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Purpose: Absence epilepsy may be severe and is frequently accompanied by cognitive delay, yet its metabolic/hemodynamic aspects have not been established. The Genetic Absence Epilepsy Rats from Strasbourg (GAERS) are an isomorphic, predictive, and homologous model of human absence epilepsy. We studied hemodynamic changes related to generalized spike‐and‐wave discharges (GSWDs) in GAERS by using a...
Purpose: In a recent large‐scale gene‐expression study in a rat model of temporal lobe epilepsy (TLE) a persistent up‐regulation in the expression of the SCN7A gene was revealed. The SCN7A gene encodes an atypical sodium channel (Nax), which is involved in osmoregulation via a sensing mechanism for the extracellular sodium concentration. Herein we investigated the expression and cellular distribution...
The ketogenic diet (KD) is an effective treatment for epilepsy, but its mechanisms of action are poorly understood. We investigated the hypothesis that the KD inhibits mammalian target of rapamycin (mTOR) pathway signaling. The expression of pS6 and pAkt, markers of mTOR pathway activation, was reduced in hippocampus and liver of rats fed KD. In the kainate model of epilepsy, KD blocked the hippocampal...
Purpose: Adenosine kinase (ADK) represents the key metabolic enzyme for the regulation of extracellular adenosine levels in the brain. In adult brain, ADK is primarily present in astrocytes. Several lines of experimental evidence support a critical role of ADK in different types of brain injury associated with astrogliosis, which is also a prominent morphologic feature of temporal lobe epilepsy (TLE)...
Purpose: Statins are selective inhibitors of 3‐hydroxyl‐3‐methyl‐glutaryl coenzyme A (HMG‐CoA) reductase, the rate‐limiting enzyme of the mevalonate pathway for cholesterol biosynthesis. Increasing evidence indicates that statins, particularly atorvastatin, are neuroprotective in several conditions, including stroke, cerebral ischemia, traumatic brain injury, and excitotoxic amino acid exposure....
Purpose: The mammalian target of rapamycin (mTOR) pathway has been implicated in contributing to progressive epileptogenesis in models of chronic epilepsy. Conversely, seizures themselves may directly cause acute activation of the mTOR pathway. To isolate the direct effects of seizures on the mTOR pathway, the time course and mechanisms of mTOR activation were investigated with acute seizures induced...
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