USE OF VITAMIN A IN THE TREATMENT OF CUTANEOUS DISEASES
- 1 July 1948
- journal article
- research article
- Published by American Medical Association (AMA) in Archives of Dermatology and Syphilology
- Vol. 58 (1) , 64-73
- https://doi.org/10.1001/archderm.1948.01520200067009
Abstract
VITAMIN A is an unsaturated cyclic alcohol.1It has been extracted from natural sources and reduced to crystalline form,2and its synthesis has been reported.3The precursors of vitamin A are synthesized only by plants, as far as as is known,1and these substances, classed as carotenoids, function as photosensitive structures in plants.4In the animal kingdom, carotenoids are oxidized to vitamin A, and the vitamin is stored in the body. In some fish and mammals tremendous amounts of vitamin A are found stored in the liver and in the intestinal fat.5The purpose of these great stores is not known. In the human organism, vitamin A is stored in the liver and carotene, after oxidization to vitamin A, is also stored. The conversion of carotene to vitamin A has been assumed to occur in the liver. However, it has been shown that in ratsKeywords
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