An ATP, calcium and voltage sensitive potassium channel in porcine coronary artery smooth muscle cells.
An ATP, calcium and voltage sensitive potassium channel in porcine coronary artery smooth muscle cells.
复制标题
猪冠状动脉平滑肌细胞中的 ATP、钙和电压敏感钾通道。
DOI:
10.1016/0006-291x(90)90703-p
复制
发表时间:
1990
影响因子:
3.1
通讯作者:
vanBreemen,C
中科院分区:
文献类型:
--
作者:
Silberberg,SD;vanBreemen,C
There is increasing interest in the roles played by potassium channels of smooth muscle in protecting against ischemic and anoxic insults. Hence, potassium-selective channels were studied in freshly dispersed porcine coronary artery smooth muscle cells using the inside-out variant of the patch-clamp technique. The most abundant potassium channel had a conductance of 148 pS in a 5.4 140 mM K+ gradient, at 0 mV, and was regulated by cytoplasmic ATP (0.05–3.0 mM), cytoplasmic Ca 2+(0.1–10 μM) and voltage. ATP and AMP-PNP (0.5 mM) reduced the probability of channel opening (P 0) by 87 and 92%, respectively. This inhibition was partially reversed by the addition of 0.5 mM ADP. ADP on its own (2 mM) reduced P 0 by 46%. It appears, therefore, that this channel shares properties with both the ATP-sensitive and the calcium-regulated potassium channels, raising the possibility that it plays a central role in the regulation of coronary blood flow.
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DOI:
10.1085/jgp.94.5.833
发表时间:
1989-11
期刊:
The Journal of general physiology
影响因子:
--
作者:
Hu SL;Yamamoto Y;Kao CY
通讯作者:
Kao CY
影响因子:
64.8
作者:
A. Spruce;N. Standen;P. Stanfield
通讯作者:
P. Stanfield
影响因子:
3.5
作者:
KAKEI, M;KELLY, RP;ASHCROFT, FM
通讯作者:
ASHCROFT, FM
影响因子:
3.5
作者:
DUNNE, MJ;PETERSEN, OH
通讯作者:
PETERSEN, OH
DOI:
10.1016/0304-4165(87)90102-4
发表时间:
1987-08-13
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子:
--
作者:
HARRISON, SM;BERS, DM
通讯作者:
BERS, DM