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Steven R Laviolette

11 papers in the library · 64 citations · publishing 2017-2025

Papers

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Adolescent female rats are resistant to the affective and cognitive impacts of Δ9-tetrahydrocannabinol exposure despite long-lasting molecular and neuronal disturbances in the hippocampal-hypothalamic network.

Psychopharmacology November 1, 2025 Marta De Felice, Hanna J Szkudlarek, Matthew J Jones et al.

RATIONALE: Chronic cannabis during adolescence is associated with long-lasting pathological outcomes, and these effects can be remarkably different between the sexes. Preclinical studies in rodents demonstrated that sustained exposure to Δ9-tetrahydrocannabinol (THC), induces sex-specific pathophysiological outcomes. Thus, while males exhibit higher vulnerability to schizophrenia-like...

The antioxidant N-acetylcysteine prevents cortical neuropathological phenotypes caused by adolescent Δ-9-tetrahydrocannabinol exposure in male rats.

Translational Psychiatry October 6, 2025 Hanna J Szkudlarek, Rajkamalpreet Singh Mann, Krystyna Wieczerzak et al. 1 citation

Clinical and pre-clinical evidence demonstrates that adolescent Δ-9-tetrahydrocannabinol (THC) exposure, the primary psychoactive component of cannabis, increases the risk of developing neuropsychiatric symptoms in later life. The medial prefrontal cortex (mPFC) serves as a pathophysiological nexus point underlying many cannabis-related pathophysiological outcomes. Nevertheless, the molecular...

Cannabis in Adolescence: Lasting Cognitive Alterations and Underlying Mechanisms.

Cannabis and Cannabinoid Research February 2023 Andrew F Scheyer, Steven R Laviolette, Anne-Laure Pelissier et al.

Cannabis consumption during adolescence is an area of particular concern, owing to changes in the social and political perception of the drug, and presents a scientific, medical, and economic challenge. Major social and economic interests continue to push toward cannabis legalization as well as pharmaceutical development. As a result, shifting perceptions of both legal and illicit cannabis use...

Adolescent Δ-9-tetrahydrocannabinol exposure induces differential acute and long-term neuronal and molecular disturbances in dorsal vs. ventral hippocampal subregions.

Neuropsychopharmacology February 2023 Marta De Felice, Chaochao Chen, Mar Rodríguez-ruiz et al.

Chronic exposure to Δ-9-tetrahydrocannabinol (THC) during adolescence is associated with long-lasting cognitive impairments and enhanced susceptibility to anxiety and mood disorders. Previous evidence has revealed functional and anatomical dissociations between the posterior vs. anterior portions of the hippocampal formation, which are classified as the dorsal and ventral regions in rodents,...

Prenatal THC Exposure Induces Sex-Dependent Neuropsychiatric Endophenotypes in Offspring and Long-Term Disruptions in Fatty-Acid Signaling Pathways Directly in the Mesolimbic Circuitry.

eNeuro 2022 Mohammed H Sarikahya, Samantha Cousineau, Marta De Felice et al.

Despite increased prevalence of maternal cannabis use, little is understood regarding potential long-term effects of prenatal cannabis exposure (PCE) on neurodevelopmental outcomes. While neurodevelopmental cannabis exposure increases the risk of developing affective/mood disorders in adulthood, the precise neuropathophysiological mechanisms in male and female offspring are largely unknown....

DOI: 10.1523/eneuro.0253-22.2022 (opens in new tab) Full text (opens in new tab) Maldi ims Electrophysiology Lipidomics Mesolimbic system +2

THC and CBD produce divergent effects on perception and panic behaviours via distinct cortical molecular pathways.

Progress in Neuro-Psychopharmacology and Biological Psychiatry January 10, 2021 Hanna J Szkudlarek, Mar Rodríguez-ruiz, Roger Hudson et al.

Clinical and pre-clinical evidence demonstrates divergent psychotropic effects of THC vs. CBD. While THC can induce perceptual distortions and anxiogenic effects, CBD displays antipsychotic and anxiolytic properties. A key brain region responsible for regulation of cognition and affect, the medial prefrontal cortex (PFC), is strongly modulated by cannabinoids, suggesting that these dissociable...

DOI: 10.1016/j.pnpbp.2020.110029 (opens in new tab) Full text (opens in new tab) Cannabinoids Latent inhibition Panic Prefrontal cortex

Δ-9-Tetrahydrocannabinol and Cannabidiol produce dissociable effects on prefrontal cortical executive function and regulation of affective behaviors

Neuropsychopharmacology November 27, 2018 Hanna J Szkudlarek, Sagar Desai, Justine Renard et al. 63 citations

The use of cannabis for therapeutic and recreational purposes is growing exponentially. Nevertheless, substantial questions remain concerning the potential cognitive and affective side-effects associated with cannabis exposure. In particular, the effects of specific marijuana-derived phytocannabinoids on neural regions such as the prefrontal cortex (PFC) are of concern, given the role of the...

Delta-9-tetrahydrocannabinol potentiates fear memory salience through functional modulation of mesolimbic dopaminergic activity states.

European Journal of Neuroscience June 2018 Aurelie Fitoussi, Jordan Zunder, Huibing Tan et al.

Chronic or acute exposure to delta-9-tetrahydrocannabinol (THC), the main psychoactive compound in cannabis, has been associated with numerous neuropsychiatric side-effects, including dysregulation of emotional processing and associative memory formation. Clinical and preclinical evidence suggests that the effects of THC are due to the ability to modulate mesolimbic dopamine (DA) activity...

DOI: 10.1111/ejn.13951 (opens in new tab) Full text (opens in new tab) Delta-9-tetrahydrocannabinol Dopamine Electrophysiology Fear memory +1

Phytocannabinoids modulate emotional memory processing through interactions with the ventral hippocampus and mesolimbic dopamine system: implications for neuropsychiatric pathology.

Psychopharmacology February 2018 Roger Hudson, Walter J Rushlow, Steven R Laviolette

Growing clinical and preclinical evidence suggests a potential role for the phytocannabinoid cannabidiol (CBD) as a pharmacotherapy for various neuropsychiatric disorders. In contrast, delta-9-tetrahydrocannabinol (THC), the primary psychoactive component in cannabis, is associated with acute and neurodevelopmental propsychotic side effects through its interaction with central cannabinoid type...

Neuronal and molecular effects of cannabidiol on the mesolimbic dopamine system: Implications for novel schizophrenia treatments.

Neuroscience & Biobehavioral Reviews April 2017 Justine Renard, Christopher Norris, Walter J Rushlow et al.

Growing clinical and pre-clinical evidence points to a critical role for cannabidiol (CBD), the largest phytochemical component of cannabis, as a potential pharmacotherapy for various neuropsychiatric disorders. In contrast to delta-9-tetrahydrocannabinol (THC), which is associated with acute and neurodevelopmental pro-psychotic side-effects, CBD possesses no known psychoactive or...

Adolescent Cannabinoid Exposure Induces a Persistent Sub-Cortical Hyper-Dopaminergic State and Associated Molecular Adaptations in the Prefrontal Cortex.

Cerebral Cortex February 1, 2017 Justine Renard, Laura G Rosen, Michael Loureiro et al.

Considerable evidence suggests that adolescent exposure to delta-9-tetrahydrocanabinol (THC), the psychoactive component in marijuana, increases the risk of developing schizophrenia-related symptoms in early adulthood. In the present study, we used a combination of behavioral and molecular analyses with in vivo neuronal electrophysiology to compare the long-term effects of adolescent versus...