PMID- 461993 OWN - NLM STAT- MEDLINE DCOM- 19790917 LR - 20131121 IS - 0034-5164 (Print) IS - 0034-5164 (Linking) VI - 24 IP - 2 DP - 1979 May TI - Hydrolysis of 11-palmitoyloxy-delta 9-tetrahydrocannabinol to 11-hydroxy-delta 9-tetrahydrocannabinol by cholesterol esterase and a lipase. PG - 393-6 AB - 11-Palmitoyloxy-delta 9-tetrahydrocannabinol (11-palm-delta 9-THC) has been identified in the rat in our laboratory as a long-retained metabolite of delta 9-tetrahydrocannabinol (delta 9-THC), the active component of marihuana (Leighty, 1973). Although it is not known as yet if 11-palm-delta 9-THC is itself psychoactive it could be hydrolyzed to active 11-hydroxy-delta 9-tetrahydrocannabinol (11-OH-delta 9-THC). Our in vitro studies show that cholesterol esterase and a lipase can hydrolyze 11-palm-delta 9-THC to 11-OH-delta 9-THC. FAU - Leighty, E G AU - Leighty EG LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Res Commun Chem Pathol Pharmacol JT - Research communications in chemical pathology and pharmacology JID - 0244734 RN - 7J8897W37S (Dronabinol) RN - EC 3.1.1.- (Carboxylic Ester Hydrolases) RN - EC 3.1.1.13 (Sterol Esterase) RN - EC 3.1.1.3 (Lipase) SB - IM MH - Animals MH - Carboxylic Ester Hydrolases/*metabolism MH - Dronabinol/*analogs & derivatives/metabolism MH - Hydrolysis MH - Lipase/*metabolism MH - Liver/enzymology/*metabolism MH - Rats MH - Sterol Esterase/*metabolism MH - Time Factors EDAT- 1979/05/01 00:00 MHDA- 1979/05/01 00:01 CRDT- 1979/05/01 00:00 PHST- 1979/05/01 00:00 [pubmed] PHST- 1979/05/01 00:01 [medline] PHST- 1979/05/01 00:00 [entrez] PST - ppublish SO - Res Commun Chem Pathol Pharmacol. 1979 May;24(2):393-6.