descriptionPublicationkeyboard_double_arrow_right Article 09 Jun 1962 English Publisher:Springer Science and Business Media LLCJournal:Nature, volume 194, pages 976-976 (issn: 0028-0836, eissn: 1476-4687,

Authors: J, DUCHON;

doi: 10.1038/194976a0

pmid: 13888162

Tyrosine Metabolism in Melanoma

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Abstract

THE urine in patients with generalized melanoma contains substances which cause its dark colour when exposed to air—urinary melanogens1,2, of which there are two types3: (1) nitrogen melanogens, insoluble in ether or ethylacetate, giving a positive Thormahlen test4–6—indole melanogens, as they are called, and (2) non-nitrogen melanogens, soluble in ether or ethylacetate, giving a negative Thormahlen test—phenol melanogens.

Related Organizations

Charles University
Czech Republic

Keywords

Humans, Tyrosine, Melanoma

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Zum Abschied von der Thormählen-Reaktion beim Melanom. Neue Kenntnisse über den frühverstorbenen Dr. med. Johannes Thormählen (1860 — 1892)
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