Results 21 to 30 of about 2,749 (174)

Metabolic Basis and Clinical Evidence for Skin Lightening Effects of Thiol Compounds

Antioxidants, 2022
Melanin pigment is a major factor in determining the color of the skin, and its abnormal increase or decrease can cause serious pigmentation disorders.
Yong Chool Boo
doaj   +1 more source

Eumelanin and pheomelanin are predominant pigments in bumblebee (Apidae: Bombus) pubescence [PDF]

PeerJ, 2017
Background Bumblebees (Hymenoptera: Apidae: Bombus) are well known for their important inter- and intra-specific variation in hair (or pubescence) color patterns, but the chemical nature of the pigments associated with these patterns is not fully ...
Carlo Polidori, Alberto Jorge, Concepción Ornosa   +2 more
doaj   +2 more sources

The Multifaceted Opportunities Provided by the Pheomelanin-Inspired 1,4-Benzothiazine Chromophore: A Still-Undervalued Issue

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
doaj   +1 more source

The growth of Escherichia coli cultures under the influence of pheomelanin nanoparticles and a chelant agent in the presence of light

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, Daniel Ortega-Zambrano, María Antonieta Fernández-Herrera, Hilda Mercado-Uribe   +3 more
doaj   +2 more sources

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, Csongor I. Vágási, Orsolya Vincze, Veronika Bókony, Péter L. Pap, Laura Pătraș, Janka Pénzes, Lőrinc Bărbos, Attila Fülöp, Gergely Osváth, Simon Ducatez, Mathieu Giraudeau   +11 more
doaj   +1 more source

Synthesis and structural characteristics analysis of melanin pigments induced by blue light in Morchella sextelata

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, Zhiheng Qiu, Shuang Wang, Shuang Wang, Jiazhi Zhao, Jiazhi Zhao, Lingxiu Cui, Lingxiu Cui, Xinyi Wang, Xinyi Wang, Nuo Cai, Nuo Cai, Hongpeng Li, Hongpeng Li, Shuhua Ren, Shuhua Ren, Tianlai Li, Tianlai Li, Lili Shu, Lili Shu   +19 more
doaj   +1 more source

Importance of melanin‐based colouration and environment in shaping intracellular glutathione levels in nestling and adult tawny owls Strix aluco

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, Pierre Bize, Alexandre Roulin   +2 more
doaj   +1 more source

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, Radosław Jerzy Balwierz, Karol Jasiński, Urszula Skotnicka-Graca   +3 more
doaj   +1 more source

MC1R depalmitoylation inhibition reveals a physiological role for pheomelanin. [PDF]

PNAS Nexus
Abstract 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, García-Guerra M, Araujo-Roque M.   +2 more
europepmc   +3 more sources

Insects synthesize pheomelanin

Pigment Cell & Melanoma Research, 2015
Peer ...
Galván, Ismael, Jorge, Alberto, Edelaar, Pim, Wakamatsu, Kazumasa   +3 more
openaire   +3 more sources