Abstract
Previous studies show increased levels of lipid peroxidation and neurotoxic by-products of lipid peroxidation including 4-hydroxynonenal (HNE) and acrolein in vulnerable regions of the Alzheimer's disease (AD) brain. To determine if lipid peroxidation occurs early in progression of AD, we analyzed levels of HNE and acrolein in the hippocampus/parahippocampal gyrus (HPG), superior and middle temporal gyrus (SMTG) and cerebellum (CER) of 7 subjects with Mild Cognitive Impairment (MCI), six subjects with early AD (EAD) and sevem age-matched control subjects using liquid chromatography electrospray ionization tandem mass spectrometry (LC/ESI/MS/MS). Our data show that there is a statistically significant (P < 0.05) increase in HNE in HPG, SMTG and CER in MCI compared to age-matched control subjects. Specimens of SMTG also showed a significant increase in levels of acrolein in MCI. Comparison of EAD and control subjects showed a statistically significant increase in HNE in HPG and SMTG and a significant increase in acrolein in all three brain regions studied. We did not observe any statistically significant differences between MCI and EAD specimens. These results suggest that lipid peroxidation occurs early in the pathogenesis of AD.
| Original language | English |
|---|---|
| Pages (from-to) | 1094-1099 |
| Number of pages | 6 |
| Journal | Neurobiology of Aging |
| Volume | 27 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 2006 |
Bibliographical note
Funding Information:Supported by NIH grants 5-P01-AG05119 and 5-P50-AG05144, and by a grant from the Abercrombie Foundation. The authors thank Ms. Paula Thomason for technical and editorial assistance, and Ms. Sonya Anderson for subject demographic data.
Keywords
- Alzheimer's disease
- Early Alzheimer's disease
- Lipid peroxidation
- Mild Cognitive Impairment
- Oxidative stress
ASJC Scopus subject areas
- General Neuroscience
- Aging
- Clinical Neurology
- Developmental Biology
- Geriatrics and Gerontology