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Effects of Cl Channel Blockers on the Cardiac ATP-sensitive K+ Channel
Yong-GeunKwak 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.3 8 305-313 (9 pages)
on the KATP channel activity in isolated rat ventricular myocytes using patch clamp techniques. In inside-out patches, 4,4'-diisothio-cyanatostilbene- 2,2'-disulfonic acid (DIDS) and niflumic acid applied to bath solution inhibited the KATP channel activity in a concentration-dependent manner with IC50 of 0.24 and 927μM, respectively. The inhibitory action of DIDS was irreversible whereas that of niflumic acid was reversible. Furthermore, DIDS-induced block was not recovered despite exposure to... -
Modulation of ATP-Induced Activation of the Muscarinic K+ Channel Activity by Protein Kinase C
Yang-MiKim, Hong-KiPark, Jae-HeeHan, Choon-OkPark, Seong-GeunHong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.6 11 743-753 (11 pages)
rabbit and guinea pig. This channel can be activated by various agonists and also modulated its function by phosphorylation. ATP-induced KACh channel activation (AIKA) was maintained in the presence of the NDPK inhibitor, suggesting the existence of a mechanism other than NDPK-mediated process. Here we hypothesized the phosphorylation process as another mechanism underlying AIKA and was undertaken to examine what kinase is involved in atrial cells isolated from the rat heart. Single application... -
Effect of Propofol, an Intravenous Anesthetic Agent, on KATP Channels of Pancreatic β-cells in Rats
EunJeePark, Dae-KyuSong, JaeKyuCheun, JungInBae, Won-KyungHo, YungEEarm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.1 4 25-31 (7 pages)
in a dose-dependent manner. The half-maximal inhibition dose (ED50) was 48.6⁑8.4μM and the Hill coefficient was 0.73⁑0.11. Single channel conductance calculated from the slope of the relationship between single channel current and pipette potential (20∼100 mV) was not significantly altered by propofol (control: 60.0⁑2.7 pS, 0.1 mM propofol: 58.7⁑3.5 pS). However, mean closed time was surely increased. Above results indicate that propofol blocks the KATP... -
고려 인삼의 효능은 생체막 이온 채널 조절과 연관되어 있다는 증거들에 대하여
나승열, Na. Seung-Yeol 한국식품연구원 食品技術 7 Pages
한국식품연구원 食品技術 2005, Vol.18 No.2 52-58 (7 pages)
오직 인삼에서만 발견되어지는 saponin이다. 최근 들어 신경, 非신경 또는 복합적으로 분포된 세포에서 ginsenoside가 $Ca^2+$, $K^+$,$Na^+$,$Cl^-$ channel이나 ligand gated ionchannel (5-HT3, nicotinic acetylcholine, NMDA receptor)과 같은 다양한 ion channel을 조절하는증거들이 발표되고 있다. Ginsenoside는 voltage-dependent $Ca^2+$, $K^+$,$Na^+$ channel의 활성을 억제하는 반면 $Ca^2+$-activated $Cl^-$ channel이나 $Ca^2+$-activated $K^+$ channel의 활성은 증가 시키는 것으로 나타났다. 또한 흥분성 ligand-gated...
