Blar i forfatter "Skjeflo, Espen Waage"

Viser treff 1-9 av 9

    • Choice of immunoassay to evaluate porcine cytokine levels 

      Ueland, Nora Lamark; Ludvigsen, Judith K.; Hellerud, Bernt C; Mollnes, Tom Eirik; Skjeflo, Espen Waage (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-06)
      <i>Background</i> - In order to adequately monitor cytokines in experimental models, currently available methods and commercially available kits should be compared.<br><br> <i>Aim</i> - To compare the plasma and tissue concentrations of IL-1β, IL-6, IL-8, IL-10, and TNF as a measure of systemic inflammation in septic pigs.<br><br> <i>Methods</i> - Cytokines were quantified from blood and tissue ...

    • Combined inhibition of complement and CD14 improved outcome in porcine polymicrobial sepsis 

      Skjeflo, Espen Waage; Sagatun, Caroline; Dybwik, Knut; Aam, Sturla; Urving, Sven Haakon; Nunn, Miles A.; Fure, Hilde; Lau, Corinna; Brekke, Ole Lars; Huber-Lang, Markus; Barratt-Due, Andreas; Nielsen, Erik Waage; Mollnes, Tom Eirik (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-27)
      Introduction: Sepsis is an exaggerated and dysfunctional immune response to infection. Activation of innate immunity recognition systems including complement and the Toll-like receptor family initiate this disproportionate inflammatory response. The aim of this study was to explore the effect of combined inhibition of the complement component C5 and the Toll-like receptor co-factor CD14 on survival, ...

    • Complement factors B, D, C3bBbP and risk of future venous thromboembolism 

      Skjeflo, Espen Waage; Evensen, Line Holtet; Jensen, Søren Beck; Latysheva, Nadezhda; Michelsen, Annika Elisabet; Ueland, Thor; Brækkan, Sigrid Kufaas; Hindberg, Kristian Dalsbø; Snir, Omri; Mollnes, Tom Eirik; Hansen, John Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-07)
      The complement system appears to be involved in the pathogenesis of venous thromboembolism (VTE).<p> <p>We investigated the association of complement factors (CF) B, D, and the alternative pathway convertase, C3bBbP, measured at inclusion, with the risk of future VTE in a nested case-control study; 380 VTE patients and 804 age- and sex-matched controls derived from the Tromsø study. Odds ratios ...

    • Elevated plasma concentration of complement factor C5 is associated with risk of future venous thromboembolism 

      Skjeflo, Espen Waage; Brækkan, Sigrid Kufaas; Ludviksen, Judith K; Snir, Omri; Hindberg, Kristian; Mollnes, Tom Eirik; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-25)
      The role of complement in the pathogenesis of venous thromboembolism (VTE) is unclear. We wanted to investigate (1) whether plasma complement component C5 (C5) levels are influenced by genetic variants or chronic inflammation and (2) the association between plasma C5 and risk of future VTE in a nested case-control study of 415 patients with VTE and 848 age- and sex-matched controls derived from the ...

    • Harnessing Innate Immunity - Complement and TLR Inhibition in Experimental Models of Gram Positive and Polymicrobial Bacteremia and Sepsis 

      Skjeflo, Espen Waage (Doctoral thesis; Doktorgradsavhandling, 2017-11-28)
      Sepsis is a syndrome of life-threatening organ malfunction caused by a dysregulated host response to infection. The complement, kallikrein/kinin, coagulation and fibrinolysis plasma cascade systems as well as the TLR system recognize and initiate the immediate responses to infection and thus play an important role in the development of sepsis. In this regard, the ubiquitous TLR co-receptor, CD14, ...

    • Phagocytosis of live and dead Escherichia coli and Staphylococcus aureus in human whole blood is markedly reduced by combined inhibition of C5aR1 and CD14 

      Skjeflo, Espen Waage; Christiansen, Dorte; Landsem, Anne; Stenvik, Jørgen; Woodruff, T. M.; Espevik, Terje; Nielsen, Erik Waage; Mollnes, Tom Eirik (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-15)
      <i>Background</i> - Sepsis is a dysregulated host response to infection. The aim of this study was to investigate the effects of complement- and CD14 inhibition on phagocytosis of live and dead Gram-negative and Gram-positive bacteria in human whole blood.<p> <p><i>Methods</i> - Lepirudin-anticoagulated blood was incubated with live or dead <i>E. coli</i> or <i>S. aureus</i> at 37 °C for 120 min ...

    • Quantification of Porcine Complement Activation Fragment C3a by a Neoepitope-Based Enzyme-Linked Immunosorbent Assay 

      Nilsson, Per; Pettersen, Kristin; Oppermann, Martin; Skjeflo, Espen Waage; Fure, Hilde; Christiansen, Dorte; Mollnes, Tom Eirik (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-14)
      Enzyme-linked immunosorbent assay (ELISA) enables fast and simple quantification of analytes in the pico- to nanogram range in complex samples. Here, we describe an ELISA for the detection of porcine C3a as a marker for complement activation. Antibody specificity is critical for a robust assay. This assay is based on a pair of antibodies specific for the porcine C3a molecule and thus does not react ...

    • Staphylococcus aureus and innate immunity 

      Skjeflo, Espen Waage (Master thesis; Mastergradsoppgave, 2014-05-30)
      Sepsis is an old and lethal disease caused by immune dysfunction in response to infection. The innate immune system is the first responder to infection and the first to dysfunction. It comprises both humoral and cellular components such as the complement, coagulation and fibrinolytic cascade systems as well as the polymorphonuclear neutrophils and monocytes. These usually recognize and respond to ...

    • Staphylococcus aureus-induced complement activation promotes tissue factor-mediated coagulation 

      Skjeflo, Espen Waage; Christiansen, Dorte; Fure, Hilde; Ludviksen, Judith K; Woodruff, Trent M.; Espevik, Terje; Nielsen, Erik Waage; Brekke, Ole-Lars; Mollnes, Tom Eirik (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-13)
      <p><i>Background - </i>There is extensive cross‐talk between the complement system, the Toll‐like receptors (TLRs), and hemostasis. Consumptive coagulopathy is a hallmark of sepsis, and is often mediated through increased tissue factor (TF) expression. <p><i>Objectives - </i>To study the relative roles of complement, TLRs and TF in <i>Staphylococcus aureus</i>‐induced coagulation. <p><i>Methods - ...