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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1988-4-14
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pubmed:abstractText |
Neuronal calcium channels can be modulated by changes in membrane potential or by activation of channel-associated receptors. The latter may be modulated by guanine nucleotide binding proteins. NaF, which activates guanine nucleotide binding proteins, caused a large stimulation of 45Ca2+ uptake by synaptosomes prepared from rat brain. Stimulation of 45Ca2+ influx by NaF (i) was apparent in media containing either 5 mM-K+ or 50 mM-K+, (ii) was slower than the fast-phase of voltage-dependent 45Ca2+ influx but continued for a longer period of time than did depolarization-induced 45Ca2+ influx, and (iii) was not mimicked or modified by a number of drugs, including ouabain, dinitrophenol, sodium azide or sodium vanadate. These results are consistent with the hypothesis that NaF activates a guanine nucleotide binding protein associated with receptor-coupled calcium channels, resulting in stimulation of calcium influx.
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pubmed:grant | |
pubmed:language |
eng
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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/Calcium Radioisotopes,
http://linkedlifedata.com/resource/pubmed/chemical/Ion Channels,
http://linkedlifedata.com/resource/pubmed/chemical/Potassium,
http://linkedlifedata.com/resource/pubmed/chemical/Sodium Fluoride
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pubmed:status |
MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
0006-291X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
15
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pubmed:volume |
151
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
774-80
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:2450544-Animals,
pubmed-meshheading:2450544-Brain,
pubmed-meshheading:2450544-Calcium,
pubmed-meshheading:2450544-Calcium Radioisotopes,
pubmed-meshheading:2450544-Ion Channels,
pubmed-meshheading:2450544-Kinetics,
pubmed-meshheading:2450544-Male,
pubmed-meshheading:2450544-Potassium,
pubmed-meshheading:2450544-Rats,
pubmed-meshheading:2450544-Rats, Inbred Strains,
pubmed-meshheading:2450544-Sodium Fluoride,
pubmed-meshheading:2450544-Synaptosomes
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pubmed:year |
1988
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pubmed:articleTitle |
Synaptosomal calcium influx is activated by sodium fluoride.
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pubmed:affiliation |
Department of Pharmacology, University of Alabama, Birmingham 35294.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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