O-1656

O-1656 is a drug that acts as a potent and selective agonist for the cannabinoid receptor CB2, with reasonable selectivity over the psychoactive CB1 receptor, though with some variation between species. It has analgesic effects in animal studies, particularly against "atypical" pain stimuli, and has also been used to investigate the function of the CB2 receptor in the immune system.

Pharmacology

O-1656 is a cannabinoid receptor agonist. It is selective for the CB2 receptor, which is primarily found in the peripheral nervous system and in immune cells. The CB2 receptor is not typically associated with the psychoactive effects of cannabis. However, O-1656 does have some activity at the CB1 receptor, which is found in the brain and is responsible for the psychoactive effects of cannabis. The selectivity of O-1656 for the CB2 receptor over the CB1 receptor varies between species.

Medical uses

In animal studies, O-1656 has been found to have analgesic effects, particularly against "atypical" pain stimuli. This suggests that it may have potential for use in the treatment of certain types of pain that are not well managed by other analgesics.

O-1656 has also been used in research to investigate the role of the CB2 receptor in the immune system. The CB2 receptor is thought to play a role in immune response and inflammation, and agonists like O-1656 may have potential for use in the treatment of inflammatory and autoimmune diseases.

See also

• Cannabinoid receptor
• Cannabinoid receptor agonist
• CB1 receptor
• CB2 receptor

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