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  • Title: Motor and electroencephalographic response of refractory experimental status epilepticus in rats to treatment with MK-801, diazepam, or MK-801 plus diazepam.
    Author: Walton NY, Treiman DM.
    Journal: Brain Res; 1991 Jul 05; 553(1):97-104. PubMed ID: 1933279.
    Abstract:
    Pharmacologic control of refractory status epilepticus has been little-studied in experimental models. In this experiment, rats in status epilepticus induced by lithium and pilocarpine were treated with MK-801 alone, diazepam alone or MK-801 plus diazepam, with treatment begun at a time when this model of status is refractory to anticonvulsant drugs. EEG samples were digitized before and for two hours after treatment, and the digitized samples subjected to computerized frequency analysis. MK-801 plus diazepam halted all manifestations of status epilepticus. Although neither MK-801 alone nor diazepam alone stopped the ongoing electrographic status epilepticus, both drugs diminished motor seizures and total EEG power. MK-801 treatment prevented the progression of changes in EEG pattern which normally occurs in this model of status epilepticus, while diazepam did not. MK-801, with and without diazepam, allowed the rats to survive the episode of status epilepticus, but rats treated with MK-801 alone required several days to recover completely, while the MK-801 plus diazepam rats appeared normal the next day. MK-801 may be a useful agent for treatment of human refractory status epilepticus, because of its neuroprotective action as well as its ability to potentiate GABAergic drugs.
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