Cannabidiol as a Potential New Type of an Antipsychotic. A Critical Review of the Evidence Cathrin Rohleder, Juliane K. Müller, Bettina Lange and F. M. Leweke Frontiers in Pharmacology, 2016, Volume 7, Article 422. doi: 10.3389/fphar.2016.00422 There is urgent need for the development of mechanistically different and less side-effect prone antipsychotic compounds. The endocannabinoid system has been suggested to represent a potential new target in this indication. While the chronic use of cannabis itself has been considered a risk factor contributing to the development of schizophrenia, triggered by the phytocannabinoid delta-9-tetra-hydro-cannabinol (19-THC), cannabidiol, the second most important phytocannabinoid, appears to have no psychotomimetic potential. [...]
Lire la suiteCannabidiol : a hope to treat non‑motor symptoms of Parkinson’s disease patients Sidra Saleem & Arsalan Anwar European Archives of Psychiatry and Clinical Neuroscience, 2019 https://doi.org/10.1007/s00406-019-01023-y We read an article, “Is Cannabidiol the ideal drug to treat non-motor Parkinson’s disease symptoms” by Cripp [1], the novel discussion and explanation of the role of cannabidiol (CBD) in Parkinson’s disease (PD) inspired us to write our feedback. We would like to share our views on the role of CBD in the prevention and treatment of movement disorders. CBD is one of the main components of Cannabis sativa investigated previously for its neuroprotective effects. Its mechanism of action [...]
Lire la suiteCannabidiol reduces seizures and associated behavioral comorbidities in a range of animal seizure and epilepsy models Pabitra Hriday Patra, Melissa Barker-Haliski, H. Steve White, Benjamin J. Whalley, Sarah Glyn, Haramrit Sandhu, Nicholas Jones, Michael Bazelot, Claire M. Williams, Alister James McNeish Epilepsia, 2018, 1–12. DOI: 10.1111/epi.14629 Summary Objective : Epilepsy is a progressive neurological disease characterized by recurrent seizures and behavioral comorbidities. We investigated the antiseizure effect of cannabidiol (CBD) in a battery of acute seizure models. Additionally, we defined the disease‐modifying potential of chronic oral administration of CBD on associated comorbidities in the reduced intensity status epilepticus–spontaneous recurrent seizures (RISE‐SRS) model of temporal lobe [...]
Lire la suiteHow do hallucinogens work on the brain? Robin Carhart-Harris, Mendel Kaelen and David Nutt The Psychologist, 2014, 27, 9, 662-665 What do we know about how hallucinogens work on the brain to produce their characteristic subjective effects? This question can be approached from a number of different levels. At the lowest functionally relevant level, how do the hallucinogenic compounds themselves interact with a certain neurotransmitter receptor to alter neuronal activity? Then at the neuronal population level, how does a drug-induced change in neuronal firing interact with the integrated oscillatory activity of large populations of neurons? Finally, how does this all play out at [...]
Lire la suiteSpectral signatures of serotonergic psychedelics and glutamatergic dissociatives Carla Pallavicini, Martina G. Vilas, Mirta Villarreal, Federico Zamberlan, Suresh Muthukumaraswamy, David Nutt, Robin Carhart-Harris, Enzo Tagliazucchi NeuroImage, 2019 https://doi.org/10.1016/j.neuroimage.2019.06.053 Abstract Classic serotonergic psychedelics are remarkable for their capacity to induce reversible alterations in consciousness of the self and the surroundings, mediated by agonism at serotonin 5-HT2A receptors. The subjective effects elicited by dissociative drugs acting as N-methyl-D-aspartate (NMDA) antagonists (e.g. ketamine and phencyclidine) overlap in certain domains with those of serotonergic psychedelics, suggesting some potential similarities in the brain activity patterns induced by both classes of drugs, despite different pharmacological mechanisms of action. We investigated source-localized [...]
Lire la suiteCANNABIS PEER REVIEW 1964-2016 Over 650 Peer Reviewed Reports & Studies On Cannabis A Free Jeff Prager Publication Health benefits, cancer fighting qualities and many other medicinal advantages can be attributed to the Cannabis Plant. Likewise, diseases and disorders are also related to smoking, vaping and ingesting components of the Cannabis Plant. Cannabis users should be aware and well informed regarding both the positive effects and the negative consequences of regular Cannabis use and this eBook accomplishes that goal by employing over 400 current peer reviewed reports and studies—their findings— with active hyper links to each report. A Free Jeff Prager No-Copyright Publication for [...]
Lire la suiteThe Divergent Effects of CDPPB and Cannabidiol on Fear Extinction and Anxiety in a Predator Scent Stress Model of PTSD in Rats John Shallcross, Peter Hámor, Allison R. Bechard, Madison Romano, Lori Knackstedt and Marek Schwendt Frontiers in Behavioral Neuroscience, May 2019 | Volume 13 | Article 91 ORIGINAL RESEARCH published: 10 May 2019 doi: 10.3389/fnbeh.2019.00091 Post-traumatic stress disorder (PTSD) currently has no FDA-approved treatments that reduce symptoms in the majority of patients. The ability to extinguish fear memory associations is impaired in PTSD individuals. As such, the development of extinction-enhancing pharmacological agents to be used in combination with exposure therapies may benefit the treatment of [...]
Lire la suiteFamilial abnormalities of endocannabinoid signaling in schizophrenia Dagmar Koethe, Franziska Pahlisch, Martin Hellmich , Cathrin Rohleder , Juliane K. Mueller, Andreas Meyer-Lindenberg , E. Fuller Torrey, Daniele Piomelli and F. Markus Leweke, THE WORLD JOURNAL OF BIOLOGICAL PSYCHIATRY, 2018 https://doi.org/10.1080/15622975.2018.1449966 ABSTRACT Objectives : Epidemiological and experimental evidence suggests that the endocannabinoid system plays a pathophysiological role in schizophrenia. This is reflected by elevated cerebrospinal levels of the endocannabinoid anandamide in schizophrenia and its initial prodromal states. Methods : We analyzed plasma concentrations of anandamide, 2-arachidonoyl-sn-glycerol, palmitoylethanolamide and oleoylethanolamide from 25 twin pairs discordant for schizophrenia, six discordant for bipolar disorder and eight healthy twin pairs to [...]
Lire la suiteBrain Imaging Studies on the Cognitive, Pharmacological and Neurobiological Effects of Cannabis in Humans : Evidence from Studies of Adult Users. Aviv Weinstein, Abigail Livny, Abraham Weizman. Current Pharmaceutical Design, 2016, 22, 42, 6366-6379. doi: 10.2174/1381612822666160822151323. PMID : 27549374 Abstract Cannabis is the most widely used illicit drug worldwide. Regular cannabis use has been associated with a range of acute and chronic mental health problems, such as anxiety, depression, psychotic symptoms and neurocognitive impairments and their neural mechanisms need to be examined. This review summarizes and critically evaluates brain-imaging studies of cannabis in recreational and regular cannabis users between January 2000 and January 2016. The [...]
Lire la suiteAwareness of Emotional Expressions in Cannabis Users : An Event-Related Potential Study Robert D. Torrence, Donald C. Rojas and Lucy J. Troup Frontiers in Psychology, February 2019 | Volume 10 | Article 69 ORIGINAL RESEARCH doi: 10.3389/fpsyg.2019.00069 Abstract Cannabis use has been associated with anxiogenic effects when used in low frequency for a short duration, but cannabis can also have anxiogenic effects when used heavily for a long duration. Animal studies have indicated the neurobiological mechanisms related to cannabis and anxiety; however, research has been limited on the related neurocognitive mechanisms. Previous research has indicated that cannabis use is associated with alterations in event-related potentials (ERPs). [...]
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