Cited by 142Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Gene Dosage Dependent Aggravation of the Neurological Phenotype in the 5XFAD Mouse Model of Alzheimer’s Disease

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Richard, Bernhard Clemens, Kurdakova, Anastasiia, Baches, Sandra, Bayer, Thomas A., Weggen, Sascha, Wirths, Oliver·2015·Journal of Alzheimer’s Disease

Abstract

In the present report, we extend previous findings in the 5XFAD mouse model with regard to a characterization of behavioral deficits and neuropathological alterations. We demonstrate that these mice develop a robust age-dependent motor phenotype and spatial reference memory deficits when bred to homozygosity, leading to a strongly reduced age of onset of behavioral symptoms. At postnatal day sixteen, abundant AβPP was detected in subiculum and cortical pyramidal neurons. From six weeks on, intraneuronal Aβ could be detected which was much more abundant in homozygous mice. The same gene-dosage effect was seen on memory and motor deficits. While at 2 months of age neither heterozygous nor homozygous 5XFAD mice show any neurological phenotype except for alterations in anxiety behavior, at 5 months they were clearly evident. Interestingly, despite abundant motor deficiencies, homozygous 5XFAD mice were able to perform the acquisition training of the Morris water maze task with no difference in the swimming performance between the groups. Therefore the aggravated spatial memory and spatial reference memory deficits of the homozygous mice correlated with the elevated soluble and insoluble Aβ levels. Homozygous 5XFAD mice represent a model with several advantages in comparison to the heterozygous mice, developing amyloid pathology much more rapidly together with a neurological phenotype. These advantages allow reducing the number of animals for Alzheimer's disease research.

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Crossref · 10.3233/jad-143120

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  • In 5XFAD pathology, spine loss (4-9 months) occurs subsequent to cognitive dysfunction (3-6 months) and Aβ plaque formation (two months).

    “An interesting observation in the progression of 5XFAD pathology is that spine loss (4–9 months) [62] occurs subsequent to cognitive dysfunction (3–6 months) [35,63,64,65,66] and Aβ plaque formation (two months) [67].”

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Authors
Richard, B. C., Kurdakova, A., Baches, S., Bayer, T. A., Weggen, S., & Wirths, O.
Affiliations
  • Universitätsmedizin Göttingen (DE)
  • Heinrich Heine University Düsseldorf (DE)
Corresponding author
Wirths, Oliver
Venue
Journal of Alzheimer’s Disease
Published
2015-04-13
Volume
45
Issue
4
Pages
1223-1236
ISSN
  • 1387-2877 (ISSN-L)
  • 1875-8908
OpenAlex
W1555936968
Cited by
142
References
51
Citations by year
2026: 15 · 2025: 17 · 2024: 14 · 2023: 24 · 2022: 30 · 2021: 18 · 2020: 11 · 2019: 3 · 2018: 2 · 2017: 3 · 2016: 3 · 2015: 2
FWCI
2.46
Type
journal article
Language
en
Locations
  • Journal of Alzheimer s Disease (publishedVersion)
  • PubMed (publishedVersion)
  • GoeScholar The Publication Server of the Georg-August-Universität Göttingen (Georg-August-Universität Göttingen) (submittedVersion, cc-by)
Funders
Alzheimer Forschung Initiative
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
5xFAD mice, Alzheimer's disease
MeSH terms
Aging, Alzheimer Disease, Animals, Body Weight, Brain, Disease Models, Animal, Humans, Mice, Inbred C57BL, Mice, Transgenic, Motor Activity, Neurons, Phenotype, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Age of Onset, Gene Dosage, Maze Learning, Presenilin-1, Spatial Memory

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