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Lactate topography of the human brain using hyperpolarized 13C-MRI.
Lee, Casey Y; Soliman, Hany; Geraghty, Benjamin J; Chen, Albert P; Connelly, Kim A; Endre, Ruby; Perks, William J; Heyn, Chris; Black, Sandra E; Cunningham, Charles H.
Affiliation
  • Lee CY; Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada; Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.
  • Soliman H; Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.
  • Geraghty BJ; Physical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada.
  • Chen AP; GE Healthcare, Toronto, Ontario, Canada.
  • Connelly KA; Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada.
  • Endre R; Physical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada.
  • Perks WJ; Pharmacy, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.
  • Heyn C; Radiology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.
  • Black SE; Department of Medicine (Neurology) and Hurvitz Brain Sciences Research Program, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.
  • Cunningham CH; Physical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada. Electronic address: charles.cunningham@utoronto.ca.
Neuroimage ; 204: 116202, 2020 01 01.
Article in En | MEDLINE | ID: mdl-31557546
ABSTRACT
Lactate is now recognized as an important intermediate in brain metabolism, but its role is still under investigation. In this work we mapped the distribution of lactate and bicarbonate produced from intravenously injected 13C-pyruvate over the whole brain using a new imaging method, hyperpolarized 13C MRI (N = 14, ages 23 to 77). Segmenting the 13C-lactate images into brain atlas regions revealed a pattern of lactate that was preserved across individuals. Higher lactate signal was observed in cortical grey matter compared to white matter and was highest in the precuneus, cuneus and lingual gyrus. Bicarbonate signal, indicating flux of [1-13C]pyruvate into the TCA cycle, also displayed consistent spatial distribution. One-way ANOVA to test for significant differences in lactate among atlas regions gave F = 87.6 and p < 10-6. This report of a "lactate topography" in the human brain and its consistent pattern is evidence of region-specific lactate biology that is preserved across individuals.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Cerebral Cortex / Lactic Acid / Gray Matter / White Matter / Carbon-13 Magnetic Resonance Spectroscopy Limits: Adult / Aged / Female / Humans / Male / Middle aged Language: En Journal: Neuroimage Journal subject: DIAGNOSTICO POR IMAGEM Year: 2020 Document type: Article Affiliation country: Canada
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Cerebral Cortex / Lactic Acid / Gray Matter / White Matter / Carbon-13 Magnetic Resonance Spectroscopy Limits: Adult / Aged / Female / Humans / Male / Middle aged Language: En Journal: Neuroimage Journal subject: DIAGNOSTICO POR IMAGEM Year: 2020 Document type: Article Affiliation country: Canada