Evidence map›Paper›PMID 29061508›Full record

ArticleNeuropharmacology2018

Endogenous glutamate within the prelimbic and infralimbic cortices regulates the incubation of cocaine-seeking in rats.

Christina B Shin, Taylor J Templeton, Alvin S Chiu, Jennifer Kim, Ellen S Gable, Philip A Vieira, Tod E Kippin, Karen K Szumlinski

Open access · greenAbstract read
In one paragraph

Article in Neuropharmacology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
1.7field-weighted citation impact, top 17% 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

30 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. Inactivation of NMDAR and CaMKII signaling within the prelimbic cortex blocks incubated cocaine- and sucrose-craving.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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  16. Review
  17. Review
  18. Prelimbic Cortex Activity during a Distress Tolerance Task Predicts Cocaine-Seeking Behavior in Male, But Not Female Rats.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  19. Article
  20. FACTORS CONTRIBUTING TO THE ESCALATION OF ALCOHOL CONSUMPTION.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

8 authors at 1 institution in 1 country.

Christina B ShinDepartment of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA 93106-9660, USA.
Taylor J TempletonDepartment of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA 93106-9660, USA.
Alvin S ChiuDepartment of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA 93106-9660, USA.
Jennifer KimDepartment of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA 93106-9660, USA.
Ellen S GableDepartment of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA 93106-9660, USA.
Philip A VieiraCenter for Collaborative Biotechnology, University of California Santa Barbara, Santa Barbara, CA 93106-9660, USA.
Tod E KippinDepartment of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA 93106-9660, USA; Department of Molecular, Cellular and Developmental Biology, Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA 93106-9660, USA; Center for Collaborative Biotechnology, University of California Santa Barbara, Santa Barbara, CA 93106-9660, USA.
Karen K SzumlinskiDepartment of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA 93106-9660, USA; Department of Molecular, Cellular and Developmental Biology, Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA 93106-9660, USA. Electronic address: karen.szumlinski@psych.ucsb.edu.
University of California, Santa Barbara · US

Funding

Homer-mediated signaling and cocaine addictionR01DA024038 · NIDA · UNIVERSITY OF CALIFORNIA SANTA BARBARA · PI SZUMLINSKI, KAREN KATHLEEN · 2008 to 2012
$1.5M
NIDA NIH HHS R01 DA024038
6 · The paper itself

Abstract

The incubation of cue-reinforced cocaine-seeking coincides with increased extracellular glutamate within the ventromedial prefrontal cortex (vmPFC). The vmPFC is comprised of two subregions that oppositely regulate drug-seeking, with infralimbic (IL) activity inhibiting, and prelimibic (PL) activity facilitating, drug-seeking. Thus, we hypothesized that increasing and decreasing endogenous glutamate within the IL would attenuate and potentiate, respectively, cue-reinforced drug-seeking behavior, with the converse effects observed upon manipulations of endogenous glutamate within the PL. Male Sprague-Dawley rats were trained to self-administer cocaine (0.25 mg/infusion; 6 h/day X 10 days), the delivery of which was signaled by a tone-light cue. Rats were then subdivided into 3 or 30 day withdrawal groups. For testing, rats were microinjected with vehicle, 20 mM of the mGlu2/3 agonist LY379268 (to lower endogenous glutamate), or 300 μM of the excitatory amino acid transporter inhibitor threo-β-benzyloxyaspartate (TBOA; to raise endogenous glutamate) into either the IL or PL (0.5 μl/side) and then given a 30-min test for cue-reinforced drug-seeking. Vehicle-infused rats exhibited incubated responding on the cocaine-associated lever. Neither LY379268 nor TBOA altered behavior at 3 days withdrawal, indicating that glutamate within neither subregion regulates cue-reinforced drug-seeking during early withdrawal. At 30 days withdrawal, intra-PL LY379268 microinjection significantly decreased drug-seeking behavior, while the effect was more modest when infused intra-IL. Interestingly, intra-IL TBOA attenuated incubated drug-seeking during protracted withdrawal, but did not affect behavior when infused intra-PL. These results argue that glutamate release within the PL in response to drug-seeking likely drives the manifestation of incubated cocaine-seeking during protracted withdrawal.

Indexed as

Amino AcidsAnesthetics, LocalAnimalsAspartic AcidBridged Bicyclo Compounds, HeterocyclicCerebral CortexCocaineCocaine-Related DisordersConditioning, OperantDrug-Seeking BehaviorExcitatory Amino Acid AgentsGlutamic AcidMaleMicrodialysisMicroinjectionsRatsAmino AcidsAnesthetics, LocalAspartic AcidbenzyloxyaspartateBridged Bicyclo Compounds, HeterocyclicCocaineExcitatory Amino Acid AgentsGlutamic AcidLY 379268CocaineCravingDrug-seekingGlutamateIncubationInfralimbic cortexPrelimbic cortex

Identifiers

PMID29061508
PMCPMC6400061
OpenAlexW2766625203

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.