Linked Life Data

15683738

Source:http://linkedlifedata.com/resource/pubmed/id/15683738

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2005-2-1
pubmed:abstractText
It has been proposed that cytoskeleton plays a key positive role in the activation of capacitative calcium entry (CCE), which supported the secretion-like hypothesis for the mechanisms underlying this process. However, its role on CCE in native smooth muscle is unknown. Here we demonstrate that CCE in isolated gallbladder myocytes was enhanced by cytochalasin D or latrunculin A treatments (agents that cause actin disassembly) whereas it was reduced by jasplakinolide treatment (which causes actin polymerization), suggesting that actin cytoskeleton acts as a barrier in CCE. In addition, we show for the first time that depletion of intracellular Ca2+ stores by thapsigargin and cholecystokinin in BAPTA-loaded cells induced a decrease in F-actin content that was consistent with a link between CCE and actin reorganization. In conclusion, these data suggest an active participation of actin reorganization in the implementation of CCE and support a conformational coupling model for this process in naive smooth muscle cells.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0898-6568
pubmed:author
pubmed:issnType
Print
pubmed:volume
17
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
635-45
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Disruption of the filamentous actin cytoskeleton is necessary for the activation of capacitative calcium entry in naive smooth muscle cells.
pubmed:affiliation
Department of Physiology, University of Extremadura, 10071 Cáceres, Spain.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't