Manganese in Melanin

AQUEOUS systems were reported earlier in which a manganese-phenothiazine auto-oxidation led to the emergence of semiquinone free-radicals of the drugs 1 . The mildness of the required conditions permitted the postulation that this interaction might be relevant to the pharmacological action of these...

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Veröffentlicht in:Nature (London) 1964-03, Vol.201 (4925), p.1228-1229
Hauptverfasser: COTZIAS, GEORGE C., PAPAVASILIOU, PAUL S., MILLER, SAMUEL T.
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container_issue 4925
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container_title Nature (London)
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creator COTZIAS, GEORGE C.
PAPAVASILIOU, PAUL S.
MILLER, SAMUEL T.
description AQUEOUS systems were reported earlier in which a manganese-phenothiazine auto-oxidation led to the emergence of semiquinone free-radicals of the drugs 1 . The mildness of the required conditions permitted the postulation that this interaction might be relevant to the pharmacological action of these agents 2 . However, a direct biological demonstration of this specific phenomenon might require extensive technical development. Therefore, a pilot experiment was designed to discover whether manganese offered promise as a generator of free radicals in some other system of obvious biological significance. It was assumed that manganese must abound within an anatomical locus which is rich in free radicals, if this metal is indeed a biological generator of such radicals.
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subjects Activation Analysis
Animals
Cattle
Chemistry Techniques, Analytical
Conjunctiva
Dogs
Hair
Humanities and Social Sciences
letter
Manganese
Melanins
multidisciplinary
Nails
Old Medline
Pigmentation
Poultry
Radioisotopes
Science
Science (multidisciplinary)
title Manganese in Melanin
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