Evidence map›Paper›PMID 32601455›Full record

ArticleMolecular psychiatry2021

Impaired glutamate homeostasis in the nucleus accumbens in human cocaine addiction.

Etna J E Engeli, Niklaus Zoelch, Andreas Hock, Carlos Nordt, Lea M Hulka, Matthias Kirschner, Milan Scheidegger, Fabrizio Esposito, Markus R Baumgartner, Anke Henning and 3 more

Open access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Molecular psychiatry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 65 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Cue-elicited prefrontal gamma-aminobutyric acid (GABA) dynamics in cannabis use disorder.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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  7. Cue-induced Magnetic Resonance Spectroscopy of Glutamate in Addiction Research: Current Evidence, Pros, and Cons.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2025
    Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Higher striatal glutamate in male youth with internet gaming disorder.European archives of psychiatry and clinical neuroscience · 2024
    Article
  13. Frontiers in psychiatry · 2024
    Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Lower dACC glutamate in cannabis users during early phase abstinence.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2022
    Article
  19. Article
  20. The effects of early life stress on impulsivity.Neuroscience and biobehavioral reviews · 2022
    Review
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

13 authors at 3 institutions in 5 countries.

Etna J E EngeliCentre for Addictive Disorders, Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland. etna.engeli@bli.uzh.ch.ORCID http://orcid.org/0000-0001-7176-8728
Niklaus ZoelchInstitute for Biomedical Engineering, University of Zurich and Swiss Federal Institute of Technology Zurich, Zurich, Switzerland.ORCID http://orcid.org/0000-0002-9722-7783
Andreas HockInstitute for Biomedical Engineering, University of Zurich and Swiss Federal Institute of Technology Zurich, Zurich, Switzerland.
Carlos NordtCentre for Addictive Disorders, Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland.ORCID http://orcid.org/0000-0002-1156-152X
Lea M HulkaCentre for Addictive Disorders, Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland.
Matthias KirschnerCentre for Addictive Disorders, Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland.
Milan ScheideggerDepartment of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland.
Fabrizio EspositoDepartment of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Baronissi, Salerno, Italy.ORCID http://orcid.org/0000-0002-5099-9786
Markus R BaumgartnerCentre for Forensic Hair Analytics, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland.
Anke HenningInstitute for Biomedical Engineering, University of Zurich and Swiss Federal Institute of Technology Zurich, Zurich, Switzerland.
Erich SeifritzDepartment of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland.
Boris B QuednowZurich Centre for Integrative Human Physiology, University of Zurich, Zurich, Switzerland.ORCID http://orcid.org/0000-0001-7933-2865
Marcus HerdenerCentre for Addictive Disorders, Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland.ORCID http://orcid.org/0000-0001-5830-1971
University of Zurich · CHMontreal Neurological Institute and Hospital · CAUniversity of Salerno · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cocaine addiction is characterized by overwhelming craving for the substance, which drives its escalating use despite adverse consequences. Animal models suggest a disrupted glutamate homeostasis in the nucleus accumbens to underlie addiction-like behavior. After chronic administration of cocaine, rodents show decreased levels of accumbal glutamate, whereas drug-seeking reinstatement is associated with enhanced glutamatergic transmission. However, due to technical obstacles, the role of disturbed glutamate homeostasis for cocaine addiction in humans remains only partially understood, and accordingly, no approved pharmacotherapy exists. Here, we applied a tailored proton magnetic resonance spectroscopy protocol that allows glutamate quantification within the human nucleus accumbens. We found significantly reduced basal glutamate concentrations in the nucleus accumbens in cocaine-addicted (N = 26) compared with healthy individuals (N = 30), and increased glutamate levels during cue-induced craving in cocaine-addicted individuals compared with baseline. These glutamatergic alterations, however, could not be significantly modulated by a short-term challenge of N-acetylcysteine (2400 mg/day on 2 days). Taken together, our findings reveal a disturbed accumbal glutamate homeostasis as a key neurometabolic feature of cocaine addiction also in humans. Therefore, we suggest the glutamatergic system as a promising target for the development of novel pharmacotherapies, and in addition, as a potential biomarker for a personalized medicine approach in addiction.

Indexed as

CocaineCocaine-Related DisordersAnimalsDrug-Seeking BehaviorGlutamic AcidHomeostasisHumansNucleus AccumbensSelf AdministrationCocaineGlutamic Acid

Identifiers

PMID32601455
OpenAlexW3037389408

What OpenQuestion holds

Textmetadata
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.