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Aging process free radicals

Ultraviolet Aging. Nylon parts exposed to sunlight and uv rays undergo a similar free-radical aging process. Again, this can be reduced with appropriately stabilized materials. [Pg.270]

The modification of amino acids in proteins and peptides by oxidative processes plays a major role in the development of disease and in aging (Halliwell and Gutteridge, 1989, 1990 Kim et al., 1985 Tabor and Richardson, 1987 Stadtman, 1992). Tissue damage through free radical oxidation is known to cause various cancers, neurological degenerative conditions, pulmonary problems, inflammation, cardiovascular disease, and a host of other problems. Oxidation of protein structures can alter activity, inhibit normal protein interactions, modify amino acid side chains, cleave peptide bonds, and even cause crosslinks to form between proteins. [Pg.23]

Such reactions have only been investigated on their role in the processes of ageing and carcinogenesis to a large extent (Dizdaroglu 1991), their effects on environmental contaminants and organisms have not been fully realized. Because of the short time and difficulties in chemical analyses for transitory presence of free radicals, relationship between free radical concentrations and effects on pollutants or natural microorganisms has not been fully established. It is clear that further... [Pg.179]

In the present work, we use quantitative solid-state 13C NMR spectroscopy to study the polymerization process of multiacrylates and the effects of thermal history/aging on the free radical life in polymultiacrylates. [Pg.28]

Oxygen involved in metabohc processes are prone to form free radicals, which are thought to cause damage to cells and possibly be associated with cancer and aging. [Pg.228]

Benefits Japanese studies in the 1980s showed that the polyphenol components had antioxidant properties similar to superoxide dismutase (SOD), an enzyme that is a free radical scavenger and is thought to slow down the ageing process. The herb has less tannin than oriental tea, so tastes less bitter, and it is caffeine free. [Pg.330]

Boveris A, Costa LE, Cadenas E. 1999. The mitochondrial production of oxygen radicals and cellular aging. In Cadenas E, Packer L, Eds. Understanding the Process of Aging—The Role of Mitochondria, Free Radicals and Antioxidants. New York Marcel Dekker, Inc pp. 1-16. [Pg.104]

My recommendation with regard to healthy aging is to eat less food, thus reducing the likelihood of making oxygen-free radicals, and to enhance the anti-oxidant processes you inherited... [Pg.154]

The Internet is bursting with claims that pills and drinks containing extracts of the Ginkgo biloba plant may neutralize free radicals, dilate the blood vessels in your brain, make you smarter, and slow the aging process. How The claim is that Gingko biloba increases the function of acetylcholine neurons and thereby enhances memory and arouses and improves attentional ability. [Pg.158]


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See also in sourсe #XX -- [ Pg.226 ]




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