Cited by 60Neuroscience and Neuropharmacology ResearchRegulation of Appetite and ObesityAmino Acid Enzymes and Metabolism

GDH-Dependent Glutamate Oxidation in the Brain Dictates Peripheral Energy Substrate Distribution

Open access
Karaca, Melis, Frigerio, Francesca, Migrenne, Stephanie, Martin-Levilain, Juliette, Skytt, Dorte M., Pajecka, Kamilla, Martin-del-Rio, Rafael, Gruetter, Rolf +4 more·2015·Cell Reports

Abstract

Glucose, the main energy substrate used in the CNS, is continuously supplied by the periphery. Glutamate, the major excitatory neurotransmitter, is foreseen as a complementary energy contributor in the brain. In particular, astrocytes actively take up glutamate and may use it through oxidative glutamate dehydrogenase (GDH) activity. Here, we investigated the significance of glutamate as energy substrate for the brain. Upon glutamate exposure, astrocytes generated ATP in a GDH-dependent way. The observed lack of glutamate oxidation in brain-specific GDH null CnsGlud1(-/-) mice resulted in a central energy-deprivation state with increased ADP/ATP ratios and phospho-AMPK in the hypothalamus. This induced changes in the autonomous nervous system balance, with increased sympathetic activity promoting hepatic glucose production and mobilization of substrates reshaping peripheral energy stores. Our data reveal the importance of glutamate as necessary energy substrate for the brain and the role of central GDH in the regulation of whole-body energy homeostasis.

Integrity signals

Registry

Crossref · 10.1016/j.celrep.2015.09.003

Cites

74 of 74 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Karaca, M., Frigerio, F., Migrenne, S., Martin-Levilain, J., Skytt, D. M., Pajecka, K., Martin-del-Rio, R., Gruetter, R., Tamarit-Rodriguez, J., Waagepetersen, H. S., Magnan, C., & Maechler, P.
Affiliations
  • University of Geneva (CH)
  • University of Copenhagen (DK)
Corresponding author
Maechler, Pierre
Venue
Cell Reports
Publisher
Elsevier BV
Published
2015-10
Volume
13
Issue
2
Pages
365-375
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2106619430
Cited by
60
References
74
Citations by year
2025: 3 · 2024: 3 · 2023: 6 · 2022: 2 · 2021: 8 · 2020: 4 · 2019: 4 · 2018: 8 · 2017: 11 · 2016: 11
FWCI
4.67
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, other-oa)
  • Archive ouverte UNIGE (University of Geneva) (publishedVersion, other-oa)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
Funders
  • National Science Foundation
  • Sundhed og Sygdom, Det Frie Forskningsråd
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (146984, 135704)
  • H. Lundbeck A/S
  • Medical Research Council
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
Keywords
glutamate oxidation, glutamate dehydrogenase, astrocytes, brain energy metabolism, ATP/ADP ratio, AMPK, hypothalamus, sympathetic nervous system, hepatic glucose production
MeSH terms
Adenosine Triphosphate, Animals, Astrocytes, Cells, Cultured, Energy Metabolism, Glucose, Glutamate Dehydrogenase, Hypothalamus, Liver, Male, Oxidation-Reduction, Receptors, Glutamate, Glutamic Acid, Mice

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review