Cited by 273Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Neuritic (Senile) Plaques and Filamentous Changes in Aged Rhesus Monkeys

Wiśniewski, Henryk M., Ghetti, Bernardino, Terry, Robert D.·1973·Journal of Neuropathology & Experimental Neurology

Abstract

Three rhesus monkeys, whose approximate ages were 16 to 18 years old, and one 22 to 23 years old, were studied for age changes in the nervous system. The brains of all four were slightly shrunken and the meninges were fibrotic. The vessels were stiff and fibrosed, but were not atheromatous. The lateral ventricles were mildly dilated. Bodian preparations of the oldest monkey and of one of the 16− to 18-year-old monkeys revealed the presence of neuritic (senile) plaques. Serial one-micron toluidine blue-stained sections showed that some plaques were closely associated with capillaries. Electron microscopic studies revealed that the plaques were identical to those of human Alzheimer's disease except that the typical twisted tubules were absent. Outside the plaques there were scattered neurites showing degeneration of the type found in the neuritic plaques. Furthermore, two forms of rare pathological fibrillar material were found in 3 animals. One was made up of pairs of helically wound 100 Å filaments with a twist every 500 Å. The other fibrillar structures were made up of bundles of parallel filamentous elements, each about 130 Å thick, with a distinctly granular structure on longitudinal section. A list of other abnormalities includes vascular amyloidosis, lipofuscin accumulation, dark neurons undergoing phagocytosis, myelin remodeling, aggregates of large electron-dense droplets, enlarged mitochondria and mitochondria with paracrystalline inclusions, corpora amylacea, Rosenthal fibers and two types of virus-like particles.

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Crossref · 10.1097/00005072-197310000-00007

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  • The neuropathologic hallmarks of AD are neurofibrillary tangles (including pretangles) and AβPs (including diffuse and neuritic plaques).

    “The neuropathologic hallmarks of AD are neurofibrillary tangles (NFTs; including pretangles) and AβPs (including diffuse and neuritic plaques, which may also be referred to as “senile plaques” [2, 18, 19]; Fig. 1 and Table 1).”
  • NPs represent a nidus in which extracellular plaque substance(s) seem to induce intracellular degenerative changes with tau pathology.

    “The particular toxic substance(s) within NPs still have not been completely characterized (90, 103, 278), but NPs represent a nidus in which extracellular plaque substance(s) seem to induce intracellular degenerative changes with tau pathology (18, 50, 279-281).”

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Authors
Wiśniewski, H. M., Ghetti, B., & Terry, R. D.
Affiliations
Albert Einstein College of Medicine (US)
Venue
Journal of Neuropathology & Experimental Neurology
Published
1973-10
Volume
32
Issue
4
Pages
566-584
ISSN
  • 0022-3069 (ISSN-L)
  • 1554-6578
OpenAlex
W2090601883
Cited by
272
References
0
Citations by year
2026: 2 · 2025: 1 · 2024: 6 · 2023: 1 · 2022: 2 · 2021: 4 · 2020: 1 · 2019: 3 · 2018: 3 · 2017: 1 · 2016: 2 · 2013: 2 · 2012: 4
FWCI
8.85
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neuropathology & Experimental Neurology (publishedVersion)
  • PubMed (publishedVersion)
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
neuritic plaques, amyloid plaques, Alzheimer's disease, rhesus monkeys, brain aging, fibrillar material, helical filaments, vascular amyloidosis, lipofuscin, myelin remodeling, corpora amylacea, Rosenthal fibers, virus-like particles, mitochondrial inclusions, meningeal fibrosis
MeSH terms
Aging, Amyloid, Animals, Haplorhini, Basal Ganglia, Brain, Brain Chemistry, Cerebral Cortex, Dementia, Disease Models, Animal, Female, Humans, Macaca, Male, Medulla Oblongata, Microscopy, Electron, Nerve Degeneration, Neurofibrils, Pons, Spinal Cord

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