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pubmed-article:11355881pubmed:abstractTextThe endogenous dopamine-derived neurotoxin salsolinol was found to decrease survival in the dopaminergic neuronal cell line RCSN-3, derived from adult rat substantia nigra in a concentration-dependent manner (208 microM salsolinol induced a 50% survival decrease). Incubation of RCSN-3 cells with 100 micro;M dicoumarol and salsolinol significantly decreased cell survival by 2.5-fold (P < 0.001), contrasting with a negligible effect on RCHT cells, which exhibited nearly a 5-fold lower nomifensine-insensitive dopamine uptake. The levels of catalase and glutathione peroxidase mRNA were decreased when RCSN-3 cells were treated with 100 microM salsolinol alone or in the presence of 100 microM dicoumarol. In vitro oxidation of salsolinol to o-quinone catalyzed by lactoperoxidase gave the quinone methide and 1,2-dihydro-1-methyl-6,7-isoquinoline diol as final products of salsolinol oxidation as determined by NMR analysis. Evidence of the formation of salsolinol o-semiquinone radical has been provided by ESR studies during one-electron oxidation of salsolinol catalyzed by lactoperoxidase.lld:pubmed
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pubmed-article:11355881pubmed:copyrightInfoCopyright 2001 Academic Press.lld:pubmed
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pubmed-article:11355881pubmed:articleTitlePossible role of salsolinol quinone methide in the decrease of RCSN-3 cell survival.lld:pubmed
pubmed-article:11355881pubmed:affiliationProgramme of Molecular and Clinical Pharmacology, ICBM, Faculty of Medicine, University of Chile, Santiago, Chile.lld:pubmed
pubmed-article:11355881pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:11355881pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed