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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1992-7-31
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pubmed:abstractText |
We have studied Ca2+ voltage-gated channels of immature rat Sertoli cells by measuring intracellular Ca2+ concentration and its variation following administration of various agents in fura-2-loaded, confluent monolayers in culture. Our findings indicate that the basal Ca2+ intracellular level is about 100 nM, a value that falls within the range found in most eukaryotic cells. The intracellular Ca2+ level is rapidly increased by fetal bovine serum through release of intracellularly stored Ca2+ and opening of membrane cation channels. Substantial Ca2+ influx in rat Sertoli cells seems to be mediated by voltage-gated cation channels, which are sensitive to nifedipine, nicardipine, and omega-conotoxin. To investigate whether FSH, which controls several morphological and biochemical events of prepubertal Sertoli cells, modified Ca2+ influx in this cell type, we analyzed the cell response to acute FSH administration. The results show that, although not influencing the basal concentration of Ca2+, FSH decreases intracellular calcium influx induced by membrane depolarization. Similar data were also obtained by adding dibutyryl cAMP to the external medium and by increasing endogenous cAMP.
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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 Channel Blockers,
http://linkedlifedata.com/resource/pubmed/chemical/Calcium Channels,
http://linkedlifedata.com/resource/pubmed/chemical/Follicle Stimulating Hormone,
http://linkedlifedata.com/resource/pubmed/chemical/Gramicidin,
http://linkedlifedata.com/resource/pubmed/chemical/Lanthanum,
http://linkedlifedata.com/resource/pubmed/chemical/Potassium Chloride,
http://linkedlifedata.com/resource/pubmed/chemical/lanthanum chloride
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pubmed:status |
MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
0006-3363
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
46
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
414-8
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1377510-Animals,
pubmed-meshheading:1377510-Calcium,
pubmed-meshheading:1377510-Calcium Channel Blockers,
pubmed-meshheading:1377510-Calcium Channels,
pubmed-meshheading:1377510-Cell Membrane,
pubmed-meshheading:1377510-Follicle Stimulating Hormone,
pubmed-meshheading:1377510-Gramicidin,
pubmed-meshheading:1377510-Ion Channel Gating,
pubmed-meshheading:1377510-Lanthanum,
pubmed-meshheading:1377510-Male,
pubmed-meshheading:1377510-Membrane Potentials,
pubmed-meshheading:1377510-Potassium Chloride,
pubmed-meshheading:1377510-Rats,
pubmed-meshheading:1377510-Rats, Inbred Strains,
pubmed-meshheading:1377510-Sertoli Cells
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pubmed:year |
1992
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pubmed:articleTitle |
Voltage-gated calcium channels in rat Sertoli cells.
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pubmed:affiliation |
Institute of Histology and General Embryology, University La Sapienza, Rome, Italy.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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