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Plos Biology : Facilitation of Ampa Receptor Synaptic Delivery as a Molecular Mechanism for Cognitive Enhancement, Volume 10

By Scheiffele, Peter

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Book Id: WPLBN0003922276
Format Type: PDF eBook :
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Reproduction Date: 2015

Title: Plos Biology : Facilitation of Ampa Receptor Synaptic Delivery as a Molecular Mechanism for Cognitive Enhancement, Volume 10  
Author: Scheiffele, Peter
Volume: Volume 10
Language: English
Subject: Journals, Science, Biology
Collections: Periodicals: Journal and Magazine Collection (Contemporary), PLoS Biology
Historic
Publication Date:
Publisher: Plos

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Scheiffele, P. (n.d.). Plos Biology : Facilitation of Ampa Receptor Synaptic Delivery as a Molecular Mechanism for Cognitive Enhancement, Volume 10. Retrieved from http://netlibrary.net/


Description
Description : Cell adhesion molecules and downstream growth factor-dependent signaling are critical for brain development and synaptic plasticity, and they have been linked to cognitive function in adult animals. We have previously developed a mimetic peptide (FGL) from the neural cell adhesion molecule (NCAM) that enhances spatial learning and memory in rats. We have now investigated the cellular and molecular basis of this cognitive enhancement, using biochemical, morphological, electrophysiological, and behavioral analyses. We have found that FGL triggers a long-lasting enhancement of synaptic transmission in hippocampal CA1 neurons. This effect is mediated by a facilitated synaptic delivery of AMPA receptors, which is accompanied by enhanced NMDA receptor-dependent long-term potentiation (LTP). Both LTP and cognitive enhancement are mediated by an initial PKC activation, which is followed by persistent CaMKII activation. These results provide a mechanistic link between facilitation of AMPA receptor synaptic delivery and improved hippocampaldependent learning, induced by a pharmacological cognitive enhancer.

 

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