Evidence map›Paper›PMID 18841348›Full record

ArticlePsychopharmacology2009

Brain serotonin transporter in human methamphetamine users.

Stephen J Kish, Paul S Fitzmaurice, Isabelle Boileau, Gregory A Schmunk, Lee-Cyn Ang, Yoshiaki Furukawa, Li-Jan Chang, Dennis J Wickham, Allan Sherwin, Junchao Tong

Abstract read
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In one paragraph

Article in Psychopharmacology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 12% 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

48 citing papers in PubMed, 1 synthesis or guideline pooled it, 91 citations in OpenAlex.

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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

10 authors at 6 institutions in 3 countries.

Stephen J KishHuman Neurochemical Pathology Laboratory, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada.
Paul S Fitzmaurice
Isabelle Boileau
Gregory A Schmunk
Lee-Cyn Ang
Yoshiaki Furukawa
Li-Jan Chang
Dennis J Wickham
Allan Sherwin
Junchao Tong
Centre for Addiction and Mental Health · CAClark County Public Health · USKing County Medical Examiner's Office · USMcGill University · CANew Zealand Institute for Public Health and Forensic Science · NZWestern University · CA

Funding

IS CHRONIC COCAINE ABUSE TOXIC TO THE HUMAN BRAIN?R01DA007182 · NIDA · UNIVERSITY OF TORONTO · PI KISH, STEPHEN JOHN · 1991 to 2000
$181k
NIDA NIH HHS DA07182
6 · The paper itself

Abstract

rationaleResearch on methamphetamine (MA) toxicity primarily focuses on the possibility that some of the behavioural problems in human MA users might be caused by damage to brain dopamine neurones. However, animal data also indicate that MA can damage brain serotonin neurones, and it has been suggested that cognitive problems and aggression in MA users might be explained by serotonergic damage. As information on the brain serotonin system in human MA users is fragmentary, our objective was to determine whether protein levels of serotonin transporter (SERT), a key marker of serotonin neurones, are decreased in brain of chronic MA users.

methodsSERT immunoreactivity was measured using an immunoblotting procedure in autopsied brain of 16 chronic MA users testing positive for the drug in blood and brain and matched controls.

resultsSERT levels were non-significantly decreased (-14% to -33%) in caudate, putamen and thalamus (normal in hippocampus), and, unlike the robust striatal dopamine reduction, there was marked overlap between control and MA user ranges. Concentrations of SERT were significantly decreased (-23% to -39%) in orbitofrontal and occipital cortices (normal in frontopolar and temporal cortices).

conclusionsOur data suggest that MA might modestly damage brain serotonin neurones and/or inhibit SERT protein expression, with cerebral cortex being more affected than sub-cortical regions. The SERT reduction in orbitofrontal cortex complements other data suggesting involvement of this area in MA-related behaviour. Decreased brain SERT could also be related to the clinical finding that treatment with a selective serotonin re-uptake inhibitor might increase relapse to MA.

Indexed as

Central Nervous System StimulantsMethamphetamineAdultAmphetamine-Related DisordersAutopsyBrain ChemistryDopamineDopamine Plasma Membrane Transport ProteinsFemaleHairHumansHydroxyindoleacetic AcidMaleSerotonin Plasma Membrane Transport ProteinsTryptophan HydroxylaseYoung AdultCentral Nervous System StimulantsDopamineDopamine Plasma Membrane Transport ProteinsHydroxyindoleacetic AcidMethamphetamineSerotonin Plasma Membrane Transport ProteinsTryptophan Hydroxylase

Identifiers

PMID18841348
OpenAlexW2088935764

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.