Blar i Faculty of Medicine på forfatter "Omdal, Roald"
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Anti-HMGB1 auto-Abs influence fatigue in patients with Crohn’s disease
Kvivik, Ingeborg; Grimstad, Tore Bjørn; Jonsson, Grete; Kvaløy, Jan T.; Omdal, Roald (Journal article; Peer reviewed, 2021)Fatigue is common in all chronic inflammatory and autoimmune diseases. A conceptual model for understanding the biological basis of fatigue describes it as being a part of the sickness behaviour response generated by ... -
Complement C4 Copy Number Variation is Linked to SSA/Ro and SSB/La Autoantibodies in Systemic Inflammatory Autoimmune Diseases
Lundtoft, Christian; Pucholt, Pascal; Martin, Myriam; Bianchi, Matteo; Lundström, Emeli; Eloranta, Maija-Leena; Sandling, Johanna K.; Sjöwall, Christopher; Jönsen, Andreas; Gunnarsson, Iva; Rantapää-Dahlqvist, Solbritt; Bengtsson, Anders A.; Leonard, Dag; Baecklund, Eva; Jonsson, Roland; Hammenfors, Daniel; Forsblad-d'Elia, Helena; Eriksson, Per; Mandl, Thomas; Magnusson Bucher, Sara; Norheim, Katrine Brække; Johnsen, Svein Joar Auglæn; Omdal, Roald; Kvarnström, Marika; Wahren Herlenius, Marie Elisabeth; Notarnicola, Antonella; Andersson, Anna Helena; Molberg, Øyvind; Diederichsen, Louise Pyndt; Almlöf, Jonas; Syvänen, Ann-Christine; Kozyrev, Sergey V.; Lindblad-Toh, Kerstin; Rönnblom, Lars; Brokstad, Karl Albert; Skarstein, Kathrine; Jonsson, Malin Viktoria; Appel, Silke; Aqrawi, Lara A.; Jensen, Janicke Liaaen; Palm, Øyvind; Nilsson, Birgitta Blakstad; Blom, Anna M.; Lundberg, Ingrid E.; Nordmark, Gunnel; Diaz-Gallo, Lina Marcela; Svenungsson, Elisabet; Rönnblom, Lars (Journal article; Peer reviewed, 2022)Objective Copy number variation of the C4 complement components, C4A and C4B, has been associated with systemic inflammatory autoimmune diseases. This study was undertaken to investigate whether C4 copy number variation ... -
Determination of lower cut-off levels of adalimumab associated with biochemical remission in Crohn's disease
Carlsen, Arne; Omdal, Roald; Karlsen, Lars Normann; Kvaløy, Jan Terje; Aabakken, Lars; Steinsbø, Øyvind; Bolstad, Nils; Warren, David; Lundin, Knut Erik Aslaksen; Grimstad, Tore (Peer reviewed; Journal article, 2020)Background and Aim: Adalimumab is administered and dosed using a standardized treatment regimen. Although therapeutic drug monitoring (TDM) may help optimize treatment efficacy, the lower cut‐off concentration of adalimumab ... -
The Effect of Biological Treatment on Fatigue in Inflammatory Bowel Disease: A Systematic Review and Meta-analysis
Skjellerudsveen, Berit Mære; Skoie, Inger Marie; Dalen, Ingvild; Grimstad, Tore Bjørn; Omdal, Roald (Journal article; Peer reviewed, 2023)Background: Fatigue is a frequent complaint in patients with inflammatory bowel disease. Biological drugs have demonstrated beneficial effects on some extraintestinal manifestations, but the effect on fatigue is not ... -
Fatigue in celiac disease: A review of the literature
Skjellerudsveen, Berit M.; Omdal, Roald; Grimstad, Tore (Peer reviewed; Journal article, 2019)Fatigue is increasingly recognized as a significant problem in patients with chronic inflammatory and autoimmune diseases. In celiac disease, a chronic immune‐mediated disease triggered by dietary gluten, conflicting ... -
Fatigue in primary Sjögren’s syndrome: A proteomic pilot study of cerebrospinal fluid
Larssen, Eivind; Brede, Cato; Hjelle, Anne; Tjensvoll, Anne Bolette; Norheim, Katrine Brække; Bårdsen, Kjetil; Jonsdottir, Kristin; Ruoff, Peter; Omdal, Roald; Nilsen, Mari Mæland (Journal article; Peer reviewed, 2019)Objectives: Fatigue is a frequent and often disabling phenomenon that occurs in patients with chronic inflammatory and immunological diseases, and the underlying biological mechanisms are largely unknown. Because fatigue ... -
Fatigue in psoriasis: a phenomenon to be explored
Skoie, Inger Marie; Ternowitz, Thomas; Jonsson, Grete; Norheim, Katrine Brække; Omdal, Roald (Peer reviewed; Journal article, 2015-05)Fatigue is a prevalent and substantial phenomenon in many patients with chronic inflammatory diseases, often rated by patients as the most troublesome symptom and aspect of their disease. It frequently interferes with ... -
Fatigue: a frequent and biologically based phenomenon in newly diagnosed celiac disease
Skjellerudsveen, Berit Mære; Omdal, Roald; Hetta, Anne Kristine; Kvaløy, Jan Terje; Aabakken, Lars; Skoie, Inger Marie; Grimstad, Tore Bjørn (Journal article; Peer reviewed, 2022)Fatigue is increasingly recognized as a major complaint in patients with chronic inflammatory and autoimmune diseases. Although fatigue is assumed to represent a significant problem in celiac disease, existing knowledge ... -
Genetic and clinical basis for two distinct subtypes of primary Sjögren's syndrome
Thorlacius, Gudny Ella; Hultin-Rosenberg, Lina; Sandling, Johanna K.; Bianchi, Matteo; Imgenberg-Kreuz, Juliana; Theander, Elke; Kvarnström, Marika; Forsblad-d’Elia, Helena; Bucher, Sara Magnusson; Norheim, Katrine Brække; Johnsen, Svein Joar Auglænd; Hammenfors, Sten Daniel; Skarstein, Kathrine; Jonsson, Malin V; Bäcklund, Eva; consortium, the DISSECT; meadows, jennifer r; Rantapää-Dahlqvist, Solbritt; Mandl, Thomas; Eriksson, Per; Omdal, Roald; Jonsson, Sten Ture Roland; Lindblad-Toh, Kerstin; Rönnblom, Lars; Wahren-Herlenius, Marie; Nordmark, Gunnel (Journal article; Peer reviewed, 2020)Objectives Clinical presentation of primary Sjögren’s syndrome (pSS) varies considerably. A shortage of evidence-based objective markers hinders efficient drug development and most clinical trials have failed to reach ... -
Genetic variants at the RTP4/MASP1 locus are associated with fatigue in Scandinavian patients with primary Sjögren’s syndrome
Norheim, Katrine Brække; Imgenberg-Kreuz, Juliana; Alexsson, Andrei; Johnsen, Svein Joar Auglæn; Bårdsen, Kjetil; Brun, Johan Gorgas; Dehkordi, Rezvan Kiani; Theander, Elke; Mandl, Thomas; Jonsson, Roland; Ng, Wan-Fai; Lessard, Christopher J; Rasmussen, Astrid; Sivilis, Kathy; Rönnblom, Lars; Omdal, Roald (Journal article; Peer reviewed, 2021)Objectives Fatigue is common and severe in primary Sjögren’s syndrome (pSS). The aim of this study was to identify genetic determinants of fatigue in pSS through a genome-wide association study. Methods Patients with ... -
Genome-wide association study identifies Sjögren’s risk loci with functional implications in immune and glandular cells
Khatri, Bhuwan; Tessneer, Kandice L.; Rasmussen, Astrid; Aghakhanian, Farhang; Reksten, Tove Ragna; Adler, Adam; Alevizos, Ilias; Anaya, Juan-Manuel; Aqrawi, Lara A.; Baecklund, Eva; Brun, Johan Gorgas; Bucher, Sara Magnusson; Eloranta, Maija-Leena; Engelke, Fiona; Forsblad-d’Elia, Helena; Glenn, Stuart B.; Hammenfors, Daniel; Imgenberg-Kreuz, Juliana; Jensen, Janicke Liaaen; Johnsen, Svein Joar Auglæn; Jonsson, Malin Viktoria; Kvarnström, Marika; Kelly, Jennifer A.; Li, He; Mandl, Thomas; Martín, Javier; Nocturne, Gaétane; Norheim, Katrine Brække; Palm, Øyvind; Skarstein, Kathrine; Stolarczyk, Anna M.; Taylor, Kimberly E.; Teruel, Maria; Theander, Elke; Venuturupalli, Swamy; Wallace, Daniel J.; Grundahl, Kiely M.; Hefner, Kimberly S.; Radfar, Lida; Lewis, David M.; Stone, Donald U.; Kaufman, C. Erick; Brennan, Michael T.; Guthridge, Joel M.; James, Judith A.; Scofield, R. Hal; Gaffney, Patrick M.; Criswell, Lindsey A.; Jonsson, Roland; Eriksson, Per; Bowman, Simon J.; Omdal, Roald; Rönnblom, Lars; Warner, Blake; Rischmueller, Maureen; Witte, Torsten; Farris, A. Darise; Mariette, Xavier; Alarcon-Riquelme, Marta E.; Shiboski, Caroline H.; Herlenius, Marie Elisabeth Wahren; Ng, Wan-Fai; Sivils, Kathy L.; Adrianto, Indra; Nordmark, Gunnel; Lessard, Christopher J. (Journal article; Peer reviewed, 2022)Sjögren’s disease is a complex autoimmune disease with twelve established susceptibility loci. This genome-wide association study (GWAS) identifies ten novel genome-wide significant (GWS) regions in Sjögren’s cases of ... -
Heat shock proteins and chronic fatigue in primary Sjögren's syndrome
Bårdsen, Kjetil; Mæland, Mari; Kvaløy, Jan Terje; Norheim, Katrine Brække; Jonsson, Grete; Omdal, Roald (Peer reviewed; Journal article, 2016)Fatigue occurs frequently in patients with cancer, neurological diseases and chronic inflammatory diseases, but the biological mechanisms that lead to and regulate fatigue are largely unknown. When the innate immune system ... -
Heat-shock protein 90α in plasma reflects severity of fatigue in patients with Crohn’s disease
Grimstad, Tore; Kvivik, Ingeborg; Kvaløy, Jan Terje; Aabakken, Lars; Omdal, Roald (Peer reviewed; Journal article, 2020)Heat-shock proteins (HSPs) are evolutionarily conserved proteins with important cellular homeostasis functions during harmful conditions, including inflammation. Some HSPs are secreted extracellularly and act on distant ... -
High mobility group box 1 and a network of other biomolecules influence fatigue in patients with Crohn’s disease
Kvivik, Ingeborg; Grimstad, Tore Bjørn; Bårdsen, Kjetil; Jonsson, Grete; Kvaløy, Jan Terje; Omdal, Roald (Journal article; Peer reviewed, 2023)Background Fatigue is common in patients with chronic inflammatory and autoimmune diseases, often with a severe impact on the patient’s daily life. From a biological point of view, fatigue can be regarded as an element ... -
Identification and functional characterization of a novel susceptibility locus for small vessel vasculitis with MPO-ANCA
Dahlqvist, Johanna; Ekman, Diana; Sennblad, Bengt; Kozyrev, Sergey V.; Nordin, Jessika; Karlsson, Åsa; Meadows, Jennifer R. S.; Hellbacher, Erik; Rantapää-Dahlqvist, Solbritt; Berglin, Ewa; Stegmayr, Bernd; Haslund, Bo; Palm, Øyvind; Haukeland, Hilde; Gunnarsson, Iva; Bruchfeld, Annette; Segelmark, Mårten; Ohlsson, Sophie; Mohammad, Aladdin J.; Svärd, Anna Jessica; Pullerits, Rille; Herlitz, Hans; Söderbergh, Annika; Pielberg, Gerli Rosengren; Rosenberg, Lina Hultin; Bianchi, Matteo; Muren, Eva; Omdal, Roald; Jonsson, Roland; Eloranta, Maija-Leena; Rönnblom, Lars; Söderkvist, Peter; Knight, Ann; Eriksson, Per; Lindblad-Toh, Kerstin (Journal article; Peer reviewed, 2021)Objective To identify and characterize genetic loci associated with the risk of developing ANCA-associated vasculitides (AAV). Methods Genetic association analyses were performed after Illumina sequencing of 1853 genes ... -
Interleukin-1 Inhibition and Fatigue in Primary Sjögren's Syndrome – A Double Blind, Randomised Clinical Trial
Norheim, Katrine Brække; Harboe, Erna; Gøransson, Lasse Gunnar; Omdal, Roald (Peer reviewed; Journal article, 2012)Objectives Fatigue is a major cause of disability in primary Sjögren's syndrome (pSS). Fatigue has similarities with sickness behaviour in animals; the latter mediated by pro-inflammatory cytokines, in particular interleukin ... -
Interleukin-1-related activity and hypocretin-1 in cerebrospinal fluid contribute to fatigue in primary Sjögren’s syndrome
Bårdsen, Kjetil; Brede, Cato; Kvivik, Ingeborg; Kvaløy, Jan Terje; Jonsdottir, Kristin; Tjensvoll, Anne Bolette; Ruoff, Peter; Omdal, Roald (Journal article; Peer reviewed, 2019)Background Fatigue is a common and sometimes debilitating phenomenon in primary Sjögren’s syndrome (pSS) and other chronic inflammatory diseases. We aimed to investigate how IL-1 β-related molecules and the neuropeptide ... -
Less, but not gone—gluten-free diet effects on fatigue in celiac disease: a prospective controlled study
Skjellerudsveen, Berit Mære; Omdal, Roald; Hetta, Anne Kristine; Kvaløy, Jan Terje; Aabakken, Lars; Skoie, Inger Marie; Grimstad, Tore Bjørn (Journal article; Peer reviewed, 2023)Introduction: Fatigue is a frequent complaint in patients with celiac disease. A gluten-free diet is the only established treatment for celiac disease, but how this diet influences fatigue is uncertain. We aimed to investigate ... -
Molecular pathways in patients with systemic lupus erythematosus revealed by gene-centred DNA sequencing
Sandling, Johanna K.; Pucholt, Pascal; Hultin Rosenberg, Lina; Farias, Fabiana H.G.; Kozyrev, Sergey V.; Eloranta, Maija-Leena; Alexsson, Andrei; Bianchi, Matteo; Padyukov, Leonid; Bengtsson, Christine; Jonsson, Roland; Omdal, Roald; Lie, Benedicte Alexandra; Massarenti, Laura; Steffensen, Rudi; Jakobsen, Marianne A.; Lillevang, Søren T.; Lerang, Karoline; Molberg, Øyvind; Voss, Anne; Troldborg, Anne; Jacobsen, Søren; Syvänen, Ann-Christine; Jönsen, Andreas; Gunnarsson, Iva; Svenungsson, Elisabet; Rantapää-Dahlqvist, Solbritt; Bengtsson, Anders A.; Sjöwall, Christopher; Leonard, Dag; Lindblad-Toh, Kerstin; Rönnblom, Lars (Journal article, 2021)Objectives Systemic lupus erythematosus (SLE) is an autoimmune disease with extensive heterogeneity in disease presentation between patients, which is likely due to an underlying molecular diversity. Here, we aimed at ... -
Neurofilament light is a biomarker of brain involvement in lupus and primary Sjögren’s syndrome
Tjensvoll, Anne Bolette; Lauvsnes, Maria Boge; Zetterberg, Henrik; Kvaløy, Jan Terje; Kvivik, Ingeborg; Maroni, Stian; Greve, Ole Jacob; Beyer, Mona K.; Hirohata, Shunsei; Putterman, Chaim; Alves, Guido Werner; Harboe, Erna; Blennow, Kaj; Gøransson, Lasse; Omdal, Roald (Journal article; Peer reviewed, 2020)Background To test the hypothesis that neurofilament light (NfL) in CSF is a biomarker of CNS involvement in patients with systemic lupus erythematosus (SLE) and primary Sjögren’s syndrome (pSS), we measured NfL in CSF ...