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Exposure of rats to restraint stress during late pregnancy produces offspring with a variety of behavioral and neurobiological alterations. It has been suggested that prenatal stress leads to long-lasting changes in the hypothalamo-pituitary-adrenal axis in the offspring. One feature of prenatally-stressed rats is a susceptibility to amphetamine self-administration. Since this behavior has been...
The biochemical changes in DA and 5HT systems were investigated in amphetamine (AMPH)-sensitized rats, 1 and 15 days after cessation of treatment (5 mg/kg AMPH, i.p., twice a day for 6 days). At both times, AMPH-treated rats exhibited behavioral sensitization, as revealed by an enhancement of the stereotypic response to a challenge dose of 2 mg/Kg, ip. AMPH. Basal dopamine (DA) and serotonin (5-HT)...
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