Cannabinoid Modulation of Functional Connectivity within Regions Processing Attentional Salience Sagnik Bhattacharyya, Irina Falkenberg, Rocio Martin-Santos, Zerrin Atakan1, Jose A Crippa, Vincent Giampietro, Mick Brammer and Philip McGuire Neuropsychopharmacology, 2015, 40, 1343–1352 2015 American College of Neuropsychopharmacology. All rights reserved 0893-133X/15 www.neuropsychopharmacology.org doi:10.1038/npp.2014.258 Abstract There is now considerable evidence to support the hypothesis that psychotic symptoms are the result of abnormal salience attribution, and that the attribution of salience is largely mediated through the prefrontal cortex, the striatum, and the hippocampus. Although these areas show differential activation under the influence of delta-9-tetrahydrocannabinol (delta-9-THC) and cannabidiol (CBD), the two major derivatives of cannabis sativa, little is known about [...]
Lire la suiteThe Role of Cannabinoids in Neuroanatomic Alterations in Cannabis Users Valentina Lorenzetti, Nadia Solowij, and Murat Yücel Biological Psychiatry, 2016, 79:e17-e31 http://dx.doi.org/10.1016/j.biopsych.2015.11.013 ABSTRACT The past few decades have seen a marked change in the composition of commonly smoked cannabis. These changes primarily involve an increase of the psychoactive compound Δ9-tetrahydrocannabinol (THC) and a decrease of the potentially therapeutic compound cannabidiol (CBD). This altered composition of cannabis may be linked to persistent neuroanatomic alterations typically seen in regular cannabis users. In this review, we summarize recent findings from human structural neuroimaging investigations. We examine whether neuroanatomic alterations are 1) consistently observed in samples of regular cannabis [...]
Lire la suiteCannabis-induced altered states of consciousness are associated with specific dynamic brain connectivity states Zaytseva Y; Horáček J; Hlinka J; Fajnerová I; Androvičová R; Tintěra J; Salvi V; Balíková M; Hložek T; Španiel F; Páleníček T Journal of Psychopharmacology, 2019, 33, 7, 811-821 Research Article doi: 10.1177/0269881119849814. Abstract : Background : Cannabis, and specifically one of its active compounds delta-9-tetrahydrocannabinol in recreational doses, has a variety of effects on cognitive processes. Most studies employ resting state functional magnetic resonance imaging techniques to assess the stationary effects of cannabis and to-date one report addressed the impact of delta-9-tetrahydrocannabinol on the dynamics of whole-brain functional connectivity. Methods : Using a [...]
Lire la suiteMarijuana and the Cannabinoids Edited by Mahmoud A. ElSohly, PhD, Humana Press, Totowa, New Jersey, USA, 2007 www.humanapress.com 1. Cannabinoids. I. ElSohly, Mahmoud A. II. Series. [DNLM: 1. Cannabinoids. 2. Cannabis. QV 77.7 M33515 2006] QP801.C27M355 2006 615'.7827--dc22 333 pages, Preface Although primarily used today as one of the most prevalent illicit leisure drugs, the use of Cannabis sativa L., commonly referred to as marijuana, for medicinal purposes has been reported for more than 5000 years. Marijuana use has been shown to create numerous health problems, and, consequently, the expanding use beyond medical purposes into recreational use (abuse) resulted in control of the drug through international treaties. Much research has been [...]
Lire la suiteMarijuana Compounds : A Non-Conventional Therapeutic Approach to Epilepsy in Children Mariana Babayeva, Malka Fuzailov, Paulina Rozenfeld and Paramita Basu Journal of Addiction and Neuropharmacology, 2014, 1, 1, 002 Abstract Epilepsy in children is a complex disease, with a variety of distinct syndromes and many alternative treatment options. Even with a plethora of available treatment options, childhood epilepsies are commonly associated with seizures that are resistant to existing treatment methods. Treatment of pediatric epilepsy is challenging and requires more effective therapy to avoid short-term and longterm neurological disorders. Marijuana has been used to treat disease since ancient times. Marijuana ingredients Cannabidiol (CBD) and D9- Tetrahydrocannabinol (THC) [...]
Lire la suiteDream over life : Psychedelic terphenyl derivative induce hallucination via cannabinoid receptor 1 F.A. Fauzi, M.S. Goh, S.A.T.T. Johari, F. Hashim, M.F.N. Hassim The International Fundamentum Sciences Symposium 2018 IOP Publishing IOP Conf. Series: Materials Science and Engineering 440 (2018) 012045 doi:10.1088/1757-899X/440/1/012045 Abstract. For ages, natural psychedelic resources have been used by ancient tribes for religious inspiration. In modern medicine, these compounds were prescribed to relieve severe distress and depression on cancer patients. Despite medical benefit, abuse of these compounds have become prevalent in our modern society. These compounds usually interacted withcannabinoid receptor 1 (CNR1) on neuron cell causing hallucination, and on other cell-types. In this [...]
Lire la suiteEpigenetic Effects of Cannabis Exposure Henrietta Szutorisz and Yasmin L. Hurd Biological Psychiatry, 2016, 79, 7, 586–594. doi:10.1016/j.biopsych.2015.09.014. Abstract The past decade has witnessed a number of societal and political changes that have raised critical questions about the long-term impact of marijuana (Cannabis sativa) that are especially important given the prevalence of its abuse and that potential long-term effects still largely lack scientific data. Disturbances of the epigenome have generally been hypothesized as the molecular machinery underlying the persistent, often tissue-specific transcriptional and behavioral effects of cannabinoids that have been observed within one’s lifetime and even into the subsequent generation. Here, we provide an overview [...]
Lire la suiteThe Endocannabinoid System and its Modulation by Phytocannabinoids Vincenzo Di Marzo & Fabiana Piscitelli Neurotherapeutics, 2015, 12, 692–698 DOI 10.1007/s13311-015-0374-6 Abstract : The endocannabinoid system is currently defined as the ensemble of the two 7-transmembrane-domain and G protein-coupled receptors for Δ9-tetrahydrocannabinol (but not for most other plant cannabinoids or phytocannabinoids)—cannabinoid receptor type-1 (CB1R) and cannabinoid receptor type-2 (CB2R); their two most studied endogenous ligands, the “endocannabinoids” N-arachidonoyl-ethanolamine (anandamide) and 2-arachidonoylglycerol (2-AG); and the enzymes responsible for endocannabinoid metabolism. However, anandamide and 2-AG, and also the phytocannabinoids, have more molecular targets than just CB1R and CB2R. Furthermore, the endocannabinoids, like most other lipid mediators, have more [...]
Lire la suiteIntroduction to Recent Advances in Cannabinoid Research Robert B. Laprairie and Will Costain © 2016 The Author(s). Licensee InTechOpen. This chapter is distributed under the terms of the Creative Commons; Attribution License (http://creativecommons.org/licenses/by/3.0), Abstract On October 17, 2018, Canada became the first G20 nation to legalize the use of Cannabis sativa for both medicinal and recreational purposes. This change in legislation and end of prohibition are indicative of a larger global movement to understand Cannabis—and the bioactive chemicals present within Cannabis known as the cannabinoids—for its potential biomedical uses, harms, and economic values. Currently, interest in Cannabis and cannabinoid research is surging as the many [...]
Lire la suitePsychedelics Promote Structural and Functional Neural Plasticity Astral X Neural Plasticity, Alexandra C. Greb, Lindsay P. Cameron, Jonathan M. Wong, Eden V. Barragan, Paige C. Wilson, Kyle F. Burbach, Sina Soltanzadeh Zarandi, Alexander Sood, Michael R. Padd, Whitney C. Duim, Megan Y. Dennis, A. Kimberley McAllister, Kassandra M. Ori-McKenney, John A. Gray and David E. Olson Experiment Findings, February 2018 https://www.researchgate.net/publication/331396378 SUMMARY Atrophy of neurons in the prefrontal cortex (PFC) plays a key role in the pathophysiology of depression and related disorders. The ability to promote both structural and functional plasticity in the PFC has been hypothesized to underlie the fast-acting antidepressant properties of the [...]
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