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Is Caffeine a Good Scavenger of Oxygenated Free Radicals?
The Journal of Physical Chemistry B, 2011The reactions of caffeine (CAF) with different reactive oxygen species (ROS) have been studied using density functional theory. Five mechanisms of reaction have been considered, namely, radical adduct formation (RAF), hydrogen atom transfer (HAT), single electron transfer (SET), sequential electron proton transfer (SEPT), and proton coupled electron ...
Jorge Rafael León-Carmona, Annia Galano
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American Journal of Physiology, 1994
Studies were performed to examine the mechanisms for the protective effects of free radical scavengers on gentamicin (GM)-mediated nephropathy. Administration of GM at 40 mg/kg sc for 13 days to rats induced a significant reduction in renal blood flow ...
T. Nakajima, A. Hishida, A. Kato
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Studies were performed to examine the mechanisms for the protective effects of free radical scavengers on gentamicin (GM)-mediated nephropathy. Administration of GM at 40 mg/kg sc for 13 days to rats induced a significant reduction in renal blood flow ...
T. Nakajima, A. Hishida, A. Kato
semanticscholar +1 more source
Free Radical Scavenging by Ethanol Extract of Propolis
International Journal of Radiation Biology, 1990The free radical scavenging ability of an ethanolic extract of propolis (EEP) was demonstrated by electron spin resonance spectroscopy, when 2,2-diphenyl-1-picrylhydrazyl (DPPH) was treated with increasing concentrations of EEP. It was shown that the DPPH signal intensity was inversely related to the EEP concentration and to the reaction time.
Wojciech Król +5 more
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Effect of free radical scavengers on endotoxin-induced respiratory muscle dysfunction.
American Review of Respiratory Disease, 1993Recent studies have suggested that free radicals contribute to the diaphragmatic dysfunction observed in sepsis. However, previous work has not determined which species of free radicals are responsible for producing these effects or whether the ...
G. Supinski, D. Nethery, A. Dimarco
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Suppression of the formation of megamitochondria by scavengers for free radicals
Molecular Aspects of Medicine, 1997In the present study we have attempted to suppress the formation of megamitochondria by scavengers for free radicals since conditions for the formation of megamitochondria are often intimately related to the generation of free radicals. We employed three different experimental conditions to induce megamitochondria in the liver: ethanol, hydrazine and ...
Jerzy Antosiewicz +5 more
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, 1992
Eighteen free radical scavengers (antioxidants) were tested for their ability to control grey mould. Most of the compounds reduced disease significantly in at least one of the test hosts–leaves of tomato, pepper, Senecio sp., bean, eggplant, or rose ...
Y. Elad
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Eighteen free radical scavengers (antioxidants) were tested for their ability to control grey mould. Most of the compounds reduced disease significantly in at least one of the test hosts–leaves of tomato, pepper, Senecio sp., bean, eggplant, or rose ...
Y. Elad
semanticscholar +1 more source
INHIBITION OF DITHRANOL INFLAMMATION BY FREE-RADICAL SCAVENGERS
The Lancet, 1984Dithranol (anthralin) inflammation of forearm skin was completely inhibited by various scavengers of free radicals of the oxygen species. It is concluded that dithranol inflammation is initiated by formation of free radicals; these may act through lipid peroxidation and production of inflammatory endoperoxides or by a more direct mechanism.
Clifford M. Lawrence +2 more
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Journal of Neurotrauma, 2003
To examine the mechanism of the increase in cerebral blood flow induced by L-arginine administration after traumatic brain injury, the cerebral hemodynamic effects of L-arginine, D-arginine, and the free radical scavengers superoxide dismutase (SOD) and ...
L. Cherian, C. Robertson
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To examine the mechanism of the increase in cerebral blood flow induced by L-arginine administration after traumatic brain injury, the cerebral hemodynamic effects of L-arginine, D-arginine, and the free radical scavengers superoxide dismutase (SOD) and ...
L. Cherian, C. Robertson
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Probucol, a superoxide free radical scavenger in vitro
Atherosclerosis, 1991Free radical (FR) mediated oxidation of low density lipoproteins (LDL) has been implicated in atherogenesis. Probucol is a lipid lowering agent with antioxidant properties which may protect the LDL from FR mediated damage. The specific mechanism by which probucol acts as an antioxidant has not previously been reported.
Bridges, A.B. +2 more
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