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Abstract
The present study with rat striatal and cortical synaptosomes evaluated the effect of dexamethasone (300 μg/kg i.p./day) with and without simultaneous adrenalectomy on the oxidative stress induced by 3-nitropropionic acid (20 mg/kg/day for 4 days). Adrenalectomy enhanced the oxidative stress induced by 3-nitropropionic acid. These changes were prevented by previous and simultaneous administration of dexamethasone. Adrenalectomy alone induced oxidative stress with decreases in succinate dehydrogenase activity. Our results revealed that adrenal glucocorticoids, and especially dexamethasone (synthetic glucocorticoid), have a protective effect against oxidative stress induced by 3-nitropropionic acid in some brain regions of the Wistar rat.
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