Results 111 to 120 of about 169,076 (377)

Polymorphic α‐Glucans as Structural Scaffolds in Cryptococcus Cell Walls for Chitin, Capsule, and Melanin: Insights From 13C and 1H Solid‐State NMR

Angewandte Chemie, EarlyView.
Cryptococcus neoformans cell wall α‐1,3‐glucans as dual anchors for melanin and capsule: Solid‐state NMR of intact C. neoformans cells reveals five forms of α‐1,3‐glucans that structurally bridge melanin and capsule layers. These polysaccharides interact with chitin, chitosan, and β‐glucans to create a molecular scaffold that underlies virulence and ...
Ankur Ankur, Jayasubba Reddy Yarava, Isha Gautam, Faith J. Scott, Frederic Mentink‐Vigier, Christine Chrissian, Li Xie, Dibakar Roy, Ruth E. Stark, Tamara L. Doering, Ping Wang, Tuo Wang   +11 more
wiley   +2 more sources

Bacterial melanin promotes recovery after sciatic nerve injury in rats

Neural Regeneration Research, 2015
Bacterial melanin, obtained from the mutant strain of Bacillus Thuringiensis, has been shown to promote recovery after central nervous system injury. It is hypothesized, in this study, that bacterial melanin can promote structural and functional recovery
Olga V Gevorkyan, Irina B Meliksetyan, Tigran R Petrosyan, Anichka S Hovsepyan   +3 more
doaj   +1 more source

Mechanistic studies of anti-hyperpigmentary compounds: elucidating their inhibitory and regulatory actions. [PDF]

, 2014
Searching for depigmenting agents from natural sources has become a new direction in the cosmetic industry as natural products are generally perceived as relatively safer.
Cheng, CH, Lam, RY, Lin, ZX, Sviderskaya, EV   +3 more
core   +2 more sources

Gentle Label‐Free Nonlinear Optical Imaging Relaxes Linear‐Absorption‐Mediated Triplet

Advanced Science, EarlyView.
The phototoxicity in nonlinear optical microscopy arises mainly from linear absorption of intrinsic biomolecules rather than nonlinear absorption. This mechanism is supported by a reproducible phototoxicity assay based on widely available chicken breast.
Geng Wang, Lianhuang Li, Janet E. Sorrells, Jianxin Chen, Haohua Tu   +4 more
wiley   +1 more source

Protection of melanized Cryptococcus neoformans from lethal dose gamma irradiation involves changes in melanin's chemical structure and paramagnetism. [PDF]

PLoS ONE, 2011
Certain fungi thrive in highly radioactive environments including the defunct Chernobyl nuclear reactor. Cryptococcus neoformans (C. neoformans), which uses L-3,4-dihydroxyphenylalanine (L-DOPA) to produce melanin, was used here to investigate how gamma ...
Abdelahad Khajo, Ruth A Bryan, Matthew Friedman, Richard M Burger, Yan Levitsky, Arturo Casadevall, Richard S Magliozzo, Ekaterina Dadachova   +7 more
doaj   +1 more source

Frontiers in Pigment Cell and Melanoma Research

, 2018
We identify emerging frontiers in clinical and basic research of melanocyte biology and its associated biomedical disciplines. We describe challenges and opportunities in clinical and basic research of normal and diseased melanocytes that impact current ...
Birlea, Stanca, Bosenberg, Marcus W., Box, Neil F., Brash, Douglas, Cassidy, Pamela B., Chen, Suzie, D'Orazio, John August, Filipp, Fabian V., Fujita, Mayumi, Goh, Boon-Kee, Herlyn, Meenhard, Indra, Arup K., Larue, Lionel, Leachman, Sancy A., Liu-Smith, Feng, Manga, Prashiela, Montoliu, Lluis, Norris, David A., Poole, Caroline Le, Shellman, Yiqun, Smalley, Keiran S. M., Spritz, Richard A., Sturm, Richard A., Swetter, Susan M., Terzian, Tamara, Wakamatsu, Kazumasa, Weber, Jeffrey S.   +26 more
core   +1 more source

Orientation to the sun by animals and its interaction with crypsis [PDF]

, 2015
1. Orientation with respect to the sun has been observed in a wide range of species and hasgenerally been interpreted in terms of thermoregulation and/or ultraviolet (UV) protection. For countershaded animals, orientation with respect to the sun may also
Cuthill, Innes C., Harris, Julie M., Lovell, P. George, Penacchio, Olivier, Ruxton, Graeme D.   +4 more
core   +6 more sources

Bioproduction, characterization, anticancer and antioxidant activities of extracellular melanin pigment produced by newly isolated microbial cell factories Streptomyces glaucescens NEAE-H

Scientific Reports, 2017
In this present study, a newly isolated strain, Streptomyces sp. NEAE-H, capable of producing high amount of black extracellular melanin pigment on peptone-yeast extract iron agar and identified as Streptomyces glaucescens NEAE-H.
N. El‑Naggar, Sara M. El-Ewasy
semanticscholar   +1 more source

Label‐Free 3D Photoacoustic Imaging of Tumor Organoids for Volumetric Drug Screening

Advanced Science, EarlyView.
A label‐free organoid photoacoustic imaging (LFOPI) system is developed for precise volumetric drug screening evaluation. As a proof of concept, LFOPI's performance in chemotherapy and immunotherapy drug screening assays are further evaluated. The LFOPI offers unique non‐invasive, label‐free capabilities for tumor organoids, and contributes to the ...
Xiaofei Luo, Maike Chen, Han Shan, Xize Yu, Qibo Lin, Qian Tao, Xiongwei Wei, Changling Lv, Ziyan Chen, Fan Zhuo, Xi Zhu, Jiaxing He, Zhaoxi Li, Chunlong Fei, Jing Xu, Juan Su, Zeyu Chen, Shuang Zhao, Xiang Chen   +18 more
wiley   +1 more source

Neuroprotective effects of melanins and melanin derivatives from Calvatia Craniiformis and Xylaria plebeja against Parkinsonian toxins

Scientific Reports
Fungal melanins have remarkable bioactivities, but their practical applications are limited, partly due to their hydrophobic nature. Melanin modification with amino acids was reported to improve their water solubility. This research aimed to extract, and
Duong Thuy Nguyen, Linh Phuong Nguyen Vo, Debby Mangelings, Ann Van Eeckhaut, Yvan Vander Heyden, Hanh T. M. Tran   +5 more
doaj   +1 more source