Cited by 239Traumatic Brain Injury and Neurovascular DisturbancesAlzheimer's disease research and treatmentsTraumatic Brain Injury Research

Immunohistochemical characterization of alterations in the distribution of amyloid precursor proteins and beta-amyloid peptide after experimental brain injury in the rat

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Pierce, JE, Trojanowski, JQ, Graham, DI, Smith, DH, McIntosh, TK·1996·The Journal of Neuroscience

Abstract

Recent reports suggest a relationship between traumatic brain injury and the precocious development of neurodegenerative cascades, including diffuse deposits of beta-amyloid peptides (A beta) in the injured brain. Because the lateral fluid-percussion (FP) model of experimental brain injury produces clinically relevant neuropathological sequelae in the rat brain, we used this model together with a series of antibodies specific for amyloid precursor proteins (APPs), APP-like proteins (APLPs), or A beta to identify acute neurodegenerative changes after brain trauma. Male Sprague-Dawley rats were anesthetized and subjected to lateral FP brain injury of moderate to high severity. At 1 hr, 2 hr, 48 hr, 1 week, or 2 weeks after injury, animals were killed and their brains were removed for immunohistochemical analysis. APP/APLP immunoreactivity increased in specific brain regions as early as 1 hr after injury and persisted for at least 2 weeks. Axons in the thalamus and subcortical white matter showed the greatest APP/APLP accumulation. Injured cortex, striatum, cingulum, and hippocampus also demonstrated significant axonal accumulations of APP/APLP. Accumulation of APP/APLPs occurred primarily ipsilateral to the injury, although bilateral changes were observed in some brain regions. No deposition of A beta was observed in any brain region at any time point examined. These results demonstrate a pattern of widespread axonal pathology after lateral FP brain injury in the rat, characterized by intra-axonal accumulations of APP/APLP immunoreactivity in the absence of plaque- like deposits of A beta in the traumatized brain.

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Crossref · 10.1523/jneurosci.16-03-01083.1996

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  • APP expression increases in striatal and hippocampal axons along with cortical and thalamic neurons within the first 24 h after experimental impact and fluid percussion TBI.

    “For example, APP expression increases in striatal and hippocampal axons along with cortical and thalamic neurons within the first 24 h after experimental impact and fluid percussion TBI (121–123)”

    From The Inflammatory Continuum of Traumatic Brain Injury and Alzheimer’s Disease (2018) · cites this paper as [121]

    The Discussion (page not available in our copy) reports increased APP/APLP immunoreactivity in the thalamus at 1 hour and in the striatum, hippocampus, and injured cortex by 2 hours after lateral fluid-percussion injury. This paper does not study impact injury, and the Results place increased staining in cortical and thalamic neuronal cell bodies at 48 hours or later, not within the first 24 hours. It measures APP/APLP accumulation and immunoreactivity rather than establishing increased APP expression. (LLM, conf=0.88)

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  • A majority of rodent studies fail to show Aβ deposition after TBI in non-transgenic animals using CCI, FPI, and weight drop models.

    “a majority of rodent studies fail to show this association in non-transgenic animals using CCI, FPI, and weight drop models (121, 122, 124, 125, 135).”

    From The Inflammatory Continuum of Traumatic Brain Injury and Alzheimer’s Disease (2018) · cites this paper as [121]

    The Discussion (page unavailable) reports no Aβ deposits after lateral fluid-percussion injury in rats and describes a weight-drop study with no evidence of Aβ deposits. It does not address CCI or establish that a majority of rodent studies found no deposition. (LLM, conf=0.84)

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Authors
Pierce, J., Trojanowski, J., Graham, D., Smith, D., & McIntosh, T.
Affiliations
University of Pennsylvania (US)
Venue
The Journal of Neuroscience
Published
1996-02-01
Volume
16
Issue
3
Pages
1083-1090
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1879457624
Cited by
239
References
75
Citations by year
2025: 2 · 2024: 2 · 2023: 3 · 2022: 4 · 2021: 6 · 2020: 5 · 2019: 8 · 2018: 7 · 2017: 8 · 2016: 5 · 2015: 15 · 2014: 4 · 2013: 10 · 2012: 8
FWCI
10.01
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (P30AG010124, AG-10124)
  • National Institute of Neurological Disorders and Stroke (NS-08803, NS26818)
Topics
  • Health Sciences › Medicine › Neurology › Traumatic Brain Injury and Neurovascular Disturbances
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
Keywords
amyloid precursor protein, amyloid-beta, traumatic brain injury, fluid percussion injury, axonal pathology, neurodegeneration, thalamus, white matter, hippocampus, striatum
MeSH terms
Animals, Brain Injuries, Hippocampus, Male, Nerve Degeneration, Nerve Tissue Proteins, Pressure, Thalamus, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Rats, Sprague-Dawley, Rats

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