Fatty acid amide hydrolase (FAAH) degrades N-acyl ethanolamines (NAEs), including the endocannabinoid arachidonoyl ethanolamide (AEA). PF-3845 is a potent, selective, and irreversible inhibitor of FAAH (Ki = 0.23 μM). It covalently binds FAAH on Ser241 at the catalytic site, resulting in prolonged elevation of AEA in the brain and plasma in rats after treatment. PF-3845 significantly and persistently reduces inflammatory pain in rats through a cannabinoid receptor-dependent mechanism.[Cayman Chemical]
Biochem/physiol Actions
PF 3845 is a potent, irreversible inhibitor of fatty acid amide hydrolase (FAAH), the principle enzyme involved in the degradation of the endocannabinoid anandamide. The endocannabinoid system is a target for therapeutic pain relief. PF-3845 is a covalent inhibitor that carbamylates FAAH′s serine nucleophile. It high selectivity over other enzymes including FAAH-2. In mouse studies, PF-3845 has been shown to raise brain anandamide levels for up to 24 hr; and in a rat model it produced significant reduction of inflammatory pain..
