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[Serum lipids. lipoproteins, and apolipoproteins in adult epileptics treated with carbamazepine, valproic acid, or phenytoin].

INTRODUCTION
It is known that anticonvulsants are able to modify lipid profile; nevertheless the initial studies were performed in patients or polytherapy whereas later investigations were carried out mostly in children.


OBJECTIVES
To evaluate serum lipids, lipoproteins and apolipoproteins in adult epileptic patients on monotherapy.


MATERIAL AND METHODS
Total cholesterol, triglycerides, low- and high-density lipoprotein cholesterol (including the HDL2 and the HDL3 subfractions) and apolipoproteins A1 and B were measured in 120 epileptics patients treated with carbamazepine (n = 42), sodium valproate (n = 38) and phenytoin (n = 40) and compared with the values of 48 healthy subjects.


RESULTS
Most of the measured parameters were significantly higher in patients receiving carbamazepine or phenytoin; carbamazepine-treated subjects showed specifically an increase in HDL2 lipoprotein cholesterol, whereas phenytoin-treated subjects showed specifically an increase of triglycerides; all of the observed alterations, save the increase in HDL lipoprotein cholesterol and apolipoprotein A1, were significant in women but not in men. Carbamazepine nor phenytoin related changes showed any correlation with the dose or the plasma levels of the drugs. No relevant modifications of serum lipids were seen in patients who received sodium valproate.


CONCLUSIONS
The observed alterations in serum lipids were associated to the use of anticonvulsants with enzyme inducing activity and showed significant differences between both sexes.