Reduced firing rates of pyramidal cells in the frontal cortex of APP/PS1 can be restored by acute treatment with levetiracetam

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Publication year
2020Source
Neurobiology of Aging, 96, (2020), pp. 79-86ISSN
Publication type
Article / Letter to editor

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Organization
Neuroinformatics
Medical Imaging
Journal title
Neurobiology of Aging
Volume
vol. 96
Page start
p. 79
Page end
p. 86
Subject
Neuroinformatics; Radboudumc 1: Alzheimer`s disease DCMN: Donders Center for Medical NeuroscienceAbstract
In recent years, aberrant neural oscillations in various cortical areas have emerged as a common physiological hallmark across mouse models of amyloid pathology and patients with Alzheimer's disease. However, much less is known about the underlying effect of amyloid pathology on single cell activity. Here, we used high-density silicon probe recordings from frontal cortex area of 9-month-old APP/PS1 mice to show that local field potential power in the theta and beta band is increased in transgenic animals, whereas single-cell firing rates, specifically of putative pyramidal cells, are significantly reduced. At the same time, these sparsely firing pyramidal cells phase-lock their spiking activity more strongly to the ongoing theta and beta rhythms. Furthermore, we demonstrated that the antiepileptic drug, levetiracetam, counteracts these effects by increasing pyramidal cell firing rates in APP/PS1 mice and uncoupling pyramidal cells and interneurons. Overall, our results highlight reduced firing rates of cortical pyramidal cells as a pathophysiological phenotype in APP/PS1 mice and indicate a potentially beneficial effect of acute levetiracetam treatment.
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- Electronic publications [101944]
- Faculty of Medical Sciences [80231]
- Faculty of Science [32102]
- Open Access publications [70663]
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