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- W2043343090 abstract "Recent discoveries in molecular biology and human genetics have contributed greatly to an understanding of the nature of seizure (ictal) activity. However, two questions of fundamental clinical importance continue to resist scientific inquiry: when and why does a seizure begin; and when and why does a seizure end? This paper cites evidence from the medical literature in support of two counterintuitive concepts that address this issue. First, that despite the diversity of conditions that are associated with seizures, the ictal response results from disturbances of a mitochondrial metabolic pathway that is common to them all. Second, that the seizure is not inherently harmful but is, instead, associated with massive intracerebral circulatory changes that are intended to restore impaired mitochondrial function. We hypothesize that the protogenic pathophysiological condition leading to neuronal hyperexitability and seizures results from inadequate mitochondrial energy production due to hypoxia or a hypoxia-equivalent state. Failure to generate sufficient adenosine triphosphate compromises ionic pump function and the ability to maintain neuronal homeostasis and stability. The seizure cascade is a heroic effort to perfuse the brain when local mechanisms fail to restore energy production and ionic equilibrium. In summary, a seizure starts when the neuron's aerobic machinery fails to maintain effective ionic pump function and terminates when increased cerebral perfusion, associated with the seizure response, restores adequate supplies of metabolic nutrients required for mitochondrial respiration. This unorthodox unifying concept that views ictogenesis as part of a restorative process rather than as a life threatening event may provide the basis for a much needed paradigm shift in the management of seizures. Current antiepileptic drugs are associated with many serious side effects, including death, and fail to control seizures in 20% of patients with primary generalized epilepsy and 35% of patients with partial epilepsy. We propose that efforts to prevent and control seizures should be directed away from pharma-chemical suppression towards removing the causes of disturbed neuronal energy production and developing methods and bioactive agents that promote an optimized physiological milieu within the brain." @default.
- W2043343090 created "2016-06-24" @default.
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- W2043343090 date "2004-05-01" @default.
- W2043343090 modified "2023-10-02" @default.
- W2043343090 title "A unifying concept of seizure onset and termination" @default.
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- W2043343090 doi "https://doi.org/10.1016/j.mehy.2003.10.020" @default.
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