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Published in: Acta Neuropathologica 4/2006

01-10-2006 | Original Paper

The fate of Nissl-stained dark neurons following traumatic brain injury in rats: difference between neocortex and hippocampus regarding survival rate

Authors: Hidetoshi Ooigawa, Hiroshi Nawashiro, Shinji Fukui, Naoki Otani, Atsushi Osumi, Terushige Toyooka, Katsuji Shima

Published in: Acta Neuropathologica | Issue 4/2006

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Abstract

We studied the fate of Nissl-stained dark neurons (N-DNs) following traumatic brain injury (TBI). N-DNs were investigated in the cerebral neocortex and the hippocampus using a rat lateral fluid percussion injury model. Nissl stain, acid fuchsin stain and immunohistochemistry with phosphorylated extracellular signal-regulated protein kinase (pERK) antibody were used in order to assess posttraumatic neurons. In the neocortex, the number of dead neurons at 24 h postinjury was significantly less than that of the observed N-DNs in the earlier phase. Only a few N-DNs increased their pERK immunoreactivity. On the other hand, in the hippocampus the number of dead neurons was approximately the same number as that of the N-DNs, and most N-DNs showed an increased pERK immunoreactivity. These data suggest that not all N-DNs inevitably die especially in the neocortex after TBI. The fate of N-DNs is thus considered to differ depending on brain subfields.
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Metadata
Title
The fate of Nissl-stained dark neurons following traumatic brain injury in rats: difference between neocortex and hippocampus regarding survival rate
Authors
Hidetoshi Ooigawa
Hiroshi Nawashiro
Shinji Fukui
Naoki Otani
Atsushi Osumi
Terushige Toyooka
Katsuji Shima
Publication date
01-10-2006
Publisher
Springer-Verlag
Published in
Acta Neuropathologica / Issue 4/2006
Print ISSN: 0001-6322
Electronic ISSN: 1432-0533
DOI
https://doi.org/10.1007/s00401-006-0108-2

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