title: Apolipoprotein E isoform-dependent effects on anxiety and cognition in female TR mice.
abstract: Compared with apoE3, apoE4 is associated with increased risk to develop age-related cognitive decline, particularly in women. In this study, young, middle-aged, and old female mice expressing human apoE under control of the mouse apoE promoter were behaviorally analyzed. Cognitive performance in the water maze decreased with age in all mice. Compared with apoE2 and apoE3 mice, apoE4 mice showed better cognitive performance and higher measures of anxiety than apoE2 and apoE3 mice. Measures of anxiety correlated with cognitive performance in the water maze and passive avoidance tests and might have contributed to the enhanced cognitive performance of the apoE4 mice. ApoE4 mice showed better water maze learning and higher cortical apoE levels than mice expressing apoE4 in astrocytes under control of the GFAP promoter. This was not seen in apoE3 mice. There were no line differences in either genotype in spatial memory retention in the probe trial following the last day of hidden platform training. Thus, the promoter used to express apoE4 critically modulates its effects on brain function.
authors.affiliation: Department of Behavioral Neuroscience, Oregon Health and Science University, 8131 SW Sam Jackson Park Road, Portland, OR 97239, USA.
authors.forename: Jessica A
authors.initials: JA
authors.lastname: Siegel
authors.forename: Gwendolen E
authors.initials: GE
authors.lastname: Haley
authors.forename: Jacob
authors.initials: J
authors.lastname: Raber
mesh_terms: D000375:Aging / Q000235:genetics*; D000818:Animals; D001007:Anxiety / Q000150:complications / Q000235:genetics*; D001057:Apolipoproteins E / Q000235:genetics*; D001921:Brain / Q000503:physiopathology*; D003071:Cognition; D003072:Cognition Disorders / Q000150:complications / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D051379:Mice; D008822:Mice, Transgenic; D020033:Protein Isoforms
chemical_list: D001057:Apolipoproteins E; D020033:Protein Isoforms
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