CB1 and CB2 Receptor Pharmacology.

CB1 and CB2 Receptor Pharmacology. Adv Pharmacol. 2017;80:169-206 Authors: Howlett AC, Abood ME Abstract The CB1 and CB2 cannabinoid receptors (CB1R, CB2R) are members of the G protein-coupled receptor (GPCR) family that were identified over 20 years ago. CB1Rs and CB2Rs mediate the effects of Δ(9)-tetrahydrocannabinol (Δ(9)-THC), the principal psychoactive constituent of marijuana, and subsequently identified endogenous cannabinoids (endocannabinoids) anandamide and 2-arachidonoyl glycerol. CB1Rs and CB2Rs have both similarities and differences in their pharmacology. Both receptors recognize multiple classes of agonist and antagonist compounds and produce an array of distinct downstream effects. Natural polymorphisms and alternative splice variants may also contribute to their pharmacological diversity. As our knowledge of the distinct differences grows, we may be able to target select receptor conformations and their corresponding pharmacological responses. This chapter will discuss their pharmacological characterization, distribution, phylogeny, and signaling pathways. In addition, the effects of extended agonist exposure and how that affects signaling and expression patterns of the receptors are considered. PMID: 28826534 [PubMed - in process]
Source: Advances in Pharmacology - Category: Drugs & Pharmacology Authors: Tags: Adv Pharmacol Source Type: research

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