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Group I Metabotropic Glutamate Receptors On Selective Cellular Subtypes In Epileptogenic Malformed Cortex, William Bruch
Group I Metabotropic Glutamate Receptors On Selective Cellular Subtypes In Epileptogenic Malformed Cortex, William Bruch
Theses and Dissertations
Cortical malformations from altered development are common causes of human epilepsy. The cellular mechanisms responsible for the epileptic state of cortex remain unclear and a significant portion of these cases do not respond to treatment. Previous electrophysiological recordings in the Jacobs lab in a rat polymicrogyria model indicated an increased response to group I metabotropic glutamate receptor agonists in the region adjacent to the malformation (PMZ). In addition there was a novel response in low threshold spiking (LTS) interneurons via mGluR5 activation. To determine whether cell specific expression of these receptors was altered in malformed cortex immunohistochemical stains were performed …
The Role Of Inhibitory Interneurons In A Model Od Developmental Epilepsy, Patrick James Wolfgang
The Role Of Inhibitory Interneurons In A Model Od Developmental Epilepsy, Patrick James Wolfgang
Theses and Dissertations
Epilepsy, defined by recurrent seizures, is the one of the most prevalent neurological disorders worldwide (World Health Organization 2007). While many forms of epilepsy are well-controlled by anti-epileptogenic medications, a significant portion of patients have intractable, i.e. untreatable, seizures. The etiology of these seizures is varied, but a significant cause, particularly for patients with intractable epilepsy is developmental malformation. In these cases, an error or interruption during the development of the neocortex produces a structural alteration. Such patients may have other neurological problems, but seizures are the most common symptom. The neuronal mechanisms that link malformation and cortical hyperexcitability are …
Status Epilepticus Results In A Duration-Dependent Increased Protein Kinase A Activity In The Rat Pilocarpine Model, James M. Bracey
Status Epilepticus Results In A Duration-Dependent Increased Protein Kinase A Activity In The Rat Pilocarpine Model, James M. Bracey
Theses and Dissertations
This study was conducted to characterize cellular changes occurring during the progression of status epilepticus (SE) that could lead to the maintenance of increased membrane excitability. SE was induced by injection of pilocarpine after which rats were monitored both electrographically and behaviorally. After various lengths of time in SE, specific brain regions were isolated for biochemical study. SE resulted in an early maintenance of PKA activity in both cortical homogenate and crude synaptoplasmic membrane (crude SPM) fractions. At subsequent stages of SE there was a significant increase in PKA activity in both homogenate and crude SPM fractions. Wester blot analysis …