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141.

Block of ATP-Sensitive K Channels Expressed in Xenopus Oocytes by Dimethyl Sulfoxide

JinBongParkSooWanChae 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 6 157-163 (7 pages)

JinBongParkSooWanChae 저
...
- 3,000원
The effects of dimethyl sulfoxide (DMSO) were studied in two groups of Xenopus oocytes, one expressing ATP sensitive K (KATP) channel comprised of sulfonylurea receptor SUR1 and inwardly rectifying K channel subunit Kir6.2, and the other expressing renal KATP channel ROMK2. At concentrations of 0.3∼10% (vol/vol) DMSO inhibited whole cell Kir6.2/SUR1 currents elicited by bath application of sodium azide (3 mM) in a concentration-dependent manner. The inhibition constant and Hill coefficient...
142.

Stationary Outward and Transient Ca2+-Dependent Currents in Hamster Oocytes

Yang-MiKim, Jae-HeeHan, Jong-SuKim, Seong-GeunHong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.5 9 403-408 (6 pages)

Yang-MiKim, Jae-HeeHan, Jong-SuKim, Seong-GeunHong 저
...
- 3,000원
a steady-state outward component (I∞). Ito was transiently followed by the cessation of inward Ca2⁢ current (ICa), and its current-voltage (I-V) relation was a mirror image of that of ICa. Either blockade of ICa by Co2⁢ or replacement of Ca2⁢ with Sr2⁢ abolished Ito without change in I∞. Intracellular EGTA (10 mM) inhibited Ito but not I∞. suggesting strongly that generation of Ito requires intracellular Ca2⁢. Apamin (1 nM) abolished selectively Ito, indicating...
143.

Effects of Prostaglandin F2α on Membrane Potentials and K+ Currents in Rabbit Middle Cerebral Arterial Cells

NariKim, JinHan, WonGueKim, EuiyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.4 5 301-309 (9 pages)

NariKim, JinHan, WonGueKim, EuiyongKim 저
...
- 3,000원
single rabbit middle cerebral arterial smooth muscle cells. PGF2α significantly hyperpolarized membrane potentials and increased outward whole-cell K⁢ currents. PGF2α increased open-state probability of KCa channels without the change of the open and closed kinetics. PGF2α increased the amplitudes of KV currents with a leftward shift of activation and inactivation curves and a decrease of activation time constant. Our results suggest that the activation of KCa and KV channels, at least...
144.

Effects of Cholecystokinin Octapeptide on Neuronal Activities in the Rat Nucleus Tractus Solitarius

HyewhonRhim, Chan-WoongPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.4 2 275-281 (7 pages)

HyewhonRhim, Chan-WoongPark 저
...
- 3,000원
Cholecystokinin (CCK) is a gastrointestinal hormone which plays an important role in satiety and gastric motility. It is also widely distributed throughout the central nervous system, where it appears to be involved in the central control of anxiety, feeding behavior and nociception. Two distinct CCK receptor types, CCKA and CCKB, have been found in the brain. Both CCK receptors coexist in the rat nucleus tractus solitarius (NTS), which is the primary center for the coordination of peripheral...
145.

Tyrosine Phosphorylation of Paxillin May be Involved in Vascular Smooth Muscle Contraction

Lian-HuaFang, Kyoung-SooCho, Sang-JinLee, Hee-YulAhn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.3 5 211-217 (7 pages)

Lian-HuaFang, Kyoung-SooCho, Sang-JinLee, Hee-YulAhn 저
...
- 3,000원
a steady state 30 min after application. Pretreatment with tyrphostin, an inhibitor of tyrosine kinase, inhibited the tyrosine phosphorylation of paxillin and also the contraction stimulated by norepinephrine. Both inhibitions were concentration-dependent, and the degree of correlation between them was high. These results show that, in rat aortic smooth muscle, tyrosine kinase(s) activated by norepinephrine may phosphorylate the tyrosine residues of paxillin, thereby providing a source of...
146.

Regulation of the Contraction Induced by Emptying of Intracellular Ca2+ Stores in Cat Gastric Smooth Muscle

Hye-JungBaek, Sang-SooSim, Duck-JooRhie, ShinHeeYoon, SangJuneHahn, Yang-HyeokJo, Myung-SukKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.2 5 113-120 (8 pages)

Hye-JungBaek, Sang-SooSim, Duck-JooRhie, ShinHeeYoon, SangJuneHahn, Yang-HyeokJo, Myung-SukKim 저
...
- 3,000원
To investigate the mechanism of smooth muscle contraction induced by emptying of intracellular Ca2⁢ stores, we measured isometric contraction and 45Ca2⁢ influx. CaCl2 increased Ca2⁢ store emptying- induced contraction in dose-dependent manner, but phospholipase C activity was not affected by the Ca2⁢ store emptying-induced contraction. The contraction was inhibited by voltage-dependent Ca2⁢ channel antagonists dose dependently, but not by TMB-8 (intracellular...
147.

The Role of K+ Channels on Spontaneous Action Potential in Rat Clonal Pituitary GH3 Cell Line

HyewhonRhim, Hye-JungBaek, Won-KyungHo, YungEEarm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.2 1 81-90 (10 pages)

HyewhonRhim, Hye-JungBaek, Won-KyungHo, YungEEarm 저
...
- 3,000원
The types of K⁢ channel which determine the pattern of spontaneous action potential (SAP) were investigated using whole-cell variation of patch clamp techniques under current- and voltage-clamp recording conditions in rat clonal pituitary GH3 cells. Heterogeneous pattern of SAP activities was changed into more regular mode with elongation of activity duration and afterhyperpolarization by treatment of TEA (10 mM). Under this condition, exposure of the class III antiarrhythmic agent E-4031...
148.

The Effect of NO Donor on Contraction, Cytosolic Ca2+ Level and Ionic Currents in Guinea-pig Ileal Smooth Muscle

Seong-ChunKwon, Ki-YoungPark, Duck-SunAhn, Young-HoLee, Bok-SoonKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.1 5 33-40 (8 pages)

Seong-ChunKwon, Ki-YoungPark, Duck-SunAhn, Young-HoLee, Bok-SoonKang 저
...
- 3,000원
This study was designed to clarify the mechanism of the inhibitory action of a nitric oxide (NO) donor, 3-morpholino-sydnonimine (SIN-1), on contraction, cytosolic Ca2⁢ level ([Ca2⁢]i), and ionic currents in guinea-pig ileum. SIN-1 (0.01∼100μM) inhibited 25 mM KCl- or histamine (10μM)-induced contraction in a concentration-dependent manner. SIN-1 reduced both the 25 mM KCl- and the histamine-stimulated increases in muscle tension in parallel with decreased [Ca2⁢]i. Using...
149.

Effect of Capsaicin on Delayed Rectifier K+ Current in Adult Rat Dorsal Root Ganglion Neurons

JunghyunHahn, SungkwonChung, HyoweonBang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.1 2 9-14 (6 pages)

JunghyunHahn, SungkwonChung, HyoweonBang 저
...
- 3,000원
the amplitude of K⁢ current in dose dependent manner, and the concentration-dependence curve was well described by the Hill equation with KD value of 19.1μM. The blocking effect of capsaicin was reversible. Capsaicin (10 μM) shifted the steady- state inactivation curve in the hyperpolarizing direction by about 15 mV and increased the rate of inactivation. The voltage dependence of activation was not affected by capsaicin. These multiple effects of capsaicin may suggest that capsaicin...
150.

Decreased Voltage Dependent K+ Currents in Cerebral Arterial Smooth Muscle Cells of One-Kidney, One-Clip Goldblatt Hypertensive Rat

YoungSunOh, SeHoonKim, HoeSukKim, ByeongHwaJeon, SeokJongChang, KwangJinKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.5 3 471-479 (9 pages)

YoungSunOh, SeHoonKim, HoeSukKim, ByeongHwaJeon, SeokJongChang, KwangJinKim 저
...
- 3,000원
Kv current was smaller in 1K,1C-GBH rat than in normotensive rat. The voltage dependence of steady-state activation and inactivation of Kv channel determined by using double-pulse protocol showed no significant difference. These results suggest that 4-AP-sensitive Kv channels play a major role in the regulation of membrane potential in cerebral arterial smooth muscle cells and alterations of 4-AP- sensitive KV channels would contribute to hypopolarization of membrane potential in 1K,1C-GBH rat.

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