Lasse Kristoffer Bak

Lasse Kristoffer Bak

Guest Researcher, Professor


  1. Published

    A functioning glycolysis is important for maintenance of glutamate transport in cultured astrocytes

    Schousboe, Arne, Sickmann, H. M., Bak, Lasse Kristoffer, Schousboe, I., Bouman, S. D. & Waagepetersen, Helle S., 2010, In: Journal of Neurochemistry. s1, p. 288-289

    Research output: Contribution to journalConference abstract in journalResearch

  2. Published

    Activity of the lactate-alanine shuttle is independent of glutamate-glutamine cycle activity in cerebellar neuronal-astrocytic cultures

    Bak, Lasse Kristoffer, Sickmann, H. M., Schousboe, Arne & Waagepetersen, Helle S., 4 Dec 2004, In: Journal of Neuroscience Research. 79, 1-2, p. 88-96 9 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Amino acid neurotransmitter synthesis and removal

    Schousboe, Arne, Bak, Lasse Kristoffer, Madsen, K. K. & Waagepetersen, Helle S., 2013, Neuroglia. Kettenman, H. & Ransom, B. R. (eds.). 3. ed. Oxford: Oxford University Press, p. 443-456 14 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  4. Published

    Among the branched-chain amino acids, only valine metabolism is up-regulated in astrocytes during glutamate exposure

    Bak, Lasse Kristoffer, Johansen, M. L., Schousboe, Arne & Waagepetersen, Helle S., 2007, In: Journal of Neuroscience Research. 86, p. 3465-3470

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Aspects of astrocyte energy metabolism, amino acid neurotransmitter homoeostasis and metabolic compartmentation

    Kreft, M., Bak, Lasse Kristoffer, Waagepetersen, Helle S. & Schousboe, Arne, 2012, In: A S N Neuro. 4, 3, p. 187 199 p.

    Research output: Contribution to journalReviewResearchpeer-review

  6. Published

    Aspects of astrocytic cAMP signaling with an emphasis on the putative power of compartmentalized signals in health and disease

    Christiansen, Ann-Kathrin Lindahl, Jakobsen, Emil, Mertz, C. & Bak, Lasse Kristoffer, 2019, In: Glia. 67, 9, p. 1625-1636

    Research output: Contribution to journalReviewResearchpeer-review

  7. Published

    Aspects of cAMP Signaling in Epileptogenesis and Seizures and Its Potential as Drug Target

    Mertz, C., Krarup, S., Jensen, C. D., Lindholm, S. E. H., Kjær, C., Pinborg, Lars Hageman & Bak, Lasse Kristoffer, 2020, In: Neurochemical Research. 45, p. 1247-1255 9 p.

    Research output: Contribution to journalReviewResearchpeer-review

  8. Published

    Astrocyte glycogenolysis is triggered by store-operated calcium entry and provides metabolic energy for cellular calcium homeostasis

    Müller, M. S., Fox, R., Schousboe, Arne, Waagepetersen, Helle S. & Bak, Lasse Kristoffer, Apr 2014, In: Glia. 62, 4, p. 526-34 9 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Astrocytes take the stage in a tale of signaling-metabolism coupling

    Bak, Lasse Kristoffer, 2 Jun 2017, In: The Journal of Biological Chemistry. 292, 22, p. 9439-9440 2 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Astrocytic control of biosynthesis and turnover of the neurotransmitters glutamate and GABA

    Schousboe, Arne, Bak, Lasse Kristoffer & Waagepetersen, Helle S., 15 Aug 2013, In: Frontiers in Endocrinology. 4, 102.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    Astrocytic glycogen metabolism in the healthy and diseased brain

    Bak, Lasse Kristoffer, Walls, Anne Byriel, Schousboe, Arne & Waagepetersen, Helle S., 11 May 2018, In: The Journal of Biological Chemistry. 293, 19, p. 7108-7116 9 p.

    Research output: Contribution to journalReviewResearchpeer-review

  12. Published

    Brain alanine formation as an ammonia-scavenging pathway during hyperammonemia: effects of glutamine synthetase inhibition in rats and astrocyte-neuron co-cultures

    Dadsetan, S., Kukolj, E., Bak, Lasse Kristoffer, Sørensen, M., Ott, P., Vilstrup, H., Schousboe, Arne, Keiding, S. & Waagepetersen, Helle S., Aug 2013, In: Journal of Cerebral Blood Flow and Metabolism. 33, 8, p. 1235-41 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    Brain energy and ammonia metabolism

    Bak, Lasse Kristoffer, Schousboe, Arne & Waagepetersen, Helle S., 2012, Functional molecular imaging in hepatology. Bentham Science Publishers, Vol. 1. p. 129-144 16 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  14. Published

    Brain energy and ammonia metabolism

    Bak, Lasse Kristoffer, Waagepetersen, Helle S. & Schousboe, Arne, 2011, Functional molecular imaging in hepatology. Bussum, The Netherlands: Bentham Science Publishers, p. 129-144

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  15. Published

    Brain glycogen: new perspectives on its metabolic function and regulation at the subcellular level

    Obel, L. L. F., Müller, M. S., Walls, Anne Byriel, Sickmann, H. M., Bak, Lasse Kristoffer, Waagepetersen, Helle S. & Schousboe, Arne, 2 Mar 2012, In: Frontiers in Neuroenergetics. 4, 15 p.

    Research output: Contribution to journalReviewResearchpeer-review

  16. Published

    Branched-chain amino acids increase arterial blood ammonia in spite of enhanced intrinsic muscle ammonia metabolism in patients with cirrhosis and healthy subjects

    Dam, G., Keiding, S., Munk, O. L., Ott, P., Buhl, M., Vilstrup, H., Bak, Lasse Kristoffer, Waagepetersen, Helle S., Schousboe, Arne, Møller, N. & Sørensen, M., 1 Aug 2011, In: American Journal of Physiology: Gastrointestinal and Liver Physiology. 301, 2, p. G269-77

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. Published
  18. Published

    Characterization of energy and neurotransmitter metabolism in cortical glutamatergic neurons derived from human induced pluripotent stem cells: A novel approach to study metabolism in human neurons

    Aldana, Blanca, Zhang, Y., Lihme, M. F., Bak, Lasse Kristoffer, Nielsen, Jørgen Erik, Holst, B., Hyttel, P., Freude, Kristine & Waagepetersen, Helle S., 2017, In: Neurochemistry International. 106, p. 48-61

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Compartmentalised signalling-metabolism coupling in brain cells - putative drug targets for neurological diseases?

    Bak, Lasse Kristoffer, Christiansen, Ann-Kathrin Lindahl, Kjaer, C., Jakobsen, Emil, Hedehus, J., Mertz, C., Madsen, S., Jensen, M., Bergstedt, N., Knezevic, A. & Lindholm, S., Aug 2017, In: Journal of Neurochemistry. 142, S1, p. 145-145

    Research output: Contribution to journalConference abstract in journalResearchpeer-review

  20. Published

    Complex actions of ionomycin in cultured cerebellar astrocytes affecting both calcium-induced calcium release and store-operated calcium entry

    Müller, M. S., Obel, L. L. F., Waagepetersen, Helle S., Schousboe, Arne & Bak, Lasse Kristoffer, Jun 2013, In: Neurochemical Research. 38, 6, p. 1260-5 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    Complex glutamate labeling from [U-13C]glucose or [U-13C]lactate in co-cultures of cerebellar neurons and astrocytes

    Bak, Lasse Kristoffer, Waagepetersen, Helle S., Melø, T. M., Schousboe, Arne & Sonnewald, U., 2007, In: Neurochemical Research. 32, p. 671-680

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    CrossTalk opposing view: lack of evidence supporting an astrocyte-to-neuron lactate shuttle coupling neuronal activity to glucose utilisation in the brain

    Bak, Lasse Kristoffer & Walls, Anne Byriel, 1 Feb 2018, In: The Journal of Physiology. 596, 3, p. 351-353 3 p.

    Research output: Contribution to journalComment/debateResearchpeer-review

  23. Published

    Demonstration of extensive GABA synthesis in the small population of GAD positive neurons in cerebellar cultures by the use of pharmacological tools

    Sonnewald, U., Kortner, T. M., Qu, H., Olstad, E., Suñol, C., Bak, Lasse Kristoffer, Schousboe, Arne & Waagepetersen, Helle S., 7 Mar 2006, In: Neurochemistry International. 48, 6-7, p. 572-8 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Demonstration of neuron-glia transfer of precursors for Gaba biosynthesis in a co-culture system of dissociated mouse cerebral cortex

    Leke, R., Bak, Lasse Kristoffer, Schousboe, Arne & Waagepetersen, Helle S., 2008, In: Neurochemical Research. 33, 12, p. 2629-2635

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Detoxification of ammonia in mouse cortical GABAergic cell cultures increases neuronal oxidative metabolism and reveals an emerging role for release of glucose-derived alanine

    Leke, R., Bak, Lasse Kristoffer, Anker, M., Melø, T. M., Sørensen, M., Keiding, S., Vilstrup, H., Ott, P., Portela, L. V., Sonnewald, U., Schousboe, Arne & Waagepetersen, Helle S., 1 Apr 2011, In: Neurotoxicity Research. 19, 3, p. 496-510 15 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  26. Published

    Differential Expression of the β3 Subunit of Voltage-Gated Ca2+ Channel in Mesial Temporal Lobe Epilepsy

    Kjær, C., Palasca, Oana, Barzaghi, G., Bak, Lasse Kristoffer, Durhuus, R. K. J., Jakobsen, Emil, Pedersen, Louise, Bartels, Emil Daniel, Woldbye, David Paul Drucker, Pinborg, Lars Hageman & Jensen, Lars Juhl, 2023, In: Molecular Neurobiology. 60, p. 5755–5769

    Research output: Contribution to journalJournal articleResearchpeer-review

  27. Published

    Distinct effects on cAMP signaling of carbamazepine and its structural derivatives do not correlate with their clinical efficacy in epilepsy

    Krarup, S., Mertz, C., Jakobsen, Emil, Lindholm, S. E. H., Pinborg, Lars Hageman & Bak, Lasse Kristoffer, 2020, In: European Journal of Pharmacology. 886, 11 p., 173413.

    Research output: Contribution to journalJournal articleResearchpeer-review

  28. Published

    Divergent Cellular Energetics, Glutamate Metabolism, and Mitochondrial Function Between Human and Mouse Cerebral Cortex

    Westi, Emil Winther, Jakobsen, Emil, Voss, C. M., Bak, Lasse Kristoffer, Pinborg, Lars Hageman, Aldana, Blanca & Andersen, J. V., 2022, In: Molecular Neurobiology. 59, p. 7495–7512

    Research output: Contribution to journalJournal articleResearchpeer-review

  29. Published

    Dynamic changes in cytosolic ATP levels in cultured glutamatergic neurons during NMDA-induced synaptic activity supported by glucose or lactate

    Lange, S. C., Winkler, U., Andresen, Lars, Byhrø, M., Waagepetersen, Helle S., Hirrlinger, J. & Bak, Lasse Kristoffer, Dec 2015, In: Neurochemical Research. 40, 12, p. 2517-2526 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  30. Published

    Effect of glutamine synthetase inhibition on brain and interorgan ammonia metabolism in bile duct ligated rats

    Fries, A. W., Dadsetan, S., Keiding, S., Bak, Lasse Kristoffer, Schousboe, Arne, Waagepetersen, Helle S., Simonsen, M., Ott, P., Vilstrup, H. & Sørensen, M., Mar 2014, In: Journal of Cerebral Blood Flow and Metabolism. 34, 3, p. 460-6 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  31. Published
  32. Published

    Effects of hyperammonemia on brain energy metabolism: controversial findings in vivo and in vitro

    Schousboe, Arne, Waagepetersen, Helle S., Leke, R. & Bak, Lasse Kristoffer, 1 Mar 2014, In: Metabolic Brain Disease. 29, 4, p. 913-917 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  33. Published

    Energy substrates to support glutamatergic and GABAergic synaptic function: role of glycogen, glucose and lactate

    Schousboe, Arne, Bak, Lasse Kristoffer, Sickmann, H. M., Sonnewald, U. & Waagepetersen, Helle S., Dec 2007, In: Neurotoxicity Research. 12, 4, p. 263-8 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  34. Published

    Energy substrates to support glutamatergic and GABAergic synaptic function: Role of glycogen, glucose and lactate

    Schousboe, Arne, Bak, Lasse Kristoffer, Sickmann, H. M., Sonnewald, U. & Waagepetersen, Helle S., 2007, In: Neurotoxicity Research. 12, 4, p. 263-268

    Research output: Contribution to journalJournal articleResearchpeer-review

  35. Published
  36. Published

    Expression of the Purinergic P2X7 Receptor in Murine MOPC315.BM Myeloma Cells

    Risborg Høyer, E., Demir, M., Bak, Lasse Kristoffer, Jørgensen, Niklas Rye & Agrawal, A., 2023, In: Receptors. 2, 3, p. 191-203

    Research output: Contribution to journalJournal articleResearchpeer-review

  37. Published

    Expression of the human isoform of glutamate dehydrogenase, hGDH2, augments TCA cycle capacity and oxidative metabolism of glutamate during glucose deprivation in astrocytes

    Nissen, J. D., Lykke, K., Bryk, J., Stridh, M. H., Zaganas, I., Jensen, Dorte Skytt, Schousboe, Arne, Bak, Lasse Kristoffer, Enard, W., Pääbo, S. & Waagepetersen, Helle S., 2017, In: Glia. 65, 3, p. 474–488

    Research output: Contribution to journalJournal articleResearchpeer-review

  38. Published
  39. Published

    Fluctuations in Cytosolic Calcium Regulate the Neuronal Malate-Aspartate NADH Shuttle: Implications for Neuronal Energy Metabolism

    Satrústegui, J. & Bak, Lasse Kristoffer, Dec 2015, In: Neurochemical Research. 40, 12, p. 2425-30 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  40. Published

    Functional importance of the astrocytic glycogen-shunt and glycolysis for maintenance of an intact intra/extracellular glutamate gradient

    Schousboe, Arne, Sickmann, H. M., Walls, Anne Byriel, Bak, Lasse Kristoffer & Waagepetersen, Helle S., 2010, In: Neurotoxicity Research. 18, 1, p. 94-9 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  41. Published

    Glucose is necessary to maintain neurotransmitter homeostasis during synaptic activity in cultured glutamatergic neurons

    Bak, Lasse Kristoffer, Schousboe, Arne, Sonnewald, U. & Waagepetersen, Helle S., Oct 2006, In: Journal of Cerebral Blood Flow and Metabolism. 26, 10, p. 1285-97 13 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  42. Published

    Glucose, Lactate and Glutamine but not Glutamate Support Depolarization-Induced Increased Respiration in Isolated Nerve Terminals

    Hohnholt, M. C., Andersen, V. H., Bak, Lasse Kristoffer & Waagepetersen, Helle S., 2017, In: Neurochemical Research. 42, 1, p. 191-201 11 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  43. Published

    Glutamate and glutamine in brain disorders

    Bak, Lasse Kristoffer, Schousboe, Arne & Waagepetersen, Helle S., 2011, Neurochemical mechanisms in diseases. Blass, J. P. (ed.). New York: Springer Publishing Company, Vol. 1. p. 195-212 (Advances in Neurobiology).

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  44. Published

    Glutamate dehydrogenase Isoforms with N-Terminal (His)6- or FLAG-tag retain their kinetic properties and cellular localization

    Pajecka, K., Nielsen, C. W., Hauge, A., Zaganas, I., Bak, Lasse Kristoffer, Schousboe, Arne, Plaitakis, A. & Waagepetersen, Helle S., 26 Apr 2013, In: Neurochemical Research. 39, 3, p. 487-499

    Research output: Contribution to journalJournal articleResearchpeer-review

  45. Published

    Glutamate dehydrogenase isoforms with N-terminal (His)6- or FLAG-tag retain their kinetic properties and cellular localization

    Pajęcka, K., Nielsen, C. W., Hauge, A., Zaganas, I., Bak, Lasse Kristoffer, Schousboe, Arne, Plaitakis, A. & Waagepetersen, Helle S., 2014, In: Neurochemical Research. 39, 3, p. 487-99 13 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  46. Published

    Glutamate metabolism in the brain focusing on astrocytes

    Schousboe, Arne, Scafidi, S., Bak, Lasse Kristoffer, Waagepetersen, Helle S. & McKenna, M. C., 2014, In: Advances in Neurobiology. 11, p. 13-30 18 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  47. Published

    Glutamine and ammonia in hepatic encephalopathy

    Dadsetan, S., Waagepetersen, Helle S., Schousboe, Arne & Bak, Lasse Kristoffer, 1 Jan 2015, Glutamine in Clinical Nutrition. Springer New York LLC, p. 219-227 9 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  48. Published
  49. Published

    Hepatic encephalopathy is associated with decreased cerebral oxygen metabolism and blood flow, not increased ammonia uptake

    Dam, G., Keiding, S., Munk, O. L., Ott, P., Vilstrup, H., Bak, Lasse Kristoffer, Waagepetersen, Helle S., Schousboe, Arne & Sørensen, M., Jan 2013, In: Hepatology. 57, 1, p. 258-65 8 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  50. Published

    Impact of the malate-aspartate shuttle in glutamate neurotransmission

    Waagepetersen, Helle S., Bak, Lasse Kristoffer, Lund, Trine Meldgaard, Walls, A. B., Sonnewald, U. & Schousboe, Arne, 2009, In: Journal of Neurochemistry. s1, p. 9

    Research output: Contribution to journalConference abstract in journalResearch

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