Journal
JOURNAL OF ALZHEIMERS DISEASE
Volume 24, Issue 1, Pages 77-84Publisher
IOS PRESS
DOI: 10.3233/JAD-2011-101425
Keywords
Alzheimer's disease; lymphocytes; mitochondria; 3-nitrotyrosine; oxidative stress; protein-bound 4 hydroxy-2 trans nonenal; protein carbonyls
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Funding
- National Institutes of Health [AG-05119]
- PRIN
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Alzheimer's disease (AD) is histopathologically characterized by the presence of senile plaques, neurofibrillary tangles, and synapse loss. The main component of senile plaques is amyloid beta-peptide (A beta), which has been shown to induce oxidative stress in in vitro and in vivo studies. AD is associated with elevated levels of oxidative damage in brain and peripheral lymphocytes. Further A beta has been found to be accumulated in mitochondria, which might contribute to the reported alterations in the mitochondrial morphology, and impaired mitochondrial energy metabolism in AD brain. Biomarkers are desperately needed for earlier diagnosis of AD and to monitor efficacy of new therapies. Hence, in the present study we show that markers of oxidative damage are elevated in mitochondria isolated from AD lymphocytes suggesting that these oxidative stress indices potentially could serve as a viable biomarker for AD.
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