Evidence map›Paper›PMID 20188795›Full record

Trial reportNeuroscience letters2010

The short (S) allele of the serotonin transporter polymorphism and acute tryptophan depletion both increase impulsivity in men.

Espen Walderhaug, Aryeh Isaac Herman, Andres Magnusson, Michael John Morgan, Nils Inge Landrø

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Neuroscience letters, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.7field-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

25 citing papers in PubMed, 60 citations in OpenAlex.

  1. Trial
  2. Effects of tryptophan depletion and a simulated alcohol binge on impulsivity.Experimental and clinical psychopharmacology · 2015
    Trial
  3. A nonhuman primate model of human non-suicidal self-injury: serotonin-transporter genotype-mediated typologies.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2022
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Genetic and neural correlates of romantic relationship satisfaction.Social cognitive and affective neuroscience · 2016
    Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Genetics of impulsive behaviour.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2013
    Review
  18. Article
  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

5 authors at 4 institutions in 4 countries.

Espen WalderhaugDepartment of Psychiatry, Yale University School of Medicine, West Haven, CT 06516, USA. espen.walderhaug@yale.edu
Aryeh Isaac Herman
Andres Magnusson
Michael John Morgan
Nils Inge Landrø
University of Oslo · NONational University Hospital of Iceland · ISUniversity of Sussex · GBYale University · US

Funding

SUBSTANCE ABUSEK12DA000167 · NIDA · YALE UNIVERSITY · PI STEPHANIE S O'MALLEY, Marc N Potenza · 1991 to 2026
$17.7M
NIDA NIH HHS K12 DA000167
6 · The paper itself

Abstract

Reduced serotonergic neurotransmission is implicated in impulsive behavior. We studied the triallelic system of the serotonin transporter gene linked polymorphic region (5-HTTLPR) and acute manipulation of serotonin together to further delineate the mechanisms by which serotonergic neurotransmission affects impulsivity. Fifty-two healthy participants (38 men and 14 women) underwent acute tryptophan depletion (ATD) or placebo in a randomized, double-blind, parallel group experiment. Impulsive response style was measured on two versions of the Continuous Performance Task (CPT), and calculated using signal detection theory. We observed a dose-dependent effect for the short (S') allele of the 5-HTTLPR on impulsive response style. Individuals who had the S'/S' genotype were more impulsive than individuals with the L/S' genotype. Participants with the L/S' genotype were more impulsive than those with the L/L genotype. ATD increased impulsivity in men, and decreased impulsivity in women. These data demonstrate for the first time that reduced serotonergic tone as a result of either 5-HTTLPR genotype, or experimental ATD, are both independently and additively, associated with elevated impulsive response style in Caucasian men.

Indexed as

AdultAllelesDouble-Blind MethodFemaleGenotypeHumansImpulsive BehaviorMalePolymorphism, GeneticSerotonin Plasma Membrane Transport ProteinsSex FactorsSignal Detection, PsychologicalTryptophanWhite PeopleSerotonin Plasma Membrane Transport ProteinsTryptophan

Identifiers

PMID20188795
PMCPMC3662246
OpenAlexW2138797692

What OpenQuestion holds

Textmetadata
LicenceTDM
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.