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Content with tag pheomelanin .
Increase of the benzothiazole moiety content of pheomelanin pigment after endogenous free radical inducement
Pheomelanin, the sulfurated form of melanin pigment, is known to produce reactive oxygen species (ROS) and oxidative stress-mediated cytotoxicity. Previous studies have shown a conversion of the...
Influencia diferencial de la expresión de Slc7a11 y la condición corporal sobre la pigmentación producida por feomelanina en dos poblaciones de trepador azul Sitta europea con diferente riesgo de depredación
The expression of the gene Slc7a11 promotes the antioxidant capacity of cells by providing them with cysteine that can be used for the synthesis of glutathione (GSH), the most important...
Juvenile pheomelanin-based plumage colouration has evolved more frequently in carnivorous species
Distinctive pheomelanin-based plumage colouration in juvenile birds has been proposed as a signal of immaturity to avoid aggression by older conspecifics, but recent findings suggest a detoxifying...
Exposure to a competitive social environment activates an epigenetic mechanism that limits pheomelanin synthesis in zebra finches
Competitive environments promote high testosterone levels, oxidative stress and, consequently, impair cellular homeostasis. The regulation of genes involved in the synthesis of the pigment...
Recent shift in the pigmentation phenotype of a wild Neotropical primate
The colors of primates are among the most diverse phenotypes in mammals. These colors are mostly produced by the deposition of melanin pigments in hairs. Many species show considerable variability...
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