AbstractAlthough melanin is a photoprotective pigment, its elevated photochemical reactivity could lead to various phototoxic processes. Photoreactivity of synthetic pheomelanin, derived from 5‐S‐cysteinyldopa (5SCD‐M) and its photodegradation products obtained by subjecting the melanin to aerobic irradiation with UV‐visible light, was examined ...
Andrzej Zadlo +9 more
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Probing pheomelanin synthesis using thioflavin T fluorescence [PDF]
The fluorescent rotor probe thioflavin T (ThT) is used to investigate the presence of sheet structures in pheomelanin by studying the formation and disassembly of pheomelanin synthesized from L-cysteine, L-DOPA and the enzyme tyrosinase. Brown/black eumelanin and red/yellow pheomelanin are the most common forms of melanin with the former more ...
Davy, Alastair Douglas, Birch, David
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Variação intraespecífica da cor da pelagem de uma espécie de pequeno roedor sul-americano [PDF]
Intra-specific color variation is often underestimated by researchers, and among mammalian species, intra-specific differences in coloration are poorly documented for most species.
Barquez, Ruben Marcos +3 more
core +2 more sources
Microarray-based analysis of the differential expression of melanin synthesis genes in dark and light-muzzle Korean cattle. [PDF]
The coat color of mammals is determined by the melanogenesis pathway, which is responsible for maintaining the balance between black-brown eumelanin and yellow-reddish pheomelanin. It is also believed that the color of the bovine muzzle is regulated in a
Sang Hwan Kim +2 more
doaj +1 more source
Probing Near-Infrared Photorelaxation Pathways in Eumelanins and Pheomelanins [PDF]
Ultraviolet-visible spectroscopy readily discerns the two types of melanin pigments (eumelanin and pheomelanin), although fundamental details regarding the optical properties and pigment heterogeneity are more difficult to disentangle via analysis of the broad featureless absorption spectrum alone.
Piletic, Ivan R +2 more
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Sex-specific phenotypic integration: Endocrine profiles, coloration, and behavior in fledgling boobies [PDF]
The intensity of color expression in animals plays a key role in social environments as a mechanism to signal individual capacities in competitive contests. Selective pressures for resource competition differ at different stages of life and between sexes;
Fargallo, Juan A. +6 more
core +1 more source
Melanoma, Melanin, and Melanogenesis: The Yin and Yang Relationship
Melanin pigment plays a critical role in the protection against the harmful effects of ultraviolet radiation and other environmental stressors. It is produced by the enzymatic transformation of L-tyrosine to dopaquinone and subsequent chemical and ...
Radomir M. Slominski +6 more
doaj +1 more source
Skin Lightening Treatments: A Review on the Effect of Intravenous Glutathione in the Disease States of Women [PDF]
The skin bleaching industry is a global business with a vast array of anti-melanogenic choices including glutathione. Glutathione is synthesized in vivo but has been used as a bodily supplement by medical personnel to aid in preventative medicine.
Mthombeni, Buhle
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Melanin-based coloration in juvenile kestrels (Falco tinnunculus) covaries with anti-predatory personality traits [PDF]
Recent studies have shown that melanin-based coloration is associated with the ability to cope with stressful environments, potentially explaining why coloration covaries with anti-predator behaviours, boldness and docility.
Henry, I. +3 more
core +1 more source
Sequence characterization and polymorphism of melanocortin 1 receptor gene in some goat breeds with different coat color of Mongolia [PDF]
Objective Extension and Agouti loci play a key role for proportions of eumelanin and pheomelanin in determining coat color in several species, including goat. Mongolian goats exhibit diverse types of coat color phenotypes. In this study, investigation of
Onolragchaa Ganbold +6 more
doaj +1 more source

