Animal models of traumatic brain injury : a critical evaluation

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Title: Animal models of traumatic brain injury : a critical evaluation
Authors: O'Connor, William
Smyth, Aoife
Gilchrist, M. D.
Permanent link: http://hdl.handle.net/10197/4621
Date: May-2011
Abstract: Animal models are necessary to elucidate changes occurring after brain injury and to establish new therapeutic strategies towards a stage where drug efficacy in brain injured patients (against all classes of symptoms) can be predicted. In this review, six established animal models of head trauma, namely fluid percussion, rigid indentation, inertial acceleration, impact acceleration, weight-drop and dynamic cortical deformation are evaluated. While no single animal model is entirely successful in reproducing the complete spectrum of pathological changes observed after injury, the validity of these animal models including face, construct, etiological and construct validity and how the models constitute theories about brain injury is addressed. The various types of injury including contact (direct impact) and non-contact (acceleration/deceleration) and their associated pathologies are described. The neuropathologic classifications of brain injury including primary and secondary, focal and diffuse are discussed. Animal models and their compatibility with microdialysis studies are summarised particularly regarding the role of excitatory and inhibitory amino acid neurotransmitters. This review concludes that the study of neurotransmitter interactions within and between brain regions can facilitate the development of novel compounds targeted to treat those cognitive deficits not limited to a single pharmacological class and may be useful in the investigation of new therapeutic strategies and pharmacological testing for improved treatment for traumatic head injury.
Type of material: Journal Article
Publisher: Elsevier
Copyright (published version): 2011 Elsevier
Keywords: Diffuse injuryDirect brain deformationFocal injuryHead injuryInertial accelerationMicrodialysis
DOI: 10.1016/j.pharmthera.2011.01.001
Language: en
Status of Item: Peer reviewed
Appears in Collections:Mechanical & Materials Engineering Research Collection

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