Polymorphism in apoA1 Influences High-Density Lipoprotein Cholesterol Levels but Is Not a Major Risk Factor of Alzheimer's Disease.
BACKGROUND
Apolipoprotein A1 (apoA1) is the major apolipoprotein constituent of the high-density lipoprotein (HDL) and is involved in reverse cholesterol transport. Variation in the apoA1 gene might influence the function of the protein and, thus, brain cholesterol metabolism, leading to an increased risk for Alzheimer's disease (AD).


OBJECTIVE
In the current report, we investigated the role of the functional apoA1 polymorphism (-75 G/A) as a genetic risk factor for AD in a Tunisian population.


METHODS
173 AD patients and 150 healthy controls were studied.


RESULTS
No association was found between this genetic variation in apoA1 gene and the risk of AD. The presence of the (-75 G/A) A allele appeared, however, to be associated with lower levels of cerebrospinal fluid Aβ42 and HDL cholesterol levels in sera.


CONCLUSIONS
Our data support the observation that apoA1 polymorphism influences cholesterol metabolism and Aβ42 deposition in the brain.
Department of Biochemistry, Faculty of Medicine of Sousse, Tunisia.
Mohamed Ali
MA
Smach
Hayet
H
Edziri
Bassem
B
Charfeddine
Leila
L
Ben Othman
Turkia
T
Lammouchi
Afef
A
Ltaief
Souhir
S
Nafati
Hedi
H
Dridi
Soufien
S
Bennamou
Khalifa
K
Limem