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Rolf Gruetter

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Rolf Gruetter (born 1962 in Geneva) is a Swiss physicist and neurobiologist specialized in magnetic resonance, biomedical imaging and brain metabolism. He is a professor of physics at EPFL (École Polytechnique Fédérale de Lausanne) and the head of the Laboratory Functional and Metabolic Imaging at the School of Basic Sciences.[1][2]

Professor
Rolf Gruetter
Rolf Gruetter in 2014
Born1962 (age 61–62)
Geneva
CitizenshipSwiss
Known forFast shimming techniques
Spectroscopy methods
Ultra-high magnetic fields in magnetic resonance
Neuro-glial metabolism
AwardsYoung Investigator Award Plenary Lecture (ISN, 1999)
Academic background
EducationPhysics
Alma materETH Zurich
ThesisMethodische Aspekte der in vivo 31Phosphor-Kernspinresonanz-Spektroskopie in der pädiatrischen Diagnostik (1990)
Doctoral advisorKurt Wüthrich
Richard R. Ernst
Other advisorsRobert G. Shulman
Academic work
DisciplinePhysics
Sub-disciplineSpectroscopy
Neuroimaging
InstitutionsEPFL (École Polytechnique Fédérale de Lausanne)
Main interestsBiomedical imaging
Spectroscopy
Spin physics
Brain metabolism
Websitehttps://www.epfl.ch/labs/lifmet/

Career

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Gruetter studied as an undergraduate experimental physics at ETH Zurich, before joining the laboratory of Kurt Wüthrich as a PhD student. He graduated in 1990 with a thesis on "Methodische Aspekte der in vivo 31Phosphor-Kernspinresonanz-Spektroskopie in der pädiatrischen Diagnostik" that was next to Wüthrich also supervised by Richard R. Ernst.[3] In 1992, he went to work with Robert G. Shulman at Yale University as postdoctoral fellow.[4] Following postdoctoral studies with Chris Boesch at the University of Bern,[5] he became in 1994 first an assistant professor at the University of Minnesota's Center for Magnetic Resonance Research, and was promoted in 2003 to the position of a full professor.[6][7]

Since 2005 he has been full professor at EPFL and the head of the Laboratory for functional and metabolic imaging at the School of Basic Sciences.[1][2][8]

Until 2019 he was the director of the Center for Biomedical Imaging.[9]

Research

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Gruetter's research aims at bridging science, and biomedical applications and solutions, by working in a trans-disciplinary manner on magnetic resonance, neurochemistry and diabetes research.[10] His research targets the development of fast shimming techniques[11] and spectroscopy methods at ultra-high magnetic fields in magnetic resonance,[12] and their application in biomedical settings, such as the non-invasive characterization of the metabolism of neural glia cells in both rodent models and humans.[13]

Gruetter contributed to the advancement in magnetic resonance physics and engineering by showing the advantage of higher magnetic fields. His involvement in that field led among others to a fast field mapping method that has proved crucial for the demonstration of the advantage of high magnetic fields for in vivo investigation, and that has found application in several commercial scanners used to correct for susceptibility-induced B0-related distortions;[14] to enable the simultaneous measurement of more than 20 compounds in the brain and thereby allowed for the establishment of neurochemical profiles;[15] and to the creation of mathematical model of brain metabolism encompassing quantitative metabolic rates in the live brain.[16]

More specifically, his contributions led to the direct measurement of brain glucose levels in human brain over time;[17] to the in vivo measurement of glutamine synthesis in brain and the measurement of the antioxidants;[13] to the diagnosis and quantification of glutathione and vitamin C in the brain;[18] and to the in vivo mensuration of brain glycogen metabolism and content.[19]

Through these measurements Gruetter was able to quantify the substantial metabolic in vivo flux of glutamate neurotransmission;[20] to demonstrate in vivo via CO2 fixation that the anaplerotic metabolism in the brain is both important and quantitatively substantial;[21] to prove that brain glycogen is available in substantial amounts as a relevant emergency energy reservoir in condition of glucose-deprivation, such as hypoglycemia,[22][23] which is an important complication in diabetes;[24] and to establish that astrocyte energy metabolism is substantial and that Atp synthesis predominantly occurs by oxidative metabolism.[13]

Distinctions

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Gruetter is a member of the International Society for Magnetic Resonance in Medicine (senior fellow since 2014),[25] the European Society for Magnetic Resonance in Medicine and Biology (fellow since 2011),[26] and the International Society for Neurochemistry.[27]

He is the recipient of the 1999 Young Investigator Award Plenary Lecture by the International Society for Neurochemistry.[2]

Selected works

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References

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  1. ^ a b "LIFMET". www.epfl.ch. Archived from the original on 18 February 2021. Retrieved 2 February 2021.
  2. ^ a b c "Rolff Gruetter". EPFL. Archived from the original on 31 October 2020.
  3. ^ Gruetter, Rolf (1990). Methodische Aspekte der in vivo 31Phosphor-Kernspinresonanz-Spektroskopie in der pädiatrischen Diagnostik (Thesis) (in German). ETH Zurich. doi:10.3929/ethz-a-000605549. hdl:20.500.11850/140473. Archived from the original on 18 February 2021. Retrieved 4 February 2021.
  4. ^ McCarthy, G.; Blamire, A. M.; Rothman, D. L.; Gruetter, R.; Shulman, R. G. (1 June 1993). "Echo-planar magnetic resonance imaging studies of frontal cortex activation during word generation in humans". Proceedings of the National Academy of Sciences. 90 (11): 4952–4956. Bibcode:1993PNAS...90.4952M. doi:10.1073/pnas.90.11.4952. ISSN 0027-8424. PMC 46631. PMID 8506340.
  5. ^ "AMSM: Staff". www.amsm.dkf.unibe.ch. Retrieved 4 February 2021.
  6. ^ Tkáč, I.; Starčuk, Z.; Choi, I.-Y.; Gruetter, R. (1999). "In vivo 1H NMR spectroscopy of rat brain at 1 ms echo time". Magnetic Resonance in Medicine. 41 (4): 649–656. doi:10.1002/(SICI)1522-2594(199904)41:4<649::AID-MRM2>3.0.CO;2-G. PMID 10332839. S2CID 12224754. Archived from the original on 27 July 2020. Retrieved 2 February 2021.
  7. ^ "Rolf Gruetter". www.cmrr.umn.edu. Archived from the original on 7 July 2016. Retrieved 4 February 2021.
  8. ^ Mlynárik, Vladimír; Gambarota, Giulio; Frenkel, Hanne; Gruetter, Rolf (November 2006). "Localized short-echo-time proton MR spectroscopy with full signal-intensity acquisition". Magnetic Resonance in Medicine. 56 (5): 965–970. doi:10.1002/mrm.21043. ISSN 0740-3194. PMID 16991116. S2CID 65469. Archived from the original on 18 February 2021. Retrieved 4 February 2021.
  9. ^ "People – CIBM | Center for Biomedical Imaging". CIBM | Center for Biomedical Imaging. Archived from the original on 24 November 2020. Retrieved 4 February 2021.
  10. ^ "Research". www.epfl.ch. Archived from the original on 18 February 2021. Retrieved 5 February 2021.
  11. ^ Juchem, Christoph; Cudalbu, Cristina; Graaf, Robin A.; Gruetter, Rolf; Henning, Anke; Hetherington, Hoby P.; Boer, Vincent O. (28 June 2020). "B 0 shimming for in vivo magnetic resonance spectroscopy: Experts' consensus recommendations". NMR in Biomedicine. 34 (5): e4350. doi:10.1002/nbm.4350. ISSN 0952-3480. PMID 32596978. S2CID 220253842. Archived from the original on 18 February 2021. Retrieved 5 February 2021.
  12. ^ Reynaud, Olivier; da Silva, Analina R.; Gruetter, Rolf; Jelescu, Ileana O. (August 2019). "Multi-slice passband bSSFP for human and rodent fMRI at ultra-high field". Journal of Magnetic Resonance. 305: 31–40. arXiv:1812.04395. Bibcode:2019JMagR.305...31R. doi:10.1016/j.jmr.2019.05.010. PMID 31195214. S2CID 119203830. Archived from the original on 18 February 2021. Retrieved 5 February 2021.
  13. ^ a b c Sonnay, Sarah; Poirot, Jordan; Just, Nathalie; Clerc, Anne-Catherine; Gruetter, Rolf; Rainer, Gregor; Duarte, João M. N. (March 2018). "Astrocytic and neuronal oxidative metabolism are coupled to the rate of glutamate-glutamine cycle in the tree shrew visual cortex". Glia. 66 (3): 477–491. doi:10.1002/glia.23259. PMID 29120073. S2CID 3732904. Archived from the original on 18 February 2021. Retrieved 5 February 2021.
  14. ^ Jorge, João; Gretsch, Frédéric; Gallichan, Daniel; Marques, José P. (January 2018). "Tracking discrete off-resonance markers with three spokes (trackDOTS) for compensation of head motion and B 0 perturbations: Accuracy and performance in anatomical imaging: TrackDOTS-A New Approach for Head Motion and Field Monitoring". Magnetic Resonance in Medicine. 79 (1): 160–171. doi:10.1002/mrm.26654. hdl:2066/181747. PMID 28261872. S2CID 25876902. Archived from the original on 18 February 2021. Retrieved 5 February 2021.
  15. ^ Larrieu, Thomas; Cherix, Antoine; Duque, Aranzazu; Rodrigues, João; Lei, Hongxia; Gruetter, Rolf; Sandi, Carmen (July 2017). "Hierarchical Status Predicts Behavioral Vulnerability and Nucleus Accumbens Metabolic Profile Following Chronic Social Defeat Stress". Current Biology. 27 (14): 2202–2210.e4. doi:10.1016/j.cub.2017.06.027. PMID 28712571. S2CID 35467463. Archived from the original on 22 May 2020. Retrieved 5 February 2021.
  16. ^ Tristão Pereira, Catarina; Diao, Yujian; Yin, Ting; da Silva, Analina R; Lanz, Bernard; Pierzchala, Katarzyna; Poitry-Yamate, Carole; Jelescu, Ileana O (January 2021). "Synchronous nonmonotonic changes in functional connectivity and white matter integrity in a rat model of sporadic Alzheimer's disease". NeuroImage. 225: 117498. doi:10.1016/j.neuroimage.2020.117498. PMID 33164858. S2CID 225056997. Archived from the original on 3 November 2020. Retrieved 5 February 2021.
  17. ^ Cherix, Antoine; Donati, Guillaume; Lizarbe, Blanca; Lanz, Bernard; Poitry-Yamate, Carole; Lei, Hongxia; Gruetter, Rolf (February 2021). "Excitatory/inhibitory neuronal metabolic balance in mouse hippocampus upon infusion of [U- 13 C 6 ]glucose". Journal of Cerebral Blood Flow & Metabolism. 41 (2): 282–297. doi:10.1177/0271678X20910535. ISSN 0271-678X. PMC 8370000. PMID 32151224. S2CID 212650575.
  18. ^ Corcoba, Alberto; Gruetter, Rolf; Do, Kim Q.; Duarte, João M.N. (September 2017). "Social isolation stress and chronic glutathione deficiency have a common effect on the glutamine-to-glutamate ratio and myo -inositol concentration in the mouse frontal cortex". Journal of Neurochemistry. 142 (5): 767–775. doi:10.1111/jnc.14116. PMID 28664650. S2CID 12833668. Archived from the original on 18 February 2021. Retrieved 5 February 2021.
  19. ^ Soares, Ana Francisca; Gruetter, Rolf; Lei, Hongxia (July 2017). "Technical and experimental features of Magnetic Resonance Spectroscopy of brain glycogen metabolism". Analytical Biochemistry. 529: 117–126. doi:10.1016/j.ab.2016.12.023. PMID 28034790. Archived from the original on 2 June 2018. Retrieved 5 February 2021.
  20. ^ Sonnay, Sarah; Duarte, João M.N.; Just, Nathalie (March 2017). "Lactate and glutamate dynamics during prolonged stimulation of the rat barrel cortex suggest adaptation of cerebral glucose and oxygen metabolism". Neuroscience. 346: 337–348. doi:10.1016/j.neuroscience.2017.01.034. PMID 28153690. S2CID 26124700. Archived from the original on 19 June 2018. Retrieved 5 February 2021.
  21. ^ Račkayová, Veronika; Simicic, Dunja; Donati, Guillaume; Braissant, Olivier; Gruetter, Rolf; McLin, Valérie A.; Cudalbu, Cristina (2 February 2021). "Late post‐natal neurometabolic development in healthy male rats using 1 H and 31 P magnetic resonance spectroscopy". Journal of Neurochemistry. 157 (3): 508–519. doi:10.1111/jnc.15294. ISSN 0022-3042. PMID 33421129. S2CID 231437854. Archived from the original on 15 February 2021. Retrieved 5 February 2021.
  22. ^ Duarte, João M. N.; Morgenthaler, Florence D.; Gruetter, Rolf (June 2017). "Glycogen Supercompensation in the Rat Brain After Acute Hypoglycemia is Independent of Glucose Levels During Recovery". Neurochemical Research. 42 (6): 1629–1635. doi:10.1007/s11064-017-2178-z. ISSN 0364-3190. PMID 28083850. S2CID 4010733. Archived from the original on 18 February 2021. Retrieved 5 February 2021.
  23. ^ Soares, Ana Francisca; Nissen, Jakob D.; Garcia‐Serrano, Alba M.; Nussbaum, Sakura S.; Waagepetersen, Helle S.; Duarte, João M. N. (August 2019). "Glycogen metabolism is impaired in the brain of male type 2 diabetic Goto‐Kakizaki rats". Journal of Neuroscience Research. 97 (8): 1004–1017. doi:10.1002/jnr.24437. ISSN 0360-4012. PMID 31044444. S2CID 143425987. Archived from the original on 18 February 2021. Retrieved 5 February 2021.
  24. ^ N. Duarte, João M (2015). "Metabolic Alterations Associated to Brain Dysfunction in Diabetes". Aging and Disease. 6 (5): 304–21. doi:10.14336/AD.2014.1104. ISSN 2152-5250. PMC 4567214. PMID 26425386.
  25. ^ admin. "Fellows of the Society". ISMRM. Archived from the original on 19 November 2020. Retrieved 5 February 2021.
  26. ^ "Honorary Members and Society Fellows". ESMRMB. Archived from the original on 10 February 2021. Retrieved 5 February 2021.
  27. ^ "Rolf Gruetter, PhD | Parkinson's Disease". www.michaeljfox.org. Retrieved 5 February 2021.
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