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Apple oil as a source of ursolic acid for the treatment of hyperpigmentary disorders with molecular and clinical evaluation. [PDF]

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Maisto M   +9 more
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Melanin

The International Journal of Biochemistry & Cell Biology, 1997
Melanin is an irregular light-absorbing polymer containing indoles and other intermediate products derived from the oxidation of tyrosine. Melanin is widely dispersed in the animal and plant kingdoms. It is the major pigment present in the surface structures of vertebrates.
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Melanin and fungi

Current Opinion in Infectious Diseases, 2003
Production of melanin has been associated with virulence in diverse microorganisms. Melanization of fungi has been noted for many years in predominantly subcutaneous infections such as chromoblastomycosis and more recently most extensively studied in a yeast causing systemic infection, Cryptococcus neoformans. Pigmented fungi are increasingly important
Beatriz L, Gómez, Joshua D, Nosanchuk
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Manganese in Melanin

Nature, 1964
AQUEOUS systems were reported earlier in which a manganese-phenothiazine auto-oxidation led to the emergence of semiquinone free-radicals of the drugs1. The mildness of the required conditions permitted the postulation that this interaction might be relevant to the pharmacological action of these agents2.
G C, COTZIAS   +2 more
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Paramagnetic calcium melanins

Biophysics, 2013
Treatment of catechol, pyrogallol, DOPA, dopamine, norepinephrine, and natural polyhydroxy-1,4-naphthoquinone echinochrome by aqueous solution of potassium superoxide (KO2) in the presence of CaCl2 leads to the formation of water-insoluble dark pigments with stable paramagnetic properties ("calcium melanins").
A V, Lebedev   +3 more
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