Cited by 130Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

β-Amyloid (Aβ) Deposition in the Brains of Aged Orangutans

Gearing, M, Tigges, J, Mori, H, Mirra, S.S·1997·Neurobiology of Aging

Abstract

While aged monkeys of several species show cerebral amyloid deposition in senile plaques and blood vessels similar to that seen in human aging and Alzheimer's disease (AD), studies of great apes have been limited. Using histological and immunohistochemical methods, we examined the brains of four orangutans aged 10, 28, 31, and 36 years. We encountered sparse beta-amyloid (A beta)-immunoreactive, silver-negative plaque-like structures in the brains of the three older apes. The 36-year-old orangutan also evidenced small A beta-positive deposits in subcortical white matter and sparse vascular amyloid deposition, primarily in meningeal vessels. Neurofibrillary tangles were not detected on silver stains or on tau or ubiquitin immunohistochemistry. Many of the A beta-positive plaque-like deposits in the orangutans were apolipoprotein E-immunoreactive, as we have previously reported in aged rhesus monkeys and an aged chimpanzee. Also, paralleling our earlier findings in these nonhuman primates, A beta 40 in plaques was more prominent in the orangutan than is typically seen in human aging, AD, and Down syndrome. These intriguing species differences may provide clues to the mechanisms of amyloid deposition and the development of neuropathologic changes in AD.

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Crossref · 10.1016/s0197-4580(97)00012-2

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  • Great apes accumulate Aβ in the brain, resulting in the development of amyloid plaques and CAA in aged animals.

    “Great apes accumulate Aβ in the brain, resulting in the development of amyloid plaques and CAA in aged animals [43, 44, 78, 112, 113, 124].”

    From Alzheimer's disease: experimental models and reality (2017) · cites this paper as [44]

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Authors
Gearing, M., Tigges, J., Mori, H., & Mirra, S. S.
Affiliations
  • Emory University (US)
  • Tokyo Institute of Psychiatry (JP)
Corresponding author
Mirra, S.S
Venue
Neurobiology of Aging
Publisher
Elsevier BV
Published
1997-03
Volume
18
Issue
2
Pages
139-146
ISSN
0197-4580 (ISSN-L)
OpenAlex
W2088004915
Cited by
130
References
42
Citations by year
2026: 1 · 2025: 8 · 2024: 8 · 2023: 7 · 2022: 3 · 2021: 9 · 2020: 2 · 2019: 1 · 2018: 2 · 2017: 5 · 2016: 11 · 2015: 2 · 2014: 6 · 2013: 8 · 2012: 3
FWCI
1.84
Type
journal article
Language
en
Open access
closed
Locations
  • Neurobiology of Aging (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Veterans Affairs
  • National Institutes of Health
  • National Institute on Aging (P30AG010130, AG-10130, 2 P01-AG 00001, P01AG000001)
  • National Center for Research Resources (RR-00 165, P51RR000165)
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
amyloid-beta deposition, orangutans, aging, Alzheimer's disease, apolipoprotein E, Aβ40, vascular amyloid, neurofibrillary tangles, great apes, species differences, non-human primates, meningeal vessels
MeSH terms
Aging, Animals, Brain, Brain Chemistry, Cerebral Cortex, Coloring Agents, Female, Immunohistochemistry, Male, Pongo pygmaeus, Amyloid beta-Peptides, Neurofibrillary Tangles

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