Ongoing Electroencephalographic Activity Associated with Cortical Arousal in Transgenic PDAPP Mice (hAPP V717F)
| Autor: | Giuseppe Bertini, Ditte Zerlang Christensen, Raffaele Ferri, Cristina Limatola, Sophie Dix, Claudio Babiloni, Wilhelmus Drinkenburg, Francesco Noé, Angelisa Frasca, Valeria Colavito, Régis Bordet, Jesper F. Bastlund, Paolo F. Fabene, Claudio Del Percio, Marina Bentivoglio, Gianluigi Forloni, Jan Torleif Pedersen, Susanna Lopez, Jill C. Richardson |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Male Phenylalanine awake passive state awake active state Mice Transgenic Electroencephalography (EEG) Alzheimer's disease (AD) PDAPP mice awake active state awake passive state cortical arousal Electroencephalography Brain mapping Arousal PDAPP mice 03 medical and health sciences Amyloid beta-Protein Precursor Mice 0302 clinical medicine Rhythm Alzheimer Disease cortical arousal medicine Animals Humans Electroencephalography (EEG) Cerebral Cortex Analysis of Variance Brain Mapping medicine.diagnostic_test Fourier Analysis Valine medicine.disease Brain Waves Mice Inbred C57BL Disease Models Animal 030104 developmental biology medicine.anatomical_structure Neurology Cerebral cortex Alzheimer's disease (AD) Mutation Wakefulness Neurology (clinical) Analysis of variance Alzheimer's disease Psychology Neuroscience 030217 neurology & neurosurgery |
| Zdroj: | Current Alzheimer research. 15(3) |
| ISSN: | 1875-5828 |
| Popis: | Background: It has been shown that theta (6-10 Hz) and delta (1-6 Hz) ongoing electroencephalographic (EEG) rhythms revealed variations in the cortical arousal in C57 Wild Type (WT) mice during cage exploration (active condition) compared to awake quiet behavior (passive condition; IMI PharmaCog project, www.pharmacog.eu). Objective: The objective was to test if these EEG rhythms might be abnormal in old PDAPP mice modeling Alzheimer's disease (AD) with a hAPP Indiana V717F mutation (They show abnormal neural transmission, cognitive deficits, and brain accumulation of Aβ1-42). Methods: Ongoing EEG rhythms were recorded by a frontoparietal bipolar channel in 15 PDAPP and 23 WT C57 male mice (mean age of 22.8 months ±0.4 and 0.3 standard error, respectively). EEG absolute power (density) was calculated. Frequency and amplitude of individual delta and theta frequency (IDF and ITF) peaks were considered during passive and active states in the wakefulness. Results: Compared with the WT group, the PDAPP group showed higher frequency of the IDF during the passive condition and lower frequency of the ITF during the active state. Furthermore, the WT but not PDAPP group showed significant changes in the frontoparietal EEG power (IDF, ITF) during active over passive state. Conclusion: PDAPP mice were characterized by less changes in the brain arousal during an active state as revealed by frontoparietal EEG rhythms. Future studies will have to cross-validate the present results on large animal groups, clarify the neurophysiological underpinning of the effect, and test if the disease modifying drugs against AD amyloidosis normalize those candiate EEG biomarkers in PDAPP mice |
| Databáze: | OpenAIRE |
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