Title |
Contribution of different classes of glutamate receptors in the corticostriatal polysynaptic responses from striatal direct and indirect projection neurons
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Published in |
BMC Neuroscience, June 2013
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DOI | 10.1186/1471-2202-14-60 |
Pubmed ID | |
Authors |
Bianca J Vizcarra-Chacón, Mario A Arias-García, Maria B Pérez-Ramírez, Edén Flores-Barrera, Dagoberto Tapia, Rene Drucker-Colin, José Bargas, Elvira Galarraga |
Abstract |
Previous work showed differences in the polysynaptic activation of GABAergic synapses during corticostriatal suprathreshold responses in direct and indirect striatal projection neurons (dSPNs and iSPNs). Here, we now show differences and similarities in the polysynaptic activation of cortical glutamatergic synapses on the same responses. Corticostriatal contacts have been extensively studied. However, several questions remain unanswered, e.g.: what are the differences and similarities in the responses to glutamate in dSPNs and iSPNs? Does glutamatergic synaptic activation exhibits a distribution of latencies over time in vitro? That would be a strong suggestion of polysynaptic cortical convergence. What is the role of kainate receptors in corticostriatal transmission? Current-clamp recordings were used to answer these questions. One hypothesis was: if prolonged synaptic activation distributed along time was present, then it would be mainly generated from the cortex, and not from the striatum. |
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