Effects of cannabinoids and cannabinoid‐enriched Cannabis extracts on TRP channels and endocannabinoid metabolic enzymes

British Journal of Pharmacology - Tập 163 Số 7 - Trang 1479-1494 - 2011
Luciano De Petrocellis1, Alessia Ligresti2, Aniello Schiano Moriello1, Marco Allarà2, Tiziana Bisogno2, Stefania Petrosino2, Colin Stott3, Vincenzo Di Marzo2
1Endocannabinoid Research Group, Institute of Cybernetics, CNR, Pozzuoli (NA), Italy
2Endocannabinoid Research Group, Institute of Biomolecular Chemistry, CNR, Pozzuoli (NA), Italy
3GW Pharma Ltd, UK

Tóm tắt

BACKGROUND AND PURPOSE Cannabidiol (CBD) and Δ9‐tetrahydrocannabinol (THC) interact with transient receptor potential (TRP) channels and enzymes of the endocannabinoid system.EXPERIMENTAL APPROACH The effects of 11 pure cannabinoids and botanical extracts [botanical drug substance (BDS)] from Cannabis varieties selected to contain a more abundant cannabinoid, on TRPV1, TRPV2, TRPM8, TRPA1, human recombinant diacylglycerol lipase α (DAGLα), rat brain fatty acid amide hydrolase (FAAH), COS cell monoacylglycerol lipase (MAGL), human recombinant N‐acylethanolamine acid amide hydrolase (NAAA) and anandamide cellular uptake (ACU) by RBL‐2H3 cells, were studied using fluorescence‐based calcium assays in transfected cells and radiolabelled substrate‐based enzymatic assays. Cannabinol (CBN), cannabichromene (CBC), the acids (CBDA, CBGA, THCA) and propyl homologues (CBDV, CBGV, THCV) of CBD, cannabigerol (CBG) and THC, and tetrahydrocannabivarin acid (THCVA) were also tested.KEY RESULTS CBD, CBG, CBGV and THCV stimulated and desensitized human TRPV1. CBC, CBD and CBN were potent rat TRPA1 agonists and desensitizers, but THCV‐BDS was the most potent compound at this target. CBG‐BDS and THCV‐BDS were the most potent rat TRPM8 antagonists. All non‐acid cannabinoids, except CBC and CBN, potently activated and desensitized rat TRPV2. CBDV and all the acids inhibited DAGLα. Some BDS, but not the pure compounds, inhibited MAGL. CBD was the only compound to inhibit FAAH, whereas the BDS of CBC > CBG > CBGV inhibited NAAA. CBC = CBG > CBD inhibited ACU, as did the BDS of THCVA, CBGV, CBDA and THCA, but the latter extracts were more potent inhibitors.CONCLUSIONS AND IMPLICATIONS These results are relevant to the analgesic, anti‐inflammatory and anti‐cancer effects of cannabinoids and Cannabis extracts.LINKED ARTICLES This article is part of a themed issue on Cannabinoids in Biology and Medicine. To view the other articles in this issue visit http://dx.doi.org/10.1111/bph.2011.163.issue‐7

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British Journal of Pharmacology

Tập 163 Số 7

1479-1494

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