The development and validation of a human screening model of tobacco abstinence

Meryem Grabski, H Valerie Curran, David J Nutt, Stephen M Husbands, Stuart G Ferguson, Marcus R Munafò

Research output: Contribution to journalArticle (Academic Journal)

Abstract

INTRODUCTION: Given the low efficacy of smoking cessation methods, an experimental medicine model indicating smoking abstinence would be of great benefit to the development of new treatments. Hence the sensitivity of cognitive tasks and ambulatory craving measures to smoking abstinence were investigated.

METHODS: Cognitive tasks and ambulatory ratings of craving were assessed for sensitivity to acute abstinence (experiment 1), and nicotine replacement therapy administration (NRT) (experiment 2).

RESULTS: In experiment 1 go/no-go performance was improved (Mean Difference [MD] -0.99, 95% CI: -1.90 to -0.08) and craving was lower (Regression Coefficient [RC] -33.39, 95% CI: -39.96 to -26.82) in satiated compared with abstinent smokers. There was no clear evidence that N-back (MD 0.64, 95% CI: -0.42 to 2.51), delay discounting (MD 0.01, 95% CI: 0.001 to 0.005) or dot probe performance (MD 0.61, 95% CI: -0.87 to 1.54) were sensitive to acute abstinence. In experiment 2 go/no-go performance was improved (MD 1.12, 95% CI: 0.16-2.08) and craving was lower (RC -18.59, 95% CI: -24.63 to -12.55) smokers abstinent overnight receiving NRT compared with placebo. There was no clear evidence that N-back (MD -0.25, 95% CI: -1.45 to 0.94), delay discounting (MD 0.01, 95% CI: -0.002 to 0.004) or dot probe performance (MD -0.49, 95% CI: -1.61 to -0.64) were sensitive to NRT.

CONCLUSIONS: Findings from two experiments converge to suggest that abstinence in smokers reliably increases ambulatory craving assessments and, to a lesser extent, decreases go/no-go task performance. These findings can be utilized in the development of an experimental medicine model to test novel treatments for smoking cessation.

Original languageEnglish
Pages (from-to)107720
Number of pages7
JournalDrug and Alcohol Dependence
Volume206
Early online date6 Nov 2019
DOIs
Publication statusPublished - 1 Jan 2020

Structured keywords

  • Bristol Population Health Science Institute
  • Physical and Mental Health
  • Tobacco and Alcohol

Keywords

  • Tobacco withdrawal
  • Tobacco abstinence
  • Cognitive performance
  • Ecological momentary assessment
  • Smoking cessation
  • Experimental medicine model

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