Evidence map›Paper›PMID 17353942›Full record

Trial reportJournal of psychiatry & neuroscience : JPN2007

Mood-elevating effects of d-amphetamine and incentive salience: the effect of acute dopamine precursor depletion.

Marco Leyton, Marije aan het Rot, Linda Booij, Glen B Baker, Simon N Young, Chawki Benkelfat

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of psychiatry & neuroscience : JPN, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
1.5field-weighted citation impact, top 21% 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

34 citing papers in PubMed, 98 citations in OpenAlex.

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  7. Acute phenylalanine/tyrosine depletion reduces motivation to smoke cigarettes across stages of addiction.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2011
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  13. Review
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  15. Positive Affect: Nature and brain bases of liking and wanting.Current opinion in behavioral sciences · 2021
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  16. Dose-response effects of d-amphetamine on effort-based decision-making and reinforcement learning.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2021
    Article
  17. Review
  18. The Role of Tryptophan and Tyrosine in Executive Function and Reward Processing.International journal of tryptophan research : IJTR · 2020
    Review
  19. Article
  20. 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

6 authors at 1 institution in 1 country.

Marco LeytonDepartment of Psychiatry, McGill University, Montréal, Que. marco.leyton@mcgill.ca
Marije aan het Rot
Linda Booij
Glen B Baker
Simon N Young
Chawki Benkelfat
McGill University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveMidbrain dopamine transmission is thought to regulate responses to rewarding drugs and drug-paired stimuli; however, the exact contribution, particularly in humans, remains unclear. In the present study, we tested whether decreasing dopamine synthesis, as produced by acute phenylalanine/tyrosine depletion (APTD), would alter responses to the stimulant drug, d-amphetamine.

methodsOn 3 separate days, 14 healthy men received d-amphetamine (0.3 mg/kg, given orally) plus a nutritionally balanced amino acid mixture, the phenylalanine/tyrosine-deficient mixture or the phenylalanine/tyrosine-deficient mixture followed by the immediate dopamine precursor, L-DOPA (Sinemet, 2 x 100 mg/25 mg). Responses to these treatments were assessed with visual analog scales, the Profile of Mood States, and a computerized Go/No-Go task.

resultsd-Amphetamine elicited its prototypical subjective effects, but these were not altered by APTD. In comparison, APTD significantly increased commission errors on the Go/No-Go task and did so uniquely in conditions where subjects were rewarded for making correct responses; this effect of APTD was prevented by L-DOPA.

conclusionsTogether these results support the hypothesis that, in healthy men, dopamine is not closely linked to euphorogenic effects of abused substances but does affect the salience of reward-related cues and the ability to respond to them preferentially.

Indexed as

MotivationAdultAffectAttentionCarbidopaCentral Nervous System StimulantsDextroamphetamineDopamineDouble-Blind MethodDrug CombinationsHumansLevodopaMaleNeuropsychological TestsPain MeasurementPhenylalanineCarbidopacarbidopa, levodopa drug combinationCentral Nervous System StimulantsDextroamphetamineDopamineDrug CombinationsLevodopaPhenylalanineTyrosine

Identifiers

PMID17353942
PMCPMC1810580
OpenAlexW1535680291

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.