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- W2029115752 abstract "In this study we used immunohistochemistry and two-dimensional fingerprinting of oxidatively modified proteins (two-dimensional Oxyblot) together to investigate protein carbonyl formation in the Alzheimer's disease brain. Increased protein oxidation was detected in sections from the hippocampus and parahippocampal gyrus, superior and middle temporal gyri of six Alzheimer's disease and six age-matched control human subjects, but not in the cerebellum. In two brain regions severely affected by Alzheimer's disease pathology, prominent protein carbonyl immunoreactivity was localized in the cytoplasm of neurons without visual pathomorphological changes and degenerating neurons, suggesting that intracellular proteins might be significantly affected by oxidative modifications. Following two-dimensional electrophoresis the positions of some individual proteins were identified using specific antibodies, and immunoblot analysis for protein carbonyls was performed. These studies demonstrated the presence of protein carbonyl immunoreactivity in beta-tubulin, beta-actin and creatine kinase BB in Alzheimer's disease and control brain extracts. Protein carbonyls were undetectable in spots matching glial fibrillary acidic protein and tau isoforms. Specific protein carbonyl levels in beta-actin and creatine kinase BB were significantly higher in Alzheimer's disease than in control brain extract. beta-Tubulin did not demonstrate a significant increase in specific protein carbonyl content in Alzheimer's disease brains. We suggest that oxidative stress-induced injury may involve the selective modification of different intracellular proteins, including key enzymes and structural proteins, which precedes and may lead to the neurofibrillary degeneration of neurons in the Alzheimer's disease brain." @default.
- W2029115752 created "2016-06-24" @default.
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- W2029115752 date "2001-03-01" @default.
- W2029115752 modified "2023-10-11" @default.
- W2029115752 title "Protein oxidation in the brain in Alzheimer's disease" @default.
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- W2029115752 doi "https://doi.org/10.1016/s0306-4522(00)00580-7" @default.
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