Results 21 to 30 of about 3,468 (208)
Molecules, 2023 1,4-Benzothiazines are the main building blocks of the naturally occurring pheomelanin pigments, and their chromophoric properties have been strongly related to the well-known phototoxicity of these pigments, partly responsible for the high incidence of ...
Maria Laura Alfieri, Lucia Panzella
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PLoS ONE, 2022 Growing concern of antibiotic resistance has increased research efforts to find nonspecific treatments to inhibit pathogenic microorganisms. In this regard, photodynamic inactivation is a promising method.
Denisse Fuentes-López +3 more
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Appearing as eumelanin or as pheomelanin and the push towards eumelanin by cysteine.
, 2022 This report is a combination of new and former experimental results collected over the past three years. It details our observations and spectroscopic studies of the air-mediated oxidation of a wide variety of catecholic precursors into melanin-like ...
Jaila, Winford +4 more
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Oxidative physiology is weakly associated with pigmentation in birds
Ecology and Evolution, 2022 The mechanistic link between avian oxidative physiology and plumage coloration has attracted considerable attention in past decades. Hence, multiple proximal hypotheses were proposed to explain how oxidative state might covary with the production of ...
Attila Marton +11 more
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Frontiers in Microbiology, 2023 Morchella sextelata, a highly sought-after edible mushroom worldwide, is evaluated based on its cap color as an essential commercial property indicator. In the present study, the effects of blue light on cap pigmentation in M.
Zhiheng Qiu +19 more
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A significance of botanical and synthetic ingredients in supporting skin depigmentation process [PDF]
Farmacja Polska, 2021 Melanogenesis is a process catalyzed by tyrosinase enzyme leading to synthesis of two types of pigment in the skin: black-brown eumelanin and red-yellow pheomelanin. Pheomelanin is synthesized in the second stage of melanosome maturation, while eumelanin-
Natalia Magdalena Schäfer +3 more
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Journal of Avian Biology, 2022 Resources allocated in reproduction are traded off against those invested in self‐maintenance such as antioxidant response. Glutathione (GSH) is an intracellular antioxidant defence that scavenges reactive oxygen species, the deleterious byproducts of ...
Guillaume Emaresi +2 more
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MC1R depalmitoylation inhibition reveals a physiological role for pheomelanin. [PDF]
PNAS NexusAbstract Pheomelanin is a sulfur-containing pigment produced by melanocytes notably in individuals with red hair/fair skin and animals with orange integumentary structures. Pheomelanin is not photoprotective as the dark eumelanin, but is cytotoxic, being related to a high risk of melanoma independently of UV radiation.
Galván I +2 more
europepmc +3 more sources
The influence of iron on selected properties of synthetic pheomelanin [PDF]
Cell Biochemistry and Biophysics, 2020 AbstractIt is believed that while eumelanin plays photoprotective and antioxidant role in pigmented tissues, pheomelanin being more photoreactive could behave as a phototoxic agent. Although the metal ion-sequestering ability of melanin might be protective, transition metal ions present in natural melanins could affect their physicochemical properties.
Andrzej Zadlo +4 more
openaire +3 more sources
Insects synthesize pheomelanin
Pigment Cell & Melanoma Research, 2015 Peer ...
Galván, Ismael +3 more
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