Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1999-3-16
pubmed:abstractText
The release of intracellular calcium (Ca2+) via either inositol 1,4, 5-trisphosphate receptors (IP3R) or ryanodine receptors (RyR) activates a wide variety of signaling pathways in virtually every type of cell. In the present study we demonstrate that at early stages of development IP3R mRNA and functional IP3-gated Ca2+ release channels are widely expressed in virtually all tissues in murine embryos. As organogenesis proceeds, more specialized RyR channels are expressed in many cell types and the triggering mechanisms for intracellular Ca2+ release become more diverse to include IP3-dependent and voltage-dependent and Ca2+-induced Ca2+ release. As development proceeds virtually all cell types continue to express IP3R channels but in excitable cells including skeletal and cardiac muscles the major Ca2+ release channels are RyRs. This developmental switch from predominantly IP3-mediated to both IP3-mediated and IP3-independent pathways for intracellular Ca2+ release is consistent with data showing that IP3R plays an important regulatory role in cellular proliferation and apoptosis, whereas RyR is required for other cellular functions including muscle contraction.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0012-1606
pubmed:author
pubmed:copyrightInfo
Copyright 1999 Academic Press.
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
206
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
163-77
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed-meshheading:9986730-Animals, pubmed-meshheading:9986730-Apoptosis, pubmed-meshheading:9986730-Calcium Channels, pubmed-meshheading:9986730-Female, pubmed-meshheading:9986730-Gene Expression Regulation, Developmental, pubmed-meshheading:9986730-Gestational Age, pubmed-meshheading:9986730-Heart, pubmed-meshheading:9986730-In Situ Hybridization, pubmed-meshheading:9986730-Inositol 1,4,5-Trisphosphate, pubmed-meshheading:9986730-Inositol 1,4,5-Trisphosphate Receptors, pubmed-meshheading:9986730-Intracellular Fluid, pubmed-meshheading:9986730-Mice, pubmed-meshheading:9986730-Myocardium, pubmed-meshheading:9986730-Pregnancy, pubmed-meshheading:9986730-RNA, Messenger, pubmed-meshheading:9986730-Receptors, Cytoplasmic and Nuclear, pubmed-meshheading:9986730-Ryanodine Receptor Calcium Release Channel, pubmed-meshheading:9986730-Tissue Distribution
pubmed:year
1999
pubmed:articleTitle
Intracellular calcium release channel expression during embryogenesis.
pubmed:affiliation
Molecular Cardiology Program, Divisions of Circulatory Physiology and Cardiology, Department of Medicine, New York, New York, 10032, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't