Abstract
The differentiation of striatal GABAergic neurons coincides with the perinatal establishment of nigrostriatal dopaminergic synaptic connections. We have shown previously that dopamine stimulates the maturation of striatal GABAergic neurons. Since BDNF also regulates the development of GABAergic cells, we hypothesized that dopamine might affect striatal BDNF expression. The influence of dopamine on BDNF protein/mRNA and trkB mRNA levels was studied in neuronal and astroglia cultures of the mouse striatum. Stimulation with dopamine and a dopamine D1 receptor agonist increased BDNF mRNA and protein but not trkB mRNA in neuronal cultures. Our data indicate a potential role for dopamine in the developmental regulation of striatal BDNF expression and suggest that dopamine effects on GABAergic cells may be intertwined with BDNF action.
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