Early effects of sodium valproate monotherapy on serum paraoxonase/arylesterase activities

Autor:	Christina Thanopoulou, Ioannis Papassotiriou, Spyros Regoutas, Kleopatra H. Schulpis, Aglaia Giannoulia-Karantana, George A. Karikas, Vassiliki Papaevangelou, Anastasia Bartzeliotou, Athena Fytou-Pallikari
Rok vydání:	2009
Předmět:	Male medicine.medical_specialty Sodium Clinical Biochemistry chemistry.chemical_element Antioxidants Arylesterase Seizures Internal medicine medicine Humans Child Serum paraoxonase Valproic Acid medicine.diagnostic_test Aryldialkylphosphatase Case-control study General Medicine Oxidants Lipids PON1 Antioxidant capacity Endocrinology chemistry Case-Control Studies Child Preschool Female lipids (amino acids peptides and proteins) Lipid profile Carboxylic Ester Hydrolases medicine.drug
Zdroj:	Scandinavian Journal of Clinical and Laboratory Investigation. 69:31-35
ISSN:	1502-7686 0036-5513
DOI:	10.1080/00365510802248051
Popis:	Valproic acid (VPA) treatment and paraoxonase1/arylesterase (PON1/Aryl) activities are related to the production of free radicals. Our aim was to study the PON1/Aryl activities in children on VPA therapy.Thirty-two children with seizures and 30 healthy child volunteers took part. Ill children underwent the common laboratory tests, as well as total antioxidant status (TAS), total oxidant status (TOS), lipid profile, liver enzymes and PON1/Aryl activities pre- and post-60 days on VPA therapy (30 mg/kg/24 h), whereas the healthy children were tested just once.None of the studied biochemical parameters differed between volunteers and children with seizures pretreatment. Liver enzymes, lipids and TOS levels (124+/-30 versus 580+/-40 micromol/L; p0.001) were significantly elevated, whereas the activities of PON1/Aryl (146+/-43 versus 118+/-40 U/mL/min 120+/-42 versus 98+/-38 KU/mL/min; p0.01) and TAS levels (436+/-42 versus 288+/-39 micromol/L; p0.001) were decreased in children after treatment. Additionally, strong negative correlations were found between PON1/Aryl activities, liver enzymes, TOS (r = -0.69) and VPA levels (r = -0.57), whereas PON1/Aryl activities correlated positively with TAS, HDL and Apo A-I in all groups.Serum PON1/Aryl activities were decreased after 60 days on VPA treatment, probably due to liver dysfunction and free radicals production by VPA, without excluding the possibility of a direct action of the drug on the enzymes.
Databáze:	OpenAIRE
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