Abstract

Rats that had been prenatally exposed to cocaine were tested later in life for their sensitivity to cocaine-kindled seizures and acute cocaine-induced seizures. When treated daily with cocaine, beginning at one month of age, males prenatally exposed to 40 mg/kg cocaine developed seizures in a fewer number of days than those prenatally exposed to saline. Prenatally cocaine-treated females did not seize more rapidly than controls in the cocaine kindling paradigm; however, they were more susceptible to seizures in response to an acute high dose of cocaine. These results suggest that rats prenatally cocaine-treated are more sensitive to the seizure-producing effects of cocaine later in life, and this enhanced sensitivity is differentially expressed in males and females.

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