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311.

Taxifolin Glycoside Blocks Human ether-a-go-go Related Gene K+ Channels

JihyunYun, HyemiBae, SunEunChoi, Jung-HaKim, YoungWookChoi6, InjaLim, ChungSooLee, MinWonLee, Jae-HongKo, SeongJunSeo, HyoweonBang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.1 6 37-42 (6 pages)

JihyunYun, HyemiBae, SunEunChoi, Jung-HaKim, YoungWookChoi6, InjaLim, ChungSooLee, MinWonLee, Jae-HongKo, SeongJunSeo, HyoweonBang 저
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- 3,000원
Taxifolin glycoside is a new drug candidate for the treatment of atopic dermatitis (AD). Many drugs cause side effects such as long QT syndrome by blocking the human ether-a-go-go related gene (hERG) K+ channels. To determine whether taxifolin glycoside would block hERG K+ channels, we recorded hERG K+ currents using a whole-cell patch clamp technique. We found that taxifolin glycoside directly blocked hERG K+ current in a concentration-dependent manner (EC50=9.6±0.7ՌM). The activation...
312.

Wide Spectrum of Inhibitory Effects of Sertraline on Cardiac Ion Channels

Hyang-AeLee, Ki-SukKim, Sung-AeHyun, Sung-GurlPark, SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.5 6 327-332 (6 pages)

Hyang-AeLee, Ki-SukKim, Sung-AeHyun, Sung-GurlPark, SungJoonKim 저
...
- 3,000원
Sertraline is a commonly used antidepressant of the selective serotonin reuptake inhibitors (SSRIs) class. In these experiments, we have used the whole cell patch clamp technique to examine the effects of sertraline on the major cardiac ion channels expressed in HEK293 cells and the native voltage-gated Ca2＋ channels in rat ventricular myocytes. According to the results, sertraline is a potent blocker of cardiac K＋ channels, such as hERG, IKs and IK1. The rank order of inhibitory potency was...
313.

Role of Regulators of G-Protein Signaling 4 in Ca2＋ Signaling in Mouse Pancreatic Acinar Cells

SoonhongPark, Syng-IllLee, DongMinShin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.6 9 383-388 (6 pages)

SoonhongPark, Syng-IllLee, DongMinShin 저
...
- 3,000원
Regulators of G-protein signaling (RGS) proteins are regulators of Ca2＋ signaling that accelerate the GTPase activity of the G-protein Ձ-subunit. RGS1, RGS2, RGS4, and RGS16 are expressed in the pancreas, and RGS2 regulates G-protein coupled receptor (GPCR)-induced Ca2＋ oscillations. However, the role of RGS4 in Ca2＋ signaling in pancreatic acinar cells is unknown. In this study, we investigated the mechanism of GPCR-induced Ca2＋ signaling in pancreatic acinar cells derived from...
314.

Response of IKr and hERG Currents to the Antipsychotics Tiapride and Sulpiride

Su-HyunJo, So-YoungLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.5 9 305-310 (6 pages)

Su-HyunJo, So-YoungLee 저
...
- 3,000원
The human ether-a-go-go-related gene (hERG) channel is important for repolarization in human myocardium and is a common target for drugs that prolong the QT interval. We studied the effects of two antipsychotics, tiapride and sulpiride, on hERG channels expressed in Xenopus oocytes and also on delayed rectifier K＋ currents in guinea pig cardiomyocytes. Neither the amplitude of the hERG outward currents measured at the end of the voltage pulse, nor the amplitude of hERG tail currents, showed any...
315.

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...
316.

Differential Functional Expression of Clotrimazole-sensitive Ca2+-activated K+ Current in Bal-17 and WEHI-231 Murine B Lymphocytes

HaifengZheng, JaeHongKo, JooHyunNam, YungEEarm, SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.1 4 19-24 (6 pages)

HaifengZheng, JaeHongKo, JooHyunNam, YungEEarm, SungJoonKim 저
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- 3,000원
The intermediate conductance Ca2⁢-activated K⁢ channels (SK4, IKCa1) are present in lymphocytes, and their membrane expression is upregulated by various immunological stimuli. In this study, the activity of SK4 was compared between Bal-17 and WEHI-231 cell lines which represent mature and immature stages of murine B lymphocytes, respectively. The whole-cell patch clamp with high-Ca2⁢ (0.8μM) KCl pipette solution revealed a voltage-independent K⁢ current that was blocked...
317.

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
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- 3,000원
M of SS, respectively (n=3∼6; mean⁑SEM). The steady-state activation and inactivation curves of IBa as a function of membrane potentials were well fitted by a Boltzmann equation. Voltage of half-activation (V0.5) was ⁣12⁑0.5 mV in control and ⁣11⁑1.9 mV in SS treated groups (respectively, n=5). The same values of half-inactivation were ⁣35⁑1.4 mV and ⁣35⁑1.9 mV (respectively, n=5). There was no significant difference in activation and...
318.

Higher Expression of TRPM7 Channels in Murine Mature B Lymphocytes than Immature Cells

JinKyoungKim, JaeHongKo, JooHyunNam, Ji-EunWoo, KyeongMinMin, YungEEarm, SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.2 1 69-76 (8 pages)

JinKyoungKim, JaeHongKo, JooHyunNam, Ji-EunWoo, KyeongMinMin, YungEEarm, SungJoonKim 저
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- 3,000원
TRPM7, a cation channel protein permeable to various metal ions such as Mg2⁢, is ubiquitously expressed in variety of cells including lymphocytes. The activity of TRPM7 is tightly regulated by intracellular Mg2⁢, thus named Mg2⁢-inhibited cation (MIC) current, and its expression is known to be critical for the viability and proliferation of B lymphocytes. In this study, the level of MIC current was compared between immature (WEHI-231) and mature (Bal-17) B lymphocytes. In both...
319.

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
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- 3,000원
inducing Ca2⁢ influx. Using the Ca2⁢ imaging analysis, we were able to provide direct evidence that ACh induced Ca2⁢ influx from extracellular solution, which was dramatically increased by valinomycin-mediated hyperpolarization. In addition, ACh hyperpolarized the membrane potential from ⁣12.5⁑3 to ⁣31.2⁑5 mV by generating the outward current through KCa channels. These results suggest that activation of nAChR increases Ca2⁢ influx, which activates...
320.

Mechanism of Acetylcholine-induced Endothelium-dependent Relaxation in the Rabbit Carotid Artery by M3-receptor Activation

Yong-JinSong, Seong-ChunKwon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.6 4 313-318 (6 pages)

Yong-JinSong, Seong-ChunKwon 저
...
- 3,000원
The present study were designed to characterize the action mechanisms of acetylcholine (ACh)- induced endothelium-dependent relaxation in arteries precontracted with high K⁢ (70 mM). For this, we simultaneously measured both muscle tension and cytosolic free Ca2⁢ concentration ([Ca2⁢]i), using fura-2, in endothelium-intact, rabbit carotid arterial strips. In the artery with endothelium, high K⁢ increased both [Ca2⁢]i and muscle tension whereas ACh (10μM)...

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