Evidence map›Paper›PMID 27566602›Full record

ArticleActa neuropathologica communications2016

Revisiting rodent models: Octodon degus as Alzheimer's disease model?

Johannes Steffen, Markus Krohn, Kristin Paarmann, Christina Schwitlick, Thomas Brüning, Rita Marreiros, Andreas Müller-Schiffmann, Carsten Korth, Katharina Braun, Jens Pahnke

Open access · goldAbstract readEvaluation Study
In one paragraph

Article in Acta neuropathologica communications, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.5field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 62 citations in OpenAlex.

  1. Article
  2. Age-Associated Behavioral Alterations in Laboratory-Housed Octodon degus.bioRxiv : the preprint server for biology · 2026
    Article
  3. Review
  4. Article
  5. Article
  6. Diabetic retinopathy and Alzheimer's disease: Convergence of the unfolded protein response in neurodegeneration.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Review
  7. Review
  8. Review
  9. Review
  10. Alzheimer's Disease Neuropathological Change in Aged Non-Primate Mammals.International journal of molecular sciences · 2024
    Review
  11. Frontiers in aging neuroscience · 2024
    Article
  12. Review
  13. In-silico structural analysis ofMolecular biology research communications · 2024
    Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Bridging the Gap: A Geroscience Primer for Neuroscientists With Potential Collaborative Applications.The journals of gerontology. Series A, Biological sciences and medical sciences · 2022
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 5 institutions in 2 countries.

Johannes SteffenUniversity of Lübeck (UzL), LIED, Lübeck, Germany.
Markus KrohnDepartment of Neuro-/Pathology, University of Oslo (UiO) & Oslo University Hospital (OUS), Oslo, Norway.
Kristin PaarmannUniversity of Lübeck (UzL), LIED, Lübeck, Germany.
Christina SchwitlickUniversity of Lübeck (UzL), LIED, Lübeck, Germany.
Thomas BrüningDepartment of Neuro-/Pathology, University of Oslo (UiO) & Oslo University Hospital (OUS), Oslo, Norway.
Rita MarreirosDepartment of Neuropathology, Heinrich Heine University Düsseldorf (HHU), Düsseldorf, Germany.
Andreas Müller-SchiffmannDepartment of Neuropathology, Heinrich Heine University Düsseldorf (HHU), Düsseldorf, Germany.
Carsten KorthDepartment of Neuropathology, Heinrich Heine University Düsseldorf (HHU), Düsseldorf, Germany.
Katharina BraunDepartment of Zoology/Developmental Neurobiology, Otto von Guericke University Magdeburg (OvGU), Magdeburg, Germany.
Jens PahnkeUniversity of Lübeck (UzL), LIED, Lübeck, Germany. jens.pahnke@medisin.uio.no.
University of Oslo · NOHeinrich Heine University Düsseldorf · DEOslo University Hospital · NOOtto-von-Guericke University Magdeburg · DEUniversity of Lübeck · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Alzheimer's disease primarily occurs as sporadic disease and is accompanied with vast socio-economic problems. The mandatory basic research relies on robust and reliable disease models to overcome increasing incidence and emerging social challenges. Rodent models are most efficient, versatile, and predominantly used in research. However, only highly artificial and mostly genetically modified models are available. As these 'engineered' models reproduce only isolated features, researchers demand more suitable models of sporadic neurodegenerative diseases. One very promising animal model was the South American rodent Octodon degus, which was repeatedly described as natural 'sporadic Alzheimer's disease model' with 'Alzheimer's disease-like neuropathology'. To unveil advantages over the 'artificial' mouse models, we re-evaluated the age-dependent, neurohistological changes in young and aged Octodon degus (1 to 5-years-old) bred in a wild-type colony in Germany. In our hands, extensive neuropathological analyses of young and aged animals revealed normal age-related cortical changes without obvious signs for extensive degeneration as seen in patients with dementia. Neither significant neuronal loss nor enhanced microglial activation were observed in aged animals. Silver impregnation methods, conventional, and immunohistological stains as well as biochemical fractionations revealed neither amyloid accumulation nor tangle formation. Phosphoepitope-specific antibodies against tau species displayed similar intraneuronal reactivity in both, young and aged Octodon degus.In contrast to previous results, our study suggests that Octodon degus born and bred in captivity do not inevitably develop cortical amyloidosis, tangle formation or neuronal loss as seen in Alzheimer's disease patients or transgenic disease models.

Indexed as

Alzheimer DiseaseDisease Models, AnimalOctodonAgingAmyloid beta-PeptidesAnimalsBlotting, WesternBrainFemaleHumansImmunohistochemistryMaleMice, Transgenictau ProteinsAmyloid beta-Peptidestau ProteinsAlzheimer’s diseaseAmyloid beta-PeptidesAnimal modelsNeurodegenerative diseasesNeuropathologyOctodon degusRodentiaTau proteins

Identifiers

PMID27566602
PMCPMC5002178
OpenAlexW2513378585

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.