The effects of cannabidiol on impulsivity and memory during abstinence in cigarette dependent smokers 

Journal article

Chandni Hindocha, Tom P. Freeman, Meryem Grabski, H. Crudgington, A.C. Davies, J.B. Stroud, Ravi K. Das, Will Lawn, Celia Morgan and H. Valerie Curran. (2018). The effects of cannabidiol on impulsivity and memory during abstinence in cigarette dependent smokers . Scientific Reports. 8(7568), pp. 1-7. https://doi.org/10.1038/s41598-018-25846-2
AuthorsChandni Hindocha, Tom P. Freeman, Meryem Grabski, H. Crudgington, A.C. Davies, J.B. Stroud, Ravi K. Das, Will Lawn, Celia Morgan and H. Valerie Curran
Abstract

Acute nicotine abstinence in cigarette smokers results in deficits in performance on specific cognitive processes, including working memory and impulsivity which are important in relapse. Cannabidiol (CBD), the non-intoxicating cannabinoid found in cannabis, has shown pro-cognitive effects and preliminary evidence has indicated it can reduce the number of cigarettes smoked in dependent smokers. However, the effects of CBD on cognition have never been tested during acute nicotine withdrawal. The present study therefore aimed to investigate if CBD can improve memory and reduce impulsivity during acute tobacco abstinence. Thirty, non-treatment seeking, dependent, cigarette smokers attended two laboratory-based sessions after overnight abstinence, in which they received either 800 mg oral CBD or placebo (PBO), in a randomised order. Abstinence was biologically verified. Participants were assessed on go/no-go, delay discounting, prose recall and N-back (0-back, 1-back, 2-back) tasks. The effects of CBD on delay discounting, prose recall and the N-back (correct responses, maintenance or manipulation) were null, confirmed by a Bayesian analysis, which found evidence for the null hypothesis. Contrary to our predictions, CBD increased commission errors on the go/no-go task. In conclusion, a single 800 mg dose of CBD does not improve verbal or spatial working memory, or impulsivity during tobacco abstinence.

Keywordsbiomarkers; human behaviour; working memory
Year2018
JournalScientific Reports
Journal citation8 (7568), pp. 1-7
PublisherNature Publishing Group
ISSN2045-2322
Digital Object Identifier (DOI)https://doi.org/10.1038/s41598-018-25846-2
Scopus EID2-s2.0-85047097789
Open accessPublished as ‘gold’ (paid) open access
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Deposited13 May 2021
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Chandni Hindocha, Tom P. Freeman, Meryem Grabsk, Jack B. Stroud, Holly Crudgington, Alan C. Davies, Ravi K. Das, William Lawn, Celia Morgan and H. Valerie Curran. (2018). Cannabidiol reverses attentional bias to cigarette cues in a human experimental model of tobacco withdrawal. Addiction. 113(9), pp. 1696-1705. https://doi.org/10.1111/add.14243
Amisulpride for very late-onset schizophrenia-like psychosis: The ATLAS three-arm RCT
Howard, Robert, Cort, Elizabeth, Bradley, Rosie, Harper, Emma, Kelly, Linda, Bentham, Peter, Ritchie, Craig, Reeves, Suzanne, Fawzi, Waleed, Livingston, Gill, Sommerlad, Andrew, Oomman, Sabu, Nazir, Ejaz, Nilforooshan, Ramin, Barber, Robert, Fox, Chris, Macharouthu, Ajay, Ramachandra, Pranathi, Pattan, Vivek, ... Gray, Richard. (2018). Amisulpride for very late-onset schizophrenia-like psychosis: The ATLAS three-arm RCT. Health Technology Assessment. 22(67), pp. 1 - 60. https://doi.org/10.3310/hta22670
Ketamine treatment for depression : Opportunities for clinical innovation and ethical foresight
Singh, Ilina, Morgan, Celia, Curran, Valerie, Nutt, David, Schlag, Anne and McShane, Rupert. (2017). Ketamine treatment for depression : Opportunities for clinical innovation and ethical foresight. The Lancet Psychiatry. 4(5), pp. 419-426. https://doi.org/10.1016/S2215-0366(17)30102-5
Anatomy of a Joint: Comparing Self-Reported and Actual Dose of Cannabis and Tobacco in a Joint, and How These Are Influenced by Controlled Acute Administration
Chandni Hindocha, Tom P. Freeman and H. Valerie Curran. (2017). Anatomy of a Joint: Comparing Self-Reported and Actual Dose of Cannabis and Tobacco in a Joint, and How These Are Influenced by Controlled Acute Administration. Cannabis and Cannabinoid Research. 2(1), pp. 217-223. https://doi.org/10.1089/can.2017.0024
Acute memory and psychotomimetic effects of cannabis and tobacco both 'joint' and individually: A placebo-controlled trial
Hindocha, Chandni, Freeman, T. P., Xia, J. X., Shaban, Natacha D. C. and Curran, Helen V.. (2017). Acute memory and psychotomimetic effects of cannabis and tobacco both 'joint' and individually: A placebo-controlled trial. Psychological Medicine. 47(15), pp. 2708 - 2719. https://doi.org/10.1017/S0033291717001222
Editorial : Reporting guidelines for psychopharmacology
Steckler, Thomas, Curran, H. Valerie, de Wit, Harriet, Howes, Oliver, Hoyer, Daniel, Lucki, Irwin, Miczek, Klaus A., Morrow, A. Leslie, Price, Lawrence H. and Robbins, Trevor W.. (2016). Editorial : Reporting guidelines for psychopharmacology. Psychopharmacology. 233(7), pp. 1131-1134. https://doi.org/10.1007/s00213-016-4252-7
AKT1 genotype moderates the acute psychotomimetic effects of naturalistically smoked cannabis in young cannabis smokers
Morgan, Celia J. A., Freeman, T. P., Powell, J. and Curran, Helen V.. (2016). AKT1 genotype moderates the acute psychotomimetic effects of naturalistically smoked cannabis in young cannabis smokers. Translational Psychiatry. 6(2), pp. 1 - 6. https://doi.org/10.1038/tp.2015.219
Deconstructing the nature of episodic foresight deficits associated with chronic opiate use
Mercuri, Kimberly, Terrett, Gill, Bailey, Phoebe E., Henry, Julie D., Curran, Helen Valerie and Rendell, Peter G.. (2016). Deconstructing the nature of episodic foresight deficits associated with chronic opiate use. British Journal of Clinical Psychology. 55(4), pp. 401 - 413. https://doi.org/10.1111/bjc.12110
Are adolescents more vulnerable to the harmful effects of cannabis than adults? A placebo-controlled study in human males
Mokrysz, Claire, Freeman, Tom P., Korkki, S., Griffiths, K. and Curran, Helen V.. (2016). Are adolescents more vulnerable to the harmful effects of cannabis than adults? A placebo-controlled study in human males. Translational Psychiatry. 6(11), pp. 1 - 10. https://doi.org/10.1038/tp.2016.225
LSD enhances the emotional response to music
Kaelen, M., Barrett, F. S., Roseman, L., Lorenz, R., Family, N., Bolstridge, M., Curran, Helen V., Feilding, A., Nutt, David J. and Carhart-Harris, R. L.. (2015). LSD enhances the emotional response to music. Psychopharmacology. 232(19), pp. 3607 - 3614. https://doi.org/10.1007/s00213-015-4014-y
Effects of immediate-release opioid on memory functioning: A randomized-controlled study in patients receiving sustained-release opioids
Kamboj, S. K., Conroy, L., Tookman, A., Carroll, E., Jones, L. and Curran, H.. (2014). Effects of immediate-release opioid on memory functioning: A randomized-controlled study in patients receiving sustained-release opioids. European Journal of Pain. 18(10), pp. 1376 - 1384. https://doi.org/10.1002/j.1532-2149.2014.498.x
Effects of ecstasy on cooperative behaviour and perception of trustworthiness: A naturalistic study
Stewart, L. H., Ferguson, B., Morgan, C. J. A., Swaboda, N., Jones, L., Fenton, R., Wall, M. B. and Curran, H.. (2014). Effects of ecstasy on cooperative behaviour and perception of trustworthiness: A naturalistic study. Journal of Psychopharmacology. 28(11), pp. 1001 - 1008. https://doi.org/10.1177/0269881114544775
Prospective memory impairment in long-term opiate users
Terrett, Gillian, McLennan, Skye, Henry, Julie, Biernacki, Kathryn, Mercuri, Kimberly, Curran, Valerie and Rendell, Peter. (2014). Prospective memory impairment in long-term opiate users. Psychopharmacology. 231(13), pp. 2623 - 2632. https://doi.org/10.1007/s00213-014-3432-6
Benzodiazepines: Risks and benefits. A reconsideration
Baldwin, David S., Aitchison, Katherine, Bateson, Alan, Curran, H. Valerie, Davies, Simon, Leonard, Brian, Nutt, David J., Stephens, David N. and Wilson, Sue. (2013). Benzodiazepines: Risks and benefits. A reconsideration. Journal of Psychopharmacology. 27(11), pp. 967 - 971. https://doi.org/10.1177/0269881113503509
Prospective memory and future event simulation in individuals with alcohol dependence
Griffiths, Alison, Hill, Robert, Morgan, Celia, Rendell, Peter Gregory, Karimi, Khashayar, Wanagaratne, Shamil and Curran, Valerie. (2012). Prospective memory and future event simulation in individuals with alcohol dependence. Addiction. 107(10), pp. 1809 - 1816. https://doi.org/10.1111/j.1360-0443.2012.03941.x
Neurocognitive function and schizophrenia-proneness in individuals dependent on ketamine, on high potency cannabis (skunk) or on cocaine
Morgan, Celia, Duffin, S., Hunt, S., Monaghan, L., Mason, O. and Curran, Helen. (2012). Neurocognitive function and schizophrenia-proneness in individuals dependent on ketamine, on high potency cannabis (skunk) or on cocaine. Pharmacopsychiatry. 45(7), pp. 269 - 274. https://doi.org/10.1055/s-0032-1306310