Molecular Pharmacology of Phytocannabinoids
- 25 January 2017
- book chapter
- review article
- Published by Springer Science and Business Media LLC
- Vol. 103, 61-101
- https://doi.org/10.1007/978-3-319-45541-9_3
Abstract
Cannabis sativa has been used for recreational, therapeutic and other uses for thousands of years. The plant contains more than 120 C21 terpenophenolic constituents named phytocannabinoids. The Δ9-tetrahydrocannabinol type class of phytocannabinoids comprises the largest proportion of the phytocannabinoid content. Δ9-tetrahydrocannabinol was first discovered in 1971. This led to the discovery of the endocannabinoid system in mammals, including the cannabinoid receptors CB1 and CB2. Δ9-Tetrahydrocannabinol exerts its well-known psychotropic effects through the CB1 receptor but this effect of Δ9-tetrahydrocannabinol has limited the use of cannabis medicinally, despite the therapeutic benefits of this phytocannabinoid. This has driven research into other targets outside the endocannabinoid system and has also driven research into the other non-psychotropic phytocannabinoids present in cannabis. This chapter presents an overview of the molecular pharmacology of the seven most thoroughly investigated phytocannabinoids, namely Δ9-tetrahydrocannabinol, Δ9-tetrahydrocannabivarin, cannabinol, cannabidiol, cannabidivarin, cannabigerol, and cannabichromene. The targets of these phytocannabinoids are defined both within the endocannabinoid system and beyond. The pharmacological effect of each individual phytocannabinoid is important in the overall therapeutic and recreational effect of cannabis and slight structural differences can elicit diverse and competing physiological effects. The proportion of each phytocannabinoid can be influenced by various factors such as growing conditions and extraction methods. It is therefore important to investigate the pharmacology of these seven phytocannabinoids further, and characterise the large number of other phytocannabinoids in order to better understand their contributions to the therapeutic and recreational effects claimed for the whole cannabis plant and its extracts.Keywords
This publication has 100 references indexed in Scilit:
- Involvement of PPARγ in the antitumoral action of cannabinoids on hepatocellular carcinomaCell Death & Disease, 2013
- Pharmacological characterization of GPR55, a putative cannabinoid receptorPharmacology & Therapeutics, 2010
- Evaluation of prevalent phytocannabinoids in the acetic acid model of visceral nociceptionDrug and Alcohol Dependence, 2009
- 5-HT1A receptor function in major depressive disorderProgress in Neurobiology, 2009
- Effects of Δ9-tetrahydrocannabivarin on [35S]GTPγS binding in mouse brain cerebellum and piriform cortex membranesBritish Journal of Pharmacology, 2008
- Gender-specific decrease in NUDR and 5-HT1A receptor proteins in the prefrontal cortex of subjects with major depressive disorderInternational Journal of Neuropsychopharmacology, 2008
- The phytocannabinoid Δ9‐tetrahydrocannabivarin modulates inhibitory neurotransmission in the cerebellumBritish Journal of Pharmacology, 2008
- Cannabinoid CB1 receptor inverse agonists and neutral antagonists: Effects on food intake, food-reinforced behavior and food aversionsPhysiology & Behavior, 2007
- Cannabidiol displays unexpectedly high potency as an antagonist of CB1 and CB2 receptor agonists in vitroBritish Journal of Pharmacology, 2007
- The psychoactive plant cannabinoid, Δ9‐tetrahydrocannabinol, is antagonized by Δ8‐ and Δ9‐tetrahydrocannabivarin in mice in vivoBritish Journal of Pharmacology, 2007