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Browsing NTNU Open by Author "Ryan, Liv"

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    • Alginate microbeads are coagulation compatible, while alginate microcapsules activate coagulation secondary to complement or directly through FXII 

      Gravastrand, Caroline; Hamad, Shamal; Fure, Hilde; Steinkjer, Bjørg; Ryan, Liv; Oberholzer, José; Lambris, John D.; Lacík, Igor; Mollnes, Tom Eirik; Brekke, Ole-Lars; Rokstad, Anne Mari (Journal article; Peer reviewed, 2017)
      Alginate microspheres are presently under evaluation for future cell-based therapy. Their ability to induce harmful host reactions needs to be identified for developing the most suitable devices and efficient prevention ...
    • Alginate microbeads are complement compatible, in contrast to polycation containing microcapsules, as revealed in a human whole blood model 

      Rokstad, Anne Mari; Brekke, Ole Lars; Steinkjer, Bjørg; Ryan, Liv; Kolláriková, Gabriela; Strand, Berit Løkensgard; Skjåk-Bræk, Gudmund; Lacík, Igor; Espevik, Terje; Mollnes, Tom Eirik (Journal article; Peer reviewed, 2011)
      Alginate microbeads and microcapsules are presently under evaluation for future cell-based therapy. Defining their inflammatory properties with regard to humans is therefore essential. A lepirudine-based human whole blood ...
    • Cholesterol crystals use complement to increase NLRP3 signaling pathways in coronary and carotid atherosclerosis 

      Niyonzima, Nathalie; Bakke, Siril S.; Gregersen, Ida; Holm, Sverre; Sandanger, Øystein; Orrem, Hilde Lang; Sporsheim, Bjørnar; Ryan, Liv; Kong, Xiang Yi; Dahl, Tuva Børresdatter; Skjelland, Mona; Sørensen, Kirsten; Rokstad, Anne Mari A.; Yndestad, Arne; Latz, Eicke; Gullestad, Lars; Andersen, Geir Øystein; Damås, Jan Kristian; Aukrust, Pål; Mollnes, Tom Eirik; Halvorsen, Bente; Espevik, Terje (Peer reviewed; Journal article, 2020)
      Background: During atherogenesis, cholesterol precipitates into cholesterol crystals (CC) in the vessel wall, which trigger plaque inflammation by activating the NACHT, LRR and PYD domains-containing protein 3 (NLRP3) ...
    • Combined inhibition of complement and CD14 attenuates bacteria-induced inflammation in human whole blood more efficiently than antagonizing the toll-like receptor 4-MD2 complex 

      Gustavsen, Alice; Nymo, Stig Haugset; Landsem, Anne; Christiansen, Dorte; Ryan, Liv; Husebye, Harald; Lau, Corinna; Pischke, Søren Erik; Lambris, John D.; Espevik, Terje; Mollnes, Tom Eirik (Journal article; Peer reviewed, 2016)
      Background. Single inhibition of the Toll-like receptor 4 (TLR4)–MD2 complex failed in treatment of sepsis. CD14 is a coreceptor for several TLRs, including TLR4 and TLR2. The aim of this study was to investigate the effect ...
    • Cyclodextrin Reduces Cholesterol Crystal-Induced Inflammation by Modulating Complement Activation 

      Bakke, Siril Skaret; Aune, Marie Hjelmseth; Niyonzima, Nathalie; Pilely, Katrine; Ryan, Liv; Skjelland, Mona; Garred, Peter; Aukrust, Pål; Halvorsen, Bente; Latz, Eicke; Damås, Jan Kristian; Mollnes, Tom Eirik; Espevik, Terje (Journal article; Peer reviewed, 2017)
      Cholesterol crystals (CC) are abundant in atherosclerotic plaques and promote inflammatory responses via the complement system and inflammasome activation. Cyclic oligosaccharide 2-hydroxypropyl-β-cyclodextrin (BCD) is a ...
    • Cyclodextrin Reduces Cholesterol Crystal-Induced Inflammation by Modulating Complement Activation 

      Bakke, Siril Skaret; Aune, Marie Hjelmseth; Niyonzima, Nathalie; Pilely, Katrine; Ryan, Liv; Skjelland, Mona; Garred, Peter; Aukrust, Pål; Halvorsen, Bente; Latz, Eicke; Damås, Jan Kristian; Mollnes, Tom Eirik; Espevik, Terje (Journal article, 2017)
      Cholesterol crystals (CC) are abundant in atherosclerotic plaques and promote inflammatory responses via the complement system and inflammasome activation. Cyclic oligosaccharide 2-hydroxypropyl-β-cyclodextrin (BCD) is a ...
    • Cytokine profiles in human metapneumovirus infected children: Identification of genes involved in the antiviral response and pathogenesis 

      Malmo, Jostein; Moe, Nina; Krokstad, Sidsel; Ryan, Liv; Loevenich, Simon; Johnsen, Ingvild Bjellmo; Espevik, Terje; Nordbø, Svein Arne; Døllner, Henrik; Anthonsen, Marit Walbye (Journal article; Peer reviewed, 2016)
      Human metapneumovirus (hMPV) causes severe airway infection in children that may be caused by an unfavorable immune response. The nature of the innate immune response to hMPV in naturally occurring infections in children ...
    • Functional Toll-like receptors in primary first-trimester trophoblasts 

      Tangerås, Line; Stødle, Guro; Olsen, Guro Dalheim; Leknes, Ann-Helen; Gundersen, Astrid; Skei, Bente; Vikdal, Anne Jorunn; Ryan, Liv; Steinkjer, Bjørg; Myklebost, Merete; Langaas, Mette; Austgulen, Rigmor; Iversen, Ann-Charlotte (Journal article; Peer reviewed, 2014)
      Toll-like receptors (TLRs) are an important part of the body's danger response system and crucial for initiating inflammation in response to cellular stress, tissue damage, and infections. Proper placental development is ...
    • In Vitro and In Vivo Biocompatibility Evaluation of Polyallylamine and Macromolecular Heparin Conjugates Modified Alginate Microbeads 

      Vaithilingam, Vijayaganapathy; Steinkjer, Bjørg; Ryan, Liv; Larsson, Rolf; Tuch, Bernard E.; Oberholzer, José; Rokstad, Anne Mari (Journal article; Peer reviewed, 2017)
      Host reactivity to biocompatible immunoisolation devices is a major challenge for cellular therapies, and a human screening model would be of great value. We designed new types of surface modified barium alginate microspheres, ...
    • Interleukin-6 receptor inhibition with tocilizumab induces a selective and substantial increase in plasma IP-10 and MIP-1β in non-ST-elevation myocardial infarction 

      Kleveland, Ola; Ueland, Thor; Kunszt, Gabor; Bratlie, Marte; Yndestad, Arne; Broch, Kaspar; Holte, Espen; Ryan, Liv; Amundsen, Brage H.; Bendz, Bjørn; Aakhus, Svend; Espevik, Terje; Halvorsen, Bente; Mollnes, Tom Eirik; Wiseth, Rune; Gullestad, Lars; Aukrust, Pål; Damås, Jan Kristian (Journal article; Peer reviewed, 2018)
      Aim To evaluate the effect of interleukin-6 inhibition with tocilizumab on the cytokine network in patients with acute non-ST-elevation myocardial infarction (NSTEMI). Methods 117 patients with acute NSTEMI were randomised ...
    • Persistent mycobacteria evade an antibacterial program mediated by phagolysosomal TLR7/8/MyD88 in human primary macrophages 

      Gidon, Alexandre; Åsberg, Signe; Louet, Claire; Ryan, Liv; Haug, Markus; Flo, Trude Helen (Journal article; Peer reviewed, 2017)
      Pathogenic mycobacteria reside in macrophages where they avoid lysosomal targeting and degradation through poorly understood mechanisms proposed to involve arrest of phagosomal maturation at an early endosomal stage. A ...
    • Reconstituted High-Density Lipoprotein Attenuates Cholesterol Crystal-Induced Inflammatory Responses by Reducing Complement Activation 

      Niyonzima, Nathalie; Samstad, Eivind; Aune, Marie Hjelmseth; Ryan, Liv; Bakke, Siril Skaret; Rokstad, Anne Mari; Wright, Samuel; Damås, Jan Kristian; Mollnes, Tom Eirik; Latz, Eicke; Espevik, Terje (Journal article; Peer reviewed, 2015)
      Chronic inflammation of the arterial wall is a key element in the development of atherosclerosis, and cholesterol crystals (CC) that accumulate in plaques are associated with initiation and progression of the disease. We ...
    • RORα controls inflammatory state of human macrophages 

      Nejati Moharrami, Neda; Tande, Erlend Bjørkøy; Ryan, Liv; Espevik, Terje; Boyartchuk, Victor (Journal article; Peer reviewed, 2018)
      ROR family of nuclear receptor transcription factors forms nodes connecting metabolic and inflammatory signaling pathways. The RORα members of the family have intrinsic transcriptional activity and they are involved in ...
    • Sensing of HIV-1 by TLR8 activates human T cells and reverses latency 

      Meås, Hany Zakaria; Haug, Markus; Beckwith, Marianne Sandvold; Louet, Claire; Ryan, Liv; Hu, Zhenyi; Landskron, Johannes; Nordbø, Svein Arne; Tasken, Kjetil; Yin, Hang; Damås, Jan Kristian; Flo, Trude Helen (Journal article; Peer reviewed, 2020)
      During HIV infection, cell-to-cell transmission results in endosomal uptake of the virus by target CD4+ T cells and potential exposure of the viral ssRNA genome to endosomal Toll-like receptors (TLRs). TLRs are instrumental ...
    • Serum cytokine patterns in first half of pregnancy 

      Stokkeland, Live Marie Tobiesen; Giskeødegård, Guro F.; Stridsklev, Solhild; Ryan, Liv; Steinkjer, Bjørg; Tangerås, Line Haugstad; Vanky, Eszter; Iversen, Ann-Charlotte (Journal article; Peer reviewed, 2019)
      Introduction Human pregnancy is a state of elevated maternal systemic inflammation, and pregnancy complications are often associated with a dysfunctional immune response. The network of cytokines reflects this complex ...
    • SLAMF1 is required for TLR4-mediated TRAM-TRIF dependent signaling in human macrophages 

      Yurchenko, Mariya; Skjesol, Astrid; Ryan, Liv; Richard, Gabriel Mary; Kandasamy, Richard Kumaran; Wang, Ninghai; Terhorst, Cox; Husebye, Harald; Espevik, Terje (Journal article; Peer reviewed, 2018)
      Signaling lymphocytic activation molecule family 1 (SLAMF1) is an Ig-like receptor and a costimulatory molecule that initiates signal transduction networks in a variety of immune cells. In this study, we report that SLAMF1 ...
    • TLR8 and complement C5 induce cytokine release and thrombin activation in human whole blood challenged with Gram-positive bacteria 

      Ehrnstrøm, Birgitta; Kojen, June Frengen; Giambelluca, Miriam; Ryan, Liv; Moen, Siv Helen; Hu, Zhenyi; Yin, Hang; Mollnes, Tom Eirik; Damås, Jan Kristian; Espevik, Terje; Stenvik, Jørgen (Journal article; Peer reviewed, 2020)
      We recently showed that TLR8 is critical for the detection of Gram‐positive bacteria by human monocytes. Here, we hypothesized that TLR8 and complement together regulate antibacterial responses in human blood. Anticoagulated ...
    • TLR8 senses Staphylococcus aureus RNA in human primary monocytes and macrophages and induces IFN-β production via a TAK1-IKKβ-IRF5 signaling pathway 

      Bergstrøm, Bjarte; Aune, Marie Hjelmseth; Awuh, Jane Atesoh; Kojen, June Frengen; Blix, Kjetil Jordahl; Ryan, Liv; Flo, Trude Helen; Mollnes, Tom Eirik; Espevik, Terje; Stenvik, Jørgen (Journal article, 2015)

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