title: Plasma trace element, plasma glutathione peroxidase, and superoxide dismutase levels in epileptic children receiving antiepileptic drug therapy.
abstract: Some antiepileptic drugs (AEDs) may alter trace element metabolism and free radical scavenging enzyme activities in humans and experimental animals. We investigated the effect of long-term AED therapy on copper (Cu), zinc (Zn), manganese (Mn), selenium (Se), magnesium (Mg), glutathione peroxidase (GSH-PX), and superoxide dismutase (SOD) in the plasma in children with epilepsy. During treatment with valproate (VPA) or carbamazepine (CBZ) monotherapy plasma Cu, Zn, Mn, Se, and Mg concentrations of patients were not statistically different from those of control subjects. The level of serum VPA weakly correlated with the increase in plasma Zn level. Recent studies suggest that membrane lipid peroxidation may be causally involved in some forms of epilepsies, and the decreased free radical scavenging enzyme activity is believed to cause the increased risk of an idiosyncratic drug reaction encountered in the management of epilepsy. Because GSH-PX and SOD are the most important members of antioxidant defense mechanisms, we quantitated the activities of these enzymes in plasma of children with epilepsy receiving VPA or CBZ. Only plasma GSH-PX activities in VPA group were higher than those of the control group, and the difference was statistically significant.
authors.affiliation: Department of Pediatrics, Gülhane Military Medical Academy, Ankara, Turkey.
authors.forename: A E
authors.initials: AE
authors.lastname: Kürekçi
authors.forename: F
authors.initials: F
authors.lastname: Alpay
authors.forename: S
authors.initials: S
authors.lastname: Tanindi
authors.forename: E
authors.initials: E
authors.lastname: Gökçay
authors.forename: O
authors.initials: O
authors.lastname: Ozcan
authors.forename: R
authors.initials: R
authors.lastname: Akin
authors.forename: A
authors.initials: A
authors.lastname: Işimer
authors.forename: A
authors.initials: A
authors.lastname: Sayal
mesh_terms: D000293:Adolescent; D000927:Anticonvulsants / Q000494:pharmacology / Q000627:therapeutic use*; D002220:Carbamazepine / Q000494:pharmacology / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D004827:Epilepsy / Q000097:blood* / Q000188:drug therapy* / Q000201:enzymology; D004912:Erythrocytes / Q000201:enzymology; D005260:Female; D005979:Glutathione Peroxidase / Q000097:blood*; D006801:Humans; D008297:Male; D013268:Stimulation, Chemical; D013482:Superoxide Dismutase / Q000097:blood*; D014131:Trace Elements / Q000097:blood*; D014635:Valproic Acid / Q000494:pharmacology / Q000627:therapeutic use; D015032:Zinc / Q000097:blood
chemical_list: D000927:Anticonvulsants; D014131:Trace Elements; D002220:Carbamazepine; D014635:Valproic Acid; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D015032:Zinc