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Steven A. Everett
Researcher at Mount Vernon Hospital
Publications - 40
Citations - 1575
Steven A. Everett is an academic researcher from Mount Vernon Hospital. The author has contributed to research in topics: Radical & Radiolysis. The author has an hindex of 22, co-authored 40 publications receiving 1490 citations. Previous affiliations of Steven A. Everett include Northwood University & University of Dundee.
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Journal ArticleDOI
Comparative mechanisms and rates of free radical scavenging by carotenoid antioxidants
TL;DR: Although there were some discernible trends in carotenoid reactivity for individual radicals, rate constants varied by no greater than a factor of 2.5, the mechanism and rate of scavenging is strongly dependent on the nature of the oxidising radical species but much less dependent onThe carotanoid structure.
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Scavenging of nitrogen dioxide, thiyl, and sulfonyl free radicals by the nutritional antioxidant beta-carotene.
Steven A. Everett,Madeleine F. Dennis,Kantilal B. Patel,S. Maddix,Subhas C. Kundu,Robin L. Willson +5 more
TL;DR: Mechanisms of free radical scavenging by the nutritional antioxidant β-carotene have been investigated by pulse radiolysis and rate constants for thiyl radical-addition reactions vary from 106 to 109M s and correlate with the lipophilicity of the thiyle radical under study.
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Nitric oxide in biological fluids: analysis of nitrite and nitrate by high-performance ion chromatography
Steven A. Everett,Madeleine F. Dennis,Gillian M. Tozer,Vivien E. Prise,Peter Wardman,Michael R.L. Stratford +5 more
TL;DR: This article describes a versatile method for the simultaneous measurement of NO2- and NO3- anions in both plasma and isolated tumour models based on anion-exchange chromatography with spectrophotometric detection (214 nm).
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Oxidation of tetrahydrobiopterin by biological radicals and scavenging of the trihydrobiopterin radical by ascorbate.
TL;DR: At physiological pH the pterin rapidly scavenges a range of biological oxidants often associated with cellular oxidative stress and nitric oxide synthase (NOS) dysfunction including hydroxyl ((*)OH), nitrogen dioxide (NO), glutathione thiyl (GS(*)), and carbonate (CO(3)(*-)) radicals.
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Free-radical repair by a novel perthiol: reversible hydrogen transfer and perthiyl radical formation
TL;DR: The thermodynamic driving force for the observed enhanced free-radical repair reactivity of RSSH compared to RSH is attributed to the resonance stabilization energy of 8.8 kJ mol-1 within the RSS.