Linked Life Data

8271659

Source:http://linkedlifedata.com/resource/pubmed/id/8271659

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
1994-2-3
pubmed:abstractText
To determine whether activations of K-channel and Na-K-ATPase are involved in the action of bronchodilating agents, we studied the effects of various K-channel blockers and ouabain, a Na-K-ATPase inhibitor, on the relaxant responses of canine airway smooth muscle in vitro. Addition of charybdotoxin (ChTx), a Ca-activated potassium channel blocker, and ouabain had no effect on the responses to verapamil and BRL 38227, but inhibited those to salbutamol, forskolin, DBcAMP, and nitroprusside. Apamin, a low-conductance K-channel blocker, and glibenclamide, an ATP-sensitive K-channel blocker, had no effect on the smooth muscle relaxation induced by any agents. The inhibitory effect of ChTx was predominant when the concentration of bronchodilator was low, whereas the effect of ouabain was observed in the presence of a high concentration of bronchodilator. These results suggest that Ca-activated K-channel and Na-K-ATPase may participate in the relaxation induced by bronchodilators that can raise intracellular cyclic nucleotides, and that the contribution of each component differs under different concentrations of the drugs.
pubmed:language
jpn
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0301-1542
pubmed:author
pubmed:issnType
Print
pubmed:volume
31
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1262-8
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
[Contribution of K-channel and Na-K-ATPase to the relaxant responses of canine bronchial smooth muscle to various bronchodilators].
pubmed:affiliation
First Department of Medicine, Tokyo Women's Medical College, Japan.
pubmed:publicationType
Journal Article, In Vitro, English Abstract