Blar i NTNU Open på forfatter "Østvik, Ann Elisabet"
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C-C Motif Ligand 20 (CCL20) and C-C Motif Chemokine Receptor 6 (CCR6) in Human Peripheral Blood Mononuclear Cells: Dysregulated in Ulcerative Colitis and a Potential Role for CCL20 in IL-1β Release
Skovdahl, Helene Kolstad; Damås, Jan Kristian; Granlund, Atle van Beelen; Østvik, Ann Elisabet; Doseth, Berit; Bruland, Torunn; Mollnes, Tom Eirik; Sandvik, Arne Kristian (Journal article; Peer reviewed, 2018)The chemokine C-C motif ligand 20 (CCL20) is increased in the colonic mucosa during active inflammatory bowel disease (IBD) and can be found both in the epithelium and immune cells in the lamina propria. The present study ... -
Enhanced expression of CXCL10 in inflammatory bowel disease: Potential role of mucosal toll-like 3 receptor stimulation
Østvik, Ann Elisabet; Granlund, Atle; Bugge, Marit; Nilsen, Nadra; Torp, Sverre Helge; Waldum, Helge; Damås, Jan Kristian; Espevik, Terje; Sandvik, Arne Kristian (Journal article, 2013)We explored the gene expression in colonic biopsies of active and inactive inflammatory bowel disease (IBD), in an extensive material of ulcerative colitis (UC) and Crohn`s disease (CD). The chemokine CXCL10 and its receptor ... -
European guidelines on microscopic colitis: United European Gastroenterology (UEG) and European Microscopic Colitis Group (EMCG) statements and recommendations
Miehlke, Stephan; Guagnozzi, Danila; Zabana, Yamile; Tontini, Gian E; Fiehn, Anne-Marie Kanstrup; Wildt, Signe; Bohr, Johan; Bonderup, Ole K.; Bouma, Gerd; D’Amato, Mauro; Engel, Peter Johan Heiberg; Fernandez-Banares, Fernando; Macaigne, Gilles; Hjortswang, Henrik; Hultgren-Hörnquist, Elisabeth; Koulaouzidis, Anastasios; Kupcinskas, Jouzas; Landolfi, Stefania; Latella, Giovanni; Lucendo, Alfredo; Lyutakov, Ivan; Madisch, Ahmed; Magro, Fernando; Marlicz, Wojciech; Mihaly, Emese; Munck, Lars Kristian; Østvik, Ann Elisabet; Patai, Árpád V; Penchev, Plamen; Skonieczna-Żydecka, Karolina; Verhaegh, Bas; Münch, Andreas (Peer reviewed; Journal article, 2020)Introduction Microscopic colitis is a chronic inflammatory bowel disease characterised by normal or almost normal endoscopic appearance of the colon, chronic watery, nonbloody diarrhoea and distinct histological abnormalities, ... -
Expression of CCL20 and Its Corresponding Receptor CCR6 Is Enhanced in Active Inflammatory Bowel Disease, and TLR3 Mediates CCL20 Expression in Colonic Epithelial Cells
Skovdahl, Helene Kolstad; Granlund, Atle Van Beelen; Østvik, Ann Elisabet; Bakke, Ingunn; Bruland, Torunn; Torp, Sverre Helge; Damås, Jan Kristian; Sandvik, Arne Kristian (Journal article; Peer reviewed, 2015)Background: The chemokine CCL20 and its receptor CCR6 are putative drug targets in inflammatory bowel disease, and CCL20 is a novel IBD predilection gene. Previous findings on the CCL20 response in these diseases are ... -
Expression of PPARγ in inflammatory bowel disease: a role in regulating colonic inflammation
Eriksen, Kaja Sørgård (Master thesis, 2017)Background: Inflammatory bowel disease (IBD) is a collective term for the two entities, ulcerative colitis (UC) and Crohn’s disease (CD). They are both characterized by a relapsing inflammation causing destruction of the ... -
Expression of Toll-like receptor-3 is enhanced in active inflammatory bowel disease and mediates the excessive release of lipocalin 2
Østvik, Ann Elisabet; Granlund, Atle Van Beelen; Torp, Sverre Helge; Flatberg, Arnar; Beisvag, Vidar; Waldum, Helge; Flo, Trude Helen; Espevik, Terje; Damås, Jan Kristian; Sandvik, Arne Kristian (Journal article; Peer reviewed, 2013)Anti-microbial peptides might influence the pathogenesis and course of inflammatory bowel disease (IBD). We sought to clarify the role of the anti-microbial glycoprotein lipocalin 2 (LCN2) in the colon by determining its ... -
Fecal neutrophil gelatinase-associated lipocalin as a biomarker for inflammatory bowel disease
Thorsvik, Silje; Damås, Jan Kristian; Granlund, Atle van Beelen; Flo, Trude Helen; Bergh, Kåre; Østvik, Ann Elisabet; Sandvik, Arne Kristian (Journal article; Peer reviewed, 2017)Background and Aim Accurate, noninvasive biomarkers are needed to diagnose and monitor inflammatory bowel disease (IBD). Neutrophil gelatinase-associated lipocalin (NGAL), also known as lipocalin 2, is expressed in inflamed ... -
Host-Viral Interactions in the Pathogenesis of Ulcerative Colitis
Bruland, Torunn; Østvik, Ann Elisabet; Sandvik, Arne Kristian; Hansen, Marianne Dore (Peer reviewed; Journal article, 2021)Ulcerative colitis is characterized by relapsing and remitting colonic mucosal inflammation. During the early stages of viral infection, innate immune defenses are activated, leading to the rapid release of cytokines and ... -
Innate Immune Responses in Colonic Mucosa During Inflammatory Bowel Disease - Effects of TLR3 Signaling
Østvik, Ann Elisabet (Doktoravhandlinger ved NTNU, 1503-8181; 2014:118, Doctoral thesis, 2014) -
Intestinal epithelial cells express immunomodulatory ISG15 during active ulcerative colitis and Crohn's disease
Østvik, Ann Elisabet; Svendsen, Tarjei Dahl; Granlund, Atle van Beelen; Doseth, Berit; Skovdahl, Helene Kolstad; Bakke, Ingunn; Thorsvik, Silje; Afroz, Wahida; Walaas, Gunnar Andreas; Mollnes, Tom Eirik; Gustafsson, Björn; Sandvik, Arne Kristian; Bruland, Torunn (Peer reviewed; Journal article, 2020)Background and Aims Intestinal epithelial cells [IECs] secrete cytokines that recruit immune cells to the mucosa and regulate immune responses that drive inflammation in inflammatory bowel disease [IBD]. However, experiments ... -
Mucosal and faecal neutrophil gelatinase-associated lipocalin as potential biomarkers for collagenous colitis
Bakke, Ingunn; Walaas, Gunnar Andreas; Bruland, Torunn; Røyset, Elin Synnøve; Granlund, Atle van Beelen; Escudero-Hernandez, Celia; Thorsvik, Silje; Münch, Andreas; Sandvik, Arne Kristian; Østvik, Ann Elisabet (Peer reviewed; Journal article, 2021)Background Collagenous colitis (CC) is an inflammatory bowel disease where chronic diarrhoea is the main symptom. Diagnostic markers distinguishing between CC and other causes of chronic diarrhoea remain elusive. This study ... -
Mucosal toll-like receptor 3-dependent synthesis of complement factor B and systemic complement activation in inflammatory bowel disease
Østvik, Ann Elisabet; Granlund, Atle Van Beelen; Gustafsson, Björn; Torp, Sverre Helge; Espevik, Terje; Mollnes, Tom Eirik; Damås, Jan Kristian; Sandvik, Arne Kristian (Journal article, 2014)Background: Recent studies link Toll-like receptor 3 (TLR3) to the pathogenesis of inflammatory bowel disease (IBD). Screening TLR3-agonist response in an intestinal epithelial cell line, we found complement factor B mRNA ... -
Transcriptomic Profiling of Collagenous Colitis Identifies Hallmarks of Nondestructive Inflammatory Bowel Disease
Escudero-hernandez, Celia; Granlund, Atle van Beelen; Bruland, Torunn; Sandvik, Arne Kristian; Koch, Stefan; Østvik, Ann Elisabet; Munch, Andreas (Peer reviewed; Journal article, 2021)Background and aims: The pathophysiology of the inflammatory bowel disease collagenous colitis (CC) is poorly described. Our aim was to use RNA sequencing of mucosal samples from patients with active CC, CC in remission, ... -
Ulcer-associated cell lineage expresses genes involved in regeneration and is hallmarked by high neutrophil gelatinase-associated lipocalin (NGAL) levels
Thorsvik, Silje; Granlund, Atle van Beelen; Svendsen, Tarjei Dahl; Bakke, Ingunn; Røyset, Elin Synnøve; Flo, Trude Helen; Damås, Jan Kristian; Østvik, Ann Elisabet; Bruland, Torunn; Sandvik, Arne Kristian (Peer reviewed; Journal article, 2019)Neutrophil gelatinase‐associated lipocalin (NGAL), also known as Lipocalin 2, is an antimicrobial protein, encoded by the gene LCN2, strongly upregulated in inflammatory bowel disease (IBD) and a promising biomarker for ... -
The water channel aquaporin 8 is a critical regulator of intestinal fluid homeostasis in collagenous colitis
Escudero-Hernandez, Celia; Münch, Andreas; Østvik, Ann Elisabet; Granlund, Atle van Beelen; Koch, Stefan (Peer reviewed; Journal article, 2020)Background and Aims: Diarrhoea is a common, debilitating symptom of gastrointestinal disorders. Pathomechanisms probably involve defects in trans-epithelial water transport, but the role of aquaporin [AQP] family water ... -
Whole Genome Gene Expression Meta-Analysis of Inflammatory Bowel Disease Colon Mucosa Demonstrates Lack of Major Differences between Crohn's Disease and Ulcerative Colitis
Granlund, Atle Van Beelen; Flatberg, Arnar; Østvik, Ann Elisabet; Drozdov, Ignat; Gustafsson, Björn; Kidd, Mark; Beisvag, Vidar; Torp, Sverre Helge; Waldum, Helge; Martinsen, Tom Christian; Damås, Jan Kristian; Espevik, Terje; Sandvik, Arne Kristian (Journal article; Peer reviewed, 2013)Background: In inflammatory bowel disease (IBD), genetic susceptibility together with environmental factors disturbs gut homeostasis producing chronic inflammation. The two main IBD subtypes are Ulcerative colitis (UC) ...