Articles: traumatic-brain-injuries.
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Disabil Rehabil Assist Technol · Jul 2014
Cognitive support technologies for people with TBI: current usage and challenges experienced.
We investigated the current use of off-the-shelf cognitive support technologies (CSTs) by individuals with traumatic brain injury (TBI), the challenges they and their caregivers face when using these technologies, the functional areas where support is needed, and their current experience in learning new technologies. ⋯ People with traumatic brain injury (TBI) are attempting to use a wide range of consumer available technologies to support cognition, although not always successfully. One important role for rehabilitation providers could be helping people with TBI use these technologies with more accuracy and success. People with TBI note that an important element in adopting new technology is good training in its use. Cognitive support technologies (CSTs) are one part of broader network of supports. People with TBI and their caregivers desire independence but do not want to lose the human element that can be provided by a caregiver. New technologies should be implemented with an understanding of an individual's broader support network. Psychosocial aspects of TBI need to be considered when designing and implementing CSTs. In particular, rehabilitation providers need to address the anxiety that many people with TBI experience, including fear about forgetting and their need for early, repeated reminders so they can prepare for upcoming events.
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Severe traumatic brain injury is associated with both acute and delayed neuro- logical injury. Cerebral vasospasm is commonly associated with delayed neurological decline in aneurysmal subarachnoid hemorrhage patients. However, the role played by vasospasm in traumatic brain injury is less clear. ⋯ We present a patient with a severe traumatic brain injury who had dramatic improvement following emergent decompressive hemicraniectomy. Two weeks after initial presentation he suffered a precipitous decline despite intensive surveillance. This case illustrates the distinct challenges of diagnosing cerebral vasospasm in the setting of severe traumatic brain injury.
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Controlled Clinical Trial
Multimodal assessment of primary motor cortex integrity following sport concussion in asymptomatic athletes.
Recent studies have shown, in asymptomatic concussed athletes, metabolic disruption in the primary motor cortex (M1) and abnormal intracortical inhibition lasting for more than six months. The present study aims to assess if these neurochemical and neurophysiological alterations are persistent and linked to M1 cortical thickness. ⋯ The present study highlights the importance of multimodal assesments of the impacts of sport concussions.
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Free Radic. Biol. Med. · Jul 2014
Peroxiredoxin VI oxidation in cerebrospinal fluid correlates with traumatic brain injury outcome.
Traumatic brain injury (TBI) patients would benefit from the identification of reliable biomarkers to predict outcomes and treatment strategies. In our study, cerebrospinal fluid (CSF) from patients with severe TBI was evaluated for oxidant stress-mediated damage progression after hospital admission and subsequent ventriculostomy placement. Interestingly, substantial levels of peroxiredoxin VI (Prdx6), a major antioxidant enzyme normally found in astrocytes, were detected in CSF from control and TBI patients and were not associated with blood contamination. ⋯ Not only is this the first report of an extracellular form of Prdx6 but also the first report of its detection at a substantial level in CSF. Taken together, our data suggest a meaningful correlation between TBI-initiated oxidation of Prdx6, its specific phospholipid hydroperoxide peroxidase activity, and severity of trauma outcome. Consequently, we propose that Prdx6 redox status detection has the potential to be a biomarker for TBI outcome and a future indicator of therapeutic efficacy.
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Journal of neurotrauma · Jul 2014
Temporal and Spatial Dynamics of Nrf2-ARE Mediated Gene Targets in Cortex and Hippocampus Following Controlled Cortical Impact Traumatic Brain Injury in Mice.
The pathophysiological importance of oxidative damage after traumatic brain injury (TBI) has been extensively demonstrated. The transcription factor nuclear factor erythoid related factor 2 (Nrf2) mediates antioxidant and cytoprotective genes by binding to antioxidant response elements (ARE) present in nuclear DNA. In this study, we characterized the time course of Nrf2-ARE-mediated expression in the cortex and hippocampus using a unilateral controlled cortical impact model of focal TBI. ⋯ Unfortunately, this does not precede, but rather coincides with, the occurrence of lipid peroxidative damage. This is the first known comparison between the time course of peroxidative damage and that of Nrf2-ARE activation during the first week post-TBI. These results underscore the necessity to discover pharmacological agents to accelerate and amplify Nrf2-ARE-mediated expression early post-TBI.