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The principal glucose transporter at the bloodâbrain barrier (BBB) is the Glut1 isoform, and transporter density is believed to be an index of cerebral metabolic rate. In the present study, glucose transporter expression was studied in tissue resected 7â8 h after acute traumatic brain...
Activation of ornithine decarboxylase (ODC), the initial enzyme in polyamine synthesis, and accumulation of putrescine are thought to mediate pathological processes in the ischemic and traumatized brain. Past studies have separately investigated either ODC or polyamines after head injury. The...
Axonal injury (AI), one of the principal determinants of clinical outcome after head injury, may evolve over several hours after injury, raising the future possibility of therapeutic intervention during this period. A new head impact model of AI in sheep was developed to examine pathological and...
Traumatic brain injury (TBI) induces massive, transient ion flux, after impact. This may be via agonist gated channels, such as the muscarinic, cholinergic or NMDA receptor, or via voltage-dependent channels. Pharmacological blockade of the former, is neuroprotective in most TBI models, but the...
Standard magnetic resonance imaging (MRI) has been shown to be remarkably insensitive to acute changes following traumatic brain injury. Because diffusion-weighted MRI has recently demonstrated excellent sensitivity to acute ischemic injury and other CNS abnormalities, we evaluated the use of...
We evaluated in rats, the time course of changes in extracellular levels of amino acids, lactate and pyruvate, which ensued spinal cord compression of mild, moderate, and severe degrees. The neurochemical findings measured by HPLC were compared with known outcome measures of this model. A...
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