Evidence map›Paper›PMID 26336934›Full record

ReviewJournal of neurochemistry2015

Main path and byways: non-vesicular glutamate release by system xc(-) as an important modifier of glutamatergic neurotransmission.

Ann Massie, Séverine Boillée, Sandra Hewett, Lori Knackstedt, Jan Lewerenz

Open access · greenAbstract readReview
In one paragraph

Review in Journal of neurochemistry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
4.6field-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

66 citing papers in PubMed, 102 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Review
  5. Intact corticostriatal function in aged system xTranslational psychiatry · 2025
    Article
  6. Plasma Cystine as a Marker of Acute Stroke Severity.Diagnostics (Basel, Switzerland) · 2025
    Article
  7. Review
  8. Article
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  11. Article
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6 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

5 authors at 5 institutions in 4 countries.

Ann MassieDepartment of Pharmaceutical Biotechnology and Molecular Biology, Center for Neurosciences, Vrije Universiteit Brussel, Brussels, Belgium.
Séverine BoilléeInserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.
Sandra HewettDepartment of Biology, Program in Neuroscience, Syracuse University, Syracuse, New York, USA.
Lori KnackstedtPsychology Department, University of Florida, Gainesville, Florida, USA.
Jan LewerenzDepartment of Neurology, Ulm University, Oberer Eselsberg 45, Ulm, Germany.
Institut du Cerveau · FRSyracuse University · USUniversität Ulm · DEUniversity of Florida · USVrije Universiteit Brussel · BE

Funding

IL-1 in Protection and InjuryR01NS051445 · NINDS · UNIVERSITY OF CONNECTICUT SCH OF MED/DNT · PI HEWETT, SANDRA J · 2006 to 2017
$3.2M
GLT-1 Enhancers as Drug Candidates for Treating Cocaine AddictionR01DA037270 · NIDA · TEMPLE UNIV OF THE COMMONWEALTH · PI ABOU-GHARBIA, MAGID, ROTHSTEIN, JEFFREY D · 2014 to 2018
$2.0M
Glutamate Transporters and Cocaine SeekingR01DA033436 · NIDA · UNIVERSITY OF FLORIDA · PI KNACKSTEDT, LORI A · 2012 to 2016
$1.3M
NIDA NIH HHS DA037270NIDA NIH HHS R01 DA033436NIDA NIH HHS R01 DA037270NINDS NIH HHS NIH/NINDS R01NS051445-07NINDS NIH HHS R01 NS051445PHS HHS NIDA DA033436
6 · The paper itself

Abstract

System xc(-) is a cystine/glutamate antiporter that exchanges extracellular cystine for intracellular glutamate. Cystine is intracellularly reduced to cysteine, a building block of GSH. As such, system xc(-) can regulate the antioxidant capacity of cells. Moreover, in several brain regions, system xc(-) is the major source of extracellular glutamate. As such this antiporter is able to fulfill key physiological functions in the CNS, while evidence indicates it also plays a role in certain brain pathologies. Since the transcription of xCT, the specific subunit of system xc(-), is enhanced by the presence of reactive oxygen species and inflammatory cytokines, system xc(-) could be involved in toxic extracellular glutamate release in neurological disorders that are associated with increased oxidative stress and neuroinflammation. System xc(-) has also been reported to contribute to the invasiveness of brain tumors and, as a source of extracellular glutamate, could participate in the induction of peritumoral seizures. Two independent reviews (Pharmacol. Rev. 64, 2012, 780; Antioxid. Redox Signal. 18, 2013, 522), approached from a different perspective, have recently been published on the functions of system xc(-) in the CNS. In this review, we highlight novel achievements and insights covering the regulation of system xc(-) as well as its involvement in emotional behavior, cognition, addiction, neurological disorders and glioblastomas, acquired in the past few years. System xc(-) constitutes an important source of extrasynaptic glutamate in the brain. By modulating the tone of extrasynaptic metabotropic or ionotropic glutamate receptors, it affects excitatory neurotransmission, the threshold for overexcitation and excitotoxicity and, as a consequence, behavior. This review describes the current knowledge of how system xc(-) is regulated and involved in physiological as well as pathophysiological brain functioning.

Indexed as

AnimalsBrainBrain NeoplasmsGlioblastomaGlutamic AcidHumansOxidative StressSynaptic TransmissionGlutamic Acidaddictionemotional and cognitive behaviorglioblastomaglutamateneurological disorderssystem xc−

Identifiers

PMID26336934
PMCPMC4762049
OpenAlexW1773989183

What OpenQuestion holds

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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.