Linked Life Data

9888523

Source:http://linkedlifedata.com/resource/pubmed/id/9888523

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3-4
pubmed:dateCreated
1999-4-13
pubmed:abstractText
Both T- and L-type calcium channels are expressed in bovine adrenal glomerulosa cells and both channels are sensitive to moderate depolarizations of the cell membrane induced by angiotensin II (AngII) or physiological concentrations of extracellular K+. These channels present distinct pharmacology, L-type channels being more sensitive to dihydropyridines, whereas T channels are inhibited by lower concentrations of mibefradil, a new type of calcium antagonist currently used for treating hypertension. The activity of these channels is also differently modulated by AngII, which inhibits T channels through activation of protein kinase C and L channels through a Pertussis toxin-sensitive G protein. Finally, whereas the activity of L-type channels is directly reflected on the levels of the cytosolic calcium concentration ([Ca2+]c), T-type channels are more closely related to the control of steroidogenesis, possibly through a kind of "calcium pipeline" linking the plasma membrane to the mitochondria. In conclusion, two types of calcium channels, with distinct functions and differential modulation by AngII, are activated by agonists of aldosterone biosynthesis in adrenal glomerulosa cells. Most importantly, these channels have distinct sensitivities to currently used antihypertensive therapeutic drugs.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0743-5800
pubmed:author
pubmed:issnType
Print
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
443-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:articleTitle
Duality of the voltage-dependent calcium influx in adrenal glomerulosa cells.
pubmed:affiliation
Division of Endocrinology & Diabetology, University Hospital, Geneva, Switzerland.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't