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Arginine vasopressin (AVP) is a peptide involved in social behaviors in rodents. To investigate the mechanism underlying the deficits in social behavior induced by blockade of N-methyl-d-aspartate (NMDA) receptors, this study examined the effect of noncompetitive NMDA antagonists on AVP receptor binding and social interaction in the rat. Subchronic phencyclidine (PCP) administration (2 mg/kg/day,...
In the sham-operated rats, exposure to either footshock or psychological stress induced similar biphasic alterations of dopamine (DA) release (an initial increase followed by a decrease below baseline levels) in the amygdala 4 weeks after the surgery. On the other hand, the left entorhinal cortex lesions abolished the late decrement phase of DA release below baseline levels. These results suggest...
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