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4‐Hydroxynonenal‐Derived Advanced Lipid Peroxidation End Products Are Increased in Alzheimer's Disease
Abstract
Abstract: Recent studies have demonstrated oxidative damage is one of the salient features of Alzheimer's disease (AD). In these studies, glycoxidation adduction to and direct oxidation of amino acid side chains have been demonstrated in the lesions and neurons of AD. To address whether lipid damage may also play an important pathogenic role, we raised rabbit antisera specific for the lysine‐derived pyrrole adducts formed by lipid peroxidation‐derived 4‐hydroxynonenal (HNE). These antibodies were used in immunocytochemical evaluation of brain tissue from AD and age‐matched control patients. HNE‐pyrrole immunoreactivity not only was identified in about half of all neurofibrillary tangles, but was also evident in neurons lacking neurofibrillary tangles in the AD cases. In contrast, few senile plaques were labeled, and then only the dystrophic neurites were weakly stained, whereas the amyloid‐β deposits were unlabeled. Age‐matched controls showed only background HNE‐pyrrole immunoreactivity in hippocampal or cortical neurons. In addition to providing further evidence that oxidative stress‐related protein modification is a pervasive factor in AD, the known neurotoxicity of HNE suggests that lipid peroxidation may also play a role in the neuronal death in AD that underlies cognitive deficits.
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Metadata
- Authors
- Sayre, L. M., Zelasko, D. A., Harris, P. L. R., Perry, G., Salomon, R. G., & Smith, M. A.
- Venue
- Journal of Neurochemistry
- Publisher
- Wiley
- Published
- 1997-05
- Volume
- 68
- Issue
- 5
- Pages
- 2092-2097
- ISSN
- 0022-3042 (ISSN-L)
- 1471-4159
- OpenAlex
- W2069787626
- Cited by
- 1,007
- References
- 3
- FWCI
- 26.41
- Type
- journal article
- Language
- en
- Open access
- closed
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