PF-3845 is a potent, selective, and irreversible fatty acid amide hydrolase (FAAH) inhibitor with a Ki of 0.23 μM. Fatty acid amide hydrolase (FAAH) is an enzyme that catalyzes N-acyl ethanolamines (NAEs), including the endocannabinoid arachidonoyl ethanolamide (AEA). Mechanistic and structural studies demonstrated that PF-3845 acts as a covalent inhibitor and carbamylates the active site serine241 of FAAH. PF-3845 covalently binds FAAH on Ser241 at the catalytic site, resulting in prolonged elevation of AEA in the brain and plasma in rats after treatment. Initial experiments indicated that PF-3845 is 10 to 20 times more potent than other FAAH inhibitors and has superior pharmacokinetic properties. PF-3845 significantly and persistently blockes inflammatory pain in rats through a cannabinoid receptor-dependent mechanism. In animal studies, PF-3845 elevated brain anandamide levels for up to 24 hours and produced a marked cannabinoid receptor-dependent reduction in inflammatory pain.
|Animal models||Male C57BL/6 mice|
|Formulation||PF-3845 is dissolved at 1 mg/ml by sonication and vortexing directly into a solution of 18:1:1 v/v/v saline:emulphor:ethanol.|
|Dosages||10 mg/kg or 1-30 mg/kg|
|Administration||Administered via i.p. 1 hour before sacrificed by CO2 or oral administration.|
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.
|Solubility||DMSO 90 mg/mL|
|Related FAAH Products|
JNJ-42165279 is a potent and selective FAAH inhibitor with IC50s of 70 ± 8 nM and 313 ± 28 nM for hFAAH and rFAAH, respectively.
FAAH-IN-2 is a potent FAAH(fatty acid amide hydrolase) inhibitor extracted from Patent WO/2008/100977A2.
URB597 is a potent, orally bioavailable FAAH inhibitor with IC50 of 4.6 nM, with no activity on other cannabinoid-related targets.
JNJ-1661010 is a potent and selective FAAH inhibitor with IC50 of 10 nM (rat) and 12 nM (human), exhibits >100-fold selectivity for FAAH-1 when compared to FAAH-2.
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