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In Vivo UV-Induced Fluorescence Spectroscopy of Skin in Parkinson's Disease.
Dokl Biol Sci
January 2025
Research Center of Neurology, Moscow, Russia.
Characteristic patterns of UV-induced skin autofluorescence were determined for patients with Parkinson's disease (PD) and associated with dysmetabolic alterations, such as nonenzymatic protein glycation, an increase in extracellular matrix stiffness, impaired metabolism of tissue fluorophores, mitochondrial dysfunction, and accumulation of aberrant proteins. Key differences in skin autofluorescence spectra were for the first time observed in PD, making it possible to discriminate between PD patients and healthy persons or individuals without signs of chronic neurodegeneration. Namely, skin fluorescence related to the reflected signal upon excitation with UV light at 375 nm was lower in PD patients.
View Article and Find Full Text PDFEfficacy of Natural β-Carotene Chewable Tablets Derived from Banana ( AA) Pulp in Reducing UV-Induced Skin Erythema.
Nutrients
December 2024
Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok 65000, Thailand.
Background/objectives: UV radiation is a primary cause of skin damage and photoaging. β-carotene, a potent antioxidant, aids in mitigating UV-induced oxidative stress and enhancing skin photoprotection. This research aimed to evaluate the efficacy of a nutraceutical product designed to prevent photoaging.
View Article and Find Full Text PDFPoly(Acrylic Acid)/TiO Nanocomposite Hydrogels for Paper Artwork Cleaning and Protection.
Molecules
December 2024
Department of Chemical Engineering Materials Environment, Sapienza University of Rome, Via del Castro Laurenziano 7, 00161 Rome, Italy.
Paper-based artworks are prone to natural aging processes driven by chemical and biological processes. Numerous treatments have been developed to mitigate deterioration and prevent irreversible damage. In this study, we investigated the use of poly(acrylic acid)/TiO composite hydrogels, combining their cleaning and protective functions in a minimally invasive treatment.
View Article and Find Full Text PDFEnhanced Synthesis of Volatile Compounds by UV-B Irradiation in Leaves.
Metabolites
December 2024
College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China.
Volatile compounds have a deep influence on the quality and application of the medicinal herb ; however, little is known about the effect of UV-B radiation on volatile metabolites. We herein investigated the effects of UV-B exposure on the volatile compounds and transcriptome of to assess the potential for improving its quality and medicinal characteristics. Out of 733 volatiles obtained, a total of 133 differentially expressed metabolites (DEMs) were identified by metabolome analysis.
View Article and Find Full Text PDFSelf-Wrinkling-Induced Mechanically Adaptive Patterned Surface of Photocuring Coating for Abrasion Resistance.
Adv Mater
December 2024
School of Chemistry & Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China.
Providing mechanically adaptive performance to surfaces is significant in preserving materials from damage in variable environments, however, it has rarely been studied. Inspired by the mechanically adaptive behaviors of the surface microstructure on the carapace of desert scorpions and bark of desert tamarisks, a self-wrinkled mechanically adaptive patterned surface (SWMAPS) using one-step UV-curing and self-wrinkling technique is reported. Because of the fluorinated polyurethane photo-initiator formed by self-assembly at the top surface, UV-induced photo-crosslinking can spontaneously generate a gradient-crosslinked structure and wrinkled patterns with different morphology.
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