Full metadata record
DC Field | Value | Language |
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dc.contributor.author | 서석효 | - |
dc.date.accessioned | 2016-08-28T11:08:34Z | - |
dc.date.available | 2016-08-28T11:08:34Z | - |
dc.date.issued | 1997 | - |
dc.identifier.issn | 0031-6768 | - |
dc.identifier.other | OAK-12504 | - |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/228638 | - |
dc.description.abstract | The effects of myosin light chain kinase inhibitors on muscarinic stimulation-activated nonselective cationic current (I(CCh)) in guinea-pig gastric antral myocytes were studied using the whole-cell patch-clamp technique. I(CCh) was induced by carbachol (CCh, 50 μM) at a holding potential of -30 mV or -60 mV. ML-7, a chemical inhibitor of myosin light chain kinase (MLCK), inhibited I(CCh) concentration dependently in a reversible manner (53 ± 8.6% at 1 μM, mean ± SE, n = 11). In addition, amplitudes of I(CCh) were only 37 ± 2.7% of the daily control values following the addition of a peptide inhibitor of MLCK to the pipette solution. On the other hand, ML-7 had an inhibitory effect on voltage-operated Ca 2+ channel current. The peak value of Ba 2+ current at 0 mV was reduced to 35 ± 7.4% (n = 9) by 3 μM of ML-7. As I(CCh) is known to have an intracellular Ca 2+ dependence, we tried to exclude the possibility that ML-7 inhibited I(CCh) indirectly via suppression of Ca 2+ current and the similar inhibitory effects of ML7 on I(CCh) were confirmed under the following conditions: (1) clamp of membrane potential at -60 mV; (2) clamp of intracellular [Ca 2+] to 1 μM by 10 mM BAPTA; (3) pre-inhibition of Ca 2+ channel by verapamil. Different from the effects on I(CCh), ML-7 barely inhibited the same cationic current induced by guanosine 5'-O-(3-thiotriphosphate) (GTP[γS], 0.2 mM) in the pipette solution. These results suggest that a Ca 2+-calmodulin-MLCK-dependent pathway can modulate the activation of I(CCh) in guinea-pig gastric antral myocytes. | - |
dc.language | English | - |
dc.title | Effects of myosin light chain kinase inhibitors on caubachol-activated nonselective cationic current in guinea-pig gastric myocytes | - |
dc.type | Article | - |
dc.relation.issue | 4 | - |
dc.relation.volume | 434 | - |
dc.relation.index | SCI | - |
dc.relation.index | SCIE | - |
dc.relation.index | SCOPUS | - |
dc.relation.startpage | 346 | - |
dc.relation.lastpage | 353 | - |
dc.relation.journaltitle | Pflugers Archiv European Journal of Physiology | - |
dc.identifier.doi | 10.1007/s004240050407 | - |
dc.identifier.scopusid | 2-s2.0-0030801471 | - |
dc.author.google | Kim Y.C. | - |
dc.author.google | Kim S.J. | - |
dc.author.google | Kang T.M. | - |
dc.author.google | Suh S.H. | - |
dc.author.google | So I. | - |
dc.author.google | Kim K.W. | - |
dc.contributor.scopusid | 서석효(55666113100) | - |
dc.date.modifydate | 20230901081001 | - |