Evaluation of developmental neurotoxicity: some important issues focused on neurobehavioral development.

Exposure of the developing organism to industrial chemicals and physical factors represents a serious risk factor for the development of neurobehavioral disorders, such as attention-deficit hyperactivity disorder, autism and mental retardation. Appropriate animal models are needed to test potentially harmful effects and mechanisms of developmental neurotoxicity of various chemical substances. However, there are significant human vs.

Vitamin E supplementation in phenytoin induced developmental toxicity in rats: postnatal study.

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).

Effect of melatonin on neurobehavioral dysfunctions induced by intrauterine hypoxia in rats.

Intrauterine hypoxia associated with oxidative stress represents an important risk factor for development of neurobehavioral dysfunctions. In the present study, we investigated the potential protective effect of melatonin (MEL) on neurobehavioral dysfunctions induced by chronic intrauterine hypoxia in rats by the anticonvulsant drug phenytoin (PHT), which is known by its teratogenic potential. Pregnant female rats (Wistar/DV) were orally treated by PHT (150 mg/kg) from day 7 to 18 of gestation.

Effect of repeated administration of the antioxidant stobadine on the behavior of singly-housed male mice in intraspecies conflict.

The aim of the present study was to assess the effect of repeated oral administration of stobadine (70 mg/kg) on the occurrence of selected behavioral elements during exposure to an intraspecies conflict between singly-housed and group-housed male mice. Isolation induced timidity (defensive-escape behavior without attacks) in most mice (87%). This isolation-induced timidity was reduced after stobadine treatment.

Antioxidant stobadine and neurobehavioural development of the rat offspring.

Stobadine (STO) is a potential neuro- and cardioprotective drug with high antioxidative properties. The presented study investigated the effects of oral STO administration (5, 15 and 50 mg/kg/d) during pregnancy and lactation to dams on neurobehavioural development of their offspring (body growth and maturation, sensory functions, neuromotor and reflex development, levels of activity and emotional reactivity, memory and learning processes). The results of our experiments showed that long-term administration of STO had no adverse effects on the course of pregnancy and lactation in dams and on the neurobehavioural development of offspring.