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- W2022943513 abstract "Abstract : The endogenous monoamine 1-methyl-1,2,3,4-tetrahydroisoquinoline has been shown to prevent the neurotoxic effect of MPP+ and other endogenous neurotoxins, which produce a parkinsonian-like syndrome in humans. We have tested its potential protective effect in vivo by measuring the protection of 1-methyl-1,2,3,4-tetrahydroisoquinoline in the neurotoxicity elicited by MPP+ in rat striatum by tyrosine hydroxylase immunocytochemistry. Because we know that cellular damage caused by MPP+ is primarily the result of mitochondrial respiratory inhibition at the complex I level, we have extended the study further to understand this protective mechanism. We found that the inhibitory effect on the mitochondrial respiration rate induced by MPP+ in isolated rat liver mitochondria and striatal synaptosomes was prevented by addition of 1-methyl-1,2,3,4-tetrahydroisoquinoline. This compound has no antioxidant capacity ; therefore, this property is not involved in its protective effect. Thus, we postulate that the preventive effect that 1-methyl-1,2,3,4-tetrahydroisoquinoline has on mitochondrial inhibition for MPP+ could be due to a “shielding effect,” protecting the energetic machinery, thus preventing energetic failure. These results suggest that this endogenous amine may protect against the effect of several parkinsonism-inducing compounds that are associated with progressive impairment of the mitochondrial function." @default.
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- W2022943513 date "2001-12-25" @default.
- W2022943513 modified "2023-10-02" @default.
- W2022943513 title "The Endogenous Amine 1-Methyl-1,2,3,4- Tetrahydroisoquinoline Prevents the Inhibition of Complex I of the Respiratory Chain Produced by MPP+" @default.
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- W2022943513 doi "https://doi.org/10.1046/j.1471-4159.2000.0750065.x" @default.
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