Linked Life Data

11930149

Source:http://linkedlifedata.com/resource/pubmed/id/11930149

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2002-4-3
pubmed:abstractText
The functional role of BK channels, which are consistently expressed in glioma cells, is not clear. Here we show that the BK channels are regularly active in human 1321N1 astrocytoma cells at physiological membrane potentials. The proliferation of the cells at the physiological external [K+] of 5 mM is compared with that at the elevated external [K+] of 20 mM, simulating the situation in rapidly growing, necrotic tumours in vivo. High extracellular [K+] in the range 10-30 mM significantly increases the proliferation of 1321N1 cells. This K+ induced proliferation can be completely abolished by applying the specific BK channel blockers iberiotoxin (IBTX) or 1 mM tetraethylammonium (TEA). Neither blocker has any effect on cell growth at 5 mM [K+]e. These findings indicate a particular role of BK channels in astrocytoma cell proliferation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0959-4965
pubmed:author
pubmed:issnType
Print
pubmed:day
25
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
403-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
BK channel blockers inhibit potassium-induced proliferation of human astrocytoma cells.
pubmed:affiliation
Institute of Pathology (Neuropathology), Friedrich Schiller University Jena, Bachstr. 18, D-07740 Jena, Germany.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't