Author:
Herrero M.-T.,Levy R.,Ruberg M.,Luquin M. R.,Villares J.,Guillen J.,Faucheux B.,Javoy-Agid F.,Guridi J.,Agid Y.,Obeso J. A.,Hirsch E. C.
Abstract
To examine the consequences of nigrostriatal denervation and L-dopa treatment on the basal ganglia output system, we analyzed, by quantitative in situ hybridization, the messenger RNA coding for glutamic acid decarboxylase (Mr 67,000) (GAD67 mRNA) in pallidal cells from patients with Parkinson's disease (PD), monkeys rendered parkinsonian by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) receiving or not receiving L-dopa, and their respective control subjects. In MPTP-treated monkeys, the expression of GAD67 mRNA was increased in cells from the internal pallidum, and this effect was abolished by L-dopa treatment. There were no differences in the levels of GAD67 mRNA between patients with PD, who were all treated with L-dopa, and control subjects. These results indicate that the level of GAD67 mRNA is increased in the cells of the internal pallidum after nigrostriatal dopaminergic denervation and that this increase can be reversed by L-dopa therapy.NEUROLOGY 1996;47: 219-224
Publisher
Ovid Technologies (Wolters Kluwer Health)
Cited by
76 articles.
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