rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
1-3
|
pubmed:dateCreated |
1994-8-8
|
pubmed:abstractText |
The inhibitory effect of cytochalasin B on contraction of smooth muscle cells isolated from guinea-pig taenia coli was investigated. Cytochalasin B (10-70 microM) inhibited the high K+ (70 mM)-induced contraction in a dose-dependent manner, and the maximum and the half-maximum effects were obtained at 50 and 15 microM, respectively. Cytochalasin B (70 microM) decreased ATPase activity in skinned guinea-pig taenia coli. However, cytochalasin B (50 microM) had no significant effect on the voltage-dependent Ca2+ currents, the passive membrane properties or the membrane potential. Cytochalasin B also had no effect on the phosphorylation of 20 kDa myosin light chain induced by high K+ and cytosolic Ca2+ levels. These results suggest that the inhibition of contraction by cytochalasin B may be due to its effects on actin of microfilaments and contractile filaments of guinea-pig taenia coli smooth muscle cells.
|
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 |
1
|
pubmed:volume |
255
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
139-47
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:8026540-Actins,
pubmed-meshheading:8026540-Adenosine Triphosphatases,
pubmed-meshheading:8026540-Animals,
pubmed-meshheading:8026540-Calcium Channels,
pubmed-meshheading:8026540-Colon,
pubmed-meshheading:8026540-Cytochalasin B,
pubmed-meshheading:8026540-Cytosol,
pubmed-meshheading:8026540-Guinea Pigs,
pubmed-meshheading:8026540-Membrane Potentials,
pubmed-meshheading:8026540-Membranes,
pubmed-meshheading:8026540-Muscle, Smooth,
pubmed-meshheading:8026540-Muscle Contraction,
pubmed-meshheading:8026540-Myosin Subfragments,
pubmed-meshheading:8026540-Phosphorylation,
pubmed-meshheading:8026540-Potassium
|
pubmed:year |
1994
|
pubmed:articleTitle |
Effect of cytochalasin B on intestinal smooth muscle cells.
|
pubmed:affiliation |
Department of Physiology, School of Medicine, Sapporo Medical University, Japan.
|
pubmed:publicationType |
Journal Article,
In Vitro
|