Results 101 to 110 of about 21,026 (326)
Advanced Science, EarlyView.The donor engineering strategy enhances the planarity of the π‐conjugated molecular framework, thereby promoting stronger intramolecular charge transfer (ICT). This structural refinement in FBDFDPA leads to a pronounced bathochromic shift in absorption from the NIR‐I to the NIR‐II region, enabling effective photothermal therapy (PTT) for tumors within ...
Kang Xu +8 more
wiley +1 more source
Comparison of humic and fulvic acids from different soils by pyrolysis-mass spectrometry [PDF]
, 1978 7 pages, 3 figures, 11 references.[EN]: Several recent publications showed the usefulness of pyrolysis mass spectrometry for the characterization of the organic matter of total soil samples and of soil organic matter fractions.
Martín Martínez, Francisco +1 more
core +1 more source
SPECTRAL PROPERTIES OF TWO WATER-SOLUBLE MELANINS [PDF]
Biotechnologia ActaAim. The work was purposed to study the spectral properties of two types of water-soluble melanins to clarify the nature of the optical absorption and emission centers in them. Materials and methods.
V.M. Kravchenko +8 more
doaj +1 more source
The Toxicity of Melanin Precursors
Journal of Investigative Dermatology, 1978 The quinone intermediates resulting from tyrosinase-mediated oxidation of tyrosine were evaluated as sulfhydryl reagent inhibitors of purified calf thymus DNA polymerase alpha in order to determine which of these might be cytotoxic. Dopachrome and an oxidation product of 2,4,5-trihydroxyphenylalanine were relatively ineffective as inhibitors of DNA ...
Sylvia M. Tiffany +2 more
openaire +3 more sources
Solving the Amyloid Paradox: Unveiling the Complex Pathogenicity of Amyloid Fibrils
Aggregate, EarlyView.This review addresses the gap between strong evidence for the involvement of amyloid fibrils in neurodegeneration and the failure of anti‐amyloid therapies, a phenomenon herein termed the “amyloid paradox.” To address this paradox, we provide a comprehensive summary of the current understanding of fibrils' pathogenic properties and mechanisms ...
Maksim I. Sulatsky +3 more
wiley +1 more source
Does the abiotic environment influence the distribution of flower and fruit colors?
American Journal of Botany, EarlyView.Abstract Premise Color in flowers and fruits carries multiple functions, from attracting animal partners (pollinators, dispersers) to mitigating environmental stress (cold, drought, UV‐B). With research historically focusing on biotic interactions as selective agents, however, it remains unclear whether abiotic stressors impact flower and fruit colors ...
Agnes S. Dellinger +3 more
wiley +1 more source
Skin Lightening Treatments: A Review on the Effect of Intravenous Glutathione in the Disease States of Women [PDF]
, 2020 The skin bleaching industry is a global business with a vast array of anti-melanogenic choices including glutathione. Glutathione is synthesized in vivo but has been used as a bodily supplement by medical personnel to aid in preventative medicine.
Mthombeni, Buhle
core +1 more source
A flavoprotein supports cell wall properties in the necrotrophic fungus Alternaria brassicicola [PDF]
, 2017 Background Flavin-dependent monooxygenases are involved in key biological processes as they catalyze a wide variety of chemo-, regio- and enantioselective oxygenation reactions.
A. Kwasiborski +12 more
core +6 more sources
Chemistry – A European JournalAbstractMelanin is responsible, in Nature, for photoprotection, for this reason it is expected to be poorly photoreactive. However, the photo‐reactivity of melanin and related materials is well documented. Here we discuss some relevant recent examples to demonstrate that, indeed, the actual mechanism of interaction of melanin with light is complex and ...
Menichetti A., Mordini D., Montalti M.
openaire +2 more sources
Diglycerides of Natural Phenols and Organic Acids for Enhanced Biological Activities
Asian Journal of Organic Chemistry, EarlyView.Diglycerides of natural organic acids and phenols were synthesized regio‐selectively. Diglycerides are structurally similar to cell membranes and are expected to exhibit cell affinity and permeability. The flexible glycerol linkers allow the diglycerides to exhibit not only the physiological activities of each constituent organic acid but also the ...
Jisu Hong +10 more
wiley +1 more source