Abstract:
:The epsilon4 allele of the apolipoprotein E gene (APOE) is associated with sporadic and familial late-onset Alzheimer's disease (AD). Oxidative stress is believed to play an important role in neuronal dysfunction and cell death in AD. We now provide evidence that in the hippocampus of AD, the level of thiobarbituric acid-reactive substances (TBARS) and the APOE genotype are linked. Within AD cases, the levels of TBARS were found to be higher among epsilon4 carriers while the apoE protein concentrations were lower. The relationship between the levels of TBARS and apoE proteins was corroborated by the results from the APOE-deficient mice, in which the levels of TBARS were higher than those in wild-type mice. Among AD cases, tissues from patients with the epsilon4 allele of APOE displayed lower activities of catalase and glutathione peroxidase and lower concentration of glutathione than tissues from patients homozygous for the epsilon3 allele of APOE. Together these data demonstrate that, in AD, the epsilon4 allele of APOE is associated with higher oxidative insults.
journal_name
Neurobiol Disjournal_title
Neurobiology of diseaseauthors
Ramassamy C,Averill D,Beffert U,Theroux L,Lussier-Cacan S,Cohn JS,Christen Y,Schoofs A,Davignon J,Poirier Jdoi
10.1006/nbdi.1999.0273keywords:
subject
Has Abstractpub_date
2000-02-01 00:00:00pages
23-37issue
1eissn
0969-9961issn
1095-953Xpii
S0969-9961(99)90273-5journal_volume
7pub_type
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