Blar i NTNU Open på forfatter "Otterdal, Kari"

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    • A Complex Interaction between Rickettsia conorii and Dickkopf-1 - Potential Role in Immune Evasion Mechanisms in Endothelial Cells 

      Astrup, Elisabeth; Lekva, Tove; Davi, Giovanni; Otterdal, Kari; Santilli, Francesca; Øie, Erik; Halvorsen, Bente; Damås, Jan Kristian; Raoult, Didier; Vitale, Giustina; Olano, Juan P; Ueland, Thor; Aukrust, Pål (Journal article; Peer reviewed, 2012)
      The pathophysiological hallmark of spotted fever group rickettsioses comprises vascular inflammation. Based on the emerging importance of the wingless (Wnt) pathways in inflammation and vascular biology, we hypothesized ...

    • Cytokine Network in Scrub Typhus: High Levels of Interleukin-8 Are Associated with Disease Severity and Mortality 

      Astrup, Elisabeth; Janardhanan, J; Otterdal, Kari; Ueland, Thor; Prakash, JAJ; Lekva, Tove; Strand, Øystein Anders; Abraham, OC; Thomas, K; Damås, Jan Kristian; Mathews, P; Mathai, D; Aukrust, Pål; Varghese, GM (Journal article; Peer reviewed, 2014)
      Background: Scrub typhus, caused by Orientia tsutsugamushi, is endemic in the Asia-Pacific region. Mortality is high if untreated, and even with treatment as high as 10–20%, further knowledge of the immune response during ...

    • Gut microbiota-dependent trimethylamine N-oxide associates with inflammation in common variable immunodeficiency 

      Macpherson, Magnhild Eide; Hov, Johannes Espolin Roksund; Ueland, Thor; Dahl, Tuva Børresdatter; Kummen, Martin; Otterdal, Kari; Holm, Kristian; Berge, Rolf Kristian; Mollnes, Tom Eirik; Trøseid, Marius; Halvorsen, Bente; Aukrust, Pål; Fevang, Børre; Jørgensen, Silje Fjellgård (Peer reviewed; Journal article, 2020)
      A substantial proportion of patients with common variable immunodeficiency (CVID) have inflammatory and autoimmune complications of unknown etiology. We have previously shown that systemic inflammation in CVID correlates ...

    • Impaired HDL function amplifies systemic inflammation in common variable immunodeficiency 

      Macpherson, Magnhild Eide; Halvorsen, Bente; Yndestad, Arne; Ueland, Thor; Mollnes, Tom Eirik; Berge, Rolf Kristian; Rashidi, Azita; Otterdal, Kari; Gregersen, Ida; Kong, Xiang Yi; Holven, Kirsten Bjørklund; Aukrust, Pål; Fevang, Børre; Jørgensen, Silje Fjellgård (Journal article; Peer reviewed, 2019)
      Common variable immunodeficiency (CVID) is the most common symptomatic primary immunodeficiency, characterized by inadequate antibody responses and recurrent bacterial infections. Paradoxically, a majority of CVID patients ...

    • Increased expression of the homeostatic chemokines CCL19 and CCL21 in clinical and experimental Rickettsia conorii infection 

      Astrup, Elisabeth; Ranheim, Trine; Damås, Jan Kristian; Davi, Giovanni; Santilli, Francesca; Jensenius, Mogens; Vitale, Giustina; Aukrust, Pål; Olano, Juan P; Otterdal, Kari (Journal article; Peer reviewed, 2014)
      Background: Based on their essential role in concerting immunological and inflammatory responses we hypothesized that the homeostatic chemokines CCL19 and CCL21 may play a pathogenic role in rickettsiae infection. Methods: ...

    • Increased serum levels of LIGHT/TNFSF14 in nonalcoholic fatty liver disease: Possible role in hepatic inflammation 

      Otterdal, Kari; Haukeland, John Willy; Yndestad, Arne; Dahl, Tuva Børresdatter; Holm, Sverre; Segers, Filip; Gladhaug, Ivar Prydz; Zbigniew, Konopski; Damås, Jan Kristian; Halvorsen, Bente; Aukrust, Pål (Journal article; Peer reviewed, 2015)
      Objectives: The tumor necrosis factor superfamily member 14, LIGHT (homologous to lymphotoxin, exhibits inducible expression, and competes with HSV glycoprotein D for herpes virus entry mediator (HVEM), a receptor expressed ...

    • Interleukin 27 is increased in carotid atherosclerosis and promotes NLRP3 inflammasome activation. 

      Gregersen, Ida; Sandanger, Øystein; Askevold, Erik Tandberg; Sagen, Ellen Lund; Yang, Kuan; Holm, Sverre; Pedersen, Turid Margrethe; Skjelland, Mona; Krohg-Sørensen, Kirsten; Hansen, Trond Vidar; Dahl, Tuva Børresdatter; Otterdal, Kari; Espevik, Terje; Aukrust, Pål; Yndestad, Arne; Halvorsen, Bente (Journal article; Peer reviewed, 2017)
      Aim Interleukin-27 (IL-27) is involved in different inflammatory diseases; however, its role in atherosclerosis is unclear. In this study we investigated the expression of IL-27 and its receptor in patients with carotid ...

    • Lasting Immunological Imprint of Primary Epstein-Barr Virus Infection With Associations to Chronic Low-Grade Inflammation and Fatigue 

      Fevang, Børre; Wyller, Vegard Bruun Bratholm; Mollnes, Tom Eirik; Pedersen, Maria; Asprusten, Tarjei Tørre; Michelsen, Annika Elisabet; Ueland, Thor; Otterdal, Kari (Peer reviewed; Journal article, 2021)
      Background: Epstein-Barr virus (EBV) causes infectious mononucleosis (IM) that can lead to chronic fatigue syndrome. The CEBA-project (Chronic fatigue following acute EBV infection in Adolescents) has followed 200 patients ...

    • Legumain is upregulated in acute cardiovascular events and associated with improved outcome – potentially related to anti-inflammatory effects on macrophages 

      Lunde, Ngoc Dieu Nguyen; Gregersen, Ida; Ueland, Thor; Shetelig, Christian; Holm, Sverre; Kong, Xiang Yi; Michelsen, Annika; Otterdal, Kari; Yndestad, Arne; Broch, Kaspar; Gullestad, Lars; Nyman, Tuula Anneli; Bendz, Bjørn; Eritsland, Jan; Hoffmann, Pavel; Skagen, Karolina Ryeng; Gonçalves, Isabel; Nilsson, Jan; Grenegård, Magnus; Poreba, Marcin; Drag, Marcin; Seljeflot, Ingebjørg; Sporsheim, Bjørnar; Espevik, Terje; Skjelland, Mona; Johansen, Harald Thidemann; Solberg, Rigmor; Aukrust, Pål; Björbacka, Harry; Andersen, Geir Øystein; Halvorsen, Bente (Peer reviewed; Journal article, 2019)
      Background and aims We have previously found increased levels of the cysteine protease legumain in plasma and plaques from patients with carotid atherosclerosis. This study further investigated legumain during acute ...

    • Rickettsia conorii is a potent complement activator in vivo and combined inhibition of complement and CD14 is required for attenuation of the cytokine response ex vivo 

      Otterdal, Kari; Portillo, Aránzazu; Astrup, Elisabeth; Ludviksen, Judith K; Schjalm, Camilla; Raoult, Didier; Olano, Juan Pablo; Halvorsen, Bente; Oteo Revuelta, José Antonio; Aukrust, Pål; Mollnes, Tom Eirik; Nilsson, Per (Journal article, 2016)
      Mediterranean spotted fever caused by Rickettsia conorii is a potentially lethal disease characterized by vascular inflammation affecting multiple organs. Studies of R. conorii so far have focused on activation of inflammatory ...

    • Secreted wnt antagonists in scrub typhus 

      Ueland, Thor; Astrup, Elisabeth; Otterdal, Kari; Lekva, Tove; Janardhanan, Jeshina; Prakash, John A.; Thomas, Kurien; Michelsen, Annika; Aukrust, Pål; Varghese, George M.; Damås, Jan Kristian (Peer reviewed; Journal article, 2021)
      Background The mechanisms that control local and systemic inflammation in scrub typhus have only been partially elucidated. The wingless (Wnt) signaling pathways are emerging as important regulators of inflammation and ...