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Clifford M. Cassidy

3 papers in the library · publishing 2013-2025

Papers

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Investigating common risk factors in the comorbidity of cannabis use and psychosis

eScholarship@McGill 2013 Clifford M. Cassidy

Introduction. La comorbidité entre les troubles psychotiques et l'abus de substances est associée à une évolution négative. Pour mieux traiter l'abus de substance dans la psychose, il est nécessaire d'identifier les facteurs spécifiques qui augmentent la prévalence de consommation de substances dans cette population, particulièrement les aspects du trouble psychotique qui pourraient exacerber...

Converging effects of cannabis and psychosis on the dopamine system: A longitudinal neuromelanin-sensitive MRI study in cannabis use disorder and first episode schizophrenia

Jessica Ahrens, Sabrina D. Ford, Betsy Schaefer et al. preprint

Abstract Importance Despite evidence that individuals who use cannabis early in life are at elevated risk of psychosis and that the neurotransmitter dopamine has a role in both conditions, the mechanism linking the two conditions remains unclear. Objective To use neuromelanin-sensitive MRI (neuromelanin-MRI), a practical, proxy measure of dopamine function, to assess whether a common alteration...