Isolation and identification of 4-hydroxy- and 4-oxoretinoic acid. In vitro metabolites of all-trans-retinoic acid in hamster trachea and liver. |
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Authors: | C A Frolik A B Roberts T E Tavela P P Roller D L Newton M B Sporn |
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Abstract: | Incubation of [3H]retinoic acid in the presence of hamster liver 10000g supernatant produces several metabolites that are more polar than the parent compound. Two of these metabolites are identical with synthetic all-trans-4-hydroxyretinoic acid and all-trans-4-oxoretinoic acid both in ultraviolet absorption and mass spectral characteristics and in migration rates on two different reverse-phase high-pressure liquid chromatographic systems. The metabolites produced in a cell-free liver incubation reaction also migrate on a high-pressure liquid chromatography column together with metabolites isolated from a tracheal organ culture system. Both the metabolites and the synthetic standards show less biological activity than the parent all-trans-retinoic acid in a tracheal organ culture assay. |
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