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111.

Modeling of Arrhythmogenic Automaticity Induced by Stretch in Rat Atrial Myocytes

JaeBoumYoum, ChaeHunLeem, YinHuaZhang, NariKim, JinHan, YungE.Earm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.5 8 267-274 (8 pages)

JaeBoumYoum, ChaeHunLeem, YinHuaZhang, NariKim, JinHan, YungE.Earm 저
...
- 3,000원
The early phase was driven by increased background conductance of voltage-gated Na＋ channel, whereas the later phase was driven by the reverse-mode operation of Na＋/Ca2＋ exchange current secondary to the accumulation of Na＋ and Ca2＋ through SACs. These results of simulation successfully demonstrate how the SACs can induce automaticity in a single atrial myocyte which may act as a focus to initiate and maintain atrial fibrillation in concert with other arrhythmogenic changes in the heart.
112.

Effects of Apigenin on Glutamate-induced [Ca2+]i Increases in Cultured Rat Hippocampal Neurons

Ji-HwaHan, KiJungKim, Hyun-JongJang, JuHoJang, Myung-JunKim, KiWugSung, Duck-JooRhie, Yang-HyeokJo, SangJuneHahn, Mun-YongLee, ShinHeeYoon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.2 2 43-50 (8 pages)

Ji-HwaHan, KiJungKim, Hyun-JongJang, JuHoJang, Myung-JunKim, KiWugSung, Duck-JooRhie, Yang-HyeokJo, SangJuneHahn, Mun-YongLee, ShinHeeYoon 저
...
- 3,000원
Flavonoids have been shown to affect calcium signaling in neurons. However, there are no reports on the effect of apigenin on glutamate-induced calcium signaling in neurons. We investigated whether apigenin affects glutamate-induced increase of free intracellular Ca2+ concentration ([Ca2+]i) in cultured rat hippocampal neurons, using fura-2-based digital calcium imaging and microfluorimetry. The hippocampal neurons were used between 10 and 13 days in culture from embryonic day 18 rats....
113.

Ca2+-dependent Long-term Inactivation of Cardiac Na+/Ca2+ Exchanger

Jee-EunLee, TongMookKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.5 4 183-188 (6 pages)

Jee-EunLee, TongMookKang 저
...
- 3,000원
Using BHK cells with stable expression of cardiac Na+/Ca2+ exchanger (BHK-NCX1), reverse mode (i.e. Ca2+ influx mode) of NCX1 current was recorded by whole-cell patch clamp. Repeated stimulation of reverse NCX1 produced a cytosolic Ca2+-dependent long-term inactivation of the exchanger activity. The degrees of inactivation correlated with NCX1 densities of the cells and were attenuated by reduced Ca2+ influx via the reverse exchanger. The inactivation of NCX1 was attenuated by (i) inhibition of...
114.

Direct Block of Cloned K+ Channels, Kv1.5 and Kv1.3, by Cyclosporin A, Independent of Calcineurin Inhibition

BokHeeChoi, SangJuneHahn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.6 7 353-362 (10 pages)

BokHeeChoi, SangJuneHahn 저
...
- 3,000원
with a steep increase over the voltage range of channel opening. However, the block exhibited voltage independence over the voltage range in which channels were fully activated. The rate constants for association and dissociation of CsA were 7.0μM⁣1s⁣1 and 8.1 s⁣1, respectively. CsA slowed the deactivation time course, resulting in a tail crossover phenomenon. Block of Kv1.5 by CsA was use-dependent. CsA also blocked Kv1.3 currents at ⁢50 mV in a reversible...
115.

Differential Activation of Ras/Raf/MAPK Pathway between Heart and Cerebral Artery in Isoproterenol-induced Cardiac Hypertrophy

HyunjuKim, NariKim, HyunJoo, JaeBoumYoum, WonSunPark, MohamedWarda, SunghyunKang, VuThiThu, TranMinhKhoa, JinHan 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.5 7 299-304 (6 pages)

HyunjuKim, NariKim, HyunJoo, JaeBoumYoum, WonSunPark, MohamedWarda, SunghyunKang, VuThiThu, TranMinhKhoa, JinHan 저
...
- 3,000원
Cardiac hypertrophy contributes an increased risk to major cerebrovascular events. However, the molecular mechanisms underlying cerebrovascular dysfunction during cardiac hypertrophy have not yet been characterized. In the present study, we examined the molecular mechanism of isoproterenol (ISO)-evoked activation of Ras/Raf/MAPK pathways as well as PKA activity in cerebral artery of rabbits, and we also studied whether the activations of these signaling pathways were altered in cerebral artery,...
116.

Protein Kinase C Activates ATP-sensitive Potassium Channels in Rabbit Ventricular Myocytes

NariKim, JaeBoumYoum, HyunJoo, HyungkyuKim, EuiyongKim, JinHan 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.4 1 187-194 (8 pages)

NariKim, JaeBoumYoum, HyunJoo, HyungkyuKim, EuiyongKim, JinHan 저
...
- 3,000원
Several signal transduction pathways have been implicated in ischemic preconditioning induced by the activation of ATP-sensitive K⁢ (KATP) channels. We examined whether protein kinase C (PKC) modulated the activity of KATP channels by recording KATP channel currents in rabbit ventricular myocytes using patch-clamp technique and found that phorbol 12,13-didecanoate (PDD) enhanced pinacidil-induced KATP channel activity in the cell-attached configuration; and this effect was prevented by...
117.

Regulation of L-type Calcium Channel Current by Somatostatin in Guinea-Pig Gastric Myocytes

YoungChulKim, JaeHoonSim, SangJinLee, TongMookKang, SungJoonKim, SeungRyulKim, SeiJinYoun, SangJeonLee, Wen-XieXu6, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.2 5 103-108 (6 pages)

YoungChulKim, JaeHoonSim, SangJinLee, TongMookKang, SungJoonKim, SeungRyulKim, SeiJinYoun, SangJeonLee, Wen-XieXu6, InsukSo, KiWhanKim 저
...
- 3,000원
To study the direct effect of somatostatin (SS) on calcium channel current (IBa) in guinea-pig gastric myocytes, IBa was recorded by using whole-cell patch clamp technique in single smooth muscle cells. Nicardipine (1μM), a L-type Ca2+ channel blocker, inhibited IBa by 98⁑1.9% (n=5), however IBa was decreased in a reversible manner by application of SS. The peak IBa at 0 mV were decreased to 95⁑1.1, 92⁑1.9, 82⁑4.0, 66⁑5.8, 10⁑2.9% at 10⁣10, 10⁣9,...
118.

Ca2+-induced Ca2+ Release from Sarcoplasmic Reticulum Negatively Regulates Myocytic ANP Release in Beating Rabbit Atria

DanLi, HeXiuQuan, JinFuWen, JingYuJin, SungHunPark, SunYoungKim, SungZooKim, KyungWooCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.2 3 87-94 (8 pages)

DanLi, HeXiuQuan, JinFuWen, JingYuJin, SungHunPark, SunYoungKim, SungZooKim, KyungWooCho 저
...
- 3,000원
It is not clear whether Ca2⁢-induced Ca2⁢ release from the sarcoplasmic reticulum (SR) is involved in the regulation of atrial natriuretic peptide (ANP) release. Previously, we have shown that nifedipine increased ANP release, indicating that Ca2⁢ entry via voltage-gated L-type Ca2⁢ channel activation decreases ANP release. The purpose of the present study was two-fold: to define the role of SR Ca2⁢ release in the regulation of ANP release and whether Ca2⁢...
119.

Acetylcholine Induces Hyperpolarization Mediated by Activation of K(Ca) Channels in Cultured Chick Myoblasts

DoyunLee, JaeheeHan, Jae-YongPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.1 6 37-44 (8 pages)

DoyunLee, JaeheeHan, Jae-YongPark 저
...
- 3,000원
Our previous report demonstrated that chick myoblasts are equipped with Ca2⁢-permeable stretch- activated channels and Ca2⁢-activated potassium channels (KCa), and that hyperpolarization-induced by KCa channels provides driving force for Ca2⁢ influx through the stretch-activated channels into the cells. Here, we showed that acetylcholine (ACh) also hyperpolarized the membrane of cultured chick myoblasts, suggesting that nicotinic acetylcholine receptor (nAChR) may be another...
120.

Buffering Contribution of Mitochondria to the [Ca2+]i Increase by Ca2+ Influx through Background Nonselective Cation Channels in Rabbit Aortic Endothelial Cells

YoungChulKim, SangJinLee, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.1 5 29-36 (8 pages)

YoungChulKim, SangJinLee, KiWhanKim 저
...
- 3,000원
To prove the buffering contribution of mitochondria to the increase of intracellular Ca2+ level ([Ca2+]i) via background nonselective cation channel (background NSCC), we examined whether inhibition of mitochondria by protonophore carbonylcyanide m-chlorophenylhydrazone (CCCP) affects endothelial Ca2+ entry and Ca2+ buffering in freshly isolated rabbit aortic endothelial cells (RAECs). The ratio of fluorescence by fura-2 AM (R340/380) was measured in RAECs. Biological state was checked by...

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