Polymorphism in apoA1 Influences High-Density Lipoprotein Cholesterol Levels but Is Not a Major Risk Factor of Alzheimer’s Disease

Autor: Mohamed Ali Smach, Hayet Edziri, Bassem Charfeddine, Leila Ben Othman, Turkia Lammouchi, Afef Ltaief, Souhir Nafati, Hedi Dridi, Soufien Bennamou, Khalifa Limem
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: Dementia and Geriatric Cognitive Disorders Extra, Vol 1, Iss 1, Pp 249-257 (2012)
Druh dokumentu: article
ISSN: 1664-5464
DOI: 10.1159/000329910
Popis: 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). Aim: 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. Conclusion: Our data support the observation that apoA1 polymorphism influences cholesterol metabolism and Aβ42 deposition in the brain.
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