Influence of sodium valproate treatment on body mass and insulin resistance parameters in children with epilepsy
Introduction/Objective. One of the main side-effects in patients undergoing valproic acid treatment is weight gain. Weight gain might be the reason for drug discontinuation, especially in adolescent girls, and it has to be considered also before introducing the drug. The main goal of our study is to investigate a possible influence of antiepileptic therapy with sodium valproate on weight and glucose homeostasis in pediatric patients with epilepsy. Methods. The investigation included a total of 49 healthy children with recently diagnosed epilepsy. We measured height, weight and serum 12-hour overnight fasting glucose and insulin level before initiation and after 6- and 12-month valproic acid treatment period. The BMI and HOMA indexes were calculated for each patient and correlated after the initiation of therapy and after 6 and 12 months of therapy. Results. We found that children significantly gained weight with statistical significance (p<0.01) even after 6 months of therapy with a significant glucose metabolism change and statistical difference in average serum glucose and insulin levels (p<0.05). Conclusion. Our results show that a 12-month treatment with valproic acid in children with epilepsy has a great impact on weight gain and glucose homeostasis and metabolism. We strongly recommend that all children with recently diagnosed epilepsy at the initiation of valproate therapy should be closely monitored on a 6-month basis. Consultation of nutritionist is advised especially in children with preexisting problem with body weight.