Linked Life Data

20050994

Source:http://linkedlifedata.com/resource/pubmed/id/20050994

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2010-6-29
pubmed:abstractText
Sleep is important for brain function and cognitive performance. Sleep deprivation (SD) may affect subsequent learning capacity and ability to form new memories, particularly in the case of hippocampus-dependent tasks. In the present study we examined whether SD for 6 or 12 h during the normal resting phase prior to learning affects hippocampus-dependent working memory in mice. In addition, we determined effects of SD on hippocampal glutamate alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors and their regulatory pathways, which are crucially involved in working memory. After 12 h SD, but not yet after 6 h, spatial working memory in a novel arm recognition task was significantly impaired. This deficit was not likely due to stress as corticosterone levels after SD were not significantly different between groups. In parallel with the change in cognitive function, we found that 12 h SD significantly reduced hippocampal AMPA receptor phosphorylation at the GluR1-S845 site, which is important for incorporation of the receptors into the membrane. SD did not affect protein levels of cyclic-AMP-dependent protein kinase A (PKA) or phosphatase calcineurin (CaN), which regulate GluR1 phosphorylation. However, SD did reduce the expression of the scaffolding molecule A-kinase anchoring protein 150 (AKAP150), which binds and partly controls the actions of PKA and CaN. In conclusion, a relatively short SD during the normal resting phase may affect spatial working memory in mice by reducing hippocampal AMPA receptor function through a change in AKAP150 levels. Together, these findings provide further insight into the possible mechanism of SD-induced hippocampal dysfunction and memory impairment.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1365-2869
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
19
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
280-8
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Sleep deprivation impairs spatial working memory and reduces hippocampal AMPA receptor phosphorylation.
pubmed:affiliation
Department of Molecular Neurobiology, Center for Behavior and Neurosciences, University of Groningen, Haren, the Netherlands.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't