Abstract
Stress-related events that occur in the perinatal period can permanently change brain and behavior of the developing individual and there is increasing evidence that early-life adversity is a contributing factor in the etiology of drug abuse and mood disorders. Neural adaptations resulting from early-life stress may mediate individual differences in novelty responsiveness and in turn contribute to drug abuse vulnerability. Prenatal restraint stress (PRS) in rats is a well-documented model of early stress known to induce long-lasting neurobiological and behavioral alterations including impaired feedback mechanisms of the HPA axis, enhanced novelty seeking, and increased sensitiveness to psychostimulants as well as anxiety/depression-like behavior. Together with the HPA axis, functional alterations of the mesolimbic dopamine system and of the metabotropic glutamate receptors system appear to be involved in the addiction-like profile of PRS rats.
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