Abstract
TOLBERT, L. C., T. N. THOMAS, L. D. MIDDAUGH AND J. W. ZEMP. Ascorbate blocks amphetamine-induced turning behavior in rats with unilateral nigro-striatal lesions. BRAIN RES. BULL. 4(1) 43–48, 1979.—Unilateral nigro-striatal lesions were produced in rats using 6-hydroxydopamine. Intraperitoneal injections of amphetamine induced circling behavior in these rats due to release of striatal dopamine contralateral to the lesion. Intraperitoneal injections of 1 g/kg of ascorbic acid elevated brain ascorbate. Ascorbate, like other drugs blocking dopamine receptors, attenuated the amphetamine-induced turning behavior. Thus, ascorbic acid might have a role in regulating dopaminergic transmission and could be of therapeutic value in disorders involving functional dopamine excess.
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