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101.

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...
102.

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...
103.

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...
104.

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...
105.

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...
106.

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...
107.

Physiological and Pharmacological Characterization of Glutamate and GABA Receptors in the Retina

Xiong-LiYang, YingShen, Ming-HuHan, TaoLu 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.5 2 461-469 (9 pages)

Xiong-LiYang, YingShen, Ming-HuHan, TaoLu 저
...
- 3,000원
subtype, which predominantly consists of flop splice variants. GABAA and GABAC receptors coexist in bipolar cells and they both show significant desensitization. Kinetics analysis demonstrated that activation, deactivation and desensitization of the GABAC receptor-mediated response of these cells are overall slower than those of the GABAA response. Endogenous modulator Zn2⁢ in the retina was found to differentially modulate the kinetic characteristics of the GABAC and GABAA responses.
108.

Different Mechanisms for K+-Induced Relaxation in Various Arteries

SukHyoSuh, SungJinPark, JaiYoungChoi, JaeHoonSim, YoungChulKim, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.4 6 415-425 (11 pages)

SukHyoSuh, SungJinPark, JaiYoungChoi, JaeHoonSim, YoungChulKim, KiWhanKim 저
...
- 4,000원
[K⁢]o can be increased under a variety of conditions including subarachnoid hemorrhage. The increase of [K⁢]o in the range of 5∼15 mM may affect tensions of blood vessels and cause relaxation of agonist-induced precontracted vascular smooth muscle (K⁢-induced relaxation). In this study, effect of the increase in extracellular K⁢ concentration on the agonist-induced contractions of various arteries including resistant arteries of rabbit was examined, using home-made...
109.

Involvement of Spontaneously Formed Cyclic Nucleotides in Cat Gastric Muscle Relaxation

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.3 5 275-282 (8 pages)

Sang-SooSim, Hye-JungBaek, Duck-JooRhie, Shin-HeeYoon, SangJuneHahn, Yang-HyeokJo, Myung-SukKim 저
...
- 3,000원
(cAMP) in resting state cells, while decreasing acetylcholine-induced muscle contraction. Under the influence of IBMX, SQ22536, an adenylyl cyclase inhibitor and methylene blue, a guanylyl cyclase inhibitor completely blocked increases in cAMP and cGMP respectively, without any effect on contraction. However, the combination of SQ22536 and methylene blue completely blocked increases in both cAMP and cGMP levels and stimulated contractions markedly even in the presence of IBMX. Muscle contraction...
110.

Thyroid Hormone-Induced Alterations of Ca2+-ATPase and Phospholamban Protein Expression in Cardiac Sarcoplasmic Reticulum

HaeWonKim, KyungMinNoh, MiyoungPark, HeeRanLee, EunHeeLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.2 13 223-230 (8 pages)

HaeWonKim, KyungMinNoh, MiyoungPark, HeeRanLee, EunHeeLee 저
...
- 3,000원
Alterations of cardiovascular function associated with various thyroid states have been studied. In hyperthyroidism left ventricular contractility and relaxation velocity were increased, whereas these parameters were decreased in hypothyroidism. The mechanisms for these changes have been suggested to include alterations in the expression and/or activity levels of various proteins; α-myosin heavy chain, β- myosin heavy chain, β-receptors, the guanine nucleotide-binding regulatory protein, and...

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