Open AccessComparison of male and female patients with amnestic mild cognitive impairment: Hippocampal hyperactivity and pattern separation memory performance
Author(s) -
CoronaLong Caitlin A.,
Tran Tammy T.,
Chang Elizabeth,
Speck Caroline L.,
Gallagher Michela,
Bakker Arnold
Publication year - 2020
Publication title -
alzheimer's and dementia: diagnosis, assessment and disease monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.497
H-Index - 37
ISSN - 2352-8729
DOI - 10.1002/dad2.12043
Subject(s) - hippocampal formation , episodic memory , memory impairment , dentate gyrus , hippocampus , cognitive impairment , psychology , cognition , audiology , neuroscience , alzheimer's disease , disease , medicine
Recent studies have suggested that sex confers a differential risk in the incidence and prevalence of Alzheimer's disease (AD) thought to be the result of the increased lifespan of women compared to men. However, other factors may contribute to risk beyond the effect of increased lifespan. Methods This study examined the role of sex in hippocampal hyperactivity localized to the dentate gyrus (DG)/CA3 subregion of the hippocampus and associated episodic memory impairment, considered a characteristic feature of AD in patients with amnestic mild cognitive impairment (aMCI). Results While participants with aMCI showed decreased memory performance and increased activation in the DG/CA3 when compared to controls, no significant sex‐related differences in performance or activation were observed. Discussion Although other factors may contribute to sex differences in the prevalence of AD these findings show that no sex differences are observed in hippocampal dysfunction characteristic of the aMCI phase of AD.