Blar i forfatter "Andersen, Geir Øystein"

Viser treff 1-8 av 8

    • Complement activation is associated with poor outcome after out-of-hospital cardiac arrest 

      Chaban, Viktoriia; Nakstad, Espen R.; Stær-Jensen, Henrik; Schjalm, Camilla; Seljeflot, Ingebjørg; Vaage, Ingvar Jarle; Lundqvist, Christofer; Saltyte Benth, Jurate; Sunde, Kjetil; Mollnes, Tom Eirik; Andersen, Geir Øystein; Pischke, Soeren (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-11)
      Background - Cardiopulmonary resuscitation after cardiac arrest initiates a whole-body ischemia-reperfusion injury, which may activate the innate immune system, including the complement system. We hypothesized that complement activation and subsequent release of soluble endothelial activation markers were associated with cerebral outcome including death.<p> <p>Methods - Outcome was assessed at ...

    • Cytokine pattern in patients with ST-elevation myocardial infarction treated with the interleukin-6 receptor antagonist tocilizumab 

      Woxholt, Sindre; Ueland, Thor; Aukrust, Pål; Anstensrud, Anne Kristine; Broch, Kaspar; Tøllefsen, Ingvild Maria; Ryan, Liv; Bendz, Bjørn; Hopp, Einar; Kløw, Nils-Einar; Seljeflot, Ingebjørg; Halvorsen, Bente; Dahl, Tuva Børresdatter; Huse, Camilla; Andersen, Geir Øystein; Gullestad, Lars; Wiseth, Rune; Amundsen, Brage H.; Damås, Jan Kristian; Kleveland, Ola (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-17)
      Background - Tocilizumab improves myocardial salvage index (MSI) in patients with ST-elevation myocardial infarction (STEMI), but its mechanisms of action are unclear. Here, we explored how cytokines were affected by tocilizumab and their correlations with neutrophils, C-reactive protein (CRP), troponin T, MSI and infarct size.<p> <p>Methods - STEMI patients were randomised to receive a single ...

    • IL-6 receptor inhibition by tocilizumab attenuated expression of C5a receptor 1 and 2 in non-ST-elevation myocardial infarction 

      Orrem, Hilde Lang; Nilsson, Per; Pischke, Søren Erik; Kleveland, Ola; Yndestad, Arne; Ekholt, Karin; Damås, Jan Kristian; Espevik, Terje; Bendz, Bjørn; Halvorsen, Bente; Gregersen, Ida; Wiseth, Rune; Andersen, Geir Øystein; Ueland, Thor; Gullestad, Lars; Aukrust, Pål; Barratt-Due, Andreas; Mollnes, Tom Eirik (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-12)
      <p><i>Background</i>: Elevated interleukin-6 (IL-6) and complement activation are associated with detrimental effects of inflammation in coronary artery disease (CAD). The complement anaphylatoxins C5a and C3a interact with their receptors; the highly inflammatory C5aR1, and the C5aR2 and C3aR. We evaluated the effect of the IL-6 receptor (IL-6R)-antagonist tocilizumab on the expression of the ...

    • Interleukin-6 inhibition in ST-elevation myocardial infarction: Immune cell profile in the randomised ASSAIL-MI trial 

      Huse, Camilla; Anstensrud, Anne Kristine; Michelsen, Annika Elisabet; Ueland, Thor; Broch, Kaspar; Woxholt, Sindre; Yang, Kuan; Sharma, Kapil Kishore; Tøllefsen, Ingvild Maria; Bendz, Bjørn; Amundsen, Brage H.; Damås, Jan Kristian; Berg, Erlend Sturle; Bjørkelund, Elisabeth; Quiles-Jiménez, Ana M T; Bjerkeli, Vigdis; Bendz, Christina; Kleveland, Ola; Stensæth, Knut Haakon; Opdahl, Anders; Kløw, Nils-Einar; Andersen, Geir Øystein; Wiseth, Rune; Halvorsen, Bente; Gullestad, Lars; Seljeflot, Ingebjørg; Aukrust, Pål; Osnes, Liv T. N.; Dahl, Tuva Børresdatter (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-30)
      Background We recently showed that interleukin (IL)-6 inhibition by tocilizumab improves myocardial salvage in ST-elevation myocardial infarction (STEMI). However, the mechanisms for this effect are not clear.<p> <p>Methods In this exploratory sub-study of the ASSAIL-MI trial, we examined leukocyte differential counts and their relation to myocardial salvage and peak troponin T (TnT) in STEMI ...

    • 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 (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-14)
      <i>Background and aims</i> - 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 cardiovascular events.<p><p> <i>Methods</i> - Circulating levels of legumain from patients and legumain released from platelets were assessed by enzyme-linked-immunosorbent ...

    • Randomized Trial of Interleukin-6 Receptor Inhibition in Patients With Acute ST-Segment Elevation Myocardial Infarction 

      Broch, Kaspar; Anstensrud, Anne Kristine; Woxholt, Sindre; Sharma, Kapil Kishore; Tøllefsen, Ingvild Maria; Bendz, Bjørn; Aakhus, Svend; Ueland, Thor; Amundsen, Brage H.; Damås, Jan Kristian; Berg, Erlend; Bjørkelund, Elisabeth; Bendz, Christina; Hopp, Einar; Kleveland, Ola; Stensæth, Knut Haakon; Opdahl, Anders; Kløw, Nils-Einar; Seljeflot, Ingebjørg; Andersen, Geir Øystein; Wiseth, Rune; Aukrust, Pål; Gullestad, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-12)
      <p><i>Background - </i>Prompt myocardial revascularization with percutaneous coronary intervention (PCI) reduces infarct size and improves outcomes in patients with ST-segment elevation myocardial infarction (STEMI). However, as much as 50% of the loss of viable myocardium may be attributed to the reperfusion injury and the associated inflammatory response. <p><i>Objectives - </i>This study sought ...

    • Rationale for the ASSAIL-MI-trial: a randomised controlled trial designed to assess the effect of tocilizumab on myocardial salvage in patients with acute ST-elevation myocardial infarction (STEMI) 

      Anstensrud, Anne Kristine; Voxholt, Sindre; Sharma, Kapil; Broch, Kaspar; Bendz, Bjørn; Aakhus, Svend; Ueland, Thor; Amundsen, Brage H.; Damås, Jan Kristian; Hopp, Einar; Kleveland, Ola; Stensæth, Knut Haakon; Opdahl, Anders; Kløw, Nils-Einar; Seljeflot, Ingebjørg; Andersen, Geir Øystein; Wiseth, Rune; Aukrust, Pål; Gullestad, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-15)
      <i>Introduction</i>: Interleukin-6 (IL-6) may be involved in ischaemia-reperfusion injury and myocardial remodelling after myocardial infarction (MI). We have recently shown that IL-6 inhibition by tocilizumab attenuates systemic inflammation and troponin T-release in patients with acute non-ST elevation MI (NSTEMI). Experimental studies suggest that IL-6 inhibition can limit infarct size through ...

    • Soluble IL-1 receptor 2 is associated with left ventricular remodelling in patients with ST-elevation myocardial infarction 

      Orrem, Hilde Lang; Shetelig, Christian; Ueland, Thor; Limalanathan, Shanmuganathan; Nilsson, Per; Husebye, Trygve Guttorm; Aukrust, Pål; Seljeflot, Ingebjørg; Hoffmann, Pavel; Eritsland, Jan; Mollnes, Tom Eirik; Andersen, Geir Øystein; Yndestad, Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-28)
      <p><i>Background</i>: The inflammatory response following myocardial infarction (MI) is prerequisite for proper healing of infarcted tissue, but can also have detrimental effects on cardiac function. Interleukin (IL)-1α and IL-1β are potent inflammatory mediators and their bioactivity is tightly regulated by IL-1 receptor antagonist (IL-1ra) and soluble (s) IL-1 receptors (R). We aimed to examine ...