Blar i NTNU Open på forfatter "Gustafsson, Björn"
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Gene Network Inference and Biochemical Assessment Delineates GPCR Pathways and CREB Targets in Small Intestinal Neuroendocrine Neoplasia
Drozdov, Ignat; Svejda, Bernhard; Gustafsson, Björn; Mane, S; Pfragner, Roswitha; Kidd, Mark; Modlin, Irvin M (Journal article; Peer reviewed, 2011)Small intestinal (SI) neuroendocrine tumors (NET) are increasing in incidence, however little is known about their biology. High throughput techniques such as inference of gene regulatory networks from microarray experiments ... -
Guanylate cyclase-C signaling in Inflammatory Bowel Disease: Cellular expression of guanylin and uroguanylin encoding genes in human and rat duodenum and colon
Brenna, Øystein (Doctoral theses at NTNU;2016:131, Doctoral thesis, 2016) -
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 ... -
Microencapsulation of small intestinal neuroendocrine neoplasm cells for tumor model studies
Rokstad, Anne Mari; Gustafsson, Björn; Espevik, Terje; Bakke, Ingunn; Pfragner, Roswitha; Svejda, Bernhard; Modlin, Irvin M; Kidd, Mark (Journal article; Peer reviewed, 2012)Basic cancer research is dependent on reliable in vitro and in vivo tumor models. The serotonin (5‐HT) producing small intestinal neuroendocrine tumor cell line KRJ‐1 has been used in in vitro proliferation and secretion ... -
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 ... -
Not only stem cells, but also mature cells, particularly neuroendocrine cells, may develop into tumours: time for a paradigm shift
Waldum, Helge; Öberg, Kjell; Sørdal, Øystein Finset; Sandvik, Arne Kristian; Gustafsson, Björn; Mjønes, Patricia; Fossmark, Reidar (Journal article; Peer reviewed, 2018)Stem cells are considered the origin of neoplasms in general, and malignant tumours in particular, and the stage at which the stem cells stop their differentiation determines the degree of malignancy. However, there is ... -
Relevance of TNBS-Colitis in Rats: A Methodological Study with Endoscopic, Historical and Transcripttomic Characterization and Correlation to IBD
Brenna, Øystein; Furnes, Marianne Waldum; Drozdov, Ignat; Granlund, Atle Van Beelen; Flatberg, Arnar; Sandvik, Arne Kristian; Zwiggelaar, Rosalie; Mårvik, Ronald; Nordrum, Ivar Skjåk; Kidd, Mark; Gustafsson, Björn (Journal article; Peer reviewed, 2013)Background: Rectal instillation of trinitrobenzene sulphonic acid (TNBS) in ethanol is an established model for inflammatory bowel disease (IBD). We aimed to 1) set up a TNBS-colitis protocol resulting in an endoscopic ... -
The guanylate cyclase-C signaling pathway is down-regulated in inflammatory bowel disease
Brenna, Øystein; Bruland, Torunn; Furnes, Marianne Waldum; Granlund, Atle Van Beelen; Drozdov, Ignat; Emgård, Johanna; Brønstad, Gunnar; Kidd, Mark; Sandvik, Arne Kristian; Gustafsson, Björn (Journal article; Peer reviewed, 2015)Objective. Activation of membrane receptor guanylate cyclase-C (GC-C) is implicated in gastrointestinal fluid and electrolyte balance, preservation of intestinal barrier integrity, anti-trophic effects and inhibition of ... -
The peroxisome proliferator-activated receptor (PPAR) alpha agonist fenofibrate maintains bone mass, while the PPAR gamma agonist pioglitazone exaggerates bone loss, in ovariectomized rats
Stunes, Astrid Kamilla; Westbroek, Irene; Gustafsson, Björn; Fossmark, Reidar; Waarsing, Jan H; Eriksen, Erik Fink; Petzold, Christiane; Reseland, Janne Elin; Syversen, Unni (Journal article; Peer reviewed, 2011)Background Activation of peroxisome proliferator-activated receptor (PPAR)gamma is associated with bone loss and increased fracture risk, while PPARalpha activation seems to have positive skeletal effects. To further ... -
The Stimulatory Adenosine Receptor ADORA2B Regulates Serotonin (5-HT) Synthesis and Release in Oxygen-Depleted EC Cells in Inflammatory Bowel Disease
Damen, Rikard; Haugen, Martin; Svejda, Bernhard; Alaimo, Daniele; Brenna, Øystein; Pfragner, Roswitha; Gustafsson, Björn; Kidd, Mark (Journal article; Peer reviewed, 2013)Objective: We recently demonstrated that hypoxia, a key feature of IBD, increases enterochromaffin (EC) cell 5-HT secretion, which is also physiologically regulated by the ADORA2B mechanoreceptor. Since hypoxia is ... -
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) ...