Catégorie : Neurobiologie

Neuroprotective Effect of Cannabidiol Against Hydrogen Peroxide in Hippocampal Neuron Culture, Jungnam Kim et al., 2021

Neuroprotective Effect of Cannabidiol Against Hydrogen Peroxide in Hippocampal Neuron Culture Jungnam Kim, Ji Yu Choi, Jeongyeon Seo, and Insung S. Choi Cannabis and Cannabinoid Research, 2021, Volume 6, Number 1, 40-48. Doi : 10.1089/can.2019.0102   Abstract Introduction : Reports on the neurotoxic and neuroprotective effects of cannabidiol (CBD) have not been in complete accord, showing different and somewhat contradictory results depending upon the brain cell types and experimental conditions employed. This work systematically examines the neuroprotective capability of CBD against oxidative stress (i.e., hydrogen peroxide [H2O2]) as well as its toxicity profile in the in vitro culture platform of primary hippocampal neurons. Materials and Methods : [...]

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Reducing Effect of Cannabidiol on Alcohol Self-Administration in Sardinian Alcohol-Preferring Rats, Paola Maccioni et al., 2021

Reducing Effect of Cannabidiol on Alcohol Self-Administration in Sardinian Alcohol-Preferring Rats Paola Maccioni, Jessica Bratzu, Mauro A.M. Carai, Giancarlo Colombo, and Gian Luigi Gessa Cannabis and Cannabinoid Research, 2021, Doi : 10.1089/can.2020.0132   Abstract Introduction : Cannabidiol (CBD) is a major cannabinoid extracted from Cannabis sativa with no abuse potential. Data from recent rodent studies suggest that amelioration of alcohol-motivated behaviors may be one of the numerous pharmacological effects of CBD. This study was designed to contribute to this research, assessing the effect of CBD on operant oral alcohol self-administration in selectively bred Sardinian alcohol preferring (sP) rats, a validated animal model of excessive alcohol consumption. [...]

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Protective Effects of Cannabidivarin and Cannabigerol on Cells of the Blood–Brain Barrier Under Ischemic Conditions, Nicole L. Stone et al., 2021

Protective Effects of Cannabidivarin and Cannabigerol on Cells of the Blood–Brain Barrier Under Ischemic Conditions Nicole L. Stone, Timothy J. England, and Saoirse E. O’Sullivan Cannabis and Cannabinoid Research, 2021, Doi : 10.1089/can.2020.0159   Abstract Background and Objectives : Preclinical studies have shown cannabidiol is protective in models of ischemic stroke. Based on results from our recent systematic review, we investigated the effects of two promising neuroprotective phytocannabinoids, cannabigerol (CBG) and cannabidivarin (CBDV), on cells of the blood–brain barrier (BBB), namely human brain microvascular endothelial cells (HBMECs), pericytes, and astrocytes. Experimental Approach : Cultures were subjected to oxygen-glucose deprivation (OGD) protocol to model ischemic stroke and cell [...]

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Cannabidiol induces rapid-acting antidepressant-like effects and enhances cortical 5-HT/glutamate neurotransmission : role of 5-HT1A receptors, Raquel Linge et al., 2016

Cannabidiol induces rapid-acting antidepressant-like effects and enhances cortical 5-HT/glutamate neurotransmission: role of 5-HT1A receptors Raquel Linge, Laura Jimenez-Sanchez, Leticia Campa, Fuencisla Pilar-Cuellar, Rebeca, Vidal, Angel Pazos, Albert Adell, Alvaro Diaz Neuropharmacology, 2016, 103, 16-26. doi : 10.1016/j.neuropharm.2015.12.017 Abstract Cannabidiol (CBD), the main non-psychotomimetic component of marihuana, exhibits anxiolytic-like properties in many behavioural tests, although its potential for treating major depression has been poorly explored. Moreover, the mechanism of action of CBD remains unclear. Herein, we have evaluated the effects of CBD following acute and chronic administration in the olfactory bulbectomy mouse model of depression (OBX), and investigated the underlying mechanism. For this purpose, we [...]

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Cannabidiol has a unique effect on global brain activity: a pharmacological, functional MRI study in awake mice, Aymen H. Sadaka et al., 2021

Cannabidiol has a unique effect on global brain activity: a pharmacological, functional MRI study in awake mice Aymen H. Sadaka, Ana G. Ozuna1, Richard J. Ortiz, Praveen Kulkarni, Clare T. Johnson, Heather B. Bradshaw, Bruce S. Cushing, Ai‑Ling Li, Andrea G. Hohmann and Craig F. Ferris Journal of Translationnal Medicine, 2021, 19, 220, 1-16. Doi : 10.1186/s12967-021-02891-6   Abstract Background : The phytocannabinoid cannabidiol (CBD) exhibits anxiolytic activity and has been promoted as a potential treatment for post-traumatic stress disorders. How does CBD interact with the brain to alter behavior? We hypothesized that CBD would produce a dose-dependent reduction in brain activity and functional coupling in [...]

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Transient Stimulation with Psychoplastogens Is Sufficient to Initiate Neuronal Growth, Calvin Ly et al., 2020

Transient Stimulation with Psychoplastogens Is Sufficient to Initiate Neuronal Growth Calvin Ly, Alexandra C. Greb, Maxemiliano V. Vargas, Whitney C. Duim, Ana Cristina G. Grodzki, Pamela J. Lein, and David E. Olson ACS Pharmacology and Translational Science, 2020. doi : 10.1021/acsptsci.0c00065   ABSTRACT Cortical neuron atrophy is a hallmark of depression and includes neurite retraction, dendritic spine loss, and decreased synaptic density. Psychoplastogens, small molecules capable of rapidly promoting cortical neuron growth, have been hypothesized to produce long-lasting positive effects on behavior by rectifying these deleterious structural and functional changes. Here we demonstrate that ketamine and LSD, psychoplastogens from two structurally distinct chemical classes, promote [...]

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A single dose of psilocybin increases synaptic density and decreases 5-HT2A receptor density in the pig brain, Nakul Ravi Raval, 2020

A single dose of psilocybin increases synaptic density and decreases 5-HT2A receptor density in the pig brain Nakul Ravi Raval, Annette Johansen, Lene Lundgaard Donovan, Nidia Fernandez Ros, Brice Ozenne, Hanne Demant Hansen, Gitte Moos Knudsen Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 30 November 2020 doi : 10.20944/preprints202011.0742.v1   Abstract : A single dose of psilocybin, a psychedelic and serotonin 2A receptor (5 HT2AR) agonist, may be associated with antidepressant effects. The mechanism behind its antidepressive action is unknown but could be linked to increased synaptogenesis and down-regulation of cerebral 5-HT2AR. Here, we investigate if a single psychedelic dose of psilocybin changes synaptic vesicle protein 2A [...]

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Association of Cannabis Use During Adolescence With Neurodevelopment, Matthew D. Albaugh et al., 2021

Association of Cannabis Use During Adolescence With Neurodevelopment Matthew D. Albaugh, PhD; Jonatan Ottino-Gonzalez, PhD; Amanda Sidwell, BS; Claude Lepage, PhD; Anthony Juliano, PsyD; Max M. Owens, PhD; Bader Chaarani, PhD; Philip Spechler, PhD; Nicholas Fontaine, BS; Pierre Rioux, MSc; Lindsay Lewis, PhD; Seun Jeon, PhD; Alan Evans, PhD; Deepak D’Souza, MD; Rajiv Radhakrishnan, MD; Tobias Banaschewski, MD, PhD; Arun L.W. Bokde, PhD; Erin Burke Quinlan, PhD; Patricia Conrod, PhD; Sylvane Desrivières, PhD; Herta Flor, PhD; Antoine Grigis, PhD; Penny Gowland, PhD; Andreas Heinz, MD, PhD; Bernd Ittermann, PhD; Jean-Luc Martinot,MD, PhD; Marie-Laure Paillère Martinot,MD, PhD; Frauke Nees, PhD; Dimitri Papadopoulos [...]

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Cannabis and synaptic reprogramming of the developing brain, Anissa Bara et al., 2021

Cannabis and synaptic reprogramming of the developing brain Anissa Bara, Jacqueline- Marie N. Ferland, Gregory Rompala, Henrietta Szutorisz and Yasmin L. Hurd Nature Reviews | Neuroscience, 2021, https://doi.org/10.1038/s41583-021-00465-5 Abstract Recent years have been transformational in regard to the perception of the health risks and benefits of cannabis with increased acceptance of use. This has unintended neurodevelopmental implications given the increased use of cannabis and the potent levels of Δ9-​tetrahydrocannabinol today being consumed by pregnant women, young mothers and teens. In this Review, we provide an overview of the neurobiological effects of cannabinoid exposure during prenatal/perinatal and adolescent periods, in which the endogenous cannabinoid system plays [...]

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Absence of Entourage : Terpenoids Commonly Found in Cannabis sativa Do Not Modulate the Functional Activity of Δ9-THC at Human CB1 and CB2 Receptors, Marina Santiago et al., 2019

Absence of Entourage : Terpenoids Commonly Found in Cannabis sativa Do Not Modulate the Functional Activity of Δ9-THC at Human CB1 and CB2 Receptors Marina Santiago, Shivani C. Arnold, Iain S., McGregor and Mark Connor Cannabis and Cannabinoid Research, 2019, Vol. 4, No. 3 doi : 10.1089/can.2019.0016 Abstract Introduction: Compounds present in Cannabis sativa such as phytocannabinoids and terpenoids may act in concert to elicit therapeutic effects. Cannabinoids such as Δ9-tetrahydrocannabinol (Δ9-THC) directly activate cannabinoid receptor 1 (CB1) and cannabinoid receptor 2 (CB2); however, it is not known if terpenoids present in Cannabis also affect cannabinoid receptor signaling. Therefore, we examined six common terpenoids alone, [...]

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