Pharmacological and electrophysiological characterization of the human bile acid-sensitive ion channel (hBASIC)
Pharmacological and electrophysiological characterization of the human bile acid-sensitive ion channel (hBASIC)
复制标题
人胆汁酸敏感离子通道 (hBASIC) 的药理学和电生理学表征
DOI:
10.1007/s00424-013-1310-4
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Wiemuth
中科院分区:
文献类型:
--
作者:
Lefèvre;Diakov;Haerteis;Korbmacher;Gründer;Wiemuth
The human bile acid-sensitive ion channel (hBASIC) is a cation channel of the degenerin/epithelial Na+channel gene family that is expressed in the intestinal tract and can be activated by bile acids. Here, we show that in addition to its sensitivity for bile acids, hBASIC shares further key features with its rat ortholog: it is blocked by extracellular divalent cations, is inhibited by micromolar concentrations of the diarylamidine diminazene, and activated by millimolar concentrations of flufenamic acid. Furthermore, we demonstrate that two major bile acids present in human bile, chenodeoxycholic acid and deoxycholic acid, activate hBASIC in a synergistic manner. In addition, we determined the single-channel properties of hBASIC in outside-out patch clamp recordings, revealing a single-channel conductance of about 11 pS and a high Na+selectivity. Deoxycholic acid activates hBASIC in patch clamp recordings mainly by reducing the single-channel closed time. In summary, we provide a thorough functional characterization of hBASIC.
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影响因子:
3.6
作者:
Wiemuth, Dominik;Gruender, Stefan
通讯作者:
Gruender, Stefan
影响因子:
4.8
作者:
Wiemuth, Dominik;Gruender, Stefan
通讯作者:
Gruender, Stefan
DOI:
--
发表时间:
2010
期刊:
Journal of Physiology
影响因子:
--
作者:
Andreas Springauf;S. Gründer
通讯作者:
S. Gründer
影响因子:
4.8
作者:
Wiemuth, Dominik;Sahin, Hacer;Gruender, Stefan
通讯作者:
Gruender, Stefan
DOI:
10.4161/chan.22406
发表时间:
2013-01-01
期刊:
Channels (Austin, Tex.)
影响因子:
--
作者:
Wiemuth D;Sahin H;Lefèvre CM;Wasmuth HE;Gründer S
通讯作者:
Gründer S