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• W2056598650 abstract "Sleep perturbations including fragmented sleep with frequent night-time awakenings and daytime naps are common in patients with Alzheimer’s disease (AD), and these daily disruptions are a major factor for institutionalization. The objective of this study was to investigate if sleep–wake patterns are altered in 5XFAD mice, a well-characterized double transgenic mouse model of AD which exhibits an early onset of robust AD pathology and memory deficits. These mice have five distinct human mutations in two genes, the amyloid precursor protein (APP) and Presenilin1 (PS1) engineered into two transgenes driven by a neuron-specific promoter (Thy1), and thus develop severe amyloid deposition by 4 months of age. Age-matched (4–6.5 months old) male and female 5XFAD mice were monitored and compared to wild-type littermate controls for multiple sleep traits using a non-invasive, high throughput, automated piezoelectric system which detects breathing and gross body movements to characterize sleep and wake. Sleep–wake patterns were recorded continuously under baseline conditions (undisturbed) for 3 days and after sleep deprivation of 4 h, which in mice produces a significant sleep debt and challenge to sleep homeostasis. Under baseline conditions, 5XFAD mice exhibited shorter bout lengths (14% lower values for males and 26% for females) as compared to controls (p < 0.001). In females, the 5XFAD mice also showed 12% less total sleep than WT (p < 0.01). Bout length reductions were greater during the night (the active phase for mice) than during the day, which does not model the human condition of disrupted sleep at night (the inactive period). However, the overall decrease in bout length suggests increased fragmentation and disruption in sleep consolidation that may be relevant to human sleep. The 5XFAD mice may serve as a useful model for testing therapeutic strategies to improve sleep consolidation in AD patients." @default.
• W2056598650 created "2016-06-24" @default.
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• W2056598650 date "2015-04-01" @default.
• W2056598650 modified "2023-10-18" @default.
• W2056598650 title "Increased fragmentation of sleep–wake cycles in the 5XFAD mouse model of Alzheimer’s disease" @default.
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• W2056598650 doi "https://doi.org/10.1016/j.neuroscience.2015.01.035" @default.
• W2056598650 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4361816" @default.
• W2056598650 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25637807" @default.
• W2056598650 hasPublicationYear "2015" @default.
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