Results 51 to 60 of about 57,304 (322)

A Comprehensive Review of Mammalian Pigmentation: Paving the Way for Innovative Hair Colour-Changing Cosmetics

open access: yesBiology, 2023
The natural colour of hair shafts is formed at the bulb of hair follicles, and it is coupled to the hair growth cycle. Three critical processes must happen for efficient pigmentation: (1) melanosome biogenesis in neural crest-derived melanocytes, (2) the
Bruno Fernandes   +2 more
doaj   +1 more source

Modeling Fungal Melanin Buildup: Biomimetic Polymerization of 1,8-Dihydroxynaphthalene Mapped by Mass Spectrometry [PDF]

open access: yes, 2017
Due to the emerging biomedical relevance and technological potential of fungal melanins, and prompted by the virtual lack of information about their structural arrangement, an optimized synthetic protocol has been devised for a potential structural model
Barnes   +28 more
core   +1 more source

Microbial melanins for radioprotection and bioremediation

open access: yesMicrobial Biotechnology, 2017
Microbial melanins provide a biocompatible and scalable approach for bioremediation and radioprotection technologies due to their physicochemical properties.
Radames J. B. Cordero   +2 more
semanticscholar   +1 more source

Effect of UV irradiation on free radicals in synthetic melanin and melanin biopolymer from Sepia officinalis – EPR examination

open access: yesNukleonika, 2015
Free radicals in synthetic melanin and melanin from Sepia officinalis were studied by electron paramagnetic resonance (EPR) spectroscopy. The effect of time of ultraviolet (UV) irradiation on free radicals in these melanins was tested.
Zdybel Magdalena, Pilawa Barbara
doaj   +1 more source

Effect of Melanization on Thallus Microstructure in the Lichen Lobaria pulmonaria

open access: yesJournal of Fungi, 2022
Lichens often grow in microhabitats where they experience severe abiotic stresses. Some species respond to high UV radiation by synthesizing dark brown melanic pigments in the upper cortex. However, unlike the melanized structures of non-lichenized fungi,
Amina G. Daminova   +4 more
doaj   +1 more source

5,6-dihydroxyindole-2-carboxylic acid (DHICA): a First Principles Density-Functional Study

open access: yes, 2004
We report first principles density functional calculations for 5,6-dihydroxyindole-2-carboxylic acid (DHICA) and several reduced forms. DHICA and 5,6-dihydroxyindole (DHI) are believed to be the basic building blocks of the eumelanins.
B.J. Powell   +29 more
core   +1 more source

A Histopathological Exploration of the Madurella mycetomatis Grain [PDF]

open access: yes, 2013
Although the Madurella mycetomatis grains seem to interfere with the host defense mechanisms and impede the antifungal drugs penetration, yet their histological features are not fully known and hence this study was set out to determine that.
El-Hassan, A.M. (Ahmed Mohamed)   +3 more
core   +1 more source

Melanins Protect Sporothrix brasiliensis and Sporothrix schenckii from the Antifungal Effects of Terbinafine

open access: yesPLoS ONE, 2016
Terbinafine is a recommended therapeutic alternative for patients with sporotrichosis who cannot use itraconazole due to drug interactions or side effects.
R. Almeida-Paes   +5 more
semanticscholar   +1 more source

Studying grain color diversity in the barley collection of VIR

open access: yesТруды по прикладной ботанике, генетике и селекции, 2022
Background. Dark color of barley grain (Hordeum vulgare L.) can be caused by the synthesis and accumulation of two types of polyphenolic pigments – anthocyanins and melanins, which perform important functions in plant life, participating in the ...
A. Y. Glagoleva   +4 more
doaj   +1 more source

Towards Structure-Property-Function Relationships for Eumelanin

open access: yes, 2005
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 ...
Ben J. Powell   +46 more
core   +1 more source

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