Evidence map›Paper›PMID 23169348›Full record

ArticleNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2013

The volitional nature of nicotine exposure alters anandamide and oleoylethanolamide levels in the ventral tegmental area.

Matthew W Buczynski, Ilham Y Polis, Loren H Parsons

Open access · bronzeAbstract read
In one paragraph

Article in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 10% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.

  1. Pooled it
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  18. Decreased Cannabinoid CBBiological psychiatry · 2018
    Article
  19. Article
  20. Diacylglycerol lipase disinhibits VTA dopamine neurons during chronic nicotine exposure.Proceedings of the National Academy of Sciences of the United States of America · 2016
    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 1 institution in 1 country.

Matthew W BuczynskiCommittee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA 92037, USA.
Ilham Y Polis
Loren H Parsons
Scripps Research Institute · US

Funding

STRUCTURAL STUDIES OF FAAHP01DA017259 · NIDA · SCRIPPS RESEARCH INSTITUTE, THE · PI BOGER, DALE L, CRAVATT, BENJAMIN F · 2004 to 2013
$10.6M
Effect of nicotine self-administration on endocannabinoids & related lipidsF32DA029994 · NIDA · SCRIPPS RESEARCH INSTITUTE, THE · PI BUCZYNSKI, MATTHEW WALLACE · 2011 to 2013
$161k
NIDA NIH HHS F32 DA029994NIDA NIH HHS P01 DA017259NIDA NIH HHS P01DA017259
6 · The paper itself

Abstract

Cannabinoid-1 receptors (CB(1)) have an important role in nicotine reward and their function is disrupted by chronic nicotine exposure, suggesting nicotine-induced alterations in endocannabinoid (eCB) signaling. However, the effects of nicotine on brain eCB levels have not been rigorously evaluated. Volitional intake of nicotine produces physiological and behavioral effects distinct from forced drug administration, although the mechanisms underlying these effects are not known. This study compared the effects of volitional nicotine self-administration (SA) and forced nicotine exposure (yoked administration (YA)) on levels of eCBs and related neuroactive lipids in the ventral tegmental area (VTA) and other brain regions. Brain lipid levels were indexed both by in vivo microdialysis in the VTA and lipid extractions from brain tissues. Nicotine SA, but not YA, reduced baseline VTA dialysate oleoylethanolamide (OEA) levels relative to nicotine-naïve controls, and increased anandamide (AEA) release during nicotine intake. In contrast, all nicotine exposure paradigms increased VTA dialysate 2-arachidonoyl glycerol (2-AG) levels. Thus, nicotine differentially modulates brain lipid (2-AG, AEA, and OEA) signaling, and these modulations are influenced by the volitional nature of the drug exposure. Corresponding bulk tissue analysis failed to identify these lipid changes. Nicotine exposure had no effect on fatty acid amide hydrolase activity in the VTA, suggesting that changes in AEA and OEA signaling result from alterations in their nicotine-induced biosynthesis. Both CB(1) (by AEA and 2-AG) and non-CB(1) (by OEA) targets can alter the excitability and activity of the dopaminergic neurons in the VTA. Collectively, these findings implicate disrupted lipid signaling in the motivational effects of nicotine.

Indexed as

AnimalsArachidonic AcidsChoice BehaviorEndocannabinoidsMaleNicotineOleic AcidsPolyunsaturated AlkamidesRatsRats, WistarSelf AdministrationVentral Tegmental AreaanandamideArachidonic AcidsEndocannabinoidsNicotineOleic AcidsoleoylethanolamidePolyunsaturated Alkamides

Identifiers

PMID23169348
PMCPMC3572454
OpenAlexW2080998979

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.