Articles: traumatic-brain-injuries.
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The pathophysiological mechanisms underlying mild traumatic brain injury (mTBI) are not well understood, but likely involve neuroinflammation. Here the controlled cortical impact model of mTBI in rats was used to test this hypothesis. Mild TBI caused a rapid (within 6 h post-mTBI) upregulation of synthesis of TNF-α and IL-1β in the cerebral cortex and hippocampus, followed by an increase in production of neutrophil (CXCL1-3) and monocyte (CCL2) chemoattractants. ⋯ The monocyte influx was not observed until 24 h post-mTBI, and these inflammatory cells predominantly entered the ipsilateral SAS and CVI, with a limited invasion of brain parenchyma. These observations indicate that the endothelium of pial microvessels responds to injury differently than that of intraparenchymal microvessels, which may be associated with the lack of astrocytic ensheathment of cerebrovascular endothelium in pial microvessels. These findings also suggest that neuroinflammation represents the potential therapeutic target in mTBI.
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Depression and anxiety · Jan 2016
FACTORS ASSOCIATED WITH POSTTRAUMATIC STRESS DISORDER FOLLOWING MODERATE TO SEVERE TRAUMATIC BRAIN INJURY: A PROSPECTIVE STUDY.
This study prospectively examined the relationship between preinjury, injury-related, and postinjury factors and posttraumatic stress disorder (PTSD) following moderate to severe traumatic brain injury (TBI). ⋯ There is a need to direct clinical attention to early identification and treatment of PTSD following TBI to improve outcomes.
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J Clin Exp Neuropsychol · Jan 2016
Development of an observational measure of social disinhibition after traumatic brain injury.
This study aimed to validate a new observational measure of socially disinhibited behavior for use in a population of individuals with traumatic brain injury (TBI). ⋯ This study demonstrates good interrater reliability and construct validity of the observational measure. The results evidence the usefulness of this measure and the NPI-D for detecting social disinhibition after TBI.
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Comparative Study
A comparison of the Full Outline of UnResponsiveness (FOUR) score and Glasgow Coma Score (GCS) in predictive modelling in traumatic brain injury.
To compare the performance of multivariate predictive models incorporating either the Full Outline of UnResponsiveness (FOUR) score or Glasgow Coma Score (GCS) in order to test whether substituting GCS with the FOUR score in predictive models for outcome in patients after TBI is beneficial. ⋯ Results showed that FOUR score and GCS perform equally well in multivariate predictive modelling in TBI.
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Acta Neurochir. Suppl. · Jan 2016
Characterization of Cerebral Vascular Response to EEG Bursts Using ICP Pulse Waveform Template Matching.
Neurovascular coupling is the relationship between the activity of the brain and the subsequent change in blood flow to the active region. The most common methods of detecting neurovascular coupling are cumbersome and noncontinuous. However, the integration of intracranial pressure (ICP) and electroencephalography (EEG) may serve as an indirect measure of neurovascular coupling. ⋯ These changes were compared using a template obtained from patients undergoing CO2-induced vasodilation. All segments exhibited a significant period of vasodilation within 1-2 s after burst, and 4 of 5 had a significant period of vasoconstriction within 4-11 s of the EEG burst, suggesting that there might be a characteristic response of vasodilation and subsequent vasoconstriction after a spontaneous EEG burst. Furthermore, these findings demonstrate the potential of integrated EEG and ICP as an indirect measure of neurovascular coupling.