rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
2-3
|
pubmed:dateCreated |
1993-7-13
|
pubmed:abstractText |
The effect of trimebutine on the K+ current in rabbit ileal smooth muscle cells was investigated using the whole-cell patch-clamp technique. Trimebutine (10 microM) inhibited an outward current consisting of a Ca(2+)-dependent K+ current (IKCa) and Ca(2+)-independent K+ current (IKv), elicited by stepping from -80 to -20 mV or more positive. Trimebutine reduced dose dependently the IKv amplitude with an IC50 of 7.6 microM and IKCa amplitude with an IC50 of 23.5 microM. The IKv inhibition was neither voltage- nor use-dependent. Trimebutine (1-100 microM) decreased the amplitude and discharge rate of spontaneous transient outward currents. Trimebutine (30 microM) produced a sustained membrane depolarization of about 10 mV accompanied by a decrease in membrane conductance. The results suggest that the excitatory effects of trimebutine on the gastrointestinal tract may be attributable to the inhibitory action on the K+ current.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Apr
|
pubmed:issn |
0014-2999
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
28
|
pubmed:volume |
235
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
197-203
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:8389715-Animals,
pubmed-meshheading:8389715-Calcium,
pubmed-meshheading:8389715-Calcium Channels,
pubmed-meshheading:8389715-Electrophysiology,
pubmed-meshheading:8389715-Ileum,
pubmed-meshheading:8389715-Male,
pubmed-meshheading:8389715-Membrane Potentials,
pubmed-meshheading:8389715-Muscle, Smooth,
pubmed-meshheading:8389715-Potassium,
pubmed-meshheading:8389715-Potassium Channels,
pubmed-meshheading:8389715-Rabbits,
pubmed-meshheading:8389715-Tetraethylammonium,
pubmed-meshheading:8389715-Tetraethylammonium Compounds,
pubmed-meshheading:8389715-Trimebutine
|
pubmed:year |
1993
|
pubmed:articleTitle |
Effect of trimebutine on K+ current in rabbit ileal smooth muscle cells.
|
pubmed:affiliation |
Department of Veterinary Science, Faculty of Agriculture, Gifu University, Japan.
|
pubmed:publicationType |
Journal Article,
In Vitro
|