Alterations of cholesterol precursor levels in Alzheimer's disease.

Details

Serval ID
serval:BIB_1308830CA8C7
Type
Article: article from journal or magazin.
Collection
Publications
Title
Alterations of cholesterol precursor levels in Alzheimer's disease.
Journal
Biochimica et Biophysica Acta
Author(s)
Kölsch H., Heun R., Jessen F., Popp J., Hentschel F., Maier W., Lütjohann D.
ISSN
1388-1981
Publication state
Published
Issued date
2010
Peer-reviewed
Oui
Volume
1801
Number
8
Pages
945-950
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Abstract
Cerebral and extracerebral cholesterol metabolism are altered in Alzheimer's disease (AD) as indicated by reduced plasma levels of the cholesterol elimination products 24S-hydroxycholesterol, which is of cerebral origin, and of 27-hydroxycholesterol, which is formed extracerebrally. However, it has to be evaluated, if changes of cholesterol metabolism in the whole body or in the CNS are exclusively due to the altered elimination of cholesterol or are also due to altered de novo synthesis in AD. We investigated CSF and plasma levels of cholesterol and of its precursors lanosterol, lathosterol and desmosterol in AD patients and non-demented controls. We found CSF levels of cholesterol (p=0.011), absolute levels of all investigated cholesterol precursors (each p<0.001) and ratios of cholesterol precursors/cholesterol (each <0.01) to be lower in AD patients as compared to controls. In plasma, the absolute levels of lanosterol (p=0.026) and lathosterol (p<0.001) and the ratio of lathosterol/cholesterol (p=0.002) but none of the other investigated parameters were reduced in AD patients (p>0.1). Furthermore, ratios of desmosterol/lathosterol in CSF (p=0.023) and plasma (p=0.009) were higher in AD patients as compared to controls. Our data support the hypothesis that cholesterol metabolism is altered in AD and further suggest that especially cholesterol de novo synthesis within the CNS of AD patients might be reduced. These findings raise doubt on a beneficial effect of cholesterol lowering treatment in manifest AD.
Keywords
Aged, Aged, 80 and over, Alleles, Alzheimer Disease/blood, Alzheimer Disease/cerebrospinal fluid, Apolipoprotein E4/genetics, Case-Control Studies, Cholesterol/blood, Cholesterol/cerebrospinal fluid, Desmosterol/blood, Desmosterol/cerebrospinal fluid, Female, Gene Frequency, Humans, Lanosterol/blood, Lanosterol/cerebrospinal fluid, Male, Middle Aged, Models, Biological
Pubmed
Web of science
Create date
20/01/2012 11:14
Last modification date
20/08/2019 12:41
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