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Free-radical theory - Wikipedia, the free encyclopedia (724 words) |
 | In biochemistry, the free radicals of interest are often referred to as "reactive oxygen species" (ROS) because the most biologically significant free radicals are oxygen-centred; however it should be noted that not all free radicals are ROS and not all ROS are free radicals. |
| This involvment is not at all surprising as free radical damage is an important aspect of phagocytosis, inflammation, and apoptosis. |
| The free radical theory of disease states that disease is associated with abnormal levels of oxidation and the generation of free radical damage. |
| Free radical - definition of Free radical in Encyclopedia (1042 words) |
| In the upper atmosphere free radicals are produced through dissociation of the source molecules, particularly the normally unreactive chlorofluorocarbons by solar ultraviolet radiation or by reactions with other stratospheric constituents. |
| Free radicals play an important role in a number of biological processes, some of which are necessary for life, such as the intracellular killing of bacteria by neutrophil granulocytes. |
| Because free radicals are necessary for life, the body has a number of mechanisms to minimize free radical induced damage and to repair damage which does occur, such as the enzymes superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase. |
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