Cannabis and anxiety: a critical review of the evidence José Alexandre Crippa, Antonio Waldo Zuardi, Rocio Martin-Santos, Sagnik Bhattacharyya, Zerrin Atakan, Philip McGuire and Paolo Fusar-Poli Human Psychopharmacology Clinical and Experimental, 2009, 24, 515-523. Background : Anxiety reactions and panic attacks are the acute symptoms most frequently associated with cannabis use. Understanding the relationship between cannabis and anxiety may clarify the mechanism of action of cannabis and the pathophysiology of anxiety. Aims of the present study were to review the nature of the relationship between cannabis use and anxiety, as well as the possible clinical, diagnostic and causal implications. Method : Systematic review of the [...]
Lire la suiteAge-related differences in the impact of cannabis use on the brain and cognition : a systematic review Claire Gorey, · Lauren Kuhns, · Eleni Smaragdi, · Emese Kroon, · Janna Cousijn European Archives of Psychiatry and Clinical Neuroscience, 2019 https://doi.org/10.1007/s00406-019-00981-7 Abstract The impact of cannabis on the adolescent compared to adult brain is of interest to researchers and society alike. From a theoretical perspective, adolescence represents a period of both risk and resilience to the harms of cannabis use and cannabis use disorders. The aim of this systematic review is to provide a critical examination of the moderating role of age on the relationship between [...]
Lire la suiteCannabidiol inhibits priming-induced reinstatement of methamphetamine in REM sleep deprived rats Saeideh Karimi-Haghighi, Abbas Haghparast Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran Progress in Neuropsychopharmacology & Biological Psychiatry, 2017. http://dx.doi.org/10.1016/j.pnpbp.2017.08.022 A B S T R A C T Methamphetamine (METH) is a widely abused and a severely addictive psychostimulant. Relapse is the main cause of concern when treating addiction. It could manifest after a long period of abstinence. Previous studies showed that there is a strong connection between sleep impairment and relapse. Also, it has been reported that cannabidiol might be a potential treatment for drug craving and relapse. [...]
Lire la suiteCannabidiol treatment reduces the motivation to self-administer methamphetamine and methamphetamine-primed relapse in rats Gracie L. Hay, Sarah J. Baracz, Nicholas A. Everett, Jessica Roberts, Priscila A. Costa, Jonathon C. Arnold, Iain S. McGregor and Jennifer L. Cornish Journal of Psychopharmacology, 2018, 32, (12), 1369-1378. DOI : 10.1177/0269881118799954 , journals.sagepub.com/home/jop Abstract Background : Methamphetamine is an addictive stimulant that can cause many adverse physical, psychological and psychosocial effects. Preliminary evidence shows cannabidiol, a non-intoxicating constituent of the cannabis plant, may have efficacy in treating opioid and nicotine dependence. However, no study has yet examined whether cannabidiol treatment might impact on methamphetamine addiction. Aims : The current study [...]
Lire la suiteCannabidiol attenuates deficits of visuospatial associative memory induced by D9tetrahydrocannabinol M. Jerry Wright Jr, Sophia A. Vandewater and Michael A. Taffe Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA British Journal of Pharmacology, 2013, 170, 1365–1373 BACKGROUND AND PURPOSE Recent human studies suggest that recreational cannabis strains that are relatively high in cannabidiol (CBD) content produce less cognitive impairment than do strains with negligible CBD and similar D9tetrahydrocannabinol (THC) content. Self-selection in such studies means it is impossible to rule out additional variables which may determine both cannabis strain selection and basal cognitive performance level. Controlled laboratory studies can [...]
Lire la suiteNeurobiology of Disease : Daily Marijuana Use Is Not Associated with Brain Morphometric Measures in Adolescents or Adults Barbara J. Weiland, Rachel E. Thayer, Brendan E. Depue, Amithrupa Sabbineni, Angela D. Bryan, and Kent E. Hutchison Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, Colorado 80309, Department of Psychological and Brain Sciences, University of Louisville, Louisville, Kentucky 40292 The Journal of Neuroscience, 2015, 35, 4, 1505–1512. DOI : 10.1523/JNEUROSCI.2946-14.2015 Abstract : Recent research has suggested that marijuana use is associated with volumetric and shape differences in subcortical structures, including the nucleus accumbens and amygdala, in a dose-dependent fashion. Replication of such results in well controlled [...]
Lire la suiteHow effective and safe is medical cannabis as a treatment of mental disorders ? A systematic review Eva Hoch,· Dominik Niemann, · Rupert von Keller, · Miriam Schneider, · Chris M. Friemel, · Ulrich W. Preuss ,·Alkomiet Hasan, · Oliver Pogarell European Archives of Psychiatry and Clinical Neuroscience, 2019 Doi.org/10.1007/s00406-019-00984-4 Abstract : We conducted a review of systematic reviews (SRs) and randomized-controlled trials (RCTs) to analyze efficacy and safety of cannabis-based medication in patients with mental disorders. Five data bases were systematically searched (2006—August 2018); 4 SRs (of 11 RCTs) and 14 RCTs (1629 participants) were included. Diagnoses were: dementia, cannabis and opioid dependence, psychoses/schizophrenia, general [...]
Lire la suiteCannabidiol inhibits THC-elicited paranoid symptoms and hippocampal-dependent memory impairment Englund A, Morrison PD, Nottage J, Hague D, Kane F, Bonaccorso S, Stone JM, Reichenberg A, Brenneisen R, Holt D, Feilding A, Walker L, Murray RM, Kapur S. Beckley Foundation, 2017. https://beckleyfoundation.org/resource/cannabidiol-inhibits-thc-elicited-paranoid-symptoms-and-hippocampal-dependent-memory-impairment/ Abstract Community-based studies suggest that cannabis products that are high in delta9-tetrahydrocannabinol (THC) but low in cannabidiol (CBD) are particularly hazardous for mental health. Laboratory-based studies are ideal for clarifying this issue because THC and CBD can be administered in pure form, under controlled conditions. In a between-subjects design, we tested the hypothesis that pre-treatment with CBD inhibited THC-elicited psychosis and cognitive impairment. Healthy participants were [...]
Lire la suitePills to Pot : Observational Analyses of Cannabis Substitution Among Medical Cannabis Users With Chronic Pain Kevin F. Boehnke, J. Ryan Scott, Evangelos Litinas, Suzanne Sisley, David A. Williams, Daniel J. Clauw The Journal of Pain, 2019 https://www.jpain.org/article/S1526-5900(18)30735-1/fulltext DOI : https://doi.org/10.1016/j.jpain.2019.01.010 Highlights •Medical cannabis users reported substituting cannabis for pain medications. •User rationale for substitution was fewer side effects and better pain management. •Most users reported improved pain and health since using cannabis. •Intentions behind and duration of cannabis use affected substitution behavior. •Unlike previous studies, >50% of participants were women and adults >50 years old. Abstract Chronic pain is common, costly, and challenging to treat. Many [...]
Lire la suiteAdenosine A2A-Cannabinoid CB1 Receptor Heteromers in the Hippocampus : Cannabidiol Blunts Δ9Tetrahydrocannabinol-Induced Cognitive Impairment Ester Aso, Víctor Fernández-Dueñas, Marc López-Cano, Jaume Taura, Masahiko Watanabe, Isidre Ferrer, Rafael Luján, Francisco Ciruela, Ester Aso Molecular Neurobiology, First Online: 04 January 2019, pp 1-10. C : Springer Nature Switzerland AG Abstract : At present, clinical interest in the plant-derived cannabinoid compound cannabidiol (CBD) is rising exponentially, since it displays multiple therapeutic properties. In addition, CBD can counteract the undesirable effects of the psychoactive cannabinoid Δ9-tetrahydrocannabinol (Δ9-THC) that hinder clinical development of cannabis-based therapies. Despite this attention, the mechanisms of CBD action and its interaction with Δ9-THC are still not completely elucidated. Here, by combining in vivo [...]
Lire la suite