Compared to publications of elevated levels of neuron-specific enolase (NSE) in adult patients with single seizures or epilepsy, data in children are rare. We studied serial NSE serum concentrations in children after febrile convulsions (FC). In addition, the predictive value of NSE levels in serum for recurrence of FC or further development of epilepsy was determined. Serum NSE levels were determined at (1) 0-2 h, (2) 6-8 h and (3) 20-24 h after a first or second FC in children aged 4 months to 6 years. Eighty-two patients (35 female, 47 male) aged four months to 5.7 years were included. Seventy-one children had generalized, and seven focal FC. The seizures in the remaining four patients could not be properly classified. During the follow-up of 14-28 months 13 patients had at least one more FC and in five epilepsy due to recurrent afebrile seizures was diagnosed. There was no statistically significant elevation of NSE concentration in the group of children with FC or the group with recurrent FC or epilepsy. The comparison of the NSE values at different times after FC did not show any significant differences either. It seems from our results that NSE activity cannot be used as a predictor for possible brain damage caused by FC and that it is not of predictive value considering further FC or development of epilepsy. We cannot confirm the published results of the elevation of NSE serum levels in adults with single seizures or status epilepticus.
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