Johannes Lagethon Bjørnstad

  • Associate Professor; MD, PhD
 

Publications 2024

Mortensen M, Nilsen RM, Kvalheim VL, Bjørnstad JL, Svendsen ØS, Haaverstad R, Moi AL (2024)
The influence of socio-demographic and clinical factors on sick leave and return to work after open-heart surgery: a nationwide registry-based cohort study
Eur Heart J Qual Care Clin Outcomes, 10 (5), 431-445
DOI 10.1093/ehjqcco/qcad064, PubMed 37858302

Røed-Undlien H, Schultz NH, Amundsen EK, Wollmann BM, Molden E, Akerkar RR, Bjørnstad JL (2024)
Does in vitro hemolysis affect measurements of plasma apixaban concentration by UPLC-MS and anti-Xa assay?
Int J Lab Hematol, 46 (5), 946-952
DOI 10.1111/ijlh.14311, PubMed 38808488

Røed-Undlien H, Schultz NH, Lunnan A, Husebråten IM, Wollmann BM, Molden E, Bjørnstad JL (2024)
Corrigendum to < IN-VITRO APIXABAN REMOVAL BY CYTOSORB® WHOLE BLOOD ADSORBER. AN EXPERIMENTAL STUDY.> <[Journal of Cardiothoracic and Vascular Anesthesia 36/6 (2024) 1636 - 1644]>
J Cardiothorac Vasc Anesth, 38 (7), 1606-1607
DOI 10.1053/j.jvca.2024.03.039, PubMed 38580477

Publications 2022

Røed-Undlien H, Schultz NH, Lunnan A, Husebråten IM, Wollmann BM, Molden E, Bjørnstad JL (2022)
In Vitro Apixaban Removal By CytoSorb Whole Blood Adsorber: An Experimental Study
J Cardiothorac Vasc Anesth, 36 (6), 1636-1644
DOI 10.1053/j.jvca.2022.01.038, PubMed 35272914

Publications 2020

Bjørnstad JL, Bendz B (2020)
Periprocedural myocardial injury in the EXCEL trial
Eur Heart J, 41 (17), 1703
DOI 10.1093/eurheartj/ehaa182, PubMed 32227182

Bjørnstad JL, Khan AM, Røed-Undlien H, Bendz B, Nygård S, Hoel TN, Lingaas PS (2020)
Operative survival in patients with acute aortic disease in the era of newer oral anticoagulants
Open Heart, 7 (2)
DOI 10.1136/openhrt-2020-001278, PubMed 32675298

Helgeland E, Andresen K, Dumont KA, Bjørnstad JL (2020)
Leaflet fracture and embolization from an On-X mechanical mitral valve
JTCVS Tech, 3, 140-143
DOI 10.1016/j.xjtc.2020.06.021, PubMed 34317846

Publications 2019

Nuru A, Weltzien JAH, Sandvik L, Tønnessen T, Bjørnstad JL (2019)
Short- and long-term survival after isolated coronary artery bypass grafting, the impact of gender and age
Scand Cardiovasc J, 53 (6), 342-347
DOI 10.1080/14017431.2019.1646430, PubMed 31321989

Publications 2015

Skrbic B, Engebretsen KV, Strand ME, Lunde IG, Herum KM, Marstein HS, Sjaastad I, Lunde PK, Carlson CR, Christensen G, Bjørnstad JL, Tønnessen T (2015)
Lack of collagen VIII reduces fibrosis and promotes early mortality and cardiac dilatation in pressure overload in mice
Cardiovasc Res, 106 (1), 32-42
DOI 10.1093/cvr/cvv041, PubMed 25694587

Publications 2014

Engebretsen KV, Skårdal K, Bjørnstad S, Marstein HS, Skrbic B, Sjaastad I, Christensen G, Bjørnstad JL, Tønnessen T (2014)
Attenuated development of cardiac fibrosis in left ventricular pressure overload by SM16, an orally active inhibitor of ALK5
J Mol Cell Cardiol, 76, 148-57
DOI 10.1016/j.yjmcc.2014.08.008, PubMed 25169971

Majak P, Lunde IG, Hasic AK, Husebye T, Christensen G, Tønnessen T, Bjørnstad JL (2014)
Reduced visfatin levels in aortic stenosis increase after aortic valve replacement and may contribute to reverse left ventricular remodelling
J Cardiovasc Surg (Torino), 56 (3), 483-92
PubMed 24429804

Nygård S, Reitan T, Clancy T, Nygaard V, Bjørnstad J, Skrbic B, Tønnessen T, Christensen G, Hovig E (2014)
Identifying pathogenic processes by integrating microarray data with prior knowledge
BMC Bioinformatics, 15, 115
DOI 10.1186/1471-2105-15-115, PubMed 24758699

Publications 2013

Engebretsen KV, Lunde IG, Strand ME, Waehre A, Sjaastad I, Marstein HS, Skrbic B, Dahl CP, Askevold ET, Christensen G, Bjørnstad JL, Tønnessen T (2013)
Lumican is increased in experimental and clinical heart failure, and its production by cardiac fibroblasts is induced by mechanical and proinflammatory stimuli
FEBS J, 280 (10), 2382-98
DOI 10.1111/febs.12235, PubMed 23480731

Engebretsen KV, Waehre A, Bjørnstad JL, Skrbic B, Sjaastad I, Behmen D, Marstein HS, Yndestad A, Aukrust P, Christensen G, Tønnessen T (2013)
Decorin, lumican, and their GAG chain-synthesizing enzymes are regulated in myocardial remodeling and reverse remodeling in the mouse
J Appl Physiol (1985), 114 (8), 988-97
DOI 10.1152/japplphysiol.00793.2012, PubMed 23412898

Publications 2012

Majak P, Bjørnstad JL, Braathen B, Lunde IG, Husebye T, Christensen G, Tønnessen T (2012)
Endothelin-1 in the human myocardium and circulating plasma: evaluation before, during and after correction of aortic stenosis with aortic valve replacement
Cardiology, 123 (1), 1-10
DOI 10.1159/000339756, PubMed 22907118

Majak P, Braathen B, Bjørnstad JL, Tønnessen T (2012)
GDF-15 is increased during early reperfusion following aortic valve replacement
Scand Cardiovasc J, 46 (2), 99-106
DOI 10.3109/14017431.2011.649489, PubMed 22168128

Mordal GC, Hov KR, Bjørnstad JL, Meidell NK (2012)
[A man in his fifties with syncope and hypotension]
Tidsskr Nor Laegeforen, 132 (7), 826-9
DOI 10.4045/tidsskr.10.0653, PubMed 22511095

Skrbic B, Bjørnstad JL, Marstein HS, Carlson CR, Sjaastad I, Nygård S, Bjørnstad S, Christensen G, Tønnessen T (2012)
Differential regulation of extracellular matrix constituents in myocardial remodeling with and without heart failure following pressure overload
Matrix Biol, 32 (2), 133-42
DOI 10.1016/j.matbio.2012.11.011, PubMed 23220517

Publications 2011

Bjørnstad JL (2011)
The TGFβ/SMAD signalling system and extracellular matrixchanges in myocardial remodelling and reverse remodelling following correction of pressure overload
In Series of dissertations submitted to the Faculty of Medicine, University of Oslo, Unipub, Oslo, no. 1136, 1 b. (flere pag.)
BIBSYS 112811485, ISBN 978-82-8264-139-5

Bjørnstad JL, Skrbic B, Marstein HS, Hasic A, Sjaastad I, Louch WE, Florholmen G, Christensen G, Tønnessen T (2011)
Inhibition of SMAD2 phosphorylation preserves cardiac function during pressure overload
Cardiovasc Res, 93 (1), 100-10
DOI 10.1093/cvr/cvr294, PubMed 22049534

Bjørnstad JL, Skrbic B, Sjaastad I, Bjørnstad S, Christensen G, Tønnessen T (2011)
A mouse model of reverse cardiac remodelling following banding-debanding of the ascending aorta
Acta Physiol (Oxf), 205 (1), 92-102
DOI 10.1111/j.1748-1716.2011.02369.x, PubMed 21974781

Publications 2010

Bjørnstad JL, Sjaastad I, Nygård S, Hasic A, Ahmed MS, Attramadal H, Finsen AV, Christensen G, Tønnessen T (2010)
Collagen isoform shift during the early phase of reverse left ventricular remodelling after relief of pressure overload
Eur Heart J, 32 (2), 236-45
DOI 10.1093/eurheartj/ehq166, PubMed 20525982

Majak P, Bjørnstad J, Vengen OA, Neverdal NO, Husebye T, Woldbaek P, Pepper J, Lie M, Christensen G, Tønnessen T (2010)
Plasma IL-18 and IL-18BP are altered differently in reverse remodeling following aortic valve replacement
Scand Cardiovasc J, 44 (2), 113-8
DOI 10.3109/14017430903426902, PubMed 19961286

Publications 2009

Bjørnstad JL, Pillgram-Larsen J, Tønnessen T (2009)
Coronary artery dissection and acute myocardial infarction following blunt chest trauma
World J Emerg Surg, 4, 14
DOI 10.1186/1749-7922-4-14, PubMed 19366447

Publications 2008

Bjørnstad JL, Neverdal NO, Vengen OA, Knudsen CW, Husebye T, Pepper J, Lie M, Christensen G, Tønnessen T (2008)
Alterations in circulating activin A, GDF-15, TGF-beta3 and MMP-2, -3, and -9 during one year of left ventricular reverse remodelling in patients operated for severe aortic stenosis
Eur J Heart Fail, 10 (12), 1201-7
DOI 10.1016/j.ejheart.2008.09.010, PubMed 18996047

Publications 2002

Bjørnstad J, Nyland H, Skeidsvoll H, Aanderud L, Eidsvik S (2002)
[Neurologic decompression sickness in sports divers]
Tidsskr Nor Laegeforen, 122 (17), 1649-51
PubMed 12555605