Acetylcholine induces Ca-dependent K currents in rabbit endothelial cells.
Acetylcholine induces Ca-dependent K currents in rabbit endothelial cells.
复制标题
乙酰胆碱在兔内皮细胞中诱导 Ca 依赖性 K 电流。
DOI:
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发表时间:
1990
期刊:
影响因子:
--
通讯作者:
T. Sakai
中科院分区:
文献类型:
--
作者:
T. Sakai
Effects of acetylcholine (ACh) on the membrane potential and current recorded from endothelial cells dispersed from the rabbit aorta were investigated using the patch-clamp technique. ACh hyperpolarized the endothelial cell membrane. Using the whole-cell voltage-clamp procedure, ACh (10(-6) M) induced an outward current, and this current was blocked by atropine (10(-6) M). Application of either pirenzepine (3 x 10(-7) M) or AF-DX 116 (3 x 10(-6) M) slightly inhibited the ACh-induced outward current, and simultaneous application of these two blockers markedly inhibited the outward current. Application of caffeine (2 x 10(-2) M), ryanodine (10(-5) M) or heparin (10(-5) g/ml) reduced the amplitude of the ACh-induced outward current. A single-channel current recording using the patch-clamp technique revealed that ACh opens a Ca-dependent K-channel with a single-channel current conductance of 9 pS. These results indicate that both M1 and M2 receptor subtypes are present in endothelial cells of the rabbit aorta and that ACh activates the Ca-dependent K channel via release of Ca from intracellular store sites. In addition, methylene blue inhibited the ACh-induced outward current from the outside membrane.
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DOI:
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发表时间:
1985-03
期刊:
The Journal of pharmacology and experimental therapeutics
影响因子:
--
作者:
W. Martin;G. Villani;D. Jothianandan;R. Furchgott
通讯作者:
W. Martin;G. Villani;D. Jothianandan;R. Furchgott
影响因子:
--
作者:
ROUSSEAU, E;SMITH, JS;MEISSNER, G
通讯作者:
MEISSNER, G
影响因子:
15.9
作者:
MURAD, F
通讯作者:
MURAD, F
DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Worley,PF;Baraban,JM;Supattapone,S;Wilson,VS;Snyder,SH
通讯作者:
Snyder,SH
DOI:
10.1016/s0006-291x(88)81141-0
发表时间:
1988
影响因子:
3.1
作者:
Kobayashi,S;Somlyo,AV;Somlyo,AP
通讯作者:
Somlyo,AP