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http://dx.doi.org/10.5012/bkcs.2007.28.1.077

Oxidative Modification of Neurofilament-L by the Cytochrome c and Hydrogen Peroxide System  

Kang, Jung-Hoon (Department of Genetic Engineering, Cheongju University)
Publication Information
Bulletin of the Korean Chemical Society / v.28, no.1, 2007 , pp. 77-80 More about this Journal
Abstract
As neurofilament proteins are major cytoskeletal components of neuron, abnormality of neurofilament is proposed in brain with neurodegenerative disorders such as Parkinson's disease (PD). Since oxidative stress might play a critical role in altering normal brain proteins, we investigated the oxidative modification of neurofilament-L (NF-L) induced by the reaction of cytochrome c with H2O2. When NF-L was incubated with cytochrome c and H2O2, the protein aggregation was increased in cytochrome c and H2O2 concentrationsdependent manner. Radical scavengers, azide, formate and N-acetyl cysteine, prevented the aggregation of NFL induced by the cytochrome c/H2O2 system. The formations of carbonyl group and dityrosine were obtained in cytochrome c/H2O2-mediated NF-L aggregates. Iron specific chelator, desferoxamine, prevented the cytochrome c/H2O2 system-mediated NF-L aggregation. These results suggest that the cytochrome c/H2O2 system may be related to abnormal aggregation of NF-L which may be involved in the pathogenesis of PD and related disorders.
Keywords
Neurofilament-L; Cytochrome c; Oxidative stress; Parkinson's disease;
Citations & Related Records
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Times Cited By Web Of Science : 3  (Related Records In Web of Science)
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