Evidence map›Paper›PMID 26873083›Full record

ArticlePsychopharmacology2016

Attenuation of nicotine-taking and nicotine-seeking behavior by the mGlu2 receptor positive allosteric modulators AZD8418 and AZD8529 in rats.

Xia Li, Manoranjan S D'Souza, Ana M Niño, James Doherty, Alan Cross, Athina Markou

Abstract read
PubMed Publisher
In one paragraph

Article in Psychopharmacology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

17 citing papers in PubMed, 29 citations in OpenAlex.

  1. mGlu2 Receptors in the Basal Ganglia: A New Frontier in Addiction Therapy.Frontiers in bioscience (Landmark edition) · 2025
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  7. Operant self-stimulation of thalamic terminals in the dorsomedial striatum is constrained by metabotropic glutamate receptor 2.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
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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

6 authors at 3 institutions in 1 country.

Xia LiDepartment of Psychiatry, M/C 0603, School of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0603, USA.
Manoranjan S D'SouzaDepartment of Psychiatry, M/C 0603, School of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0603, USA.
Ana M NiñoDepartment of Psychiatry, M/C 0603, School of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0603, USA.
James DohertyPresent address: Sage Therapeutics, Cambridge, MA, 02142, USA.
Alan CrossAstraZeneca Neuroscience Innovative Medicines, Cambridge, MA, 02139, USA.
Athina MarkouDepartment of Psychiatry, M/C 0603, School of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0603, USA. amarkou@ucsd.edu.
University of California, San Diego · USAstraZeneca (United States) · USSage Therapeutics (United States) · US

Funding

Neurobiology of Nicotine Reward and WithdrawalR56DA011946 · NIDA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI MARKOU, ATHINA · 2013 to 2014
$659k
NIDA NIH HHS R56 DA011946
6 · The paper itself

Abstract

rationaleNumerous medication development strategies seek to decrease nicotine consumption and prevent relapse to tobacco smoking by blocking glutamate transmission. Decreasing glutamate release by activating presynaptic inhibitory metabotropic glutamate (mGlu)2/3 receptors inhibits the reinforcing effects of nicotine and blocks cue-induced reinstatement of nicotine-seeking behavior in rats. However, the relative contribution of mGlu2 receptors in nicotine dependence is still unknown.

objectivesThe present study evaluated the role of mGlu2 receptors in nicotine-taking and nicotine-seeking behavior using the novel, relatively selective mGlu2 positive allosteric modulators (PAMs) AZD8418 and AZD8529.

resultsAcute treatment with AZD8418 (0.37, 1.12, 3.73, 7.46, and 14.92 mg/kg) and AZD8529 (1.75, 5.83, 17.5, and 58.3 mg/kg) deceased nicotine self-administration and had no effect on food-maintained responding. Chronic treatment with AZD8418 attenuated nicotine self-administration, but tolerance to this effect developed quickly. The inhibition of nicotine self-administration by chronic AZD8529 administration persisted throughout the 14 days of treatment. Chronic treatment with either PAMs inhibited food self-administration. AZD8418 (acute) and AZD8529 (acute and subchronic) blocked cue-induced reinstatement of nicotine- and food-seeking behavior.

conclusionsThese findings indicate an important role for mGlu2 receptors in the reinforcing properties of self-administered nicotine and the motivational impact of cues that were previously associated with nicotine administration (i.e., cue-induced reinstatement of nicotine-seeking behavior). Thus, mGlu2 PAMs may be useful medications to assist people to quit tobacco smoking and prevent relapse.

Indexed as

AnimalsBehavior, AnimalCuesDose-Response Relationship, DrugDrug-Seeking BehaviorExtinction, PsychologicalIndolesMaleNicotineOxadiazolesRatsRats, WistarReceptors, Metabotropic GlutamateReinforcement, PsychologySelf AdministrationTobacco Use DisorderAZD8529Indolesmetabotropic glutamate receptor 2NicotineOxadiazolesReceptors, Metabotropic GlutamateChronic treatmentMetabotropic glutamate receptorNicotineReinstatementSelf-administration

Identifiers

PMID26873083
OpenAlexW2260410625

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.