Evidence map›Paper›PMID 27696119›Full record

ReviewNeurochemical research2017

Interactions in the Metabolism of Glutamate and the Branched-Chain Amino Acids and Ketoacids in the CNS.

Marc Yudkoff

Open access · greenAbstract readReview
In one paragraph

Review in Neurochemical research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed
5.0field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

83 citing papers in PubMed, 131 citations in OpenAlex.

  1. Trial
  2. A metabolic basis for motor deficits in mice lacking BCKDK.The Journal of nutritional biochemistry · 2026
    Article
  3. The E3 Ubiquitin Ligase UBE3B Regulates Synaptic Development and Cortical Network Activity.Autism research : official journal of the International Society for Autism Research · 2026
    Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Signs of Alzheimer's Disease: Tied to Aging.International journal of molecular sciences · 2025
    Review
  12. Metabolomics: a new frontier in neurodegenerative disease biomarker discovery.Metabolomics : Official journal of the Metabolomic Society · 2025
    Review
  13. Article
  14. Metabolic and lipid alterations in multiple sclerosis linked to disease severity.Multiple sclerosis (Houndmills, Basingstoke, England) · 2025
    Article
  15. Article
  16. Targeting amino acid in tumor therapy.Frontiers in oncology · 2025
    Review
  17. Review
  18. Review
  19. Article
  20. Review

23 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Marc YudkoffDepartment of Pediatrics, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA. yudkoff@email.chop.edu.ORCID http://orcid.org/0000-0002-9628-9608
Children's Hospital of Philadelphia · US

Funding

The Intellectual and Developmental Disabilities Research Center at CHOP/PennU54HD086984 · NICHD · CHILDREN'S HOSP OF PHILADELPHIA · PI PUTT, MARY E. · 2016 to 2020
$6.3M
NICHD NIH HHS U54 HD086984
6 · The paper itself

Abstract

Glutamatergic neurotransmission entails a tonic loss of glutamate from nerve endings into the synapse. Replacement of neuronal glutamate is essential in order to avoid depletion of the internal pool. In brain this occurs primarily via the glutamate-glutamine cycle, which invokes astrocytic synthesis of glutamine and hydrolysis of this amino acid via neuronal phosphate-dependent glutaminase. This cycle maintains constancy of internal pools, but it does not provide a mechanism for inevitable losses of glutamate N from brain. Import of glutamine or glutamate from blood does not occur to any appreciable extent. However, the branched-chain amino acids (BCAA) cross the blood-brain barrier swiftly. The brain possesses abundant branched-chain amino acid transaminase activity which replenishes brain glutamate and also generates branched-chain ketoacids. It seems probable that the branched-chain amino acids and ketoacids participate in a "glutamate-BCAA cycle" which involves shuttling of branched-chain amino acids and ketoacids between astrocytes and neurons. This mechanism not only supports the synthesis of glutamate, it also may constitute a mechanism by which high (and potentially toxic) concentrations of glutamate can be avoided by the re-amination of branched-chain ketoacids.

Indexed as

Amino Acids, Branched-ChainAnimalsBiological TransportCentral Nervous SystemGlutamic AcidHumansKeto AcidsAmino Acids, Branched-ChainGlutamic AcidKeto AcidsBrainBrain metabolismBranched-chain amino acidsGlutamateMetabolism

Identifiers

PMID27696119
PMCPMC5285401
OpenAlexW2525087902

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.