Publications by authors named "Peter Johnsen"

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Efficacy and safety of microbiota-targeted therapeutics in autoimmune and inflammatory rheumatic diseases: protocol for a systematic review and meta-analysis of randomised controlled trials.
Maja Skov Kragsnaes, Benoit Thomas P Gilbert, Bjørk Khaliqi Sofíudóttir, Christopher Michael Rooney, Sebrina Maj-Britt Hansen, Peter Holger Johnsen

BMJ Open· December 2025

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Faecal microbiota transplantation for primary Clostridioides difficile infection.
Sebastian Bø, Håvard Wiig, Frederik Emil Juul, Kjetil K Garborg, Peter Holger Johnsen

Tidsskr Nor Laegeforen· November 2025

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Fecal Microbiota Transplantation Versus Vancomycin for Primary Infection : A Randomized Controlled Trial.
Frederik Emil Juul, Michael Bretthauer, Peter H Johnsen, Faye Samy, Kristian Tonby

Ann Intern Med· July 2025

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The effect of microbial metabolites from colonic protein fermentation on bacteria-induced cytokine production in dendritic cells.
Zhuqing Xie, Danny Blichfeldt Eriksen, Peter Riber Johnsen, Dennis Sandris Nielsen, Hanne Frøkiær

Biofactors· May 2025

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Effects of lipid-based nutrient supplements on gut markers in stunted children: Secondary analysis of a randomised trial.
Hannah Pesu, Joseph Mbabazi, Rolland Mutumba, Otto Savolainen, Peter R Johnsen

J Pediatr Gastroenterol Nutr· May 2025

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Cytokines and appetite-regulating hormones in human milk and associations with infant growth across four sites in a longitudinal cohort: The Mothers, Infants and Lactation Quality Study.
Sophie Hilario Christensen, Jack Ivor Lewis, Hanne Frøkiær, Peter Riber Johnsen, Janet M Peerson

PLoS One· May 2025

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Faecal microbiota transplantation (FMT) in Norwegian outpatients with mild to severe myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS): protocol for a 12-month randomised double-blind placebo-controlled trial.
Linn Skjevling, Rasmus Goll, Hege Marie Hanssen, Peter Holger Johnsen

BMJ Open· June 2024

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Erratum: "A beamline for ultrafast extreme ultraviolet magneto-optical spectroscopy in reflection near the shot noise limit" [Rev. Sci. Instrum. 94, 033001 (2023)].
Peter C Johnsen, Sinéad A Ryan, Christian Gentry, Anya Grafov, Henry Kapteyn

Rev Sci Instrum· January 2024

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Randomised, placebo-controlled, double-blinded trial of fecal microbiota transplantation in severe obesity: a study protocol.
Hege Marie Hanssen, Maria Serafia Fjellstad, Linn Skjevling, Peter Holger Johnsen, Bård Kulseng

BMJ Open· December 2023

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Optically controlling the competition between spin flips and intersite spin transfer in a Heusler half-metal on sub-100-fs time scales.
Sinéad A Ryan, Peter C Johnsen, Mohamed F Elhanoty, Anya Grafov, Na Li

Sci Adv· November 2023

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Colonic distribution of FMT by different enema procedures compared to colonoscopy - proof of concept study using contrast fluid.
Linn Kallbekken Skjevling, Hege Marie Hanssen, Per Christian Valle, Rasmus Goll, Frederik Emil Juul, Peter Holger Johnsen

BMC Gastroenterol· October 2023

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Protein Concentration Affects the Food Allergen γ-Conglutin Uptake and Bacteria-Induced Cytokine Production in Dendritic Cells.
Giuditta C Heinzl, Danny Blichfeldt Eriksen, Peter Riber Johnsen, Alessio Scarafoni, Hanne Frøkiær

Biomolecules· October 2023

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[Gut microbiota and intestinal disease –a sober warning].
Frederik Emil Juul, Johannes Espolin Roksund Hov, Marius Trøseid, Peter H Johnsen, Jørgen Valeur

Tidsskr Nor Laegeforen· June 2023

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A beamline for ultrafast extreme ultraviolet magneto-optical spectroscopy in reflection near the shot noise limit.
Peter C Johnsen, Sinéad A Ryan, Christian Gentry, Anya Grafov, Henry Kapteyn

Rev Sci Instrum· March 2023

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Investigation of the Effects of Monomeric and Dimeric Stilbenoids on Bacteria-Induced Cytokines and LPS-Induced ROS Formation in Bone Marrow-Derived Dendritic Cells.
Peter Riber Johnsen, Cecilia Pinna, Luce Mattio, Mathilde Bech Strube, Mattia Di Nunzio

Int J Mol Sci· February 2023

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Soluble C-Type Lectin-Receptor Ligands Stimulate ROS Production in Dendritic Cells and Potentiate Killing of MRSA as Well as the MRSA Induced IL-12 Production.
Helene M S Eld, Peter R Johnsen, Emilie M Nielsen, Frederikke Z Jørgensen, Marie Lindstrøm-Svendsen

Front Immunol· April 2022

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The use of Faecal Microbiota Transplantation (FMT) in Europe: A Europe-wide survey.
Simon Mark Dahl Baunwall, Elisabeth M Terveer, Jens Frederik Dahlerup, Christian Erikstrup, Perttu Arkkila, Peter Holger Johnsen

Lancet Reg Health Eur· October 2021

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Cefoxitin treatment of MRSA leads to a shift in the IL-12/IL-23 production pattern in dendritic cells by a mechanism involving changes in the MAPK signaling.
Helene M S Eld, Emilie M Nielsen, Peter R Johnsen, Mauro Marengo, Ida W Kamper

Mol Immunol· June 2021

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Nondestructive, high-resolution, chemically specific 3D nanostructure characterization using phase-sensitive EUV imaging reflectometry.
Michael Tanksalvala, Christina L Porter, Yuka Esashi, Bin Wang, Nicholas W Jenkins, Peter Johnsen

Sci Adv· January 2021

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Effects of fecal microbiota transplantation in subjects with irritable bowel syndrome are mirrored by changes in gut microbiome.
Rasmus Goll, Peter Holger Johnsen, Erik Hjerde, Joseph Diab, Per Christian Valle

Gut Microbes· November 2020

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The effect of fecal microbiota transplantation on IBS related quality of life and fatigue in moderate to severe non-constipated irritable bowel: Secondary endpoints of a double blind, randomized, placebo-controlled trial.
Peter Holger Johnsen, Frank Hilpüsch, Per Christian Valle, Rasmus Goll

EBioMedicine· January 2020

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Safety of a meningococcal group B vaccine used in response to two university outbreaks.
Jonathan Duffy, Peter Johnsen, Mary Ferris, Mary Miller, Kevin Leighton

J Am Coll Health· April 2019

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Faecal microbiota transplantation versus placebo for moderate-to-severe irritable bowel syndrome: a double-blind, randomised, placebo-controlled, parallel-group, single-centre trial.
Peter Holger Johnsen, Frank Hilpüsch, Jorunn Pauline Cavanagh, Ingrid Sande Leikanger, Caroline Kolstad

Lancet Gastroenterol Hepatol· January 2018

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Microscopic colitis: a missed diagnosis among patients with moderate to severe irritable bowel syndrome.
Frank Hilpüsch, Peter Holger Johnsen, Rasmus Goll, Per Christian Valle, Sveinung Wergeland Sørbye

Scand J Gastroenterol· February 2017

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Immunogenicity of a Meningococcal B Vaccine during a University Outbreak.
Nicole E Basta, Adel A F Mahmoud, Julian Wolfson, Alexander Ploss, Brigitte L Heller, Peter Johnsen

N Engl J Med· July 2016

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