Lipid class composition of membrane and raft fractions from brains of individuals with Alzheimer's disease.

ABSTRACT: Perturbation of the homeostasis of brain membrane lipids has been implicated in the pathomechanism of Alzheimer's disease (AD). The ?4 allele of the apolipoprotein E gene (APOE) confers an increased risk, in a dosage-dependent manner, for brain amyloid-? accumulation and the development of sporadic AD. An effect of the APOE genotype on brain lipid homeostasis may underlie the AD risk associated with the ?4 allele. In this research, we examined an effect of APOE ?4 on the lipid class composition of crude membranes and raft-enriched fractions of brains. We applied enzymatic reaction-based methods for the quantification of phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidic acid, and sphingomyelin. Our results indicate that brain lipid class composition was neither significantly altered in AD subjects nor affected by the presence of the APOE ?4 allele.

SUBMITTER: Kawatsuki A 

PROVIDER: S-EPMC6895748 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature