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Novel behavioral assays of spontaneous and precipitated THC withdrawal in mice.

Kristen R Trexler, Sara R Nass, Molly S Crowe, Joshua D Gross, Margaret S Jones, Austin W McKitrick, David P Siderovski, Steven G Kinsey

Drug and Alcohol Dependence October 1, 2018 DOI: 10.1016/j.drugalcdep.2018.05.029 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Preclinical animal study Peer reviewed
Population C57BL/6J mice
Interventions JWH-018 rimonabant JZL184
Dose THC 1, 10 or 50 mg/kg, s.c.; JWH-018 1 mg/kg, s.c.; rimonabant 3 mg/kg, i.p.
Duration 6 days of repeated administration; spontaneous withdrawal assessed after 24-48 h abstinence
Measures plasma corticosterone, marble burying test, tail suspension test, somatic withdrawal signs
Topics Cannabis
Keywords Cannabinoid withdrawal Cannabis use disorder Drug dependence Stress
Key points Precipitated withdrawal from THC or JWH-018 increased plasma corticosterone, suppressed marble burying, increased struggling in the tail suspension test, and elicited somatic withdrawal behaviors. JZL184 attenuated somatic precipitated withdrawal but not marble burying or struggling. Spontaneous withdrawal after 24-48 hours induced paw tremors, head twitches, and increased struggling, which JZL184 or THC attenuated. The authors argue that THC withdrawal is multifaceted, both eliciting and suppressing behaviors in these tests.

Abstract

A subset of cannabis users develop some degree of Cannabis Use Disorder (CUD). Although behavioral therapy has some success in treating CUD, many users relapse, often citing altered sleep, mood, and irritability. Preclinical animal tests of cannabinoid withdrawal focus primarily on somatic-related behaviors precipitated by a cannabinoid receptor antagonist. The goal of the present study was to develop novel cannabinoid withdrawal assays that are either antagonist-precipitated or spontaneously induced by abstinence. C57BL/6 J mice were repeatedly administered the phytocannabinoid Δ9-tetrahydrocannabinol (THC; 1, 10 or 50 mg/kg, s.c.), the synthetic cannabinoid receptor agonist JWH-018 (1 mg/kg, s.c.), or vehicle (1:1:18 parts ethanol:Kolliphor EL:saline, s.c.) for 6 days. Withdrawal was precipitated with the cannabinoid receptor inverse agonist rimonabant (3 mg/kg, i.p.) or elicited via abstinence (i.e., spontaneous withdrawal), and putative stress-related behavior was scored. Classic somatic signs of cannabinoid withdrawal were also quantified. Precipitated THC withdrawal significantly increased plasma corticosterone. Precipitated withdrawal from either THC or JWH-018 suppressed marble burying, increased struggling in the tail suspension test, and elicited somatic withdrawal behaviors. The monoacylglycerol lipase inhibitor JZL184 attenuated somatic precipitated withdrawal but had no effect on marble burying or struggling. Spontaneous THC or JWH-018 withdrawal-induced paw tremors, head twitches, and struggled in the tail suspension test after 24-48 h abstinence. JZL184 or THC attenuated these spontaneous withdrawal-induced behaviors. Outcomes from tail suspension and marble burying tests reveal that THC withdrawal is multifaceted, eliciting and suppressing behaviors in these tests, in addition to inducing well-documented somatic signs of withdrawal.

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Study Year Design Participants
Cognitive Impairment Induced by Delta9-tetrahydrocannabinol Occurs through Heteromers between Cannabinoid CB1 and Serotonin 5-HT2A Receptors Mice 2015 Preclinical study
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Long-term hippocampal interneuronopathy drives sex-dimorphic spatial memory impairment induced by prenatal THC exposure Mice prenatally exposed to THC, including conditional CB1R knockout mice 2020 Animal experimental study
Chronic cannabis promotes pro-hallucinogenic signaling of 5-HT2A receptors through Akt/mTOR pathway Mice exposed to chronic THC early in life 2018 Animal experimental study
Effects of cannabinoid drugs on the deficit of prepulse inhibition of startle in an animal model of schizophrenia: the SHR strain Spontaneously hypertensive rats (SHRs) and Wistar rats 2014 Animal experimental study

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