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Maguire RF, Wilkinson DJ, England TJ, O'Sullivan SE. The Pharmacological Effects of Plant-Derived versus Synthetic Cannabidiol in Human Cell Lines. Med Cannabis Cannabinoids 2022; 4:86-96. [PMID: 35224428 DOI: 10.1159/000517120] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/08/2021] [Indexed: 12/31/2022] Open
Abstract
Introduction Cannabidiol (CBD) can be isolated from Cannabis sativa L. or synthetically produced. The aim of this study was to compare the in vitro effects of purified natural and synthetic CBD to establish any pharmacological differences or superiority between sources. Methods Six purified samples of CBD were obtained, 4 of these were natural and 2 synthetic. The anticancer effects of CBD were assessed in a human ovarian cancer cell line (SKOV-3 cells). The neuroprotective effects of CBD were assessed in human pericytes in a model of stroke (oxygen glucose deprivation [OGD]). The ability of CBD to restore inflammation-induced intestinal permeability was assessed in differentiated human Caco-2 cells (a model of enterocytes). Results (1) In proliferating and confluent SKOV-3 cells, all CBD samples similarly reduced resazurin metabolism as a marker of cell viability in a concentration-dependent manner (p < 0.001). (2) In pericytes exposed to OGD, all CBD samples similarly reduced cellular damage (measured by lactate dehydrogenase) at 24 h by 31-48% and reduced inflammation (measured by IL-6 secretion) by 30-53%. Attenuation of IL-6 was inhibited by 5HT1A receptor antagonism for all CBD sources. (3) In differentiated Caco-2 cells exposed to inflammation (TNFα and IFNγ, 10 ng/mL for 24 h), each CBD sample increased the speed of recovery of epithelial permeability compared to control (p < 0.05-0.001), which was inhibited by a CB1 receptor antagonist. Conclusion Our results suggest that there is no pharmacological difference in vitro in the antiproliferative, anti-inflammatory, or permeability effects of purified natural versus synthetic CBD. The purity and reliability of CBD samples, as well as the ultimate pharmaceutical preparation, should all be considered above the starting source of CBD in the development of new CBD medicines.
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Affiliation(s)
- Ryan F Maguire
- Division of Graduate Entry Medicine and Medical Sciences, School of Medicine, University of Nottingham, Royal Derby Hospital, Nottingham, United Kingdom
| | - Daniel J Wilkinson
- Division of Graduate Entry Medicine and Medical Sciences, School of Medicine, University of Nottingham, Royal Derby Hospital, Nottingham, United Kingdom
| | - Timothy J England
- Division of Graduate Entry Medicine and Medical Sciences, School of Medicine, University of Nottingham, Royal Derby Hospital, Nottingham, United Kingdom.,Department of Stroke, University Hospitals of Derby and Burton, Derby, United Kingdom
| | - Saoirse E O'Sullivan
- Division of Graduate Entry Medicine and Medical Sciences, School of Medicine, University of Nottingham, Royal Derby Hospital, Nottingham, United Kingdom.,Artelo Biosciences, Inc., La Jolla, California, USA
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Abstract
The non-psychoactive component of Cannabis Sativa, cannabidiol (CBD), has centered the attention of a large body of research in the last years. Recent clinical trials have led to the FDA approval of CBD for the treatment of children with drug-resistant epilepsy. Even though it is not yet in clinical phases, its use in sleep-wake pathological alterations has been widely demonstrated.Despite the outstanding current knowledge on CBD therapeutic effects in numerous in vitro and in vivo disease models, diverse questions still arise from its molecular pharmacology. CBD has been shown to modulate a wide variety of targets including the cannabinoid receptors, orphan GPCRs such as GPR55 and GPR18, serotonin, adenosine, and opioid receptors as well as ligand-gated ion channels among others. Its pharmacology is rather puzzling and needs to be further explored in the disease context.Also, the metabolism and interactions of this phytocannabinoid with other commercialized drugs need to be further considered to elucidate its clinical potential for the treatment of specific pathologies.Besides CBD, natural and synthetic derivatives of this chemotype have also been reported exhibiting diverse functional profiles and providing a deeper understanding of the potential of this scaffold.In this chapter, we analyze the knowledge gained so far on CBD and its analogs specially focusing on its molecular targets and metabolic implications. Phytogenic and synthetic CBD derivatives may provide novel approaches to improve the therapeutic prospects offered by this promising chemotype.
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Abame MA, He Y, Wu S, Xie Z, Zhang J, Gong X, Wu C, Shen J. Chronic administration of synthetic cannabidiol induces antidepressant effects involving modulation of serotonin and noradrenaline levels in the hippocampus. Neurosci Lett 2020; 744:135594. [PMID: 33388355 DOI: 10.1016/j.neulet.2020.135594] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 12/17/2020] [Accepted: 12/20/2020] [Indexed: 12/20/2022]
Abstract
Cannabidiol (CBD) is a non-psychotomimetic compound derived from Cannabis sativa. Preclinical and clinical studies have shown therapeutic potential of CBD in a variety of disorders. Despite several research efforts on CBD, its antidepressant activity has been poorly investigated and the exact mechanism of action remains unclear. Thus, this study aimed to further explore the mechanism of CBD after chronic administration (7 days). First, the dose level of CBD that is enough to produce antidepressant effects after chronic administration was explored. Second, the changes in key proteins and neurotransmitters through such methods as real-time polymerase chain reaction (RT-PCR), western blotting, and high-performance liquid chromatography-electrochemical detection (HPLC-ECD) were critically studied. Furthermore, correlation between behavioral phenotypes with protein and neurotransmitters was established and the possible mechanism was herein postulated. The results showed that only the high dose CBD 100 mg/kg chronic administration induced antidepressant-like effects in mice subjected to forced swim test. Chronic CBD 100 mg/kg administration resulted in significant increases in serotonin (5-HT) and noradrenaline (NA) levels in the hippocampus (HPC). Similarly, the chronic administration of CBD 30 mg/kg and CBD 100 mg/kg significantly decreased nuclear factor kappa B (NF-κB) expression in the HPC. Moreover, none of the treatments were observed to induce locomotor effects. Thus, we concluded that chronic administration of CBD (100 mg/kg) induced antidepressant-like effects by increasing 5-HT and NA levels in the HPC. These results shed new light on further discovery of the antidepressant effect of CBD.
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Affiliation(s)
- Melkamu Alemu Abame
- CAS Key Laboratory of Receptor Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences (CAS), Shanghai, 201203, China; School of Pharmacy, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yang He
- CAS Key Laboratory of Receptor Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences (CAS), Shanghai, 201203, China
| | - Song Wu
- Department of Druggabilty Evaluation, Topharman Shanghai Co., Ltd., Shanghai, 201203, China
| | - Zhifei Xie
- Department of Druggabilty Evaluation, Topharman Shanghai Co., Ltd., Shanghai, 201203, China
| | - Jian Zhang
- Department of Druggabilty Evaluation, Topharman Shanghai Co., Ltd., Shanghai, 201203, China
| | - Xudong Gong
- Department of Druggabilty Evaluation, Topharman Shanghai Co., Ltd., Shanghai, 201203, China
| | - Chunhui Wu
- Department of Druggabilty Evaluation, Topharman Shanghai Co., Ltd., Shanghai, 201203, China
| | - Jingshan Shen
- CAS Key Laboratory of Receptor Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences (CAS), Shanghai, 201203, China; School of Pharmacy, University of Chinese Academy of Sciences, Beijing, 100049, China.
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