Evidence map›Paper›PMID 25522400›Full record

ArticleThe international journal of neuropsychopharmacology2014

Glutamatergic neurometabolites during early abstinence from chronic methamphetamine abuse.

Joseph O'Neill, Marc C Tobias, Matthew Hudkins, Edythe D London

Open access · bronzeAbstract read
In one paragraph

Article in The international journal of neuropsychopharmacology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 29% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

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  11. Brain imaging and behavior · 2019
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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

4 authors at 1 institution in 1 country.

Joseph O'NeillDivision of Child and Adolescent Psychiatry (Drs O'Neill, Tobias, and Hudkins), and Department of Psychiatry and Biobehavioral Sciences (Drs O'Neill and London), Semel Institute for Neuroscience, and Department of Molecular and Medical Pharmacology (Dr London), and Brain Research Institute (Dr London), University of California, Los Angeles, CA joneill@mednet.ucla.edu.
Marc C TobiasDivision of Child and Adolescent Psychiatry (Drs O'Neill, Tobias, and Hudkins), and Department of Psychiatry and Biobehavioral Sciences (Drs O'Neill and London), Semel Institute for Neuroscience, and Department of Molecular and Medical Pharmacology (Dr London), and Brain Research Institute (Dr London), University of California, Los Angeles, CA.
Matthew HudkinsDivision of Child and Adolescent Psychiatry (Drs O'Neill, Tobias, and Hudkins), and Department of Psychiatry and Biobehavioral Sciences (Drs O'Neill and London), Semel Institute for Neuroscience, and Department of Molecular and Medical Pharmacology (Dr London), and Brain Research Institute (Dr London), University of California, Los Angeles, CA.
Edythe D LondonDivision of Child and Adolescent Psychiatry (Drs O'Neill, Tobias, and Hudkins), and Department of Psychiatry and Biobehavioral Sciences (Drs O'Neill and London), Semel Institute for Neuroscience, and Department of Molecular and Medical Pharmacology (Dr London), and Brain Research Institute (Dr London), University of California, Los Angeles, CA.
King's College London · GB

Funding

NEUROCHEMISTRY OF MODAFINIL-MA INTERACTION IN RAT BRAINP20DA022539 · NIDA · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI LONDON, EDYTHE DANICK · 2006 to 2009
$2.9M
Neural Systems, Inhibitory Control, and Methamphetamine DependenceR01DA020726 · NIDA · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI LONDON, EDYTHE DANICK · 2005 to 2008
$2.0M
Magnetic Resonance Spectroscopic Imaging of the Brain in Methamphetamine AbuseR21DA023192 · NIDA · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI O'NEILL, JOSEPH · 2007 to 2008
$419k
1H MRSI/Response Inhibition/Methamphetamine AbusersR03DA020512 · NIDA · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI O'NEILL, JOSEPH · 2005 to 2005
$230k
NIDA NIH HHS P20 DA022539NIDA NIH HHS P20DA022539NIDA NIH HHS R01 DA020726NIDA NIH HHS R01DA020726NIDA NIH HHS R03 DA020512NIDA NIH HHS R03DA20512NIDA NIH HHS R21 DA023192NIDA NIH HHS R21DA023192PHS HHS MOIRR00865
6 · The paper itself

Abstract

backgroundThe acute phase of abstinence from methamphetamine abuse is critical for rehabilitation success. Proton magnetic resonance spectroscopy has detected below-normal levels of glutamate+glutamine in anterior middle cingulate of chronic methamphetamine abusers during early abstinence, attributed to abstinence-induced downregulation of the glutamatergic systems in the brain. This study further explored this phenomenon.

methodsWe measured glutamate+glutamine in additional cortical regions (midline posterior cingulate, midline precuneus, and bilateral inferior frontal cortex) putatively affected by methamphetamine. We examined the relationship between glutamate+glutamine in each region with duration of methamphetamine abuse as well as the depressive symptoms of early abstinence. Magnetic resonance spectroscopic imaging was acquired at 1.5 T from a methamphetamine group of 44 adults who had chronically abused methamphetamine and a control group of 23 age-, sex-, and tobacco smoking-matched healthy volunteers. Participants in the methamphetamine group were studied as inpatients during the first week of abstinence from the drug and were not receiving treatment.

resultsIn the methamphetamine group, small but significant (5-15%, P<.05) decrements (vs control) in glutamate+glutamine were observed in posterior cingulate, precuneus, and right inferior frontal cortex; glutamate+glutamine in posterior cingulate was negatively correlated (P<.05) with years of methamphetamine abuse. The Beck Depression Inventory score was negatively correlated (P<.005) with glutamate+glutamine in right inferior frontal cortex.

conclusionsOur findings support the idea that glutamatergic metabolism is downregulated in early abstinence in multiple cortical regions. The extent of downregulation may vary with length of abuse and may be associated with severity of depressive symptoms emergent in early recovery.

Indexed as

AdultAmphetamine-Related DisordersBrainCase-Control StudiesFemaleGlutamic AcidGlutamineHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMagnetic Resonance SpectroscopyMaleProtonsStatistics as TopicSubstance-Related DisordersYoung AdultGlutamic AcidGlutamineProtonsabstinencedepressionglutamatemagnetic resonance spectroscopymethamphetamine

Identifiers

PMID25522400
PMCPMC4360253
OpenAlexW2162277669

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.