Results 171 to 180 of about 5,719 (219)

Hair Re-Pigmentation After Nilotinib [PDF]

Turk J Haematol
Aydın Ö, Turgut M.
europepmc   +1 more source

Serum 5-S-cysteinyldopa as a predictive biomarker for stem cell transplantation-related complications in children and young adults. [PDF]

Blood Cell Ther
Terashita Y, Iguchi A, Sugiyama M, Cho Y, Goudarzi H, Yokota I, Manabe A.   +6 more
europepmc   +1 more source

DOPA pheomelanin is increased in nigral neuromelanin of Parkinson’s disease

Progress in Neurobiology, 2023
Neuromelanin (NM) in dopaminergic neurons of human substantia nigra (SN) has a melanic component that consists of pheomelanin and eumelanin moieties and has been proposed as a key factor contributing to dopaminergic neuron vulnerability in Parkinson's disease (PD).
Waijiao Cai, Kazumasa Wakamatsu, Fabio A Zucca   +2 more
exaly   +5 more sources

How does pheomelanin synthesis contribute to melanomagenesis? [PDF]

BioEssays, 2013
Recently, we reported that melanoma risk in redheads is linked not only to pale skin, but also to the synthesis of the pigment – called pheomelanin – that gives red hair its color. We demonstrated that pheomelanin synthesis is associated with increased oxidative stress in the skin, yet we have not uncovered the chemical pathway between the molecule ...
Ann M, Morgan, Jennifer, Lo, David E, Fisher   +2 more
exaly   +3 more sources

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Selenomelanin: An Abiotic Selenium Analogue of Pheomelanin

Journal of the American Chemical Society, 2020
Melanins are a family of heterogeneous biopolymers found ubiquitously across plant, animal, bacterial, and fungal kingdoms where they act variously as pigments and as radiation protection agents. There exist five multifunctional yet structurally and biosynthetically incompletely understood varieties of melanin: eumelanin, neuromelanin, pyomelanin ...
Wei Cao, Michael D Burkart, Qing Zhe Ni
exaly   +3 more sources

Pheomelanin in fish?

Pigment Cell & Melanoma Research, 2015
1 Department of Molecular Biology, Max Planck Institute for Developmental Biology, T€ ubingen, Germany 2 Guest Group Evolutionary Genomics, Max Planck Institute for Evolutionary Biology, Pl€ on, Germany 3 L€ ubeck Institute of Experimental Dermatology, University of L€ ubeck, L€ ubeck, Germany 4 Department of Physiological Chemistry, Biocenter ...
Kottler, V., Künstner, A., Schartl, M.
openaire   +4 more sources

Optimization of Conditions for Preparing Synthetic Pheomelanin

Pigment Cell Research, 1989
Synthetic melanins are often used as the standards for natural melanins. Conditions for preparing synthetic pheomelanin from L‐dopa and L‐cysteine were studied under different temperatures (25 and 37deg;C), different amounts of cysteine (1.5 and 2.0 eq), and different amounts of tyrosinase (10 and 20 mg).
H, Ozeki, S, Ito, K, Wakamatsu, A J, Thody   +3 more
openaire   +4 more sources

PHEOMELANIN PHOTOCHEMISTRY. PHOTOLYSIS OF MODEL COMPOUNDS

Photochemistry and Photobiology, 1982
Abstract Two pheomelanin model compounds were prepared and their photochemistries examined. Upon irradiation, an oxygen‐mediated photopolymerization reaction was observed. The photopolymers obtained were characterized by their apparent molecular weights, UV and fluorescence spectra.
C T, Liu, M R, Chedekel
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Biosynthetic and structural studies on pheomelanin

Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1987
13C-NMR spectroscopy of pheomelanin biopolymers, prepared from isotopically enriched precursors, has been developed as a tool for structure elucidation of melanins. By employing large pulse-widths and short cycle time, only the signals originating from labeled carbons are observed in the high-resolution spectra of these polymers.
M R, Chedekel, K V, Subbarao, P, Bhan, T M, Schultz   +3 more
openaire   +2 more sources