4-Hydroxynonenal immunoreactivity is increased in human hippocampus after global ischemia
McKracken, Eileen, Graham, David I., Nilsen, Margaret, Stewart, Janice, Nicoll, James A.R. and Horsburgh, Karen (2001) 4-Hydroxynonenal immunoreactivity is increased in human hippocampus after global ischemia. Brain Pathology, 11, (4), 414-421.
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Description/Abstract
Oxidative stress and lipid peroxidation may contribute to the pathology of neurodegenerative disorders such as Alzheimer’s disease (AD) and cerebral ischemia. 4-Hydroxynonenal (4-HNE) is a toxic by-product of lipid peroxidation, and immunoreactivity to 4-HNE has been used to examine lipid peroxidation in the pathogenesis of AD and ischemia. This study sought to determine 1) if there are cellular alterations in 4-HNE immunoreactivity in the human hippocampus after global ischemia, and 2) whether possession of an apolipoprotein E (APOE) e4 allele influenced the extent of 4-HNE immunoreactivity. 4-HNE immunoreactivity was assessed semi-quantitatively in the temporal lobe of a group of controls (n = 44) and in a group of patients who had an episode of global ischemia as a result of a cardiorespiratory arrest and subsequently died (n = 56, survival ranged from 1hr to 42days). There was minimal cellular 4-HNE immunoreactivity in the control group. However, compared to controls, 4-HNE immunoreactivity was significantly increased in neurons (p , 0.0002) and glia (p , 0.0001) in the hippocampal formation after global ischemia. Possession of an APOE e4 allele did not influence the extent of neuronal or glial 4-HNE immunostaining in the control or global ischemia group. There was a significant negative correlation between the extent of neuronal 4-HNE immunoreactivity with survival period after global ischemia (r2 = 0.0801; p , 0.036) and a significant positive correlation between the extent of glial 4-HNE immunoreactivity and survival after global ischemia (r2 = 0.2958; p , 0.0001). The data indicate a marked increase in neuronal and glial 4-HNE. This substantiates a role for lipid peroxidation in the pathogenesis of cerebral ischemia. There was no indication that APOE genotype influenced the extent of 4-HNE immunoreactivity.
| Item Type: | Article |
|---|---|
| Related URLs: | |
| Subjects: | R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry |
| Divisions: | University Structure - Pre August 2011 > School of Medicine > Clinical Neurosciences |
| Item ID: | 27657 |
| Date Deposited: | 27 Apr 2006 |
| Last Modified: | 02 Mar 2012 12:46 |
| Contributors: | McKracken, Eileen (Author) Graham, David I. (Author) Nilsen, Margaret (Author) Stewart, Janice (Author) Nicoll, James A.R. (Author) Horsburgh, Karen (Author) |
| Date: | 2001 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/27657 |
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