D1 and D2 dopamine-receptor modulation of striatal glutamatergic signaling in striatal medium spiny neurons.
Dopamine shapes a wide variety of psychomotor functions. This is mainly accomplished by modulating cortical and thalamic glutamatergic signals impinging upon principal medium spiny neurons (MSNs) of the striatum. Several lines of evidence suggest that dopamine D1 receptor signaling enhances dendritic excitability and glutamatergic signaling in striatonigral MSNs, whereas D2 receptor signaling exerts the opposite effect in striatopallidal MSNs. The functional antagonism between these two major striatal dopamine receptors extends to the regulation of synaptic plasticity. Recent studies, using transgenic mice in which cells express D1 and D2 receptors, have uncovered unappreciated differences between MSNs that shape glutamatergic signaling and the influence of DA on synaptic plasticity. These studies have also shown that long-term alterations in dopamine signaling produce profound and cell-type-specific reshaping of corticostriatal connectivity and function.
Surmeier
D James
DJ
Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA. j-surmeier@northwestern.edu <j-
Ding
Jun
J
Day
Michelle
M
Wang
Zhongfeng
Z
Shen
Weixing
W
D000818:Animals; D003342:Corpus Striatum / Q000378:metabolism*; D004298:Dopamine / Q000378:metabolism; D005973:Glutamine / Q000378:metabolism*; D006801:Humans; D009434:Neural Pathways / Q000378:metabolism; D009473:Neuronal Plasticity / Q000502:physiology; D009474:Neurons / Q000378:metabolism*; D017447:Receptors, Dopamine D1 / Q000378:metabolism*; D017448:Receptors, Dopamine D2 / Q000378:metabolism*; D015398:Signal Transduction / Q000502:physiology*; D009435:Synaptic Transmission / Q000502:physiology
D017447:Receptors, Dopamine D1; D017448:Receptors, Dopamine D2; D005973:Glutamine; D004298:Dopamine