Cited by 135Alzheimer's disease research and treatmentsAmyotrophic Lateral Sclerosis ResearchNeuroinflammation and Neurodegeneration Mechanisms

Early axonopathy preceding neurofibrillary tangles in mutant tau transgenic mice

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Leroy, Karelle, Bretteville, Alexis, Schindowski, Katharina, Gilissen, Emmanuel, Authelet, Michèle, De Decker, Robert, Yilmaz, Zehra, Buée, Luc +1 more·2007·The American Journal of Pathology

Abstract

Neurodegenerative diseases characterized by brain and spinal cord involvement often show widespread accumulations of tau aggregates. We have generated a transgenic mouse line (Tg30tau) expressing in the forebrain and the spinal cord a human tau protein bearing two pathogenic mutations (P301S and G272V). These mice developed age-dependent brain and hippocampal atrophy, central and peripheral axonopathy, progressive motor impairment with neurogenic muscle atrophy, and neurofibrillary tangles and had decreased survival. Axonal spheroids and axonal atrophy developed early before neurofibrillary tangles. Neurofibrillary inclusions developed in neurons at 3 months and were of two types, suggestive of a selective vulnerability of neurons to form different types of fibrillary aggregates. A first type of tau-positive neurofibrillary tangles, more abundant in the forebrain, were composed of ribbon-like 19-nm-wide filaments and twisted paired helical filaments. A second type of tau and neurofilament-positive neurofibrillary tangles, more abundant in the spinal cord and the brainstem, were composed of 10-nm-wide neurofilaments and straight 19-nm filaments. Unbiased stereological analysis indicated that total number of pyramidal neurons and density of neurons in the lumbar spinal cord were not reduced up to 12 months in Tg30tau mice. This Tg30tau model thus provides evidence that axonopathy precedes tangle formation and that both lesions can be dissociated from overt neuronal loss in selected brain areas but not from neuronal dysfunction.

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Crossref · 10.2353/ajpath.2007.070345

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  • Axonal degeneration precedes neuronal loss in mouse models of tauopathy and glaucoma.

    “This alteration is an early event in tau-induced neuronal dysfunction and corroborates previous findings in mouse models of tautopathy and glaucoma, showing that axonal degeneration precedes neuronal loss (Schlamp et al., 2006; Leroy et al., 2007; Figure 1A, Table 1).”

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Research works printed but not linked: 2

  1. Lee VMY, Goedert M, Trojanowski JQ: Neurodegenerative tauopa- thies. Annu Rev Neurosci 2001, 24:1121-1159
  2. Bue ´e L, Bussie `re T, Bue ´e-Scherrer V, Delacourte A, Hof PR: Tau protein isoforms, phosphorylation and role in neurodegenerative dis- orders. Brain Res Rev 2000, 33:95-130

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Authors
Leroy, K., Bretteville, A., Schindowski, K., Gilissen, E., Authelet, M., De Decker, R., Yilmaz, Z., Buée, L., & Brion, J.-P.
Affiliations
  • Université Libre de Bruxelles (BE)
  • Inserm (FR)
Corresponding author
Brion, Jean-Pierre
Venue
The American Journal of Pathology
Publisher
Elsevier BV
Published
2007-09
Volume
171
Issue
3
Pages
976-992
ISSN
0002-9440 (ISSN-L)
OpenAlex
W2047364115
Cited by
135
References
72
Citations by year
2026: 4 · 2025: 9 · 2024: 6 · 2023: 2 · 2022: 6 · 2021: 6 · 2020: 5 · 2019: 6 · 2018: 9 · 2017: 5 · 2016: 5 · 2015: 9 · 2014: 7 · 2013: 10 · 2012: 10
FWCI
6.68
Type
journal article
Language
en
Open access
Locations
  • American Journal Of Pathology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Dépôt institutionnel de l'Université libre de Bruxelles (Université Libre de Bruxelles) (submittedVersion)
Funders
  • Fédération pour la Recherche sur le Cerveau
  • Centre National de la Recherche Scientifique
  • Agence Nationale de la Recherche (ANR-05-BLANC-0320-01)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
tauopathy, neurofibrillary tangles, axonopathy, axonal swellings, axonal atrophy, neurofilaments, paired helical filaments, neuronal loss, motor impairment, neurogenic atrophy, stereology
MeSH terms
Glycogen Synthase Kinase 3 beta, Animals, Atrophy, Axons, Brain, Inclusion Bodies, Disease Models, Animal, Humans, Mice, Transgenic, Motor Activity, Movement Disorders, Nerve Degeneration, Neurons, Sciatic Nerve, Spinal Cord, Neurofibrillary Tangles, tau Proteins, Neurofilament Proteins, Tauopathies, Glycogen Synthase Kinase 3, JNK Mitogen-Activated Protein Kinases, Mice

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