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Experimental diffuse brain injury results in regional alteration of gross vascular morphology independent of neuropathology


Ziebell, JM and Rowe, RK and Harrison, JL and Eakin, KC and Colburn, T and Willyerd, FA and Lifshitz, J, Experimental diffuse brain injury results in regional alteration of gross vascular morphology independent of neuropathology, Brain Injury, 30, (2) pp. 217-224. ISSN 0269-9052 (2016) [Refereed Article]

Copyright Statement

Copyright 2016 Taylor & Francis Group, LLC.

DOI: doi:10.3109/02699052.2015.1090012


PRIMARY OBJECTIVE: A dynamic relationship exists between diffuse traumatic brain injury and changes to the neurovascular unit. The purpose of this study was to evaluate vascular changes during the first week following diffuse TBI. It was hypothesized that pathology is associated with modification of the vasculature. METHODS: Male Sprague-Dawley rats underwent either midline fluid percussion injury or sham-injury. Brain tissue was collected 1, 2 or 7 days post-injury or sham-injury (n = 3/time point). Tissue was collected and stained by de Olmos amino-cupric silver technique to visualize neuropathology or animals were perfused with AltaBlue casting resin before high-resolution vascular imaging. The average volume, surface area, radius, branching and tortuosity of the vessels were evaluated across three regions of interest. RESULTS: In M2, average vessel volume (p < 0.01) and surface area (p < 0.05) were significantly larger at 1 day relative to 2 days, 7 days and sham. In S1BF and VPM, no significant differences in the average vessel volume or surface area at any of the post-injury time points were observed. No significant changes in average radius, branching or tortuosity were observed. CONCLUSIONS: Preliminary findings suggest gross morphological changes within the vascular network likely represent an acute response to mechanical forces of injury, rather than delayed or chronic pathological processes.

Item Details

Item Type:Refereed Article
Keywords:neurovascular unit, traumatic brain injury, neuropathology, vascular casting midline fluid percussion
Research Division:Biomedical and Clinical Sciences
Research Group:Neurosciences
Research Field:Neurosciences not elsewhere classified
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Ziebell, JM (Dr Jenna Ziebell)
ID Code:106514
Year Published:2016
Web of Science® Times Cited:2
Deposited By:Wicking Dementia Research and Education Centre
Deposited On:2016-02-12
Last Modified:2017-11-06

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