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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4-5
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pubmed:dateCreated |
1989-1-26
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pubmed:abstractText |
The concentration of cytosolic free calcium ([Ca2+]i) in living cells is far below than that of plasma and must be extruded against a large electrochemical gradient. Cytosolic Ca2+ is also concentrated by two organelles, the high-affinity, low-capacity endoplasmic reticulum and the low-affinity, high-capacity mitochondria. In liver, different hormones and neurotransmitters mobilize cell glucose by using Ca2+ as an amplifier signal. These agonists promote a fast and large increase in [Ca2+]i as detected by intracellular fluorescent indicators resulting from permeabilization of the endoplasmic reticulum and stimulation of the Ca2+ influx. The hormone action is mediated by rapid hydrolysis of inositol lipids with formation of two messagers inositol [1,4,5]triphosphate and diacylglycerol. Certain bile acids also promote a pronounced release of Ca2+ from the endoplasmic reticulum in liver but independently of the hormone messengers. Mobilization of cell Ca2+ and/or H+ by these cell messengers is involved in a wide variety of other cell functions.
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pubmed:language |
fre
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Calcium,
http://linkedlifedata.com/resource/pubmed/chemical/Cations, Divalent,
http://linkedlifedata.com/resource/pubmed/chemical/Hormones,
http://linkedlifedata.com/resource/pubmed/chemical/Inositol 1,4,5-Trisphosphate,
http://linkedlifedata.com/resource/pubmed/chemical/Inositol Phosphates
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pubmed:status |
MEDLINE
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pubmed:issn |
0003-4266
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
49
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
358-61
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:3059979-Animals,
pubmed-meshheading:3059979-Calcium,
pubmed-meshheading:3059979-Cations, Divalent,
pubmed-meshheading:3059979-Cytoplasm,
pubmed-meshheading:3059979-Hormones,
pubmed-meshheading:3059979-Humans,
pubmed-meshheading:3059979-Inositol 1,4,5-Trisphosphate,
pubmed-meshheading:3059979-Inositol Phosphates,
pubmed-meshheading:3059979-Liver
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pubmed:year |
1988
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pubmed:articleTitle |
[Calcium and the liver].
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pubmed:affiliation |
Unité de Recherche INSERM U. 274 Physiologie et Pharmacologie Cellulaire, Université Paris-Sud, Orsay, France.
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pubmed:publicationType |
Journal Article,
English Abstract,
Review
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