Evidence map›Paper›PMID 19065145›Full record

ArticleMolecular psychiatry2009

Effect of abstinence challenge on brain function and cognition in smokers differs by COMT genotype.

J Loughead, E P Wileyto, J N Valdez, P Sanborn, K Tang, A A Strasser, K Ruparel, R Ray, R C Gur, C Lerman

Abstract readComparative Study
In one paragraph

Article in Molecular psychiatry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
4.7field-weighted citation impact, top 5% 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

50 citing papers in PubMed, 1 synthesis or guideline pooled it, 78 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Impact of Tryptophan Depletion on Executive System Function during Menopause is Moderated by Childhood Adversity.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2017
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  12. Article
  13. Noradrenergic Enhancement of Motor Learning, Attention, and Working Memory in Humans.The international journal of neuropsychopharmacology · 2021
    Article
  14. Article
  15. Pharmacokinetic Profile of Spectrum Reduced Nicotine Cigarettes.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2020
    Article
  16. Article
  17. Cognitive Effects of Nicotine: Recent Progress.Current neuropharmacology · 2018
    Review
  18. Article
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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 1 institution in 1 country.

J LougheadBrain Behavior Laboratory, Division of Neuropsychiatry, Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104, USA. loughead@upenn.edu
E P Wileyto
J N Valdez
P Sanborn
K Tang
A A Strasser
K Ruparel
R Ray
R C Gur
C Lerman
University of Pennsylvania · US

Funding

TRANSDISCIPLINARY TOBACCO USE RESEARCH CENTERSP50CA084718 · NCI · UNIVERSITY OF PENNSYLVANIA · PI LERMAN, CARYN · 1999 to 2008
$17.8M
statistics coreP30NS045839 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI DETRE, JOHN A · 2003 to 2017
$10.1M
NCI NIH HHS P50 CA084718NCI NIH HHS P50CA/DA84718NINDS NIH HHS P30 NS045839
6 · The paper itself

Abstract

The val allele of the catechol-O-methyltransferase (COMT) val(158)met polymorphism has been linked with nicotine dependence and with cognitive performance in healthy volunteers. We tested the hypothesis that the val allele is a risk factor for altered brain function and cognition during nicotine abstinence as compared with the normal smoking state. Chronic smokers (n=33) were genotyped prospectively for the COMT polymorphism for balanced selection of met/met, val/met and val/val groups. A visual N-back working memory task was performed during two separate blood oxygen level-dependent (BOLD) functional magnetic resonance imaging sessions in counterbalanced order: (1) smoking as usual, and (2)>or=14 h confirmed abstinence. Significant genotype by session interactions were observed for BOLD signal in right dorsolateral prefrontal cortex (DLPFC; (P=0.0005), left DLPFC (P=0.02) and dorsal cingulate/medial prefrontal cortex (P=0.01) as well as for task reaction time (P=0.03). Smokers with val/val genotypes were more sensitive to the abstinence challenge than carriers of the met allele, with the greatest effects on BOLD signal and performance speed at the highest working memory load. These data suggest a novel brain-behavior mechanism that may underlie the increased susceptibility to nicotine dependence and smoking relapse associated with the COMT val allele. Exploration of the effects of COMT inhibitors as a possible smoking cessation aid in this group may be warranted.

Indexed as

AdultCatechol O-MethyltransferaseCognitionFemaleHumansMagnetic Resonance ImagingMaleMemory, Short-TermPattern Recognition, VisualPrefrontal CortexProspective StudiesSmokingSmoking CessationYoung AdultCatechol O-Methyltransferase

Identifiers

PMID19065145
PMCPMC3896978
OpenAlexW1995784890

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.