大麻酚
线粒体
大麻素
线粒体通透性转换孔
活力测定
生物
细胞生物学
海马结构
细胞外
大麻素受体
莫里斯水上航行任务
药理学
化学
神经科学
受体
生物化学
程序性细胞死亡
细胞凋亡
医学
大麻
精神科
兴奋剂
作者
Christopher D. Drummond‐Main,Younghee Ahn,Mitchell Kesler,Cezar Gavrilovici,Do Young Kim,Ivana Kiroski,Samantha L. Baglot,Amy Chen,Keith A. Sharkey,Matthew N. Hill,G. Campbell Teskey,Jong M. Rho
出处
期刊:Cannabis and cannabinoid research
[Mary Ann Liebert]
日期:2022-09-15
被引量:8
标识
DOI:10.1089/can.2022.0011
摘要
Background: The mechanisms underlying the clinical effects of CBD remain poorly understood. Given the increasing evidence for CBD's effects on mitochondria, we sought to examine in more detail whether CBD impacts mitochondrial function and neuronal integrity. Methods: We utilized BE(2)-M17 neuroblastoma cells or acutely isolated brain mitochondria from rodents using a Seahorse extracellular flux analyzer and a fluorescent spectrofluorophotometer assay. Mitochondrial ion channel activity and hippocampal long-term potentiation were measured using standard cellular electrophysiological methods. Spatial learning/memory function was evaluated using the Morris water maze task. Plasma concentrations of CBD were assessed with liquid chromatography-mass spectrometry, and cellular viability was evaluated using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) reduction neuronal injury assay. Results: At low micromolar concentrations, CBD reduced mitochondrial respiration, the threshold for mitochondrial permeability transition, and calcium uptake, blocked a novel mitochondrial chloride channel, and reduced the viability of hippocampal cells. These effects were paralleled by in vitro and in vivo learning/memory deficits. We further found that these effects were independent of cannabinoid receptor 1 and mitochondrial G-protein-coupled receptor 55. Conclusion: Our results provide evidence for concentration- and dose-dependent toxicological effects of CBD, findings that may bear potential relevance to clinical populations.
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