Cannabinoid Receptor
The
cannabinoid receptors
are a class of receptors under the
G-protein coupled receptor
superfamily. Their
ligands
are known as
cannabinoids
. There are currently two known subtypes, CB1 which is expressed mainly in the
basal ganglia
and the
limbic system
of the
brain
, but also in the
lungs
,
liver
and
kidneys
and CB2 which is expressed on
T cells
of the
immune system
. CB1 and CB2 are approximately 44%
homologous
and as such, allows for development of selective
agonists
and
antagonists
for both subtypes. Cannabinoid receptors work by inhibiting
adenylate cyclase
and thereby inhibit production of the
second messenger
molecule
cyclic AMP
. They are activated by cannabinoids, found naturally inside the body or introduced as a drug (which may be a synthetic compound or a herbal extract.)
See also
Cannabinoids
External Links and References
Dr. Robert J. Melamede Ph.D.University of Colorado: Conducting Scientific research on Cannabinoids
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