Bjørnar Hassel

Adjunct Professor - Department of Neurohabilitation
Image of Bjørnar Hassel
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Room Building 29, 2901006
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Visiting address Kirkeveien 166 OUS Ullevål 0450 Oslo
Postal address Postboks 4956 Nydalen OUS, Ullevål 0424 Oslo

Publications

  • Eide, Per Kristian; Mariussen, Espen; Uggerud, Hilde Thelle; Pripp, Are Hugo; Lashkarivand, Aslan & Hassel, Bjørnar [Show all 8 contributors for this article] (2021). Clinical application of intrathecal gadobutrol for assessment of cerebrospinal fluid tracer clearance to blood. JCI Insight. ISSN 2379-3708. 6(9), p. 1–13. doi: 10.1172/jci.insight.147063. Full text in Research Archive
  • Kildal, Emilie; Stadskleiv, Kristine; Boysen, Elin Sundby; Øderud, Tone; Dahl, Inger-Lise & Seeberg, Trine Margrethe [Show all 9 contributors for this article] (2021). Increased heart rate functions as a signal of acute distress in non-communicating persons with intellectual disability. Scientific Reports. ISSN 2045-2322. 11(1). doi: 10.1038/s41598-021-86023-6.
  • Sumathipala, Dulika Sanjeewani; Strømme, Petter; Gilissen, Christian; Einarsen, Ingunn Holm; Bjørndalen, Hilde & Server, Andrés [Show all 10 contributors for this article] (2020). Sudden death in epilepsy and ectopic neurohypophysis in Joubert syndrome 23 diagnosed using SNVs/indels and structural variants pipelines on WGS data: a case report. BMC Medical Genetics. ISSN 1471-2350. 21:96, p. 1–6. doi: 10.1186/s12881-020-01024-y. Full text in Research Archive
  • Rogne, Ane Gretesdatter; Müller, Ebba Gløersen; Udnæs, Eirin; Sigurdardottir, Solrun; Raudeberg, Rune & Connelly, James Pattrick [Show all 8 contributors for this article] (2020). β-Amyloid may accumulate in the human brain after focal bacterial infection: An 18F-flutemetamol positron emission tomography study. European Journal of Neurology. ISSN 1351-5101. 28(3), p. 877–883. doi: 10.1111/ene.14622. Full text in Research Archive
  • Zhou, Yun; Eid, Tore; Hassel, Bjørnar & Danbolt, Niels Christian (2020). Novel aspects of glutamine synthetase in ammonia homeostasis: Glutamine synthetase and ammonia. Neurochemistry International. ISSN 0197-0186. 140, p. 1–18. doi: 10.1016/j.neuint.2020.104809. Full text in Research Archive
  • Raheel, Tayyaba Qureshi; Bjørkmo, Mona; Nordengen, Kaja; Gundersen, Vidar; Utheim, Tor Paaske & Watne, Leiv Otto [Show all 8 contributors for this article] (2020). Slc38a1 Conveys Astroglia-Derived Glutamine into GABAergic Interneurons for Neurotransmitter GABA Synthesis . Cells. ISSN 2073-4409. 9(7), p. 1–12. doi: 10.3390/cells9071686. Full text in Research Archive
  • Raheel, Tayyaba Qureshi; Sørensen, Christina; Berghuis, Paul; Jensen, Vidar; Dobszay, Marton B. & Farkas, Tamás [Show all 14 contributors for this article] (2019). The glutamine transporter Slc38a1 regulates GABAergic neurotransmission and synaptic plasticity. Cerebral Cortex. ISSN 1047-3211. 29(12), p. 5166–5179. doi: 10.1093/cercor/bhz055. Full text in Research Archive
  • Hassel, Bjørnar; Rogne, Ane Gretesdatter & Hope, Sigrun (2019). Intellectual disability associated with pyridoxine-responsive epilepsies: The need to protect cognitive development. Frontiers in Psychiatry. ISSN 1664-0640. 10:116, p. 1–8. doi: 10.3389/fpsyt.2019.00116. Full text in Research Archive
  • Holmøy, Anne Katrin; Johannessen, Cecilie Haggag; Hope, Sigrun; Van Walsem, Marleen Regina; Aanonsen, Nils Olav & Hassel, Bjørnar (2019). Uncovering health and social care needs among myotonic dystrophy patients: Utility of the Needs and Provisions Complexity Scale. Acta Neurologica Scandinavica. ISSN 0001-6314. 139(6), p. 526–532. doi: 10.1111/ane.13086.
  • Vohra, Rupali; Dalgaard, Line Marie; Vibæk, Jeppe; Langbøl, Mia Aggergaard; Bergersen, Linda Hildegard & Olsen, Niels Vidiendal [Show all 8 contributors for this article] (2019). Potential metabolic markers in glaucoma and their regulation in response to hypoxia. Acta Ophthalmologica. ISSN 1755-375X. p. 1–10. doi: 10.1111/aos.14021.
  • Hassel, Bjørnar; Mariussen, Espen; Idland, Ane-Victoria; Dahl, Gry Torsæter; Ræder, Johan & Frihagen, Frede Jon [Show all 9 contributors for this article] (2018). CSF sodium at toxic levels precedes delirium in hip fracture patients. Neurotoxicology. ISSN 0161-813X. 69(December), p. 11–16. doi: 10.1016/j.neuro.2018.08.010.
  • Zhou, Yun; Dhaher, Roni; Parent, Maxime; Hu, Qiu Xiang; Hassel, Bjørnar & Yee, Siu-Pok [Show all 9 contributors for this article] (2018). Selective deletion of glutamine synthetase in the mouse cerebral cortex induces glial dysfunction and vascular impairment that precede epilepsy and neurodegeneration. Neurochemistry International. ISSN 0197-0186. p. 1–12. doi: 10.1016/j.neuint.2018.07.009. Full text in Research Archive
  • Zhou, Yun; Hassel, Bjørnar; Eid, Tore & Danbolt, Niels Christian (2018). Axon-terminals expressing EAAT2 (GLT-1; Slc1a2) are common in the forebrain and not limited to the hippocampus. Neurochemistry International. ISSN 0197-0186. 123, p. 101–113. doi: 10.1016/j.neuint.2018.03.006. Full text in Research Archive
  • Morland, Cecilie; Frøland, Anne-Sofie; Nguyen, Mi Mong Tran; Storm-Mathisen, Jon; Gundersen, Vidar & Rise, Frode (2018). Propionate enters GABAergic neurons, inhibits GABA transaminase, causes GABA accumulation and lethargy in a model of propionic acidemia. Biochemical Journal. ISSN 0264-6021. 475(4), p. 749–758. doi: 10.1042/BCJ20170814.
  • Hu, Qiu Xiang; Hansen, Sigrid Ottestad; Holmseth, Silvia; Hassel, Bjørnar; Danbolt, Niels Christian & Zhou, Yun (2018). Expression of glutamate transporters in mouse liver, kidney, and intestine. Journal of Histochemistry and Cytochemistry. ISSN 0022-1554. 66(3), p. 189–202. doi: 10.1369/0022155417749828. Full text in Research Archive
  • Dahlberg, Daniel; Struys, Eduard A.; Janssen, EE; Mørkrid, Lars; Midttun, Øivind & Hassel, Bjørnar (2017). Cyst Fluid From Cystic, Malignant Brain Tumors: A Reservoir of Nutrients, Including Growth Factor-Like Nutrients, for Tumor Cells. Neurosurgery. ISSN 0148-396X. 80(6), p. 917–924. doi: 10.1093/neuros/nyw101.
  • Hassel, Bjørnar; De Souza, Gustavo Antonio; Stensland, Maria; Ivanovic, Jugoslav; Voie, Øyvind Albert & Dahlberg, Daniel (2017). The proteome of pus from human brain abscesses: Host-derived neurotoxic proteins and the cell-type diversity of CNS pus. Journal of Neurosurgery. ISSN 0022-3085. 129(3), p. 829–837. doi: 10.3171/2017.4.JNS17284.
  • Idland, Ane-Victoria; Wyller, Torgeir Bruun; Støen, Randi; Dahl, Gry Torsæter; Frihagen, Frede Jon & Brækhus, Anne [Show all 7 contributors for this article] (2017). Cerebrospinal Fluid Phosphate in Delirium after Hip Fracture. Dementia and Geriatric Cognitive Disorders Extra. ISSN 1664-5464. 7(3), p. 309–317. doi: 10.1159/000478723. Full text in Research Archive
  • Hassel, Bjørnar & Dingledine, Raymond (2016). A New Approach for Epilepsy. Cerebrum. ISSN 1524-6205. p. 7–16.
  • Moen, Marivi Nabong; Fjær, Roar; Hamdani, El Hassan; Lærdahl, Jon Kristen; Menchini, Robin Johansen & Vigeland, Magnus Dehli [Show all 12 contributors for this article] (2016). Pathogenic variants in KCTD7 perturb neuronal K+ fluxes and glutamine transport. Brain. ISSN 0006-8950. 139, p. 3109–3120. doi: 10.1093/brain/aww244.
  • Watne, Leiv Otto; Idland, Ane-Victoria; Fekkes, Durk; Ræder, Johan; Frihagen, Frede Jon & Ranhoff, Anette Hylen [Show all 9 contributors for this article] (2016). Increased CSF levels of aromatic amino acids in hip fracture patients with delirium suggests higher monoaminergic activity. BMC Geriatrics. ISSN 1471-2318. 16(149). doi: 10.1186/s12877-016-0324-0. Full text in Research Archive
  • Morland, Cecilie; Pettersen, Mi Nguyen & Hassel, Bjørnar (2016). Hyperosmolar sodium chloride is toxic to cultured neurons and causes reduction of glucose metabolism and ATP levels, an increase in glutamate uptake, and a reduction in cytosolic calcium. Neurotoxicology. ISSN 0161-813X. 54, p. 34–43. doi: 10.1016/j.neuro.2016.03.005.
  • Dahlberg, Daniel; Ivanovic, Jugoslav & Hassel, Bjørnar (2016). Toxic levels of ammonia in human brain abscess. Journal of Neurosurgery. ISSN 0022-3085. 124(3), p. 854–860. doi: 10.3171/2015.1.JNS142582.
  • Solyga, Volker; Western, Elin; Solheim, Hanne; Hassel, Bjørnar & Kerty, Emilia (2015). Posterior kortikal atrofi. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 135(10), p. 949–952. doi: 10.4045/tidsskr.14.1127.
  • Dahlberg, Daniel; Mariussen, Espen; Goverud, Ingeborg Løstegaard; Tonjum, Tone; Mæhlen, Jan & Antal, Ellen-Ann (2015). Staphylococcal α-hemolysin is neurotoxic and causes lysis of brain cells in vivo and in vitro. Neurotoxicology. ISSN 0161-813X. 48, p. 61–67. doi: 10.1016/j.neuro.2015.03.001.
  • Dahlberg, Daniel; Ivanovic, Jugoslav; Mariussen, Espen & Hassel, Bjørnar (2015). High extracellular levels of potassium and trace metals in human brain abscess. Neurochemistry International. ISSN 0197-0186. 82, p. 28–32. doi: 10.1016/j.neuint.2015.02.003.
  • Hassel, Bjørnar; Elsais, Ahmed; Frøland, Anne-Sofie; Taubøll, Erik; Gjerstad, Leif & Quan, Yi [Show all 7 contributors for this article] (2015). Uptake and metabolism of fructose by rat neocortical cells in vivo and by isolated nerve terminals in vitro. Journal of Neurochemistry. ISSN 0022-3042. 133(4), p. 572–581. doi: 10.1111/jnc.13079.
  • Dahlberg, Daniel; Ivanovic, Jugoslav & Hassel, Bjørnar (2014). High extracellular concentration of excitatory amino acids glutamate and aspartate in human brain abscess. Neurochemistry International. ISSN 0197-0186. 69(1), p. 41–47. doi: 10.1016/j.neuint.2014.03.001.
  • Hassel, Bjørnar; Dahlberg, Daniel; Mariussen, Espen; Goverud, Ingeborg Løstegaard; Antal, Ellen-Ann & Tonjum, Tone (2014). Brain infection with Staphylococcus aureus leads to high extracellular levels of glutamate, aspartate, γ-aminobutyric acid, and zinc. Journal of Neuroscience Research. ISSN 0360-4012. 92(12), p. 1792–1800. doi: 10.1002/jnr.23444.
  • Madslien, Elisabeth Henie; Rønning, Helene; Lindback, Toril; Hassel, Bjørnar; Andersson, M.A. & Granum, Per Einar (2013). Lichenysin is produced by most Bacillus licheniformis strains. Journal of Applied Microbiology. ISSN 1364-5072. 115(4), p. 1068–1080. doi: 10.1111/jam.12299.
  • (2013). Tetanus: Pathophysiology, Treatment, and the Possibility of Using Botulinum Toxin against Tetanus-Induced Rigidity and Spasms. Toxins. ISSN 2072-6651. 5(1), p. 73–83. doi: 10.3390/toxins5010073.
  • Zhou, Yun; Holmseth, Silvia; Guo, C; Hassel, Bjørnar; Höfner, G & Huitfeldt, Henrik [Show all 7 contributors for this article] (2012). Deletion of the γ-aminobutyric acid transporter 2 (GAT2 and SLC6A13) gene in mice leads to changes in liver and brain taurine contents. Journal of Biological Chemistry. ISSN 0021-9258. 287(42), p. 35733–35746. doi: 10.1074/jbc.M112.368175.
  • (2012). Hans (Hansemann) Tønnesen, en diagnostisk gåte fra Amalie Skram [A description of early hydrocephalus with macrocephaly, cerebral palsy, epilepsy, intellectual disability, and growth retardation by Norwegian novelist Amalie Skram (1846-1905)]. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 132, p. 2632–2635. doi: 10.4045/tidsskr.12.0912.
  • (2012). 13C Magnetic Resonance Spectroscopy in Neurobiology - Its Use in Monitoring Brain Energy Metabolism and in Identifying Novel Metabolic Substrates and Metabolic Pathways. InTech. ISSN 0192-303X. http://cdn.intechopen.com/pdfs-wm/30447.pdf. doi: 10.5772/33095.
  • Hassel, Bjørnar; Taubøll, Erik; Shaw, Renee; Gjerstad, Leif & Dingledine, Ray (2010). Region-specific changes in gene expression in rat brain after chronic treatment with levetiracetam or phenytoin. Epilepsia. ISSN 0013-9580. 51(9), p. 1714–1720. doi: 10.1111/j.1528-1167.2010.02545.x.
  • Hassel, Bjørnar; Tessler, S.; Faull, R. L. M. & Emson, P. C. (2008). Glutamate uptake is reduced in prefrontal cortex in Huntington's disease. Neurochemical Research. ISSN 0364-3190. 33, p. 232–237.
  • Herrman, Helle; Brækhus, Anne; Aaserud, Olaf; Aukrust, Pål; Stubhaug, Audun & Hassel, Bjørnar (2008). Early treatment of tetanus-induced trismus with botulinum toxin A. Anesthesia and Analgesia. ISSN 0003-2999. 106, p. 1591–1591. doi: 10.1213/ANE.0b013e31816a30f0.
  • Hassel, Bjørnar; Solyga, Volker & Lossius, Andreas (2008). High-affinity choline uptake and acetylcholine-metabolizing enzymes in CNS white matter. A quantitative study. Neurochemistry International. ISSN 0197-0186. 53, p. 193–198. doi: 10.1016/j.neuint.2008.06.008.
  • Bough, Kristopher J.; Paquet, Maryse; Pare, Jean-Francois; Hassel, Bjørnar; Smith, Youland & Hall, Randy A. (2007). Evidence against enhanced glutamate transport in the anticonvulsant mechanism of the ketogenic diet. Epilepsy Research. ISSN 0920-1211. 74(2-3), p. 232–236. doi: 10.1016/j.eplepsyres.2007.03.002.
  • Henjum, Solveig & Hassel, Bjørnar (2007). High-affinity glycine and glutamate transport in pig forebrain white and gray matter: A quantitative study. Neurochemistry International. ISSN 0197-0186. 50(5), p. 696–702. doi: 10.1016/j.neuint.2007.01.002.
  • Henjum, Solveig & Hassel, Bjørnar (2007). High-affinity GABA uptake and GABA-metabolizing enzymes in pig forebrain white matter: A quantitative study. Neurochemistry International. ISSN 0197-0186. 50(2), p. 365–370. doi: 10.1016/j.neuint.2006.09.004.
  • Morland, Cecilie; Henjum, Solveig; Iversen, Evy Grini; Skrede, Knut Kristian & Hassel, Bjørnar (2007). Evidence for a higher glycolytic than oxidative metabolic activity in white matter of rat brain. Neurochemistry International. ISSN 0197-0186. 50(5), p. 703–709.
  • Nguyen, Nga H. T.; Gonzalez, Susan Villa & Hassel, Bjørnar (2007). Formation of glycerol from glucose in rat brain and cultured brain cells. Augmentation with kainate or ischemia. Journal of Neurochemistry. ISSN 0022-3042. 101, p. 1694–1700.
  • Morland, Cecilie; Boldingh, Karen A; Iversen, Evy Grini & Hassel, Bjørnar (2004). Valproate is neuroprotective against malonate toxicity in rat striatum: an association with augmentation of high-affinity glutamate uptake. Journal of Cerebral Blood Flow and Metabolism. ISSN 0271-678X. 24(11), p. 1226–1234.

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  • Rogne, Ane G.; Dahlberg, Daniel; Udnæs, Eirin; Raudeberg, Rune; Sigurdardottir, Solrun & Hassel, Bjørnar (2019). Cognitive dysfunction in brain abscess patients is not attributable to beta-amyloid deposition.
  • Hassel, Bjørnar & Strisland, Frode (2019). Forstå hvordan jeg har det. Sensorteknologi for personer med sterkt begrensende kommunikasjonsevner.
  • Aarønæs, Lars; Hassel, Bjørnar; Rogne, Ane & Dahlberg, Daniel (2018). Puss kan gi hjerneskade. [Internet]. Forskning.no.
  • (2018). Michelangelos David - et syndrome for fremtiden? In Frich, Jan C; Brean, Are & Dietrichs, Espen (Ed.), Hjernen og historien. Det norske medicinske Selskab. ISSN 978-82-92871-84-3. p. 107–113.
  • (2018). Religiøs anatomi i hofteregionen. In Frich, Jan C; Brean, Are & Dietrichs, Espen (Ed.), Hjernen og historien. Det norske medicinske Selskab. ISSN 978-82-92871-84-3. p. 95–97.
  • (2018). Jakobs delirium og overbevisningens nevrobiologi. In Frich, Jan C; Brean, Are & Dietrichs, Espen (Ed.), Hjernen og historien. Det norske medicinske Selskab. ISSN 978-82-92871-84-3. p. 87–94.
  • Zhou, Yun; Hassel, Bjørnar; Eid, Tore & Danbolt, Niels Christian (2018). Axon-terminals expressing EAAT2 (GLT-1; slc1a2) are common in the forebrain and not limited to the hippocampus.
  • Cordero, Patricia Reyes; Rise, Frode & Hassel, Bjørnar (2020). NMR and spectrophotometric investigations of D-glyceraldehyde metabolism via methylglyoxal. Kjemisk Institutt, Universitetet i Oslo.

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Published Oct. 15, 2015 2:48 PM - Last modified Oct. 18, 2017 1:09 PM