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- W67374490 abstract "Although the authors have demonstrated the inability of rat and guinea pig (GP) skin enzyme preparations to desaturate 18:2n6 into gammalinolenic acid (18:3n6) using an in vitro microsomal system, the fate of this dietary essential fatty acid in the GP epidermis is unknown. To explore the fate of 18:2n6, intact tissue slices from GP epidermis were incubated with (1-/sup 14/C)18:2n6. After incubation, the extracted lipids were transesterified using methanolic-HCL. The fatty acid methyl esters were analyzed using a combination of (i) argentation TLC, scanned using a proportional TLC radioscanner, and (ii) reverse phase HPLC, equipped with a flow through radioscanner. The results indicate that the intact epidermis metabolized /sup 14/C-18:2n6 to a group of novel products more polar than 18:2n6. In subsequent experiments, /sup 14/C-18:2n6 was either incubated with the 800 xg supernatant, the 105,000 xg pellet or supernatant from GP epidermis. Metabolism of 18:2n6 by the high speed supernatant resulted in the generation of polar products with chromatographic properties of not greater than 2 double bonds. These results indicate that although the GP epidermis lacks the capacity to desaturate 18:2n6 to 18:3n6, it can convert dietary 18:2n6 into a group of novel polar metabolites via a cytosolic mediated process.more » The function of these metabolites in the GP integumentary system remains to be determined.« less" @default.
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- W67374490 date "1986-03-05" @default.
- W67374490 modified "2023-09-24" @default.
- W67374490 title "Generation of novel metabolites of dietary linoleic acid (18:2n6) by guinea pig epidermis" @default.
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