Oxidative metabolite of dopamine, 3,4-dihydroxyphenylacetaldehyde, induces dopamine release from PC12 cells by a Ca2+-independent mechanism
2002
Abstract 3,4-Dihydroxyphenylacetaldehyde (DOPALD), an oxidative metabolite of dopamine (DA), induced dose-dependent DA release from pheochromocytoma (PC12) cells without affecting leakage of lactate dehydrogenase from the cells. DOPALD-induced DA release was independent of extracellular Ca 2+ concentration and was not blocked by nifedipine, an L-type Ca 2+ channel antagonist. These results indicated a novel intrinsic role of DOPALD in dopaminergic nerve terminals that may take part in the activation of dopamine neurons.
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