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Toxicology and Applied Pharmacology, 1993
Free radicals are recognized more and more frequently as being involved in the mechanism of toxicity of chemicals. In some cases, the organic radicals are involved, but often oxygen radicals result from redox cycling chemicals. Free radicals are usually very reactive, which, in addition to causing toxicities, can make them difficult to detect. Electron
S D, Aust +4 more
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Free radicals are recognized more and more frequently as being involved in the mechanism of toxicity of chemicals. In some cases, the organic radicals are involved, but often oxygen radicals result from redox cycling chemicals. Free radicals are usually very reactive, which, in addition to causing toxicities, can make them difficult to detect. Electron
S D, Aust +4 more
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Nature Chemistry, 2013
Thomas Tidwell reflects on the overlooked — but prescient — proposal by the British chemists Arthur Downes and Thomas Blunt for photochemical free-radical formation, decades before Moses Gomberg launched the field of radical chemistry by preparing triphenylmethyl, the first stable organic radical.
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Thomas Tidwell reflects on the overlooked — but prescient — proposal by the British chemists Arthur Downes and Thomas Blunt for photochemical free-radical formation, decades before Moses Gomberg launched the field of radical chemistry by preparing triphenylmethyl, the first stable organic radical.
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Archives of Biochemistry and Biophysics, 2002
Free radicals and reactive oxygen species (ROS) have been associated with the etiology and/or progression of a number of diseases and in aging. Many of the proteins oxidatively modified by free radicals contain side-chain carbonyl derivatives, which can be used as markers for protein oxidation.
Jackob, Moskovitz +2 more
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Free radicals and reactive oxygen species (ROS) have been associated with the etiology and/or progression of a number of diseases and in aging. Many of the proteins oxidatively modified by free radicals contain side-chain carbonyl derivatives, which can be used as markers for protein oxidation.
Jackob, Moskovitz +2 more
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Molecular and Cellular Biochemistry, 1988
Aging is the progressive accumulation of changes with time that are responsible for the ever-increasing likelihood of disease and death. These irreversible changes are attributed to the aging process. This process is now the major cause of death in the developed countries. This fact is obscured by the protean nature of the contributions of this process
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Aging is the progressive accumulation of changes with time that are responsible for the ever-increasing likelihood of disease and death. These irreversible changes are attributed to the aging process. This process is now the major cause of death in the developed countries. This fact is obscured by the protean nature of the contributions of this process
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Annals of the New York Academy of Sciences, 1994
Necrotic cell death is usually a consequence of extensive insult to the cell, leading to release of intracellular contents and an inflammatory response. Apoptosis, however, is a physiological response to damaging influences that requires sufficient maintenance of homeostasis to allow execution of the pathway.
K A, Wood, R J, Youle
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Necrotic cell death is usually a consequence of extensive insult to the cell, leading to release of intracellular contents and an inflammatory response. Apoptosis, however, is a physiological response to damaging influences that requires sufficient maintenance of homeostasis to allow execution of the pathway.
K A, Wood, R J, Youle
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Biochemical and Molecular Medicine, 1996
Free radicals that appear during physiological processes may lead to apoptosis in some pathological conditions when antioxidant capacity of the tissue is surpassed. Additionally, free radicals are involved in the control of apoptosis; antioxidant agents suppress apoptosis induced by a variety of stimuli.
I, Stoian, A, Oros, E, Moldoveanu
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Free radicals that appear during physiological processes may lead to apoptosis in some pathological conditions when antioxidant capacity of the tissue is surpassed. Additionally, free radicals are involved in the control of apoptosis; antioxidant agents suppress apoptosis induced by a variety of stimuli.
I, Stoian, A, Oros, E, Moldoveanu
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Photoionization of Free Radicals
International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry, 1974Since this is the first lecture at this Institute on photoionization and free radicals, permit me to take a few minutes to outline my concept of these terms.
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Journal of Pharmacological and Toxicological Methods, 1993
Because of the molecular configuration, most free radicals are highly reactive and can cause cell injury. Protective mechanisms have evolved to provide defense against free-radical injury. Any time these defense systems are overwhelmed, such as during disease states, cell dysfunction may occur.
N, Kaul +4 more
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Because of the molecular configuration, most free radicals are highly reactive and can cause cell injury. Protective mechanisms have evolved to provide defense against free-radical injury. Any time these defense systems are overwhelmed, such as during disease states, cell dysfunction may occur.
N, Kaul +4 more
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Free Radicals in the Atmosphere
Free Radical Research Communications, 1987Like the oxidation in a flame, the oxidation in the atmosphere is mediated by free radicals. Unlike a flame, however, atmospheric oxidation needs an external source of energy: the sun light. In fact the most important radical acting in the lower atmosphere, the hydroxyl radical, OH, is produced following the UV-photolysis of ozone, O3, which yields an ...
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1977
A free-radical reaction is a chemical process in which molecules having unpaired electrons are involved. The radical species could be a starting compound or a product, but in organic chemistry, the most common cases are reactions that involve radicals as intermediates.
Francis A. Carey, Richard J. Sundberg
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A free-radical reaction is a chemical process in which molecules having unpaired electrons are involved. The radical species could be a starting compound or a product, but in organic chemistry, the most common cases are reactions that involve radicals as intermediates.
Francis A. Carey, Richard J. Sundberg
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