Theis Tønnessen

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Visiting address Sognsvannsveien 20 Rikshospitalet 0372 Oslo
Postal address Postboks 4950 Nydalen OUS HF Rikshospitalet 0424 Oslo

Publications

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  • Lie, Irene; Moons, Philip; Tønnessen, Theis; Halvorsen, Sigrun; Blakø, Mitti & Christian, Møller [Show all 10 contributors for this article] (2023). Experiences of informal caregivers taking care of heart surgery patients after discharge from hospital: A qualitative study.
  • Højskov, Ida; Bjørnnes, Ann Kristin; Tønnessen, Theis; Halvorsen, Sigrun; Blakø, Mitti & Møller, Christian H. [Show all 10 contributors for this article] (2023). Informal caregivers must open the door to information during heart surgery patients hospitalization. A qualitative study.
  • Tønnessen, Theis; Christensen, Geir; Carlson, Cathrine Rein; Skrbic, Biljana & Sjaastad, Ivar (2022). Calcineurin-NFAT dynamics corresponds to cardiac remodeling during aortic banding and debanding, mimicking aortic valve replacement. Frontiers in Molecular Medicine for Cardiology. doi: 10.3389/fmmed.2022.980717.
  • Neerland, Bjørn Erik; Busund, Rolf; Haaverstad, Rune; Helbostad, Jorunn L.; Landsverk, Svein A. & Martinaityte, Ieva [Show all 19 contributors for this article] (2022). Alpha-2-adrenergic receptor agonists for the prevention of delirium and cognitive decline after open heart surgery (ALPHA2PREVENT): protocol for a multicentre randomised controlled trial. BMJ Open. ISSN 2044-6055. 12(6). doi: 10.1136/bmjopen-2021-057460.
  • Kluge, Karsten Engseth; Langseth, Miriam Sjåstad; Bratset, Vibeke; Pettersen, Alf Åge Reistad; Arnesen, Harald & Tønnessen, Theis [Show all 8 contributors for this article] (2020). Circulating levels of the terminal complement complex are associated with hypercoagulability in patients with stable coronary artery disease. Thrombosis Research. ISSN 0049-3848. 196, p. 106–108. doi: 10.1016/j.thromres.2020.08.023.
  • Danielsen, Stein Ove; Moons, Philip; Tønnessen, Theis; Solheim, Svein; Leegaard, Marit & Lie, Irene (2017). 24/7 telephone support after discharge for surgical aortic valve replacement as a potential lifesaving intervention -a clinical case from the AVRre study.
  • Lie, Irene; Danielsen, Stein Ove; Tønnessen, Theis; Solheim, Svein; Leegaard, Marit & Sandvik, Leiv [Show all 10 contributors for this article] (2017). Determining the impact of 24/7 phone support on hospital readmissions after aortic valve replacement surgery (the AVRre study): study protocol for a randomised controlled trial. Trials. ISSN 1745-6215. 18. doi: 10.1186/s13063-017-1971-y.
  • Parikh, Shan; Blackwell, DJ; Gomez-Hurtado, N; Frisk, Michael; Wang, L & Kim, K [Show all 11 contributors for this article] (2017). Thyroid and Glucocorticoid Hormones Promote Functional T-tubule Development in Human Induced Pluripotent Stem Cell Derived Cardiomyocytes. Circulation. ISSN 0009-7322. 136.
  • Mohammadzadeh, Naiyereh; Engebretsen, Kristin V Thunheim; Lunde, Ida Gjervold; Sjaastad, Ivar; Strand, Mari Elen & Marstein, Henriette [Show all 14 contributors for this article] (2016). Lack of the extracellular matrix proteoglycan lumican leads to cardiac dysfunction in response to pressure overload.
  • Mohammadzadeh, Naiyereh; Engebretsen, Kristin; Lunde, Ida Gjervold; Sjaastad, Ivar; Strand, Mari Elen & Marstein, Henriette [Show all 14 contributors for this article] (2016). Lack of the extracellular matrix proteoglycan lumican leads to ventricular dilatation, attenuated hypertrophy and contractile dysfunction in response to pressure overload.
  • Ruud, Marianne; Frisk, Michael; Aronsen, Jan Magnus; Dahl, Christen Peder; Jølle, Guro Five & Aakhus, Svend [Show all 15 contributors for this article] (2016). Mechanical load regulates cardiomyocyte t-tubular structure and Ca2+ homeostasis.
  • Frisk, Michael; Aronsen, Jan Magnus; Dahl, Christen Peder; Lunde, Ida Gjervold; Jølle, Guro Five & Almaas, Victor [Show all 13 contributors for this article] (2015). Maintained cardiomyocyte t-tubule structure and function in patients with non-dilated hypertrophy.
  • Mohammadzadeh, Naiyereh; Andenæs, Kine; Engebretsen, Kristin V.; Lunde, Ida Gjervold; Sjaastad, Ivar & Marstein, Henriette [Show all 12 contributors for this article] (2015). The role of lumican in Cardiac pressure overload.
  • Strand, Mari Elen; Aronsen, Jan Magnus; Braathen, Bjørn; Sjaastad, Ivar; Kvaløy, Heidi & Tønnessen, Theis [Show all 8 contributors for this article] (2015). Shedding of syndecan-4 promotes immune cell recruitment and mitigates cardiac dysfunction after lipopolysaccharide challenge in mice.
  • Andenæs, Kine; Mohammadzadeh, Naiyereh; Lunde, Ida Gjervold; Strand, Mari Elen; Marstein, Henriette & Dahl, Christen Peder [Show all 10 contributors for this article] (2015). The extracellular matrix proteoglycan fibromodulin is up-regulated in experimental and clinical heart failure, and might be involved in regulation of myocardial fibrosis by interacting with TGF-B.
  • Mohammadzadeh, Naiyereh; Andenæs, Kine; Engebretsen, Kristin V Thunheim; Lunde, Ida Gjervold; Sjaastad, Ivar & Marstein, Henriette [Show all 12 contributors for this article] (2015). The role of lumican in Cardiac pressure overload.
  • Bandlien, Caroline; Engebretsen, Kristin V Thunheim; Skrbic, Biljana; Lunde, Ida Gjervold; Sjaastad, Ivar & Christensen, Geir Arve [Show all 7 contributors for this article] (2014). Lack of lumican in cardiac pressure overload attenuates development of cardiac fibrosis leading to premature left ventricle dilatation.
  • Strand, Mari Elen; Skrbic, Biljana; Kvaløy, Heidi; Sjaastad, Ivar; Tønnessen, Theis & Christensen, Geir Arve [Show all 7 contributors for this article] (2014). Syndecan-4 shedding mediates innate immune responses of the heart to lipopolysaccharide challenge and pressure overload.
  • Melleby, Arne Olav; Strand, Mari Elen; Skrbic, Biljana; Dahl, Christen Peder; Tønnessen, Theis & Sjaastad, Ivar [Show all 10 contributors for this article] (2014). Glypican 6 is up-regulated in pressure overload induced pathological left ventricular remodeling, mediates bFGF signaling and may affect cardiac fibrosis development.
  • Herum, Kate Louise Møller; Lunde, Ida Gjervold; Skrbic, Biljana; Louch, William Edward; Hasic, Almira & Boye, Sigurd [Show all 13 contributors for this article] (2014). Syndecan-4 is a key determinant of collagen cross-linking and myocardial stiffness in the pressure-overloaded heart.
  • Hodne, Kjetil; Wanichawan, Pimthanya; Hafver, Tandekile Lubelwana; Aronsen, Jan Magnus; Lunde, Ida Gjervold & Lunde, Marianne [Show all 12 contributors for this article] (2014). Identification and functional role of calpain cleavage site in Na+-Ca2+ exchanger 1 (NCX1). Biophysical Journal. ISSN 0006-3495. 106.
  • Bandlien, Caroline; Engebretsen, Kristin V Thunheim; Skrbic, Biljana; Marstein, Henriette; Lunde, Ida Gjervold & Sjaastad, Ivar [Show all 9 contributors for this article] (2014). Lack of lumican in cardiac pressure overload attenuates development of cardiac fibrosis leading to premature left ventricle dilatation.
  • Strand, Mari Elen; Skrbic, Biljana; Kvaløy, Heidi; Sjaastad, Ivar; Tønnessen, Theis & Christensen, Geir Arve [Show all 7 contributors for this article] (2014). Syndecan-4 shedding mediates immune cell infiltration to the heart in response to lipopolysaccharide challenge.
  • Melleby, Arne Olav; Strand, Mari Elen; Skrbic, Biljana; Dahl, Christen Peder; Tønnessen, Theis & Sjaastad, Ivar [Show all 10 contributors for this article] (2014). The heparan sulfate proteoglycan glypican-6 is increased in experimental and clinical heart failure and might play a role in myocardial fibrosis. European Journal of Heart Failure. ISSN 1388-9842. 16, p. 116–116.
  • Herum, Kate Louise Møller; Lunde, Ida Gjervold; Skrbic, Biljana; Tønnessen, Theis; Louch, William Edward & Hasic, Almira [Show all 10 contributors for this article] (2014). Syndecan-4 promotes myocardial stiffness by regulating collagen expression and cross-linking in response to pressure overload. The FASEB Journal. ISSN 0892-6638. 28.
  • Søraas, Camilla Lund; Friis, Charlotte Mathilde; Engebretsen, Kristin V Thunheim; Sandvik, Leiv; Kjeldsen, Sverre Erik & Tønnessen, Theis (2013). Authors' reply to the letter from Dr Wang: Troponins after coronary artery bypass grafting: Continuous or cut-point approach? American Heart Journal. ISSN 0002-8703. 166(2). doi: 10.1016/j.ahj.2013.05.001.
  • Skrbic, Biljana; Engebretsen, Kristin V Thunheim; Strand, Mari Elen; Marstein, Henriette; Sjaastad, Ivar & Lunde, Ida Gjervold [Show all 10 contributors for this article] (2013). Lack of collagen type 8 in pressure overload causes left ventricular dilatation and overt heart failure in mice, suggesting a role in transition to heart failure in patients with aortic stenosis.
  • Skrbic, Biljana; Engebretsen, Kristin V Thunheim; Strand, Mari Elen; Marstein, Henriette; Sjaastad, Ivar & Lunde, Ida Gjervold [Show all 10 contributors for this article] (2013). Lack of collagen type 8 in pressure overload causes left ventricular dilatation and overt heart failure in mice, suggesting a role in transition to heart failure in patients with aortic stenosis. Circulation. ISSN 0009-7322. 128.
  • Strand, Mari Elen; Herum, Kate Louise Møller; Skrbic, Biljana; Kvaløy, Heidi; Sjaastad, Ivar & Tønnessen, Theis [Show all 8 contributors for this article] (2013). Syndecan-4 shedding in the hypertrophic heart is likely mediated by MMP9 and ADAMTS4, a process believed to modulate cardiac inflammation.
  • Wanichawan, Pimthanya; Lunde, Ida Gjervold; Aronsen, Jan Magnus; Austbø, Bjørg; Lunde, Marianne & Tønnessen, Theis [Show all 9 contributors for this article] (2013). Calpain mediates proteolysis of the cardiac Na+- Ca2+ exchanger 1(NCX1) in failing hearts through its catalytic site (IIb) and domain III.
  • Wanichawan, Pimthanya; Lunde, Ida Gjervold; Aronsen, Jan Magnus; Austbø, Bjørg; Lunde, Marianne & Tønnessen, Theis [Show all 8 contributors for this article] (2013). Modulation of the Na+-Ca2+ exchanger 1(NCX1) by calpain; molecular interactions and identification of a calpain cleavage site.
  • Lunde, Ida Gjervold; Skrbic, Biljana; Tønnessen, Theis; Kvaløy, Heidi; Enger, Ulla Helene & Dahl, Christen Peder [Show all 9 contributors for this article] (2013). Clinical and Experimental Aortic Stenosis; Attenuation of Activated Pro-Hypertrophic NFAT Transcription Factor Isoforms by Relief of Pressure Overload. Circulation. ISSN 0009-7322. 128.
  • Frisk, Michael; Jølle, Guro Five; Lunde, Ida Gjervold; Skrbic, Biljana; Sejersted, Ole M & Tønnessen, Theis [Show all 8 contributors for this article] (2013). Aortic stenosis triggers t-tubule growth in human and murine cardiomyocytes.
  • Wanichawan, Pimthanya; Hafver, Tandekile; Aronsen, Jan Magnus; Lunde, Ida Gjervold; Lunde, Marianne & Kvaløy, Heidi [Show all 10 contributors for this article] (2013). Modulation of the Sodium-calcium Exchanger 1 (NCX1) by Calpain; Molecular Interactions and Identification of a Calpain Cleavage Site. Circulation. ISSN 0009-7322. 128.
  • Herum, Kate Louise Møller; Lunde, Ida Gjervold; Skrbic, Biljana; Tønnessen, Theis; Louch, William Edward & Hasic, Almira [Show all 13 contributors for this article] (2013). Syndecan-4 regulates myocardial stiffness by inducing myofibroblast differentiation, extracellular matrix production and collagen cross-linking in response to pressure overload. Circulation. ISSN 0009-7322. 128.
  • Røe, Åsmund Treu; Aronsen, Jan Magnus; Frisk, Michael; Lunde, Ida Gjervold; Riise, Jon & Sejersted, Ole M [Show all 10 contributors for this article] (2013). Compensatory alterations in cardiomyocytes Ca2+ homeostasis during aortic stenosis. Circulation. ISSN 0009-7322. 128.
  • Lunde, Ida Gjervold; Skrbic, Biljana; Tønnessen, Theis; Dahl, Christen Peder; Kvaløy, Heidi & Enger, Ulla Helene [Show all 9 contributors for this article] (2013). Clinical and experimental aortic stenosis; attenuation of activated pro-hypertrophic NFAT transcription factor isoforms during reverse remodeling.
  • Herum, Kate Louise Møller; Lunde, Ida Gjervold; Skrbic, Biljana; Tønnessen, Theis; Louch, William Edward & Hasic, Almira [Show all 11 contributors for this article] (2013). Syndecan-4 regulates myocardial stiffness by inducing myofibroblast differentiation, extracellular matrix production and collagen cross-linking in response to pressure overload.
  • Herum, Kate Louise Møller; Lunde, Ida Gjervold; Skrbic, Biljana; Tønnessen, Theis; Louch, William Edward & Hasic, Almira [Show all 13 contributors for this article] (2013). Syndecan-4 promotes myocardial stiffness by regulating myofibroblast differentiation and extracellular matrix structure in response to pressure overload.
  • Engebretsen, Kristin V Thunheim; Skårdal, Kristine; Bjørnstad, S; Marstein, Henriette; Skrbic, Biljana & Sjaastad, Ivar [Show all 9 contributors for this article] (2013). Inhibiting phosphorylation of SMAD2/3 by the small molecule SM16 in left ventricular pressure overload reduces fibrosis and signs of heart failure, possibly due to better diastolic function.
  • Strand, Mari Elen; Herum, Kate Louise Møller; Skrbic, Biljana; Kvaløy, Heidi; Sjaastad, Ivar & Tønnessen, Theis [Show all 8 contributors for this article] (2013). Syndecan-4 shedding in the hypertrophic heart is likely mediated by the MMP9 and ADAMTS4 enzymes, a process involved in cardiac inflammation and failure progression.
  • Wanichawan, Pimthanya; Hafver, Tandekile Lubelwana; Lunde, Ida Gjervold; Aronsen, Jan Magnus; Lunde, Marianne & Kvaløy, Heidi [Show all 10 contributors for this article] (2013). Calpain induces cleavage of the cardiac Na+ - Ca2+ exchanger 1 (NCX1) in pressure-overloaded hearts: Molecular interactions and identification of a calpain cleavage site.
  • Lunde, Ida Gjervold; Skrbic, Biljana; Tønnessen, Theis; Kvaløy, Heidi; Sjaastad, Ivar & Christensen, Geir Arve [Show all 7 contributors for this article] (2013). Experimental and clinical aortic stenosis; myocardial activation of the four pro-hypertrophic NFAT transcription factors is attenuated by relief of pressure overload. European Journal of Heart Failure. Supplements. ISSN 1567-4215. 12(1), p. S3–S3.
  • Frisk, Michael; Jølle, Guro Five; Lunde, Ida Gjervold; Skrbic, Biljana; Sejersted, Ole M & Tønnessen, Theis [Show all 8 contributors for this article] (2013). Aortic Stenosis Triggers T-Tubule Growth in Human and Murine Cardiomyocytes. Biophysical Journal. ISSN 0006-3495. 104(2), p. 603A–603A.
  • Skrbic, Biljana; Engebretsen, Kristin V Thunheim; Marstein, Henriette; Sjaastad, Ivar; Christensen, Geir Arve & BJØRNSTAD, JOHANNES [Show all 7 contributors for this article] (2012). Reduction in collagen type 8 might be involved in transition from compensated hypertrophy to left ventricular dilatation and overt heart failure in pressure overload.
  • Strand, Mari Elen; Herum, Kate Louise Møller; Rana, Zaheer Ahmad; Skrbic, Biljana; Vistnes, Maria & Sjaastad, Ivar [Show all 10 contributors for this article] (2012). The adhesion site transmembrane proteoglycan syndecan-4; an integrator of pro-hypertrophic and pro-inflammatory signaling in the heart? Circulation. ISSN 0009-7322. 126.
  • Strand, Mari Elen; Herum, Kate Louise Møller; Rana, Zaheer Ahmad; Skrbic, Biljana; Vistnes, Maria & Hasic, Almira [Show all 12 contributors for this article] (2012). The adhesion site transmembrane proteoglycan syndecan-4; an integrator of pro-hypertrophic and pro-inflammatory signaling in the heart?
  • Wanichawan, Pimthanya; Lunde, Ida Gjervold; Aronsen, Jan Magnus; Lunde, Marianne; Tønnessen, Theis & Sjaastad, Ivar [Show all 8 contributors for this article] (2012). Calpain mediated proteolysis of the cardiac sodium-calcium exchanger 1 (NCX1) in failing hearts: molecular interactions. Circulation. ISSN 0009-7322. 126.
  • Wanichawan, Pimthanya; Lunde, Ida Gjervold; Aronsen, Jan Magnus; Austbø, Bjørg; Lunde, Marianne & Tønnessen, Theis [Show all 9 contributors for this article] (2012). Calpain induces cleavage of the cardiac Na+-Ca2+ exchanger1 (NCX1) in failing hearts: Molecular interaction.
  • Lunde, Ida Gjervold; Skrbic, Biljana; Tønnessen, Theis; Kvaløy, Heidi; Enger, Ulla Helene & Sjaastad, Ivar [Show all 8 contributors for this article] (2012). Aortic stenosis in mice and men; myocardial activation of pro-hypertrophic NFAT transcription factor isoforms is attenuated by relief of pressure overload. Circulation. ISSN 0009-7322. 126, p. A14212–A14212.
  • Lunde, Ida Gjervold; Skrbic, Biljana; Tønnessen, Theis; Kvaløy, Heidi; Enger, Ulla Helene & Sjaastad, Ivar [Show all 8 contributors for this article] (2012). Aortic stenosis in mice and men; myocardial activation of the four calcineurin-dependent NFAT transcription factor isoforms is attenuated by relief of pressure overload.
  • Louch, William Edward; Hake, Johan; Mørk, Halvor Kjeang; Hougen, Karina; Skrbic, Biljana & Lines, Glenn [Show all 9 contributors for this article] (2012). Slow Ca2+ Sparks De-synchronize Ca2+ Release in Failing Cardiomyocytes: Evidence for Altered Ryanodine Receptor Distribution?
  • Louch, William Edward; Hake, John; Mørk, Halvor Kjeang; Hougen, Karina; Skrbic, Biljana & Line, Glenn [Show all 9 contributors for this article] (2012). Slow Ca2+ Sparks De-synchronize Ca2+ Release in Failing Cardiomyocytes: Evidence for Altered Ryanodine Receptor Distribution? Circulation. ISSN 0009-7322. 126, p. A16425–A16425.
  • Engebretsen, Kristin V Thunheim; Lunde, Ida Gjervold; Wæhre, Anne; Strand, Mari Elen; Sjaastad, Ivar & Marstein, Henriette [Show all 11 contributors for this article] (2012). The collagen-organizing proteoglycan lumican is increased in experimental and clinical heart failure and its production by cardiac fibroblasts is induced by pro-inflammatory and mechanical stimuli.
  • Lunde, Ida Gjervold; Finsen, Alexandra; Florholmen, Geir; Skrbic, Biljana; Kvaløy, Heidi & Jarstadmarken, Hilde [Show all 10 contributors for this article] (2012). Syndecan-4, a z-disc proteoglycan, regulates mechanical stress-induced, pro-hypertrophic NFAT signaling in cardiomyocytes through a direct interaction with calcineurin. Cardiovascular Research (CVR). ISSN 0008-6363. 93, p. S50–S50. doi: 10.1093/cvr/cvr333.

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Published Apr. 13, 2011 2:55 PM - Last modified May 27, 2011 4:11 PM