Neopterin as an Endogenous Antioxidant
Pteridines, 1995 The in vitro antioxidative activity of neopterin and its in vivo potency to suppress gastric ischemia were investigated. The scavenging activity of the reduced form of neopterin, 5,6,7,8-tetrahydroneopterin (NPH4), against superoxide anion radicals ...
Kojima Shuji
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Analytical Chemistry, 2016 H2S plays important physiological and pathological roles in the cardiovascular system and nervous system. However, recent evidence imply that hydrogen polysulfides (H2Sn) are the actual signaling molecules in cells.
Y. Huang +3 more
semanticscholar +1 more source
Superoxide reductase from Giardia intestinalis: structural characterization of the first sor from a eukaryotic organism shows an iron centre that is highly sensitive to photoreduction [PDF]
, 2015 Superoxide reductase (SOR), which is commonly found in prokaryotic organisms, affords protection from oxidative stress by reducing the superoxide anion to hydrogen peroxide.
Bandeiras, Tiago M. +8 more
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Ovariectomy increases the participation of hyperpolarizing mechanisms in the relaxation of rat aorta. [PDF]
PLoS ONE, 2013 This study examines the downstream NO release pathway and the contribution of different vasodilator mediators in the acetylcholine-induced response in rat aorta 5-months after the loss of ovarian function.
Ana Sagredo +6 more
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Antioxidants, 2022 New hydrophobic derivatives of cinnamic and hydroxycinnamic (ferulic and cumaric) acids obtained by chemical esterification of the carboxylic group with C10 linear alcohol were studied to evaluate their antioxidant capacity toward the superoxide anion ...
Diego Romano Perinelli +5 more
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Insights into Manganese Superoxide Dismutase and Human Diseases
International Journal of Molecular Sciences, 2022 Redox equilibria and the modulation of redox signalling play crucial roles in physiological processes. Overproduction of reactive oxygen species (ROS) disrupts the body’s antioxidant defence, compromising redox homeostasis and increasing oxidative stress,
Mengfan Liu +5 more
semanticscholar +1 more source
Carbon-sulfur bond strength in methanesulfinate and benzenesulfinate ligands directs decomposition of Np(v) and Pu(v) coordination complexes. [PDF]
, 2020 Gas-phase coordination complexes of actinyl(v) cations, AnO2+, provide a basis to assess fundamental aspects of actinide chemistry. Electrospray ionization of solutions containing an actinyl cation and sulfonate anion CH3SO2- or C6H5SO2- generated ...
Gibson, John K +4 more
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Vibronic coupling in the superoxide anion: The vibrational dependence of the photoelectron angular distribution [PDF]
, 2016 We present a comprehensive photoelectron imaging study of the O₂(X³Σg⁻,v′=0–6)←O₂⁻(X²Πg,v′′=0) and O₂(a¹Δg,v′=0–4)←O₂⁻(X²Πg,v′′=0)photodetachment bands at wavelengths between 900 and 455 nm, examining the effect of vibronic coupling on the photoelectron ...
Cavanagh, Steven J. +9 more
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Generation of superoxide and singlet oxygen from α-tocopherolquinone and analogues. [PDF]
, 2007 Three potential routes to generation of reactive oxygen species from a tocopherolquinone have been identified. The quinone of the water-soluble vitamin E analogue Trolox C (Trol-Q) is reduced by hydrated electron and isopropanol a hydroxyalkyl radical ...
Bisby, RH +4 more
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Antioxidant and radical scavenging activities of some norcantharidin and bridged perhydroisoindole derivatives [PDF]
Journal of the Serbian Chemical Society, 2013 A series of norcantharidin and bridged perhydroisoindole derivatives were evaluated for their antioxidant and radical scavenging activities. Different in vitro methodologies such as total reducing power, 1,1-diphenyl-2- picrylhydrazil (DPPH•) free ...
Peksel Aysegul +3 more
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