Revising the role of magnesium in epilepsy research and management
Abstract
Magnesium is a bioessential mineral with multiple neuroactive effects. Mg2+ ion stabilizes excitable membranes. Epilepsy is the third most frequent chronic neurological condition characterized by spontaneous reappearance of unprovoked epileptic seizures, whose underlying mechanisms are not completely understood yet. A literature review on the role of magnesium in basic and clinical epileptology has been made in order to enlighten the importance of magnesium deficiency in the mechanisms of epileptic brain hyperexcitability, as well as the significance of including magnesium into the management of epilepsy patients. Neuronal magnesium requirements are high. The concentration of magnesium in the cerebrospinal fluid (CSF) is even higher than in the blood. In experimental epilepsy research, perfusing hippocampal slices with artificial CSF containing low concentration of extracellular Mg2+ is a frequently used animal model of spontaneously induced epileptiform activity. Magnesium deficiency is the most frequent clinically unrecognized electrolyte disbalance, often overlooked in epilepsy patients. Serum and CSF Mg2+ concentrations are lower in patients with epilepsy, as compared to healthy controls. Hypomagnesaemia increases seizure frequency and the risk of sudden unexpected death in pharmacoresistant epilepsy. Oral magnesium supplements help achieve better seizure control. Parenterally administered Mg2+ efficiently controls seizures in several epileptic encephalopathies in adults…
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