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Brain Res. 1987 May 5;410(2):371-4.

Reversible serotoninergic neurotoxicity of N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in mouse striatum studied by neurochemical and immunohistochemical approaches.


Effects of N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) on serotonin (5-HT) were studied in mouse striatum. The 5-HT level was significantly reduced at 1 week after MPTP, though returned at 4 weeks. The level of 5-hydroxyindoleacetic acid (5-HIAA) increased at both 1 and 4 weeks. The ratio of increase in 5-HT induced by pargyline administration was larger in MPTP-pretreated mice than in vehicle-pretreated controls at 1 week, although it was identical in both groups at 4 weeks. The 5-HT immunohistochemical study confirmed the biochemical change of 5-HT. These results suggest that MPTP functionally affects the 5-HT metabolism in mouse striatum.

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