Effects of dipropylacetate on brain development

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Abstract
Dipropylacetate (DPA; valproci acid) is a new anticonvulsant reported to be effective in many types of seizures, including those that occur early in life. This study describes the effects of chronic administration of DPA upon a developing organism. Four‐day‐old rat pups were injected daily with either 75 mg/kg DPA, 200 mg/kg DPA, or vehicle until day 18. Administration of DPA resulted in decreased body and organ weights, with the greatest reductions in the 200 mg/kg group. To control caloric intake, an additional experiment was conducted. Animals were injected with either vehicle or 200 mg/kg DPA. Each animal was implanted with a chronic intragastric cannula and fed through the cannula. The results of this experiment indicated that body and organ weights were the same for both vehicle and drug groups, except for brain. The animals receiving DPA had significant deficits of 12% in total brain weight and 22% in weight of the cerebellum. The data suggest that chronic administration of DPA early in life may have adverse consequences on brain growth.