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- W2012989280 abstract "A toxin produced by legumes of the genus Astragalus and Arthrinium fungi, 3-NPA is a suicide inhibitor of succinate dehydrogenase and causes acute encephalopathy and late onset dystonia. It has been suggested that dopamine (DA) toxicity plays a role in 3-NPA induced brain damage. In order to simulate natural conditions of toxicant intake, adult, male, Sprague–Dawley rats were exposed to 3-NPA weekly for 24-h periods at 10 and 20 mg/40 ml in drinking water. This dosing regimen continued for 3 months with animals from both high and low dose groups sacrificed at the end of each month. Dopamine and its metabolites, 3,4-dihydroxylphenylacetic acid (DOPAC) and homovanillic acid (HVA), were assessed by HPLC-EC in the frontal cortex (FC) and caudate nucleus (CN). Increases of DA concentration were seen in both low and high dose groups in the CN after 1 and 3 months of dosing and in the FC after 2 months of exposure. An increase in DA turnover was observed in the CN of the high dose group following 2 months of dosing. Data suggest an activation of the dopaminergic system after long-term, intermittent exposure to 3-NPA. The production of radical oxygen species associated with DA metabolism may contribute to 3-NPA-induced neurotoxicity." @default.
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- W2012989280 date "2000-07-01" @default.
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- W2012989280 title "Dopamine toxicity following long term exposure to low doses of 3-nitropropionic acid (3-NPA) in rats" @default.
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- W2012989280 doi "https://doi.org/10.1016/s0378-4274(00)00214-9" @default.
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