CYP46: a risk factor for Alzheimer's disease or a coincidence?

Abstract:

:Excess cholesterol is removed from the brain via hydroxylation mediated by cholesterol 24S-hydroxylase (CYP46). Although serum and cerebrospinal fluid (CSF) concentrations of 24S-hydroxycholesterol are altered during the progress of Alzheimer's disease, studies carried out to date in different populations on the association of CYP46 gene polymorphisms and risk of AD have been inconclusive. In this report, we analyzed CYP46 polymorphisms in 215 Polish AD cases and 173 healthy individuals. A fragment of CYP46 intron 2 was amplified by PCR reaction and sequenced. We discovered a new single nucleotide substitution in CYP46 intron 2, but found no difference in particular genotype or allele frequencies between AD patients and controls. However, the GG genotype of the known rs754203 polymorphic site might be a risk factor for AD, especially in APOE varepsilon4 carriers. Interestingly, in AD patients the rs754203 G allele was more frequent in males than in females. However, considering the extreme divergence of results obtained by different authors, a clear connection between the CYP46 gene and AD is questionable.

journal_name

Neurosci Lett

journal_title

Neuroscience letters

authors

Golanska E,Hulas-Bigoszewska K,Wojcik I,Rieske P,Styczynska M,Peplonska B,Pfeffer A,Luczywek E,Wasiak B,Gabryelewicz T,Religa D,Chodakowska-Zebrowska M,Barcikowska M,Sobow T,Liberski PP

doi

10.1016/j.neulet.2005.03.049

keywords:

subject

Has Abstract

pub_date

2005-07-22 00:00:00

pages

105-8

issue

1-2

eissn

0304-3940

issn

1872-7972

pii

S0304-3940(05)00356-3

journal_volume

383

pub_type

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