title: Spatial learning and memory impairment and increased locomotion in a transgenic amyloid precursor protein mouse model of Alzheimer's disease.
abstract: This study provides an examination of spatial learning and a behavioral assessment of irritability and locomotion in TgCRND8 mice, an amyloid precursor protein transgenic model of Alzheimer's disease. Performance was assessed using the Barnes maze, the touch escape test, and an open-field test. While past research focused primarily on 2-5-month-old TgCRND8 mice, the present study used an older age cohort (9-month-old female mice), in addition to a 4-month-old cohort of both transgenic (Tg) and wildtype female mice. Both younger and older Tg mice displayed poor spatial learning in the Barnes maze task compared to their wildtype littermates, as demonstrated by significantly longer latencies and more errors both during acquisition and at a 2-week retest. No differences in irritability were found between Tg and control mice in the younger cohort; however, older Tg mice displayed significantly higher irritability compared with wildtype littermates, as measured by the touch escape test. Additionally, Tg mice of both age cohorts showed increased locomotion and slowed habituation during a 60-min open-field test over 3 days of testing. These results demonstrate that TgCRND8 mice show significant deficits in spatial and nonspatial behavioral tasks at advanced stages of amyloid pathology.
authors: Department of Psychological Sciences, 210 McAlester Hall, University of Missouri, Columbia, MO 65211, USA.
authors: J M
authors: JM
authors: Walker
authors: S W
authors: SW
authors: Fowler
authors: D K
authors: DK
authors: Miller
authors: A Y
authors: AY
authors: Sun
authors: G A
authors: GA
authors: Weisman
authors: W G
authors: WG
authors: Wood
authors: G Y
authors: GY
authors: Sun
authors: A
authors: A
authors: Simonyi
authors: T R
authors: TR
authors: Schachtman
mesh_terms: D000367:Age Factors; D000544:Alzheimer Disease / Q000150:complications* / Q000235:genetics; D016564:Amyloid beta-Protein Precursor / Q000235:genetics; D000704:Analysis of Variance; D000818:Animals; D001007:Anxiety / Q000175:diagnosis / Q000209:etiology / Q000235:genetics; D004924:Escape Reaction / Q000502:physiology; D005106:Exploratory Behavior / Q000502:physiology; D005260:Female; D006801:Humans; D007859:Learning Disabilities / Q000209:etiology* / Q000235:genetics; D008124:Locomotion / Q000235:genetics / Q000502:physiology*; D018782:Maze Learning / Q000502:physiology; D008569:Memory Disorders / Q000209:etiology* / Q000235:genetics; D051379:Mice; D008810:Mice, Inbred C57BL; D008822:Mice, Transgenic; D009154:Mutation / Q000235:genetics; D010812:Physical Stimulation; D011930:Reaction Time / Q000235:genetics; D012153:Retention, Psychology / Q000502:physiology; D013028:Space Perception / Q000502:physiology*; D018709:Statistics, Nonparametric; D013997:Time Factors
chemical_list: D016564:Amyloid beta-Protein Precursor