Godlewska, Beata R., Pike, Alexandra orcid.org/0000-0003-1972-5530, Sharpley, Ann L. et al. (4 more authors) (2017) Brain glutamate in anorexia nervosa:a magnetic resonance spectroscopy case control study at 7 Tesla. Psychopharmacology. pp. 421-426. ISSN 1432-2072
Abstract
Rationale: Anorexia nervosa (AN) is a serious psychiatric disorder with high morbidity and mortality. There are no established pharmacological treatments and the neurobiology of the condition is poorly understood. Previous studies using magnetic resonance spectroscopy (MRS) have shown that AN may be associated with reductions in indices of brain glutamate; however, at conventional field strengths (≤3 T), it is difficult to separate glutamate from its precursor and metabolite, glutamine. Objectives: The objective of the present study was to use high field (7 T) MRS to measure concentrations of glutamate, in three separate brain voxels, in women with AN. Methods: We studied 13 female participants with AN and 12 healthy female controls who underwent MRS scanning at 7 T with voxels placed in anterior cingulate cortex, occipital cortex and putamen. Neurometabolites were calculated using the unsuppressed water signal as a reference and corrected for individual cerebrospinal fluid concentration in the voxel. Results: We found that participants with AN had significantly lower concentrations of glutamate in all three voxels (mean reduction 8%, p = 0.002) but glutamine levels were not altered. Concentrations of N-acetylaspartate, creatine, GABA and glutathione were also unchanged. However, inositol was lower in AN participants in anterior cingulate (p = 0.022) and occipital cortex (p = 0.002). Conclusions: Women with AN apparently have widespread reductions in brain glutamate. Further work will be needed to assess if this change has pathophysiological relevance or whether it is a consequence of the many physical changes produced in AN by food restriction.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Funding Information: The study was funded by a programme grant to PJC (MR/K022202/1). Publisher Copyright: © 2016, The Author(s). |
Keywords: | Anorexia nervosa,Glutamate,Glutamine,Magnetic resonance spectroscopy |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Psychology (York) |
Depositing User: | Pure (York) |
Date Deposited: | 06 Jul 2022 09:20 |
Last Modified: | 16 Oct 2024 18:31 |
Published Version: | https://doi.org/10.1007/s00213-016-4477-5 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1007/s00213-016-4477-5 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:188770 |
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Filename: Godlewska2017_Article_BrainGlutamateInAnorexiaNervos.pdf
Description: Brain glutamate in anorexia nervosa: a magnetic resonance spectroscopy case control study at 7 Tesla
Licence: CC-BY 2.5