Cannabis consumption and the risk of psychosis Alice Mulè, Lucia Sideli, Giuseppe Colli, Laura Ferraro, Caterina La Cascia, Crocettarachele Sartorio, Fabio Seminerio, Giada Tripoli, Marta Di Forti, Daniele La Barbera, Robin Murray Evidence-based Psychiatric Care, 2017, 3, 25-31 Enfin, un article récent (novembre 2018) explorant la co-occurence "consommation de cannabis / troubles "psychotique"", qui plus est international (anglo-italien), et comprenant, parmi les signataires, les célèbres Robin Murray du Kings Collège londonien, et Marta Di Forti de l'Université de Palerme, qui énonce clairement l'incapacité épidémiologique à établir un lien de causalité entre "consommation de cannabis et éclosion de troubles "psychotique"" !!! : "Conclusions : The [...]
Lire la suiteDown-Regulation of Cannabinoid Type 1 (CB1) Receptor and its Downstream Signaling Pathways in Metastatic Colorectal Cancer Valeria Tutino, Maria Gabriella Caruso, Valentina De Nunzio, Dionigi Lorusso, Nicola Veronese, Isabella Gigante, Maria Notarnicola and Gianluigi Giannelli Cancers, 2019, 11, 708, 1-14. doi :10.3390/cancers11050708 Abstract : Changes in the regulation of endocannabinoid production, together with an altered expression of their receptors are hallmarks of cancer, including colorectal cancer (CRC). Although several studies have been conducted to understand the biological role of the CB1 receptor in cancer, little is known about its involvement in the metastatic process of CRC. The aim of this study was to investigate the [...]
Lire la suiteBibliographie : Interactions et antagonisme THC - CBD Docteur Christian SUEUR, GRECC, mars 2020. Les interactions entre le THC et le CBD sur le système endocannabinoide, quant aux effets psychotomimetic (production de "symptomes psychotiques") sont opposés : là où le THC produit préférentiellement de l'anxiété, et des effets "psychotisants", le CBD est plutôt anxiolytique et "antipsychotique". Ces deux phytocannabinoïdes sont "antagonistes", et contribuent, parmi d'autres inter-relations entre les phytocannabinoïdes, les terpènes et les flavonoïdes composant le cannabis, aux "effets d'entourage" fondamentaux, tout autant quant à la production "d'effets indésirables" et de risques pour la santé mentale du consommateur, que dans le cadre de [...]
Lire la suiteBibliographie CANNABINOÏDES et Neuroprotection Docteur Christian Sueur, GRECC, février 2020.
Lire la suiteIs there a role for cannabidiol in psychiatry ? Julia Machado Khoury , Maila de Castro Lourenço das Neves, Marco Antônio Valente Roque, Daniela Alves de Brito Queiroz , Andre Augusto Corrêa de Freitas, Angelo de Fatima, Fabrıcio Moreira and Frederico Duarte Garcia The World Journal of Biological Psychiatry, 2017, 16 p. Doi : 10.1080/15622975.2017.1285049 ABSTRACT Objectives : Understanding whether cannabidiol (CBD) is useful and safe for the treatment of psychiatric disorders is essential to empower psychiatrists and patients to take good clinical decisions. Our aim was to conduct a systematic review regarding the benefits and adverse events (AEs) of CBD in the treatment of schizophrenia, psychotic [...]
Lire la suiteAcute and chronic effects of cannabinoids on effort-related decision-making and reward learning: an evaluation of the cannabis ‘amotivational’ hypotheses Will Lawn, Tom P. Freeman, Rebecca A. Pope, Alyssa Joye, Lisa Harvey, Chandni Hindocha, Claire Mokrysz, Abigail Moss, Matthew B. Wall, Michael A.P. Bloomfield, Ravi K. Das, Celia J.A. Morgan, David J. Nutt, H. Valerie Curran Psychopharmacology, 2016, 233, 3537–3552 Doi : 10.1007/s00213-016-4383-x Abstract Rationale : Anecdotally, both acute and chronic cannabis use have been associated with apathy, amotivation, and other reward processing deficits. To date, empirical support for these effects is limited, and no previous studies have assessed both acute effects of Δ-9-tetrahydrocannabinol (THC) and [...]
Lire la suiteCannabinoid receptor expression in non-small cell lung cancer. Effectiveness of tetrahydrocannabinol and cannabidiol inhibiting cell proliferation and epithelial mesenchymal transition in vitro Lara Milian, Manuel Mata, Javier Alcacer, Marıa Oliver, Marıa Sancho-Tello, Jose Javier Martın de Llano, Carlos Camps, Jose Galbis, Julian Carretero, Carmen Carda PLoS ONE, 2020, 15, (2): e0228909. Doi : 10.1371/journal.pone.0228909 Abstract Background/Objective : Patients with non-small cell lung cancer (NSCLC) develop resistance to antitumor agents by mechanisms that involve the epithelial-to-mesenchymal transition (EMT). This necessitates the development of new complementary drugs, e.g., cannabinoid receptors (CB1 and CB2) agonists including tetrahydro-cannabinol (THC) and cannabidiol (CBD). The combined use of THC and CBD [...]
Lire la suiteLes troubles cognitifs et psychiatriques liés à la consommation de cannabis Alain DERVAUX, Marie-Odile KREBS , Xavier LAQUEILLE Bulletin de l'Académie Nationale de Médecine, 2014, 198, no 3, 559-577, séance du 25 mars 2014 RÉSUMÉ Plusieurs études ont montré que le Δ-9-THC, principal principe actif du cannabis entraînait des troubles de l’attention, de la mémoire et des fonctions exécutives. Ils sont liés à la dose, à la fréquence, à la durée d’exposition et à l’âge de la première consommation. Ils peuvent disparaître après sevrage, mais des anomalies durables s’observent chez les sujets ayant débuté leur consommation avant l’âge de 15 ans. La fréquence de [...]
Lire la suiteA tale of two cannabinoids : The therapeutic rationale for combining tetrahydrocannabinol and cannabidiol Ethan Russo & Geoffrey W. Guy Medical Hypotheses, 2006, 66, 234–246 doi : 10.1016/j.mehy.2005.08.026 Summary This study examines the current knowledge of physiological and clinical effects of tetrahydrocannabinol (THC) and cannabidiol (CBD) and presents a rationale for their combination in pharmaceutical preparations. Cannabinoid and vanilloid receptor effects as well as non-receptor mechanisms are explored, such as the capability of THC and CBD to act as anti-inflammatory substances independent of cyclo-oxygenase (COX) inhibition. CBD is demonstrated to antagonise some undesirable effects of THC including intoxication, sedation and tachycardia, while contributing analgesic, anti-emetic, [...]
Lire la suiteCannabis and the developing brain : Insights from behavior Viviana Trezza, Vincenzo Cuomo, Louk J.M.J. Vanderschuren European Journal of Pharmacology, 2008, 585, 441-452. Doi : 10.1016/j.ejphar.2008.01.058 A B S T R A C T The isolation and identification, in 1964, of delta-9-tetrahydrocannabinol (THC), the primary psycho-active compound in cannabis, opened the door to a whole new field of medical research. The exploration of the therapeutic potential of THC and other natural and synthetic cannabinoid compounds was paralleled by the discovery of the endocannabinoid system, comprising cannabinoid receptors and their endogenous ligands, which offered exciting new insights into brain function. Besides its well-known involvement in specific [...]
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