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  • Title: Vitamin E supplementation in phenytoin induced developmental toxicity in rats: postnatal study.
    Author: Mach M, Dubovický M, Navarová J, Kovacovský P, Ujházy E.
    Journal: Neuro Endocrinol Lett; 2006 Dec; 27 Suppl 2():69-73. PubMed ID: 17159783.
    Abstract:
    OBJECTIVES: The aim of this study was to test the effect of supranutritional dosage of the natural antioxidant vitamin E (VitE) on phenytoin (PHT) induced developmental toxicity and possible long-term effects in rat offspring. METHODS: PHT (150 mg/kg) was administered by oral gavage daily from day 7 to 18 of gestation and VitE prior to PHT orally on the same days. RESULTS: PHT administration alone resulted in decreased survival rate and lower body weight of pups on day 21 post partum (PP). Moreover, PHT slightly changed somatic growth and pups failed to present dynamic air righting on days 15-20 PP. VitE supplementation did not alleviate these changes but rather induced persisting body weight reduction on the days 21 PP and 100 PP. We observed also decreased brain wet weight in the PHT and VitE + PHT groups compared to controls. CONCLUSIONS: We concluded that prenatal supplementation with 500 mg/kg of VitE did not ameliorate the developmental toxicity of PHT and failed to protect postnatal development of rat offspring. Further, in the group supplemented with VitE, the occurrence of persistent body weight gain depression up to adulthood indicates its possible interference with somatic growth regulation.
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