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Effects of Systemic Administration of 1‐Methyl‐4‐Phenyl‐1,2,3,6‐Tetrahydropyridine to Mice on Tyrosine Hydroxylase, l‐3,4‐Dihydroxyphenylalanine Decarboxylase, Dopamine β‐Hydroxylase, and Monoamine Oxidase Activities in the Striatum and Hypothalamus
Author(s) -
Mogi Makio,
Harada Minoru,
Kojima Kohichi,
Kiuchi Kazutoshi,
Nagatsu Toshiharu
Publication year - 1988
Publication title -
journal of neurochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.75
H-Index - 229
eISSN - 1471-4159
pISSN - 0022-3042
DOI - 10.1111/j.1471-4159.1988.tb10572.x
Subject(s) - mptp , tyrosine hydroxylase , dopaminergic , striatum , dopamine , monoamine oxidase , endocrinology , medicine , nigrostriatal pathway , dihydroxyphenylalanine , chemistry , aromatic l amino acid decarboxylase , monoamine oxidase b , substantia nigra , biology , enzyme , biochemistry
The effects of 1‐methyl‐4‐phenyl‐l,2,3,6‐tetrahydropyridine (MPTP) (30 mg/kg subcutaneously per day for 8 days) to C57BL/6N mice were studied on tyrosine hydroxylase (TH), l‐3,4‐dihydroxyphenylalanine decarboxylase (DDC), and monoamine oxidase (MAO) activities in the striatum, and TH, DDC, dopamine‐β‐hydroxylase (DBH), and MAO activities in the hypothalamus. Treatment with MPTP led to a large decrease in TH activity and a parallel decrease in DDC activity in the striatum, as compared with the saline controls. In contrast, MPTP administration did not cause a decrease of the activities of TH, DDC, and DBH in the hypothalamus. There was also no reduction in MAO activities of striatum and hypothalamus. These data indicate that MPTP administration to mice results in specific degeneration of the dopaminergic nigrostriatal pathway and that DDC in the mouse striatum may mainly be localized in the dopaminergic neurons with TH.