Psilocybin – Summary of knowledge and new perspectives Filip Tylš, Tomáš Páleníček, Jiří Horáček European Neuropsychopharmacology, 2014, 24, 342–356 Doi : 10.1016/j.euroneuro.2013.12.006 Abstract Psilocybin, a psychoactive alkaloid contained in hallucinogenic mushrooms, is nowadays given a lot of attention in the scientific community as a research tool for modeling psychosis as well as due to its potential therapeutic effects. However, it is also a very popular and frequently abused natural hallucinogen. This review summarizes all the past and recent knowledge on psilocybin. It briefly deals with its history, discusses the pharmacokinetics and pharmacodynamics, and compares its action in humans and animals. It attempts to describe the mechanism of psychedelic effects [...]
Lire la suiteLysergic Acid Diethylamide and Psilocybin Revisited Mark A. Geyer Biological Psychiatry, 2015, Volume 78, Issue 8, 544-553 https://doi.org/10.1016/j.biopsych.2015.08.003 The past decade brought the beginnings of a renaissance in research on psychedelic drugs. Two articles in this issue of Biological Psychiatry signify that the resurrection of this long ignored topic has begun to mature and bear at least the promise of fruit. In the early 1970s, the onset of the “War on Drugs” brought with it a near-total hiatus in serious research on psychedelic drugs, especially in the United States. The resumption of credible work in this area has come from Switzerland, where many of [...]
Lire la suiteNeural correlates of the psychedelic state as determined by fMRI studies with psilocybine Robin L. Carhart-Harris, David Erritzoe, Tim Williams, James M. Stone, Laurence J. Reed, Alessandro Colasanti, Robin J. Tyacke, Robert Leech, Andrea L. Malizia, Kevin Murphy, Peter Hobden, John Evans, Amanda Feilding, Richard G. Wise, and David J. Nutt PNAS, Proceedings of the National Academy of Sciences of the USA, 2012, 109, (6), 2138-2143. doi:10.1073/pnas.1119598109 www.pnas.org/lookup/suppl/doi:10.1073/pnas.1119598109/-/DCSupplemental. Abstract Psychedelic drugs have a long history of use in healing ceremonies, but despite renewed interest in their therapeutic potential, we continue to know very little about howthey work in the brain. Here we used psilocybin, a classic [...]
Lire la suiteIbogaine : A review - Chapter 1 Kenneth R. Alper The Alkaloids. Chemistry and Biology, 2001, 56, 38 pp DOI: 10.1016/S0099-9598(01)56005-8 I. Introduction, Chemical Properties, and Historical Time Line ..................... A. Introduction................................................................................................... B. Chemical Structure and Properties .............................................................. C. Historical Time Line ..................................................................................... II. Mechanisms of Action .................................................................................. A. Neurotransmitter Activities........................................................................... B. Discrimination Studies.................................................................................. C. Effects on Neuropeptides............................................................................... D. Possible Effects on Neuroadaptations Related to Drug Sensitization or Tolerance ....................................................................................................... III. Evidence of Efficacy in Animal Models........................................................ A. Drug Self-Administration .............................................................................. B. Acute Opioid Withdrawal .............................................................................. C. Conditioned Place Preference........................................................................ D. Locomotor Activity........................................................................................ E. Dopamine Efflux............................................................................................. IV Evidence of Efficacy and Subjective Effects in Humans .............................. A. Evidence of Efficacy........................................................................................ B. Subjective Effects ........................................................................................... V. Pharmacokinetics ........................................................................................... A. Absorption....................................................................................................... B. Distribution .................................................................................................... C. Metabolism .................................................................................................... D. Excretion [...]
Lire la suiteThe Pharmacology of Lysergic Acid Diethylamide : a Review Torsten PASSIE, John H. HALPERN, Dirk O. STICHTENOTH, Hinderk M. EMRICH, Annelie HINTZEN CNS Neuroscience & Therapeutics, 2008, 14, 295-314. Doi: 10.1111/j.1755-5949.2008.00059.x Lysergic acid diethylamide (LSD) was synthesized in 1938 and its psychoactive effects discovered in 1943. It was used during the 1950s and 1960s as an experimental drug in psychiatric research for producing so-called “experimental psychosis” by altering neurotransmitter system and in psychotherapeutic procedures (“psycholytic” and “psychedelic” therapy). From the mid 1960s, it became an illegal drug of abuse with widespread use that continues today. With the entry of new methods of research and [...]
Lire la suiteAyahuasca : Uses, Phytochemical and Biological Activities, Edgar Antonio Estrella‑Parra et al., 2019
Ayahuasca : Uses, Phytochemical and Biological Activities Edgar Antonio Estrella‑Parra, · Julio Cesar Almanza‑Pérez, · Francisco Javier Alarcón‑Aguilar Natural Products and Bioprospecting, 2019 https://doi.org/10.1007/s13659-019-0210-5 Abstract Ayahuasca (caapi, yajé), is a psychoactive brew from the Amazon Basin region of South America traditionally considered a “master plant.” It is prepared as a decoction from Banisteriopsis caapi and Psychotria viridis, which it is thought that it stimulates creative thinking and visual creativity. Native healers of the Orinoco and Amazon basins have used traditionally ayahuasca as a healing tool for multiple purposes, particularly to treat psychological disorders in the patients, with some beneficial effects experimentally and clinically validated. Recently, [...]
Lire la suiteCannabidiol, a Cannabis sativa constituent, as an anxiolytic drug Alexandre Rafael de Mello Schier, Natalia Pinho de Oliveira Ribeiro, Adriana Cardoso de Oliveira e Silva, Jaime Eduardo Cecilio Hallak, José Alexandre S. Crippa, Antonio E. Nardi, Antonio Waldo Zuardi Revista Brasileira de Psiquiatria, 2012, 34 (Supl1), S104-S117 1516-4446 - ©2012 Elsevier Editora Ltda. All rights reserved. Abstract Objectives : To review and describe studies of the non-psychotomimetic constituent of Cannabis sativa, cannabidiol (CBD), as an anxiolytic drug and discuss its possible mechanisms of action. Method : The articles selected for the review were identified through searches in English, Portuguese, and Spanish in the electronic databases ISI [...]
Lire la suiteFluorinated Cannabidiol Derivatives : Enhancement of Activity in Mice Models Predictive of Anxiolytic, Antidepressant and Antipsychotic Effects Aviva Breuer, Christeene G. Haj, Manoela V. Fogaça, Felipe V. Gomes, Nicole, Rodrigues Silva, João Francisco Pedrazzi, Elaine A. Del Bel, Jaime C. Hallak, José, A. Crippa, Antonio W. Zuardi, Raphael Mechoulam, Francisco S. Guimarães PLOS ONE, Research Article, 2016 | DOI:10.1371/journal.pone.0158779 July 14, 2016 Abstract Cannabidiol (CBD) is a major Cannabis sativa constituent, which does not cause the typical marijuana psychoactivity. However, it has been shown to be active in a numerous pharmacological assays, including mice tests for anxiety, obsessive-compulsive disorder, depression and schizophrenia. In human trials [...]
Lire la suiteEndocannabinoid-Mediated Control of Synaptic Transmission Masanobu KANO, Takako OHNO-SHOSAKU, Yuki HASHIMOTODANI, Motokazu UCHIGASHIMA, and Masahiko WATANABE Physiological Reviews, 2009, 89, 1, 309-380. https://doi.org/10.1152/physrev.00019.2008 I. Introduction 310 II. Cannabinoid Receptors 311 A. CB1 receptor 311 B. CB2 receptor 315 C. “CB3” receptor 315 D. TRPV1 receptor 317 E. GPR55 receptor 317 III. CB1 Receptor Signaling 317 A. Intracellular signaling pathways 317 B. Suppression of transmitter release 318 C. Morphological changes 318 IV. Biochemistry of Endocannabinoids 318 A. Endocannabinoids 318 B. Biosynthesis of anandamide 319 C. Biosynthesis of 2-AG 320 D. Degradation of endocannabinoids 321 E. Endocannabinoid transport 321 F. Lipid raft 322 V. Endocannabinoid-Mediated Short-Term Depression 322 A. Endocannabinoid as a retrograde messenger 322 B. eCB-STD in various brain regions 324 C. Mechanisms of ecb-std 334 VI. [...]
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