PMID- 2385616 OWN - NLM STAT- MEDLINE DCOM- 19900917 LR - 20190912 IS - 0952-3278 (Print) IS - 0952-3278 (Linking) VI - 40 IP - 2 DP - 1990 Jun TI - Transformation of arachidonic acid by 5- and 15-lipoxygenase pathways in bovine adrenal fasciculata cells. PG - 93-102 AB - [1-14C]Arachidonic acid was incubated with isolated bovine adrenal fasciculata cells for 15 min at 37gC. The metabolites were separated and purified by reverse- and straight-phase high performance liquid chromatography, and identified by gas chromatography-mass spectrometry or radioimmunoassay. Identified metabolites were 5-hydroxy-6,8,11,14-eicosatetraenoic acid (5-HETE), 15-hydroxy-5,8,11,13-eicosatetraenoic acid (15-HETE), leukotriene B4 and 11,14,15-trihydroxy-5,8,12-eicosatrienoic acid (11,14,15-THET). Addition of 15-hydroperoxy-5,8,11,13-eicosatetraenoic acid (15-HPETE), an intermediate metabolite of 15-lipoxygenase pathway to microsomes of bovine adrenal fasciculata cells resulted in the formation of 11,14,15-THET. The formation of 11,14,15-THET by microsomes was not dependent on the presence of NADPH, while it was dose-dependently suppressed by ketoconazole, a potent inhibitor of cytochrome P-450 dependent enzymes. These results indicate that 5- and 15-lipoxygenase pathways of arachidonic acid may exist in bovine adrenal fasciculata cells and that 15-HPETE is further metabolized to 11,14,15-THET by adrenal microsomal cytochrome P-450. FAU - Omura, M AU - Omura M AD - Second Department of Internal Medicine, School of Medicine, Chiba University, Japan. FAU - Hirai, A AU - Hirai A FAU - Tamura, Y AU - Tamura Y FAU - Yoshida, S AU - Yoshida S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Scotland TA - Prostaglandins Leukot Essent Fatty Acids JT - Prostaglandins, leukotrienes, and essential fatty acids JID - 8802730 RN - 0 (Arachidonic Acids) RN - 0 (Cytochrome P-450 Enzyme Inhibitors) RN - EC 1.13.11.- (Arachidonate Lipoxygenases) RN - EC 1.13.11.33 (Arachidonate 15-Lipoxygenase) RN - EC 1.13.11.34 (Arachidonate 5-Lipoxygenase) RN - R9400W927I (Ketoconazole) SB - IM MH - Animals MH - Arachidonate 15-Lipoxygenase/*metabolism MH - Arachidonate 5-Lipoxygenase/*metabolism MH - Arachidonate Lipoxygenases/*metabolism MH - Arachidonic Acids/*metabolism MH - Cattle MH - Chemical Phenomena MH - Chemistry MH - Chromatography, High Pressure Liquid MH - Cytochrome P-450 Enzyme Inhibitors MH - In Vitro Techniques MH - Ketoconazole/pharmacology MH - Male MH - Microsomes/drug effects/enzymology MH - Rats MH - Rats, Inbred Strains MH - Zona Fasciculata/cytology/drug effects/*enzymology EDAT- 1990/06/01 00:00 MHDA- 1990/06/01 00:01 CRDT- 1990/06/01 00:00 PHST- 1990/06/01 00:00 [pubmed] PHST- 1990/06/01 00:01 [medline] PHST- 1990/06/01 00:00 [entrez] AID - 10.1016/0952-3278(90)90150-j [doi] PST - ppublish SO - Prostaglandins Leukot Essent Fatty Acids. 1990 Jun;40(2):93-102. doi: 10.1016/0952-3278(90)90150-j.