Abstract
A RECENT report by Zachman and Olson1 described the formation of acidic water-soluble metabolites from vitamin A (retinol) and vitamin A acid (retinoic acid) by perfused rat liver. We have isolated an acidic metabolite, with potent vitamin A-like activity, from both retinol and retinoic acid. No compound metabolically related to retinol or retinoic acid with growth-promoting activity has hitherto been described.
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References
Zachman, R. D., and Olson, J. A., Nature, 201, 1222 (1964).
Moore, T., Vitamin A, 285 (Elsevier Publishing Co., New York, 1957).
Dowling, J. E., and Wald, G., Proc. U. S. Nat. Acad. Sci., 46, 587 (1960).
Redfearn, E. R., Arch. Biochem. Biophys., 91, 226 (1960).
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YAGISHITA, K., SUNDARESAN, P. & WOLF, G. A Biologically Active Metabolite of Vitamin A and Vitamin A Acid. Nature 203, 410–412 (1964). https://doi.org/10.1038/203410b0
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DOI: https://doi.org/10.1038/203410b0
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