Cannabis and mental illness : a review Darby J. E. Lowe · Julia D. Sasiadek · Alexandria S. Coles · Tony P. George European Archives of Psychiatry and Clinical Neuroscience, 2018, 1-14. Doi : 10.1007/s00406-018-0970-7 Abstract With the increasing push to legalize cannabis in Western nations, there is a need to gage the potential impact of this policy change on vulnerable populations, such as those with mental illness, including schizophrenia, mood, and anxiety disorders. This is particularly important as there are strong motives in these individuals to seek short-term reward (e.g., “getting high”). Nonetheless, data to support the beneficial effects of cannabis use in psychiatric [...]
Lire la suiteCannabis and Depression Daniel Feingold, Aviv Weinstein Advances in Experimental medicine and Biology, 2021, 1264, 67-80. In book : "Cannabinoids and Neuropsychiatric Disorders", Aviv Weinstein 's Lab Doi : 10.1007/978-3-030-57369-0_5 Abstract There is a growing body of evidence pointing to the co-occurrence of cannabis use and depression. There is also some evidence that the use of cannabis may lead to the onset of depression; however, strong evidence points to the inverse association; i.e. that depression may lead to the onset or increase in cannabis use frequency. Observational and epidemiological studies have not indicated a positive long-term effect of cannabis use on the course and outcome of [...]
Lire la suiteEffectiveness of Psilocybin on Depression : A Qualitative Study Redhwan Ahmed Al-Naggar, Hisham Alshaikhli, Gwen Erlam Electronic Journal of General Medicine, 2021, 18, (3), em296. doi : 10.29333/ejgm/10862 ABSTRACT Introduction : Psilocybin mushroom use is well documented in spiritual and religious ceremonies globally. This drug is now the most popular in Europe and the USA. Objective : The objective of this study is to explore the experiences and effects of psilocybin on patients with depression and anxiety. Method : A qualitative study was conducted interviewing ten participants currently taking psilocybin while experiencing depression and/or anxiety. Ethical approval was obtained from the University ethics committee. Participants were recruited [...]
Lire la suiteCannabinoid Addiction: Behavioral Models and Neural Correlates Rafael Maldonado and Fernando Rodriguez de Fonseca The Journal of Neuroscience, 2002, 22, (9), 3326–3331. Abstract The use of cannabis sativa preparations as recreational drugs can be traced back to the earliest civilizations. However, animal models of cannabinoid addiction allowing the exploration of neural correlates of cannabinoid abuse have been developed only recently. We review these models and the role of the CB1 cannabinoid receptor, the main target of natural cannabinoids, and its interaction with opioid and dopamine transmission in reward circuits. Extensive reviews on the molecular basis of cannabinoid action are available elsewhere (Piomelli et al., [...]
Lire la suiteCannabinoids and the endocannabinoid system in reward processing and addiction: from mechanisms to interventions Rainer Spanagel, PhD Dialogues in Clinical Neuroscience, 2020, 22, (3), 241-250. doi : 10.31887/DCNS.2020.22.3/rspanagel The last decades have seen a major gain in understanding the action of cannabinoids and the endocannabinoid system in reward processing and the development of addictive behavior. Cannabis-derived psychoactive compounds such as Δ9-tetrahydrocannabinol and synthetic cannabinoids directly interact with the reward system and thereby have addictive properties. Cannabinoids induce their reinforcing properties by an increase in tonic dopamine levels through a cannabinoid type 1 (CB1) receptor–dependent mechanism within the ventral tegmental area. Cues that are conditioned [...]
Lire la suiteCannabidiol as a treatment for craving and relapse inindividuals with cocaine use disorder: a randomized placebo-controlled trial Violaine Mongeau-Pérusse, Suzanne Brissette, Julie Bruneau, Patricia Conrod, Simon Dubreucq, Guillaume Gazil, EmmanuelStip & DidierJutras-Aswad Addiction, 2021, 116, (9), 1-12. Doi : 10.1111/add.15417 ABSTRACT Background and Aims : Cocaine use disorder (CUD) is a significant public health concern for which no efficacious phar-macologicalinterventionsare available. Cannabidiol (CBD) has attracted considerable interest as a promisingtreatmentforaddiction. This study tested CBD efficacy for reducing craving and preventing relapse in people with CUD.DesignSingle-site double-blind randomized controlled superiority trial comparing CBD with placebo. Setting and Participants : Centre Hospitalier de l’Université de Montréal, Canada. Seventy-eight [...]
Lire la suiteCB2 Receptor Involvement in the Treatment of Substance Use Disorders Francisco Navarrete, María S. García-Gutiérrez, Ani Gasparyan, Daniela Navarro and Jorge Manzanares Biomolecules, 2021, 11, 1556, 1-18. Doi : 10.3390/biom11111556 Abstract The pharmacological modulation of the cannabinoid receptor 2 (CB2r) has emerged as a promising potential therapeutic option in addiction. The purpose of this review was to determine the functional involvement of CB2r in the effects produced by drugs of abuse at the central nervous system (CNS) level by assessing evidence from preclinical and clinical studies. In rodents, several reports suggest the functional involvement of CB2r in the effects produced by drugs of abuse such [...]
Lire la suiteInvolvement of the endocannabinoid system in drug addiction, Rafael Maldonado, Olga Valverde and Fernando Berrendero Trends in Neurosciences, 2006, 29, (4), 225-232. Doi : 10.1016/j.tins.2006.01.008 Recent studies have shown that the endocannabinoid system is involved in the common neurobiological mechanism underlying drug addiction. This system participates in the primary rewarding effects of cannabinoids, nicotine, alcohol and opioids, through the release of endocannabinoids in the ventral tegmental area. Endocannabinoids are also involved in the motivation to seek drugs by a dopamine-independent mechanism, demonstrated for psychostimulants and opioids. The endocannabinoid system also participates in the common mechanisms underlying relapse to drugseeking behaviour by mediating the motivational effects [...]
Lire la suiteLearning to Let Go : A Cognitive-Behavioral Model of How Psychedelic Therapy Promotes Acceptance Max Wolff, Ricarda Evens, Lea J. Mertens, Michael Koslowski, Felix Betzler, Gerhard Gründer and Henrik Jungaberle Frontiers in Psychiatry, February 2020 | Volume 11 | Article 5, 1-13. doi : 10.3389/fpsyt.2020.00005 The efficacy of psychedelic-assisted therapies for mental disorders has been attributed to the lasting change from experiential avoidance to acceptance that these treatments appear to facilitate. This article presents a conceptual model that specifies potential psychological mechanisms underlying such change, and that shows substantial parallels between psychedelic therapy and cognitive behavioral therapy: We propose that in the carefully controlled [...]
Lire la suiteNovel Treatment Approaches for Substance Use Disorders : Therapeutic Use of Psychedelics and the Role of Psychotherapy Michael Koslowski, Matthew W. Johnson, Gerhard Gründer, Felix Betzler Current Addiction Reports, 2021, 1-11. doi : 10.1007/s40429-021-00401-8 Abstract Purpose of Review : The use of psychedelics in a therapeutical setting has been reported for the treatment of various diagnoses in recent years. However, as psychedelic substances are still commonly known for their (illicit) recreational use, it may seem counterintuitive to use psychedelic therapy to treat substance use disorders. This review aims to discuss how psychedelics can promote and intensify psychotherapeutic key processes, in different approaches like psychodynamic and [...]
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