Journal
NEUROPHARMACOLOGY
Volume 56, Issue -, Pages 244-253Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuropharm.2008.07.037
Keywords
Cannabinoid; Microglia; Neuroinflammation
Categories
Funding
- NIDA [DA 14486, DA21285, DA22469]
- NATIONAL INSTITUTE ON DRUG ABUSE [R01DA014486, R01DA021285, R21DA022469] Funding Source: NIH RePORTER
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The endocannabinoid signaling system (eCBSS) is composed of cannabinoid (CB) receptors, their endogenous ligands (the endocannabinoids, eCB) and the enzymes that produce and inactivate these ligands. Neurons use this signaling system to communicate with each other and Delta(9)-tetrahydrocannabinol (THC), the main psychotropic ingredient of Cannabis sativa, induces profound behavioral effects by impinging on this communication. Evidence now shows that microglia, the macrophages of the brain, also express a functional eCBSS and that activation of CB receptors expressed by activated microglia controls their immune-related functions. This review summarizes this evidence, discusses how microglia might use the eCBSS to communicate with each other and neighboring cells, and argues that compounds selectively targeting the eCBSS expressed by microglia constitute valuable therapeutics to manage acute and chronic neuroinflammation, without inducing the psychotropic effects and underlying addictive properties commonly associated with THC. Published by Elsevier Ltd.
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