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Opposite effects of δ-9-tetrahydrocannabinol and cannabidiol on human brain function and psychopathology

Sagnik Bhattacharyya*, Paul D. Morrison, Paolo Fusar-Poli, Rocio Martin-Santos, Stefan Borgwardt, Toby Winton-Brown, Chiara Nosarti, Colin M. O'Carroll, Marc Seal, Paul Allen, Mitul A. Mehta, James M. Stone, Nigel Tunstall, Vincent Giampietro, Shitij Kapur, Robin M. Murray, Antonio W. Zuardi, José A. Crippa, Zerrin Atakan, Philip K. McGuire

*Corresponding author for this work

Abstract

Δ-9-tetrahydrocannabinol (Δ-9-THC) and Cannabidiol (CBD), the two main ingredients of the Cannabis sativa plant have distinct symptomatic and behavioral effects. We used functional magnetic resonance imaging (fMRI) in healthy volunteers to examine whether Δ-9-THC and CBD had opposite effects on regional brain function. We then assessed whether pretreatment with CBD can prevent the acute psychotic symptoms induced by Δ-9-THC. Fifteen healthy men with minimal earlier exposure to cannabis were scanned while performing a verbal memory task, a response inhibition task, a sensory processing task, and when viewing fearful faces. Subjects were scanned on three occasions, each preceded by oral administration of Δ-9-THC, CBD, or placebo. BOLD responses were measured using fMRI. In a second experiment, six healthy volunteers were administered Δ-9-THC intravenously on two occasions, after placebo or CBD pretreatment to examine whether CBD could block the psychotic symptoms induced by Δ-9-THC. Δ-9-THC and CBD had opposite effects on activation relative to placebo in the striatum during verbal recall, in the hippocampus during the response inhibition task, in the amygdala when subjects viewed fearful faces, in the superior temporal cortex when subjects listened to speech, and in the occipital cortex during visual processing. In the second experiment, pretreatment with CBD prevented the acute induction of psychotic symptoms by Δ-9-tetrahydrocannabinol. Δ-9-THC and CBD can have opposite effects on regional brain function, which may underlie their different symptomatic and behavioral effects, and CBD's ability to block the psychotogenic effects of Δ-9-THC.

Original languageEnglish
JournalNeuropsychopharmacology
Volume35
Issue number3
Pages (from-to)764-774
Number of pages11
ISSN0893-133X
DOIs
Publication statusPublished - 02.2010

Funding

This work was supported by a grant from the Psychiatry Research Trust, UK. Sagnik Bhattacharyya is supported by a Joint MRC/Priory Clinical research training fellowship from the Medical Research Council, UK. Paul Morrison is supported by the Medical Research Council, UK, the Biomedial Research Centre and the Beckley Foundation. Jose A Crippa is the recipient of a Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brazil) Productivity fellowship. We thank Glynis Ivin for help with the blinding procedure, storage and dispensing of the drugs. We thank Dr Katya Rubia and Dr Simon Surguladze for allowing us to use the fearful faces and the response inhibition paradigms, respectively.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being
  2. SDG 10 - Reduced Inequalities
    SDG 10 Reduced Inequalities

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