Genetic Interaction of APOE and FGF1 is Associated with Memory Impairment and Hippocampal Atrophy in Alzheimer's Disease.

ABSTRACT: The APOE and fibroblast growth factor 1 (FGF1) have both been associated with amyloid ? accumulation and neurodegeneration. Investigation the effect of APOE-FGF1 interactions on episodic memory (EM) deficits and hippocampus atrophy (HA) might elucidate the complex clinical-pathological relationship in Alzheimer's disease (AD). EM performance and hippocampal volume (HV) were characterized in patients with mild AD based on APOE-?4 carrier status (APOE-?4 carriers versus non-carriers) and FGF1 single nucleotide polymorphism (FGF1-rs34011-GG versus FGF1-rs34011-A-allele carriers). The clinical-pathological relationships within each genotypic group (?4+/GG-carrier, ?4+/A-allele-carrier, ?4-/GG-carrier and ?4-/A-allele-carrier) were analyzed. There were no significant differences between the FGF1-rs34011-GG and FGF1-rs34011-A-allele carriers for the level of EM performance or HV (p> 0.05). The bilateral HV was significantly smaller and EM impairment was significantly worse in ?4+/GG-carrier than in ?4-/A-allele-carrier, and an interaction effect of APOE (APOE-?4 carriers versus non-carriers) with FGF1 (FGF1-rs34011-GG versus FGF1-rs34011-A-allele carriers) predicted EM impairment (F4,92= 3.516, p= 0.018) and structural changes in voxel-based morphometry. Our data shows that concurrent consideration of APOE and FGF1 polymorphisms might be required to understand the clinical-pathological relationship in AD.

SUBMITTER: Chang YT 

PROVIDER: S-EPMC6538224 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature