Linked Life Data

10330011

Source:http://linkedlifedata.com/resource/pubmed/id/10330011

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5 Pt 1
pubmed:dateCreated
1999-6-7
pubmed:abstractText
The mechanisms underlying intracellular Ca2+ waves induced by either mechanical or receptor-mediated stimulation of myocytes isolated from the longitudinal muscle layer of the rabbit distal colon were compared using fura 2 and fluorescence videomicroscopy. Light focal mechanical deformation of the plasma membrane or focal application of substance P resulted in localized intracellular Ca2+ concentration ([Ca2+]i) transients that propagated throughout the cell. In both cases, the Ca2+ response consisted of a transient peak response followed by a delayed-phase response. Substance P-mediated [Ca2+]i responses involved generation of inositol 1,4, 5-trisphosphate and release of Ca2+ from thapsigargin-sensitive stores, whereas mechanically induced responses were partially (29%) dependent on La3+-sensitive influx of extracellular Ca2+ and partially on release of intracellular Ca2+ from thapsigargin-insensitive stores gated by ryanodine receptors. The delayed-phase response in both cases was dependent on extracellular Ca2+. However, although the response to substance P was sensitive to La3+, that after mechanical stimulation was not. In the later case, the underlying mechanism may involve capacitative Ca2+ entry channels that are activated after mechanical stimulation but not by substance P.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0002-9513
pubmed:author
pubmed:issnType
Print
pubmed:volume
276
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
G1204-12
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Calcium waves in colonic myocytes produced by mechanical and receptor-mediated stimulation.
pubmed:affiliation
CURE: Digestive Diseases Research Center/Neuroenteric Disease Program, Departments of Medicine and Physiology, University of California at Los Angeles, Los Angeles, California 90024, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.