Results 21 to 30 of about 80,218 (306)

Melanin biopolymer synthesis using a new melanogenic strain of Flavobacterium kingsejongi and a recombinant strain of Escherichia coli expressing 4-hydroxyphenylpyruvate dioxygenase from F. kingsejongi

Microbial Cell Factories, 2022
Background Melanins are a heterologous group of biopolymeric pigments synthesized by diverse prokaryotes and eukaryotes and are widely utilized as bioactive materials and functional polymers in the biotechnology industry.
Han Sae Lee, Jun Young Choi, Soon Jae Kwon, Eun Seo Park, Byeong M. Oh, Jong H. Kim, Pyung Cheon Lee   +6 more
doaj   +1 more source

Radiofrequency Irradiation Mitigated UV-B-Induced Skin Pigmentation by Increasing Lymphangiogenesis

Molecules, 2022
Dermal macrophages containing melanin increase skin pigmentation since dermal melanin removal is slower than epidermal melanin removal. Lymphatic vessels are also involved in melanin clearance. We evaluated whether radiofrequency (RF) irradiation induced
Hyoung Moon Kim, Seyeon Oh, Kyung-A Byun, Jin Young Yang, Hye Jin Sun, Donghwan Kang, Kuk Hui Son, Kyunghee Byun   +7 more
doaj   +1 more source

The Melanin Biosynthesis Genes of Alternaria alternata Can Restore Pathogenicity of the Melanin-Deficient Mutants of Magnaporthe grisea

Molecular Plant-Microbe Interactions, 1997
The phytopathogenic fungi Magnaporthe grisea and Alternaria alternata produce melanin via the polyketide biosynthesis, and both fungi form melanized colonies. However, the site of melanin deposition and the role of melanin in pathogenicity differ between
Chie Kawamura, Jouji Moriwaki, Norio Kimura, Yasunari Fujita, Shin-ichi Fuji, Tetsuji Hirano, Shinzo Koizumi, Takashi Tsuge   +7 more
doaj   +1 more source

Evaluating the “Darkness” of Melanin Materials.

, 2020
We developed a mathematical process to quantify the apparent darkness of solutions containing melanin-like materials. The visible portion of their UV-Vis spectra is model using an exponential equation.
Koen, Vercruysse
core   +1 more source

Structure Prediction from Melanin Spectra amidst Dynamical Heterogeneity

, 2023
Melanin is a biopolymer pigment that plays a central role in skin photoprotection. Its extensive chemical and dynamical heterogeneity impart this property through a broad featureless ultraviolet/visible absorption spectrum. Conventionally, the ra- tional
Arpan, Choudhury, Debashree, Ghosh, Raghunathan, Ramakrishnan   +2 more
core   +1 more source

Evaluation of gingival melanin pigmentation in pediatric population– An observational study

Journal of Family Medicine and Primary Care, 2019
Aim: The aim of this study is to evaluate the gingival melanin pigmentation in the Indian pediatric population. The aim of this study is to find any association between age and melanin distribution, age and intensity of melanin distribution, sex and ...
Jerusha Santa Packyanathan, G Lavanya
doaj   +1 more source

Melanin levels in relation to vitamin D among first-generation immigrants from different ethnic groups and origins: A comparative national Canadian cross-sectional study

Frontiers in Medicine, 2023
IntroductionImmigrants to Western countries tend to have darker skin than native-born populations. We examined the relationship between skin melanin and serum vitamin D (vitD) [S-25(OH)D] levels and explored whether melanin levels explained S-25(OH)D ...
Said Yousef, Said Yousef, Manny Papadimitropoulos, Manny Papadimitropoulos, MoezAlIslam Faris, Hayder Hasan, Alomgir Hossain, Alomgir Hossain, Ian Colman, Douglas Manuel, Douglas Manuel, Douglas Manuel, George A. Wells, George A. Wells   +13 more
doaj   +1 more source

Amino acid modification and structural characterization of Auricularia heimuer melanin [PDF]

Zhongguo niangzao
In order to improve the solubility of Auricularia heimuer melanin, amino acid modification was performed on the melanin extracted from the fermentation broth of A. heimuer. The structure of amino acid melanin with better modification effects was selected
YAO Xiuge, GUO Yan, HAN Chuang, TIAN Shuang, ZHU Jianan, ZHANG Xiaojia, YIN Bo, MA Yinpeng
doaj   +1 more source

Melanin-concentrating hormone regulates the hypercapnic chemoreflex by acting in the lateral hypothalamic area

, 2022
   Melanin-concentrating hormone (MCH) is a hypothalamic neuropeptide involved in a broad range of homeostatic functions including regulation of the hypercapnic chemoreflex.
Luciane Gargaglioni (8795369), Mirela Dias (13217607), Laísa Taís Cabral Rodrigues (13217839), Luis Gustavo Patrone (11945270)   +3 more
core   +1 more source

Melanin ‘dust’ or ‘ghost’? [PDF]

Experimental Dermatology, 2016
To definitely verify the dogma of ‘melanin dust’ in the stratum corneum, Tobin et al have now reported a careful review of the literature with a vis-à-vis of the Fontana Masson (FM) and Von Kossa (VK) histochemical methods plus the Warthin-Starry (WS) stain on very thin cryosections of normal human skin and mouse pelage skin epidermis lacking ...
D'ISCHIA, MARCO, NAPOLITANO, ALESSANDRA, Michalczyk Wetula, Dominika, Przemysław M. , Plonka   +3 more
openaire   +5 more sources