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- W83242528 abstract "We have previously demonstrated that rat epidermal microsomes NADPH-dependently convert 15(S)-hydroperoxy-5,8,11,13-eicosatetraenoic acid (15-HPETE) into 15-hydroxy-5,8,11-eicosatrienoic acid (15-HETrE). The present study examines the mechanism of this reductive conversion. Rat epidermal microsomes were incubated with [1-14C]15-HPETE in the presence and absence of NADPH. Major reaction products were purified by high performance liquid chromatography (HPLC) and analyzed by gas chromatography-mass spectrometry (GC-MS), UV spectroscopy and/or cochromatography with standard products. In the presence of NADPH, 15-HPETE was transformed to 13-hydroxy-14,15-epoxy-5,8,11-eicosatrienoic acid (13-HEpETrE), 15(S)-hydroxy-5,8,11,13-eicosatetraenoic acid (15-HETE), 15-keto-5,8,11-eicosatrienoic acid (15-KETrE) and 15-hydroxy-5,8,11-eicosatrienoic acid (15-HETrE). In the absence of NADPH, the microsomes reacted with 15-HPETE to form 13-HEpETrE, 15-keto-5,8,11,13-eicosatetraenoic acid (15-KETE) and 15-HETE. Furthermore, when supplemented with NADPH, epidermal microsomes converted 15-KETE to 15-KETrE, which was subsequently reduced to 15-HETrE. These data suggest that rat epidermal microsomes are capable of metabolizing 15-HPETE to 15-HETrE via the following reaction steps: conversion of HPETE to KETE, NADPH-dependent double bond saturation in KETE to KETrE and keto-reduction of the latter compound to HETrE." @default.
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- W83242528 date "1992-01-01" @default.
- W83242528 modified "2023-09-23" @default.
- W83242528 title "Suggested mechanism for the formation of 15-hydroxyeicosatrienoic acid by rat epidermal microsomes." @default.
- W83242528 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/1292524" @default.
- W83242528 hasPublicationYear "1992" @default.
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