Cited by 100Traumatic Brain Injury and Neurovascular DisturbancesAlzheimer's disease research and treatmentsTraumatic Brain Injury Research

Experimental brain injury induces expression of amyloid precursor protein, which may be related to neuronal loss in the hippocampus

MURAKAMI, NOBUKUNI, YAMAKI, TARUMI, IWAMOTO, YOSHIHIRO, SAKAKIBARA, TAKEHIKO, KOBORI, NOBUHIDE, FUSHIKI, SHINJI, UEDA, SATOSHI·1998·Journal of Neurotrauma

Abstract

Previous reports have demonstrated that some focal brain injuries increase amyloid precursor protein (APP) immunoreactivity in the region surrounding the injury where it was localized, in damaged axons and in pre-alpha 2 cells of the entorhinal cortex. However, to date, APP expression in the hippocampus remote from the impact site has not been comprehensively studied. Therefore, we have evaluated APP expression not only in the locally injured cerebral cortex but also in the hippocampus remote from the impact site. In the present paper, diffuse axonal injury was induced in rats in midline fluid percussion injury. APP expression was examined post injury using Western blot analysis and immunohistochemistry. Western blot analysis demonstrated that the expression of 100-kd APP was increased in both the cerebral cortex and hippocampus 24 h after injury. It then decreased in the hippocampus, but did not change in the cerebral cortex, 7 days after injury. Immunohistochemical studies showed increased immunoreactivity of APP in the neuronal perikarya and reactive astrocytes near the region of injury in the cerebral cortex 24 h to 7 days after injury. In the hippocampus, APP accumulated in the CA3 neurons 24 h and 3 days after injury, although no hemorrhagic lesions were seen at that site. The APP positive neurons in CA3 showed shrunken cell bodies and pyknotic nuclei 3 days after injury, and some of the neurons in CA3 had disappeared by 7 days postinjury. The results of present study s…

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Crossref · 10.1089/neu.1998.15.993

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  • APP expression increase after TBI has been replicated in multiple follow-up studies using CCI as well as midline and lateral FPI.

    “which has been replicated in multiple follow-up studies using CCI as well as midline and lateral FPI (124–126).”

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Authors
MURAKAMI, N., YAMAKI, T., IWAMOTO, Y., SAKAKIBARA, T., KOBORI, N., FUSHIKI, S., & UEDA, S.
Affiliations
Kyoto Prefectural University of Medicine (JP)
Venue
Journal of Neurotrauma
Published
1998-11
Volume
15
Issue
11
Pages
993-1003
ISSN
  • 0897-7151 (ISSN-L)
  • 1557-9042
OpenAlex
W2048397152
Cited by
100
References
0
Citations by year
2025: 1 · 2024: 1 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 2 · 2019: 1 · 2018: 6 · 2017: 2 · 2016: 3 · 2015: 2 · 2014: 6 · 2013: 3 · 2012: 7
FWCI
2.70
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neurotrauma (publishedVersion)
  • PubMed (publishedVersion)
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, traumatic brain injury, fluid percussion injury, hippocampus, CA3 neurons, neuronal loss, diffuse axonal injury, reactive astrocytes, cerebral cortex, APP overexpression, neurodegeneration
MeSH terms
Animals, Brain Injuries, Brain Stem, Corpus Callosum, Disease Models, Animal, Hippocampus, Immunohistochemistry, Male, Nerve Degeneration, Neurons, Nissl Bodies, Peptide Fragments, Time Factors, Blotting, Western, Amyloid beta-Peptides, Rats, Wistar, Rats

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