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Birth insult and stress interact to alter dopamine transporter binding in rat brain

El-Khodor, Bassem F.; Boksa, Patricia CA

Clinical Neuroscience And Neuropathology

This study investigated whether mild birth complications (C-section birth, C-section + 15 min global anoxia) interact with stress at adulthood to modulate levels of [3H]WIN 35428 binding to dopamine transporters (DAT) in rat brain. Without stress, adult C-sectioned rats showed increased DAT binding in the dorsal striatum and nucleus accumbens core compared to vaginal birth, while anoxic rats showed increased DAT binding in cingulate and infralimbic cortices. Stress at adulthood had differential effects on DAT binding in the three birth groups. Thus, after repeated tail pinch stress at adulthood, DAT binding was significantly lower in the nucleus accumbens in both the C-section group and the anoxic group, compared to vaginal birth. It is concluded that a history of birth complications can alter the manner in which DAT is regulated by stress in the adult rat brain.

Departments of Psychiatry and of Neurology and Neurosurgery, McGill University, Douglas Hospital Research Centre, 6875 LaSalle Boulevard, Verdun, Quebec, Canada H4H 1R3

CACorresponding Author

Received 18 October 2001 accepted 23 November 2001

© 2002 Lippincott Williams & Wilkins, Inc.