Effects of ATP-sensitive potassium channel opener on potassium transport and alveolar fluid clearance in the resected human lung.
Effects of ATP-sensitive potassium channel opener on potassium transport and alveolar fluid clearance in the resected human lung.
复制标题
ATP 敏感钾通道开放剂对切除人肺中钾转运和肺泡液清除的影响。
DOI:
10.1111/j.1600-0773.1998.tb01436.x
复制
发表时间:
1998
期刊:
影响因子:
--
通讯作者:
M. Matthay
中科院分区:
文献类型:
--
作者:
Tsutomu Sakuma;Keiji Takahashi;Nobuo Ohya;Tasuku Nakada;M. Matthay
Since the effect of an ATP-sensitive potassium channel (KATP channel) opener on the function of alveolar epithelial cells is unknown, the effect of YM934, a newly synthesized KATP channel opener, on potassium influx into the alveolar spaces and alveolar fluid clearance was determined in the resected human lung. An isosmolar albumin solution with a low potassium concentration was instilled into the distal airspaces of resected human lungs. Alveolar fluid clearance was measured by the progressive increase in alveolar protein concentration. Net potassium transport was measured by the change in potassium concentration and alveolar fluid volume. YM934 (10(-4) M) increased net influx of potassium by 140% into the alveolar spaces and also increased alveolar fluid clearance by 60% in the experiments with a potassium concentration of 0.3 mEq/1. Glibenclamide (10(-4) M), a KATP channel blocker, inhibited the YM934-increased influx of potassium transport and the increase in alveolar fluid clearance. Also amiloride (10(-5) M), an inhibitors of apical sodium uptake, blocked the YM934 stimulated increase in net alveolar fluid clearance. These results indicate that a KATP channel opener can effect potassium transport and net vectorial fluid movement across the human alveolar epithelium.
登录
查看更多内容
DOI:
10.1152/ajplung.1997.273.2.l305
发表时间:
1997
期刊:
The American journal of physiology.
影响因子:
--
作者:
Modelska,K;Matthay,MA;McElroy,MC;Pittet,JF
通讯作者:
Pittet,JF
DOI:
10.1152/jappl.1993.74.1.176
发表时间:
1993
期刊:
Journal of applied physiology (Bethesda, Md. : 1985)
影响因子:
--
作者:
Sakuma,T;Pittet,JF;Jayr,C;Matthay,MA
通讯作者:
Matthay,MA
DOI:
10.1152/jappl.1991.71.5.1679
发表时间:
1991
期刊:
Journal of applied physiology (Bethesda, Md. : 1985)
影响因子:
--
作者:
Jayr,C;Matthay,MA
通讯作者:
Matthay,MA
DOI:
10.1073/pnas.91.11.4970
发表时间:
1994-05-24
影响因子:
11.1
作者:
FOLKESSON, HG;MATTHAY, MA;VERKMAN, AS
通讯作者:
VERKMAN, AS
影响因子:
9.6
作者:
Matthay,MA
通讯作者:
Matthay,MA