Zobrazeno 1 - 10
of 221
pro vyhledávání: '"Giuseppe Prota"'
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 89:1101-1106
A survey of the distribution of mycosporines in marine organisms has shown that these compounds, previously found only in a few species, are almost ubiquitary among invertebrates and occur also in fishes, mainly in ripe eggs. These were found to cont
Publikováno v:
Scopus-Elsevier
The skin depigmenting agent hydroquinone (HQ) is shown to inhibit melanogenesis in vitro by acting as an alternate substrate of tyrosinase and preventing conversion of tyrosine to melanin. Upon the action of tyrosinase, and in the presence of catalyt
Autor:
Giuseppe Prota
Publikováno v:
Pigment Cell Research. 3:25-31
Autor:
Sofia Memoli, Anna Palumbo, Giuseppe Prota, Giovanna Misuraca, Marco d'Ischia, Alessandra Napolitano
Publikováno v:
Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism. 1346:61-68
Although it has long been known that epidermal melanocytes produce and excrete a number of melanin-related metabolites, including 5.6-dihydroxyindole (DHI), 5,6-dihydroxyindole-2-carboxylic acid (DHICA), and 5-S-cysteinyldopa (CD), the possible funct
Publikováno v:
Tetrahedron: Asymmetry. 14:1133-1140
In a recent work addressing the structural characterization of melanin pigments, we reported the isolation and characterization of trimeric oligomers of 5,6-dihydroxyindole-2-carboxylic acid (DHICA), a key intermediate in the biosynthesis of the dark
Publikováno v:
Biochimica et Biophysica Acta (BBA) - General Subjects. 1571:157-166
In the presence of iron or copper ions, the course of the oxidation in air of 5-S-cysteinyldopa (1), the main biosynthetic precursor of pheomelanins and trichochromes, was markedly changed affording two main products. One of these was identified as t
Publikováno v:
Tetrahedron. 58:3681-3687
A great part of the current knowledge about the chemistry and the structure of melanins arises from in vitro studies involving oxidative polymerization of 5,6-dihydroxyindoles under biomimetic conditions. Previous studies carried out on the 5,6-dihyd
Autor:
Giuseppe Prota
Publikováno v:
Pigment Cell Research. 13:283-293
Publikováno v:
Biochimica et Biophysica Acta (BBA) - General Subjects. 1475:295-306
A new enzymatic procedure was developed for isolation of eumelanin from black human hair which might provide a substantially intact pigment for structural characterization. Sequential digestion with protease, proteinase K and papaine in the presence
Publikováno v:
Journal of Investigative Dermatology. 114(6):1141-1147
A highly sensitive, easy-to-perform method for melanin analysis in pigmented tissues based on alkaline hydrogen peroxide degradation has been developed and accomplishes simultaneous determination of eumelanins and pheomelanins. Pyrrole-2,3,5- tricarb