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The Characterization of the Increase of Membrane Conductance after Depolarization in Single Rat Adrenal Chromaffin Cells
WonilLim, SangJeongKim, JunKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.1 12 95-100 (6 pages)
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Two Types of Voltage-dependent Outward Potassium Currents in Smooth Muscle Cells of Rabbit Basilar Atery
TongMookKang, InsukSo, DaeYongUhm, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 15 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1997, Vol.1 No.2 7 169-183 (15 pages)
We have investigated the two types of voltage-dependent outward potassium (K) currents, i.e. delayed rectifier K current (IK(V)) and 'A-like' transient outward K current (Ito) with patch-clamp technique in single smooth muscle cells (SMCs) isolated from rabbit basilar artery, and investigated the characteristics of them. The time-courses of activation were well fitted by exponential function raised to second power (n2) in IK(v) and fourth power (n4) in Ito. The activation, inactivation and... -
Acetylcholine및 Oxytocin에 의하여 야기되는 렛드 자궁수축에 미치는 Verapamil 및 Tetracaine의 영향
이만기(Maan Gee Lee), 김중영(Choong Young Kim) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1987, 제 23권 제 2호 8 133-142 (10 pages)
Acetylcholine및 oxytocin에 의하여 야기되는 흰쥐의 적출자궁수축을 Ca2+ 길항제의 일종인 verapamil및 tetracaine 존재하에서 acetylcholine및 oxytocin에 의한 자궁수축곡선을 4개의 요소 (trough tension, T: peak tension, P; contraction frequency, F: duration, D)로 나누어 비교분석하여 다음과 같은 결과를 얻었다. Verapamil (0.25μM)은 자발수축을 억제시켰으나 tetracaine(42μM)은 자발수축을 억제시키지 못하였다. 이들 길항제의 존재하에서 acetylcholine및 oxytocin에 의하여 야기되는 자궁수축의 각 구성요소에 변화를... -
약물상호작용(藥物相互作用)
조규철(Jo, Gyu-Cheol), 대한약리학회 대한약리학잡지 16 Pages
대한약리학회 대한약리학잡지 1972, 제 8권 제 2호 1 5-20 (16 pages)
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Properties of Single K+ Channels of Skeletal Muscle Incorporated into Planar Lipid Bilayer
Park, Jin-Bong, Kim, Hee-Jeong, Cho, Myung-Haing, Lee, Hang, Park, Hong-Ki, Lee, Mun-Han, Ryu, Pan-Dong 대한생리학회 대한생리학회지 16 Pages
대한생리학회 대한생리학회지 1995, 제 29권 제 1호 2 13-28 (16 pages)
single K+ channels of skeletal muscle from the rat and frog were into planar lipid bilayers and their properties were studied. Fusion was induced by an osmotic gradient. Of the four types of K+ channels recorded, the two most frequently observed were a voltage and Ca2+-activated K+ channel and a K+ channel with a prominent conductance substate. The first K+ channel was identified as the large Ca2+-activated K+ (BK) channel because the open-state probability was increased with depolarization... -
Effects of Lemakalim, a Potassium Channel Opener, on the Contractility and Electrical Activity of the Antral Circular Muscle in Guinea-Pig Stomach
Kim, Sung-Joon, Jun, Jae-Yeoul, Choi, Youn-Baik, Kim, Ki-Whan, Kim, Woo-Gyeum 대한생리학회 대한생리학회지 14 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 1호 4 37-50 (14 pages)
Synthetic potassium channel openers (KCOs) are agents capable of opening K-channels in excitable cells. These agents are known to have their maximal potency in the smooth muscle tissue, especially in the vascular smooth muscle. Much attention has been focused on the type of K-channel that is responsible for mediating the effects of KCOs. As the KCO-induced changes are antagonized by glibenclamide, an KATP (ATP-sensitive K-channel) blocker in the pancreatic β-cell, KATP was suggested to be the... -
Effect of Cyclic GMP on the Calcium Current in Rabbit Ventricular Myocytes
Han, Jin, Leem, Chae-Hun, Ahn, Chul-Soo, So, In-Suk, Kim, Eui-Yong, Ho, Won-Kyung, Earm, Yung-E 대한생리학회 대한생리학회지 12 Pages
대한생리학회 대한생리학회지 1993, 제 27권 제 2호 4 151-162 (12 pages)
In order to investigate the effect of intracellular cyclic GMP on calcium current the whole-cell patch clamp technique with internal perfusion method was used in isolated ventricular myocytes of the rabbit. Cyclic GMP, 8-bromo-cyclic GMP, cyclic AMP, isoprenaline and forskolin were perfused into cells and their effects on calcium current were analysed by applying depolarizing step pulses of + 10 mV in amplitude far 300 msec from holding potential of - 40 mV. Not only cyclic AMP (100 μM) but... -
Effect of Dopamine on the Ca2+-dependent K+ currents in Isolated Single Gastric Myocytes of the Guinea-pig
Rhee, Poong-Lyul, Lee, Sang-Jin, Kim, Sung-Joon, So, In-Suk, Hwang, Sang-Ik, Kim, Ki-Whan 대한생리학회 대한생리학회지 12 Pages
대한생리학회 대한생리학회지 1993, 제 27권 제 2호 3 139-150 (12 pages)
We have reported that dopamine potentiates spontaneous contractions dose-dependently in guinea-pig antral circular muscle strips (Hwang et al, 1991). To clarify the underlying excitatory mechanism of dopamine on the gastric smooth muscle, the effects of dopamine on voltage-dependent Ca2+ currents and Ca2+ -dependent K+ currents were observed in enzymatically dispersed guinea-pig gastric myocytes using the whole-cell voltage-clamp technique. Experiments were also done using isometric tension... -
Calcium Current and Background Current Activation in L-triiodothyronine Loaded Ventricular Myocytes of the Rabbit
Han, Jin, Kim, Eui-Yong, Han, Jae-Hee, Park, Choon-Ok, Hong, Seong-Geun, Leem, Chae-Hun, So, In-Suk, Ho, Won-Kyung, Earm, Yung-E, Sung, H 대한생리학회 대한생리학회지 14 Pages
대한생리학회 대한생리학회지 1992, 제 26권 제 2호 1 99-112 (14 pages)
Permissive action of thyroid hormone at the level of Ca channel and responsible mechanisms underlying thyroid hormone-induced change in myocardial contractile state and T3-induced arrhythmias were investigated in rabbit ventricular or atrial myocytes using whole cell patch clamp technique. Single cells were isolated by Langendorff perfusion with collagenase. Cardiac myocytes were incubated in low-Cl-,, high-K+ medium containing 1μM L-triiodothyronine (T3) at 4℃ for 2.10 hours. The calcium...
