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Fear conditioning drives profilin into amygdala dendritic spines

Fear conditioning drives profilin into amygdala dendritic spines Changes in spine morphology may underlie memory formation, but the molecular mechanisms that subserve such alterations are poorly understood. Here we show that fear conditioning in rats leads to the movement of profilin, an actin polymerization–regulatory protein, into dendritic spines in the lateral amygdala and that these spines undergo enlargements in their postsynaptic densities (PSDs). A greater proportion of profilin-containing spines with enlarged PSDs could contribute to the enhancement of associatively induced synaptic responses in the lateral amygdala following fear learning. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Neuroscience Springer Journals

Fear conditioning drives profilin into amygdala dendritic spines

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References (14)

Publisher
Springer Journals
Copyright
Copyright © 2006 by Nature Publishing Group
Subject
Biomedicine; Biomedicine, general; Neurosciences; Behavioral Sciences; Biological Techniques; Neurobiology; Animal Genetics and Genomics
ISSN
1097-6256
eISSN
1546-1726
DOI
10.1038/nn1672
Publisher site
See Article on Publisher Site

Abstract

Changes in spine morphology may underlie memory formation, but the molecular mechanisms that subserve such alterations are poorly understood. Here we show that fear conditioning in rats leads to the movement of profilin, an actin polymerization–regulatory protein, into dendritic spines in the lateral amygdala and that these spines undergo enlargements in their postsynaptic densities (PSDs). A greater proportion of profilin-containing spines with enlarged PSDs could contribute to the enhancement of associatively induced synaptic responses in the lateral amygdala following fear learning.

Journal

Nature NeuroscienceSpringer Journals

Published: Mar 19, 2006

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