Results 61 to 70 of about 14,856 (220)
Cancer Science, EarlyView.UV irradiation induces two major types of pyrimidine dimers, CPDs and 6–4PPs. Whereas 6–4PPs efficiently induce cell‐cycle arrest, CPDs do not and frequently persist into S phase. As a result, DSBs can arise in the presence of unrepaired CPDs after 6–4PPs have been repaired, increasing the risk of genomic instability.
Ken‐ichi Yoshioka +2 more
wiley +1 more source
Photochemistry and Photobiology, Volume 101, Issue 2, Page 338-349, March/April 2025.In the present work with mouse models, we demonstrate that a novel compound, NEO400, is able to profoundly protect skin against damage caused by UV radiation (UVR) when it is applied to skin post‐UVR exposure. In comparison, Aloe vera or linoleic acid are unable to achieve a similar level of protection.
Stephen Swenson +6 more
wiley +1 more source
Thermal Cyclobutane Ring Formation
The cyclobutane moiety is found in many natural products and bioactive compounds. A high number of total syntheses of cyclobutane-containing natural products has been reported. In addition, cyclobutanes and cyclobutenes are useful synthetic intermediates
Almendros, Pedro, Aragoncillo, Cipriano
core +1 more source
[3-Benzoyl-2,4-bis(3-nitrophenyl)cyclobutyl](phenyl)methanone
Acta Crystallographica Section E, 2012 The asymmetric unit of the title compound, C30H22N2O6, comprises a half-molecule of the cyclobutane derivative. The least-squares planes defined by the respective C atoms of the aromatic substituents intersect at angles of 76.81 (7) and 89.22 ...
Prakash S. Nayak +5 more
doaj +1 more source
Eurasian Chemico-Technological Journal, 2020 The present study is a continuation of the scientific research works for the synthesis of anthraquinonе-containing derivatives with cyclic ring systems by the interaction of 1,2,4-trihydroxyanthraquinone (purpurin) with cyclopropanecarboxylic acid ...
Т. V. Kharlamova +3 more
doaj +1 more source
Interventional human ocular safety experiments for 222‐nm far‐ultraviolet‐C lamp irradiation
Photochemistry and Photobiology, Volume 101, Issue 2, Page 517-526, March/April 2025.To directly assess the ocular safety of 222‐nm far‐ultraviolet‐C (UVC) irradiation in humans, five subjects were exposed to 222‐nm UVC at doses of 22, 50, and 75 mJ/cm2. The findings indicate that far‐UVC irradiation does not cause “clinically significant photokeratitis” or long‐term ocular damage, though it may induce temporary discomfort.
Kazunobu Sugihara +3 more
wiley +1 more source
PhotochemThe [2+2]-photocycloaddition of 2-acetoxy-1,4-naphthoquinone with 1,1-diphenylethylene, styrene and cyclopentene was conducted in a conventional batch reactor.
Madyan A. Yaseen +3 more
doaj +1 more source
Spectroscopic analysis of bacterial photoreactivation
Photochemistry and Photobiology, Volume 101, Issue 2, Page 494-504, March/April 2025.This study investigates the effectiveness of fluorescence and Raman spectroscopy in detecting bacterial photoreactivation. Fluorescence spectroscopy shows limitations, because the intense fluorescence of tryptophan and tyrosine masks fluorescence emitted by thymine molecules.
Keyvan Khosh Abady +4 more
wiley +1 more source
Photoprotective potential of gadusol against ultraviolet B radiation in melanocytes
Photochemistry and Photobiology, EarlyView.Gadusol protects melanocytes from ultraviolet B (UVB)‐induced damage without cytotoxicity. Abstract The increasing incidence of skin cancer, including melanoma, combined with the need for ultraviolet (UV) filters that are safe for human health and marine ecosystems, is driving the search for new photoprotective agents.
Andressa Mai Matsumoto +8 more
wiley +1 more source
UV-induced cyclobutane pyrimidine dimers are mutagenic in mammalian cells
, 1986 We used a simian virus 40-based shuttle vector plasmid, pZ189, to determine the role of pyrimidine cyclobutane dimers in UV light-induced mutagenesis in monkey cells. The vector DNA was UV irradiated and then introduced into monkey cells by transfection.
Munson, P. J. +5 more
core +2 more sources