eCite Digital Repository

Neurogenesis and Glial Proliferation Are Stimulated Following Diffuse Traumatic Brain Injury in Adult Rats

Citation

Bye, N and Carron, S and Han, X and Aqyapomaa, D and Ng, SY and Yan, E and Rosenfeld, JV and Morganti-Kossmann, MC, Neurogenesis and Glial Proliferation Are Stimulated Following Diffuse Traumatic Brain Injury in Adult Rats, Journal of neuroscience research, 89, (7) pp. 986-1000. ISSN 0360-4012 (2011) [Refereed Article]

Copyright Statement

Copyright 2011 Wiley-Liss, Inc.

DOI: doi:10.1002/jnr.22635

Abstract

Although increased neurogenesis has been described in rodent models of focal traumatic brain injury (TBI), the neurogenic response occurring after diffuse TBI uncomplicated by focal injury has not been examined to date, despite the pervasiveness of this distinct type of brain injury in the TBI patient population. Here we characterize multiple stages of neurogenesis following a traumatic axonal injury (TAI) model of diffuse TBI as well as the proliferative response of glial cells. TAI was induced in adult rats using an impact-acceleration model, and 5-bromo-2'-deoxyuridine (BrdU) was administered on days 1-4 posttrauma or sham operation to label mitotic cells. Using immunohistochemistry for BrdU combined with phenotype-specific markers, we found that proliferation was increased following TAI in the subventricular zone of the lateral ventricles and in the hippocampal subgranular zone, although the ultimate production of new dentate granule neurons at 8 weeks was not significantly enhanced. Also, abundant proliferating and reactive astrocytes, microglia, and polydendrocytes were detected throughout the brain following TAI, indicating that a robust glial response occurs in this model, although very few new cells in the nonneurogenic brain regions became mature neurons. We conclude that diffuse brain injury stimulates early stages of a neurogenic response similar to that described for models of focal TBI.

Item Details

Item Type:Refereed Article
Keywords:TBI; neurogenesis; diffuse brain injury
Research Division:Medical and Health Sciences
Research Group:Neurosciences
Research Field:Central Nervous System
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Nervous System and Disorders
Author:Bye, N (Dr Nicole Bye)
ID Code:122258
Year Published:2011
Web of Science® Times Cited:34
Deposited By:Pharmacy
Deposited On:2017-11-07
Last Modified:2017-11-20
Downloads:0

Repository Staff Only: item control page