m.fl.:
Structural basis for PoxtA-mediated resistance to phenicol and oxazolidinone antibiotics
Sebastiaan J van Hal,
Rob J L Willems,
Theodore Gouliouris,
Susan A Ballard,
Teresa M Coque,
Anette M Hammerum
m.fl.:
The interplay between community and hospital Enterococcus faecium clones within health-care settings: a genomic analysis
Helene Johannessen,
Inger Lill Anthonisen,
Nermin Zecic,
Kristin Hegstad,
Trond Egil Ranheim,
Dagfinn Skaare
:
Characterization and Fitness Cost of Tn7100, a Novel Integrative and Conjugative Element Conferring Multidrug Resistance in Haemophilus influenzae
Frontiers in Microbiology 2022
ARKIV /
DOI
Mushtaq T.S. Al-Rubaye,
Jessin Janice,
Jørgen Vildershøj Bjørnholt,
Aleksandra Jakovljev,
Maria Elisabeth Hultström,
Arnfinn Sundsfjord
m.fl.:
Novel genomic islands and a new vanD-subtype in the first sporadic VanD-type vancomycin resistant enterococci in Norway
Tommi Mäklin,
Teemu Kallonen,
Jarno Alanko,
Ørjan Samuelsen,
Kristin Hegstad,
Veli Mäkinen
m.fl.:
Bacterial genomic epidemiology with mixed samples
Sebastiaan J. van Hal,
Rob J.L. Willems,
Theodore Gouliouris,
Susan A. Ballard,
Teresa M. Coque,
Anette M. Hammerum
m.fl.:
The global dissemination of hospital clones of Enterococcus faecium
Bishnu Joshi,
Bhupender Singh,
Aftab Nadeem,
Fatemeh Askarian,
Sun Nyunt Wai,
Mona Johannessen
m.fl.:
Transcriptome profiling of staphylococcus aureus associated extracellular vesicles reveals presence of small RNA-cargo
Frontiers in Molecular Biosciences 13. januar 2021
ARKIV /
DOI
Monika Kumaraswamy,
Kamilla Wiull,
Bishnu Joshi,
George Sakoulas,
Armin Kousha,
Gustav Vaaje-Kolstad
m.fl.:
Bacterial membrane-derived vesicles attenuate vancomycin activity against methicillin-resistant staphylococcus aureus
Theresa Wagner,
Jessin Janice,
Audun Sivertsen,
Ingegerd Sjögren,
Arnfinn Sundsfjord,
Kristin Hegstad
:
Alternative vanHAX promoters and increased vanA-plasmid copy number resurrect silenced glycopeptide resistance in Enterococcus faecium
Journal of Antimicrobial Chemotherapy 2020
ARKIV /
DOI
Kristin Hegstad,
Haima Mylvaganam,
Jessin Janice,
Ellen Haldis Josefsen,
Audun Sivertsen,
Dagfinn Skaare
:
Role of Horizontal Gene Transfer in the Development of Multidrug Resistance in Haemophilus influenzae
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
Theresa Wagner,
Felipe Romero-Saavedra,
Diana Laverde,
Mona Johannessen,
Johannes Hübner,
Kristin Hegstad
:
Enterococcal Membrane Vesicles as Vaccine Candidates
2023
Theresa Wagner,
Anna Kaarina Pöntinen,
Carolin Kornelia Fenzel,
Daniel Engi,
Jessin Janice,
Ana Almeida-Santos
m.fl.:
Competition between commensal Enterococcus faecium and Enterococcus lactis and clinical isolates of E. faecium
2023
Ingeborg Mathiesen,
Anna Kaarina Pöntinen,
Mona Johannessen,
Kristin Hegstad,
Theresa Wagner
:
Characterization of Putative Virulence Factors in Enterococcus faecium
2023
Ingeborg Mathiesen,
Theodor Anton Ross,
Anna Kaarina Pöntinen,
Einar Holsbø,
Michael Kampffmeyer,
Mona Johannessen
m.fl.:
Characterization of Putative Virulence Factors in Enterococcus faecium
2023
Carolin Kornelia Fenzel,
Anna K. Pöntinen,
Mona Johannessen,
Kristin Hegstad,
Theresa Wagner
:
Characterization of competition between commensal and clinical strains of Enterococcus faecium
2023
Jonathan Hira,
Bhupender Singh,
Theresa Maria Wagner,
Kristin Hegstad,
Mona Susan Johannessen,
Christian Stephan Lentz
:
A high-throughput platform for phenotypic profiling of bacteria coupled to single cell-derived growth analysis
2023
Theresa Maria Wagner,
Jan Fredrik Frantzen,
Kristin Hegstad
:
Utvikler potensiell vaksine mot antibiotikaresistent sykehusbakterie
Trygve Grønning,
Kristin Hegstad,
Theresa Maria Wagner
:
Ny forskning kan stoppe fryktet sykehus-bakterie
Espen Morten Viklem Eidum,
Theresa Maria Wagner,
Kristin Hegstad
:
Researchers develop potential vaccine against antibiotic-resistant enterococci
Jan Fredrik Frantzen,
Theresa Maria Wagner,
Kristin Hegstad
:
Utvikler potensiell vaksine mot hissig sykehusbakterie
Kristin Hegstad
:
Linezolidresistens hos enterokokker – mekanismer og diagnostikk
2023
Theresa Maria Wagner,
Anna Kaarina Pöntinen,
Mushtaq T.S. AL Rubaye,
Arnfinn Ståle Sundsfjord,
Kristin Hegstad
:
Adaptive cell wall thickening in Enterococcus faecalis is associated with decreased vancomycin susceptibility
Clinical Microbiology and Infection (CMI) 2023
DOI
Julie Kalveland,
Kristin Hegstad,
Torni Kristin Myrbakk
:
UNN-forskere oppdaget ny mekanisme for antibiotikaresistens
Amalie von BT Heim,
Bjørn Tore Lunestad,
Jessin Janice,
Jørgen Bjørnholt,
Kristin Hegstad,
Cecilie Smith Svanevik
:
Enterococci in marine bivalves from Norway – where do they come from and should we be concerned?
2022
Kristin Hegstad
:
Vancomycin variable resistant enterococci
2022
Kristin Hegstad
:
Tigesyklinresistens hos enterokokker i Norge
2022
Ingeborg Mathiesen,
Mona Johannessen,
Kristin Hegstad,
Theresa Wagner
:
Characterisation of putative virulence factors in Enterococcus faecium
2022
Ingeborg Mathiesen,
Mona Johannessen,
Kristin Hegstad,
Theresa Wagner
:
Characterisation of putative virulence factors in Enterococcus faecium
2022
Theodor Anton Ross,
Anna Kaarina Pöntinen,
Jessin Janice,
Einar Holsbø,
Jukka Corander,
Kristin Hegstad
m.fl.:
Leveraging machine learning for finding novel putative virulence factors in Enterococcus faecium
2022
Bjørg C Haldorsen,
Erika Matuschek,
Jenny Åhman,
Gunnar Kahlmeter,
Arnfinn Sundsfjord,
Kristin Hegstad
:
Performance of the EUCAST disc diffusion method and gradient tests in detection of linezolid susceptibility in Enterococcus faecalis and Enterococcus faecium
2021
Theresa Wagner,
Kristin Hegstad
:
Transiently silenced acquired antimicrobial resistance – an increasing challenge in antimicrobial susceptibility testing
2021
Theresa Wagner,
Jessin Janice James Peter,
Marc Schulz,
Susan A. Ballard,
Anders Goncalves da Silva,
Geoffrey W Coombs
m.fl.:
Australian vancomycin variable E. faecium ST1421 revert to resistance by the use of an alternative vanHAX promoter and increased vanA-plasmid copy number
2021
Theresa Wagner,
Mona Johannessen,
Kristin Hegstad
:
Towards a vaccine based on enterococcal membrane vesicles
2020
Theresa Wagner,
Clement Ajayi,
Mona Johannessen,
Kristin Hegstad,
Gro Grimnes,
Ingrid Hemmingsen
:
Brukermøte 2020
2020
Theresa Wagner,
Clement Ajayi,
Kristin Hegstad,
Mona Johannessen,
Gro Grimnes,
Ingrid Hemmingsen
:
Brukermøte 2019
2019
Bishnu Joshi,
Sun Nyunt Wai,
Mona Johannessen,
Kristin Hegstad
:
Extracellular vesicle -associated small RNA released by Staphylococcus aureus (MSSA476) grown under stress condition
2019
Theresa Wagner,
Mona Johannessen,
Kristin Hegstad
:
Investigating the immune response towards enterococcal membrane vesicles
2019
Theresa Wagner,
Jessin Janice,
Audun Sivertsen,
Ingegerd Sjögren,
Arnfinn Sundsfjord,
Kristin Hegstad
:
The bag of tricks of vancomycin variable enterococci:
an alternative constitutive vanHAX-promoter, varying copy numbers and transferable resistance
2019
Mushtaq Talib Shawi Al-Rubaye,
Jessin Janice,
Iren Høyland Löhr,
Arnfinn Sundsfjord,
Kristin Hegstad
:
THE FIRST VANE VANCOMYCIN RESISTANT ENTEROCOCCUS FAECALIS IN NORWAY
2019
Mushtaq Talib Shawi Al-Rubaye,
Jessin Janice,
Jørgen Vildershøj Bjørnholt,
Oliver Kacelink,
Biørg C. Haldorsen,
Randi M. Nygaard
m.fl.:
POPULATION STRUCTURE OF THE NORWEGIAN VANCOMYCIN RESISTANT AND SENSITIVE ENTEROCOCCI 2010-2015
2019