Evidence map›Paper›PMID 22479593›Full record

ArticlePloS one2012

Extinction-dependent alterations in corticostriatal mGluR2/3 and mGluR7 receptors following chronic methamphetamine self-administration in rats.

Marek Schwendt, Carmela M Reichel, Ronald E See

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
1.6field-weighted citation impact, top 19% 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

40 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. mGlu2 Receptors in the Basal Ganglia: A New Frontier in Addiction Therapy.Frontiers in bioscience (Landmark edition) · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Oral self-administration of pregabalin in a mouse model and the resulting drug addiction features.Saudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society · 2024
    Article
  10. Article
  11. Review
  12. Investigating the potential of mirtazapine to induce drug-seeking behavior in free-choice drinking mouse model.Saudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society · 2022
    Article
  13. Methamphetamine Dysregulation of the Central Nervous System and Peripheral Immunity.The Journal of pharmacology and experimental therapeutics · 2021
    Review
  14. Review
  15. Review
  16. Review
  17. Article
  18. The effect of chronic oxytocin treatment during abstinence from methamphetamine self-administration on incubation of craving, reinstatement, and anxiety.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
    Article
  19. Article
  20. AMPA receptor and metabotropic glutamate receptor 1 adaptations in the nucleus accumbens core during incubation of methamphetamine craving.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2019
    Article
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

3 authors at 2 institutions in 2 countries.

Marek SchwendtDepartment of Neurosciences, Medical University of South Carolina, Charleston, South Carolina, United States of America. schwendt@musc.edu
Carmela M Reichel
Ronald E See
Medical University of South Carolina · USCenter for Forensic Mental Health, Chiba University · JP

Funding

Corticostriatal Neuroplasticity and Cognition in Methamphetamine AddictionR01DA033049 · NIDA · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI SCOFIELD, MICHAEL DAVID · 2012 to 2022
$3.4M
Translational Research in Addiction CenterP20DA022658 · NIDA · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI SEE, RONALD E · 2006 to 2009
$3.0M
MUSC FACIL EXPANSION &RENOV: SLE C06RR015455 · NCRR · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI RAYMOND, JOHN R · 2002 to 2002
$2.0M
NCRR NIH HHS C06 RR015455NIDA NIH HHS P20 DA022658NIDA NIH HHS P20DA022658NIDA NIH HHS R01 DA033049
6 · The paper itself

Abstract

Methamphetamine (meth) is a highly addictive and widely abused psychostimulant. Repeated use of meth can quickly lead to dependence, and may be accompanied by a variety of persistent psychiatric symptoms and cognitive impairments. The neuroadaptations underlying motivational and cognitive deficits produced by chronic meth intake remain poorly understood. Altered glutamate neurotransmission within the prefrontal cortex (PFC) and striatum has been linked to both persistent drug-seeking and cognitive dysfunction. Therefore, the current study investigated changes in presynaptic mGluR receptors within corticostriatal circuitry after extended meth self-administration. Rats self-administered meth (or received yoked-saline) in 1 hr/day sessions for 7 days (short-access) followed by 14 days of 6 hrs/day (long-access). Rats displayed a progressive escalation of daily meth intake up to 6 mg/kg per day. After cessation of meth self-administration, rats underwent daily extinction or abstinence without extinction training for 14 days before being euthanized. Synaptosomes from the medial PFC, nucleus accumbens (NAc), and the dorsal striatum (dSTR) were isolated and labeled with membrane-impermeable biotin in order to measure surface mGluR2/3 and mGluR7 receptors. Extended access to meth self-administration followed by abstinence decreased surface and total levels of mGluR2/3 receptors in the NAc and dSTR, while in the PFC, only a loss of surface mGluR2/3 and mGluR7 receptors was detected. Daily extinction trials reversed the downregulation of mGluR2/3 receptors in the NAc and dSTR and mGluR7 in the PFC, but downregulation of surface mGluR2/3 receptors in the PFC was present regardless of post-meth experience. Thus, extinction learning can selectively restore some populations of downregulated mGluRs after prolonged exposure to meth. The present findings could have implications for our understanding of the persistence (or recovery) of meth-induced motivational and cognitive deficits.

Indexed as

AnimalsCerebral CortexCognitionCorpus StriatumExtinction, PsychologicalGene Expression RegulationMaleMethamphetamineMotivationPrefrontal CortexRatsRats, Long-EvansReceptors, Metabotropic GlutamateSelf AdministrationSympathomimeticsmetabotropic glutamate receptor 2metabotropic glutamate receptor 3metabotropic glutamate receptor 7MethamphetamineReceptors, Metabotropic GlutamateSympathomimetics

Identifiers

PMID22479593
PMCPMC3315516
OpenAlexW2033728865

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.