Cited by 84Alzheimer's disease research and treatmentsEpilepsy research and treatmentDementia and Cognitive Impairment Research

Seizure susceptibility in the APP/PS1 mouse model of Alzheimer’s disease and relationship with amyloid β plaques

Reyes-Marin, Karen E., Nuñez, Angel·2017·Brain Research

Abstract

Alzheimer's disease is a common age associated neurodegenerative disorder associated with an elevated risk of seizures that may be fundamentally connected to cognitive dysfunction. We used 4-9month-old mice of the APP/PS1 mouse model of Alzheimer's disease to study the presence of epileptiform-like discharges and to establish if the amyloid-β plaques affect their generation. The EEG of the APP/PS1 transgenic mice revealed a higher incidence of epileptiform-like discharges i.e. seizure events (interictal spikes, sharp waves, or polyspikes) than in the controls. Also, APP/PS1 mice showed a lower latency to evoke seizure events than in the control animals when pentylenetetrazole (60mg/kg; i.p.) was injected. Moreover, physostigmine injection (1mg/kg; i.p.) also increased the frequency of spontaneous epileptiform-like discharges in the APP/PS1 mice. We also found a correlation between the frequency of epileptiform-like discharges and the number of amyloid-β plaques. Application of N-(2-chloroethyl)-N-ethyl-bromobenzylamine (50mg/kg) generated amyloid-β plaques in the cortex and seizure activity appeared. Taken together, these data indicate that deposits of amyloid-β plaques may be responsible for the epileptiform-like discharges recorded in the APP/PS1 mice and could be responsible for the elevated risk for seizures of Alzheimer's patients.

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Crossref · 10.1016/j.brainres.2017.09.026

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Authors
Reyes-Marin, K. E., & Nuñez, A.
Affiliations
Universidad Autónoma de Madrid (ES)
Venue
Brain Research
Publisher
Elsevier BV
Published
2017-12
Volume
1677
Pages
93-100
ISSN
0006-8993 (ISSN-L)
OpenAlex
W2760503366
Cited by
84
References
50
Citations by year
2026: 8 · 2025: 8 · 2024: 16 · 2023: 6 · 2022: 8 · 2021: 25 · 2020: 4 · 2019: 8 · 2018: 1
FWCI
2.63
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Ministerio de Economia y Competitividad
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Epilepsy research and treatment
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
Alzheimer's disease, seizure susceptibility, APP/PS1 mice, amyloid plaques, epileptiform discharges, EEG, pentylenetetrazole, physostigmine, amyloid-beta deposition
MeSH terms
Electrocorticography, Alzheimer Disease, Animals, Benzylamines, Cerebral Cortex, Disease Models, Animal, Disease Susceptibility, Female, Male, Mice, Inbred C57BL, Mice, Transgenic, Pentylenetetrazole, Physostigmine, Seizures, Plaque, Amyloid

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