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Free Radic Biol Med. 2002 May 1;32(9):797-803.

Oxidatively modified proteins in aging and disease.

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Department of Neurology and Neuroscience, Weill Medical College of Cornell University, New York Presbyterian Hospital, New York, NY 10021, USA.


There is a large body of evidence implicating oxidative damage in the pathogenesis of both normal aging and neurodegenerative diseases. Oxidative damage to proteins has been well established. Although there are a large number of potential oxidative modifications only a few have been systematically studied. The most frequently studied marker of oxidative damage to proteins is protein carbonyl groups. 3-Nitrotyrosine is thought to be a relatively specific marker of oxidative damage mediated by peroxynitrite. Increased concentrations of both protein carbonyls and 3-nitrotyrosine have been documented in both normal aging as well as in Alzheimer's disease (AD), Parkinson's disease (PD), and amyotrophic lateral sclerosis (ALS). These findings help to provide a rationale for trials of antioxidants in neurodegenerative diseases.

[Indexed for MEDLINE]

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