Title |
Ifenprodil reduces excitatory synaptic transmission by blocking presynaptic P/Q type calcium channels
|
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Published in |
Journal of Neurophysiology, December 2011
|
DOI | 10.1152/jn.01066.2011 |
Pubmed ID | |
Authors |
Andrew J. Delaney, John M. Power, Pankaj Sah |
Abstract |
Ifenprodil is a selective blocker of NMDA receptors that are heterodimers composed of GluN1/GluN2B subunits. This pharmacological profile has been extensively used to test the role of GluN2B-containing NMDA receptors in learning and memory formation. However, ifenprodil has also been reported to have actions at a number of other receptors, including high voltage-activated calcium channels. Here we show that, in the basolateral amygdala, ifenprodil dose dependently blocks excitatory transmission to principal neurons by a presynaptic mechanism. This action of ifenprodil has an IC(50) of ~10 μM and is fully occluded by the P/Q type calcium channel blocker ω-agatoxin. We conclude that ifenprodil reduces synaptic transmission in the basolateral amygdala by partially blocking P-type voltage-dependent calcium channels. |
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Geographical breakdown
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Spain | 1 | 3% |
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Unknown | 29 | 83% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 10 | 29% |
Researcher | 10 | 29% |
Professor | 5 | 14% |
Professor > Associate Professor | 2 | 6% |
Student > Bachelor | 2 | 6% |
Other | 1 | 3% |
Unknown | 5 | 14% |
Readers by discipline | Count | As % |
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Psychology | 1 | 3% |
Materials Science | 1 | 3% |
Other | 0 | 0% |
Unknown | 6 | 17% |