Results 1 to 10 of about 5,617 (213)

Characterisation of eumelanin-chitosan films [PDF]

Acta Horticulturae, 2018
Food packaging films based on chitosan (1%, w/v) were developed by optimising chitosan thin films with different concentrations of eumelanin 0, 0.05, 0.1, 0.2 and 0.4% respectively. The properties of eumelanin-chitosan (EU-Ch) films, including colour, water contact angle, mechanical properties, degradation ratio, moisture content (MC), and total ...
Jaitrong, S., Srisuk, Pathomthat, Fernandes, Emanuel Mouta, Correlo, V. M., Reis, R. L.   +4 more
openaire   +4 more sources

Substantial Effect of Melanin Influencing Factors on Melanogenesis in Muzzle Melanocytes of Differently Colored Hanwoo [PDF]

Asian-Australasian Journal of Animal Sciences, 2012
The present study was designed to investigate the effect of α-melanocyte-stimulating hormone (α-MSH), nitric oxide (NO) and L-cysteine on melanin production and expression of related genes MC1R, Tyr, Tyrp-1 and Tyrp-2 in muzzle melanocytes of differently
Touseef Amna, Kyoung Mi Park, In-Kyung Cho, Tae Jeong Choi, Seung Soo Lee, Kang-Seok Seo, Inho Hwang   +6 more
doaj   +1 more source

Label-Free Delineation of Human Uveal Melanoma Infiltration With Pump–Probe Microscopy

Frontiers in Oncology, 2022
Uveal melanoma (UM) is the most frequent primary intraocular malignancy in adults, characterized by melanin depositions in melanocytes located in the uveal tract in the eyes.
Bohan Zhang, Tengteng Yao, Tengteng Yao, Yaxin Chen, Chuqiao Wang, Chuqiao Wang, Yongyang Bao, Zhaoyang Wang, Keke Zhao, Minbiao Ji   +9 more
doaj   +1 more source

Beyond Skin and Eyes: The Medical and Social Burden of Oculocutaneous Albinism in Africa: A Narrative Review

JEADV Clinical Practice, EarlyView.
ABSTRACT Oculocutaneous albinism (OCA) is a genetic disorder found worldwide, but its impact is particularly pronounced in the African continent. This results from both a higher prevalence and the persistent myths and superstitions surrounding the condition in many African communities.
Rebecca Donadoni, Niccolò Capurro, Alessandro Svizzero, Valeria Brazzelli   +3 more
wiley   +1 more source

Genetic and phenotypic variation in wood tiger moths from the Caucasus: insights into male warning color variation

Insect Science, EarlyView.
Coloration serves several fitness‐related functions, including thermoregulation, immunity, social signaling, sexual selection, and predator avoidance. Consequently, color polymorphism can have a significant impact on a species’ interactions with its environment, including its relationships with predators, prey, and potential mates. The wood tiger moth (
Juan A. Galarza, Ossi Nokelainen, Melanie N. Brien, Cristina Ottocento, Bibiana Rojas, Janne K. Valkonen, Tamar Chunashvili, Tõnis Tasane, Chris D. Jiggins, Johanna Mappes   +9 more
wiley   +1 more source

Hair Degradation Patterns in Aquatic and Soil Environments

Archaeometry, EarlyView.
ABSTRACT Hair is a biological material that can provide information in archaeology and forensics. Previous studies have mainly examined changes occurring post‐mortem. In this study, we focused on hair pulled out ante‐mortem. The aim of the study was to identify patterns in the degradation of hair in water and soil.
Katarzyna Palacz‐Ziółek, Monika Krzyżanowska, Rafał Ogórek, Marcin Kadej   +3 more
wiley   +1 more source

Towards structure–property–function relationships for eumelanin [PDF]

Soft Matter, 2006
We discuss recent progress towards the establishment of important structure-property-function relationships in eumelanins - key functional bio-macromolecular systems responsible for photo-protection and immune response in humans, and implicated in the development of melanoma skin cancer.
Meredith, P., Powell, B. J., Riesz, J., Nighswander-Rempel, S. P., Pederson, M. R., Moore, E. G.   +5 more
openaire   +7 more sources

Afamelanotide improves quality of life and light tolerance in Austrian erythropoietic protoporphyria patients

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Summary Background Erythropoietic protoporphyria (EPP) is a rare genetic disorder characterized by severe phototoxic reactions that occur within minutes of light exposure. In clinical studies, afamelanotide has been shown to prolong pain‐free sun exposure, improve quality of life, and reduce the frequency and severity of phototoxic reactions ...
Magdalena Seidl‐Philipp, Hanna Schratter, Johanna Auer, Gerold Schwantzer, Maximilian Lammer, Philipp Hinteregger, Ines Vergeiner, Robert Gruber, Peter Wolf, Angelika Hofer   +9 more
wiley   +1 more source

Ultrafast Radical Photogeneration Pathways in Eumelanin^†

Photochemistry and Photobiology, 2022
AbstractEumelanin is a ubiquitous biological pigment that rapidly and efficiently deactivates excited states created by UV or visible radiation. Paradoxically, photoirradiation of eumelanin also generates radicals and harmful reactive oxygen species, but the relationship between these pathways and excited‐state deactivation is uncertain.
Christopher Grieco, Forrest R. Kohl, Bern Kohler   +2 more
openaire   +2 more sources

Functionalized melanin for enhanced energy storage in aqueous and ionic liquid electrolytes

Communications Chemistry
Eumelanin is an interesting functional material for electrochemical applications due to its quinone/hydroquinone redox equilibrium. One major issue in the eumelanin film processing is the lack of solubility in polar solvents. In this study, the influence
Noah Al-Shamery, Florian Heppner, Carsten Dosche, Simon Morgenschweis, Thomas Bredow, Gunther Wittstock, Pooi See Lee   +6 more
doaj   +1 more source