The A-current modulates learning via NMDA receptors containing the NR2B subunit.
The A-current modulates learning via NMDA receptors containing the NR2B subunit.
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DOI:
10.1371/journal.pone.0024915
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发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
Carrión AM
中科院分区:
文献类型:
--
作者:
Fontán-Lozano Á;Suárez-Pereira I;González-Forero D;Carrión AM
Synaptic plasticity involves short- and long-term events, although the molecular mechanisms that underlie these processes are not fully understood. The transient A-type K+ current (IA) controls the excitability of the dendrites from CA1 pyramidal neurons by regulating the back-propagation of action potentials and shaping synaptic input. Here, we have studied how decreases in IA affect cognitive processes and synaptic plasticity. Using wild-type mice treated with 4-AP, an IA inhibitor, and mice lacking the DREAM protein, a transcriptional repressor and modulator of the IA, we demonstrate that impairment of IA decreases the stimulation threshold for learning and the induction of early-LTP. Hippocampal electrical recordings in both models revealed alterations in basal electrical oscillatory properties toward low-theta frequencies. In addition, we demonstrated that the facilitated learning induced by decreased IA requires the activation of NMDA receptors containing the NR2B subunit. Together, these findings point to a balance between the IA and the activity of NR2B-containing NMDA receptors in the regulation of learning.
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影响因子:
3.5
作者:
Fontan-Lozano, Angela;Suarez-Pereira, Irene;Manuel Carrion, Angel
通讯作者:
Manuel Carrion, Angel
影响因子:
5.6
作者:
Kim, Jinhyun;Hoffman, Dax A.
通讯作者:
Hoffman, Dax A.
影响因子:
2
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Schrader, Laura A.
影响因子:
9.2
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Manuel Carrion, Angel
影响因子:
16.2
作者:
Kim, Jinhyun;Jung, Sung-Cheri;Hoffman, Dax A.
通讯作者:
Hoffman, Dax A.