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51.

Potassium Currents in Isolated Deiters' Cells of Guinea Pig

JongWooChung, EuiCholNam, WonTaeKim, JaeBoumYoum, ChaeHunLeem 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.6 10 537-546 (10 pages)

JongWooChung, EuiCholNam, WonTaeKim, JaeBoumYoum, ChaeHunLeem 저
...
- 3,000원
Deiters' cells are the supporting cells in organ of Corti and are suggested to play an important role in biochemical and mechanical modulation of outer hair cells. We successfully isolated functionally different K+ currents from Deiters’ cells of guinea pig using whole cell patch clamp technique. With high K+ pipette solution, depolarizing step pulses activated strongly outward rectifying currents which were dose-dependently blocked by clofilium, a class III anti-arrhythmic K+ channel blocker....
52.

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
...
- 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...
53.

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...
54.

Bile Acid Inhibition of N-type Calcium Channel Currents from Sympathetic Ganglion Neurons

HyeKyungLee, KyoungHwaLee, Eui-SicCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.1 4 25-30 (6 pages)

HyeKyungLee, KyoungHwaLee, Eui-SicCho 저
...
- 3,000원
Under some pathological conditions as bile flow obstruction or liver diseases with the enterohepatic circulation being disrupted, regurgitation of bile acids into the systemic circulation occurs and the plasma level of bile acids increases. Bile acids in circulation may affect the nervous system. We examined this possibility by studying the effects of bile acids on gating of neuronal (N)-type Ca2＋ channel that is essential for neurotransmitter release at synapses of the peripheral and central...
55.

Inhibitory Actions of HERG Currents by the Immunosuppressant Drug Cyclosporin A

SeungHoLee, SangJuneHahn, GyesikMin, JimokKim, Su-HyunJo, HanChoe, BokHeeChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.5 7 291-298 (8 pages)

SeungHoLee, SangJuneHahn, GyesikMin, JimokKim, Su-HyunJo, HanChoe, BokHeeChoi 저
...
- 3,000원
The effect of cyclosporin A (CsA), an immunosuppressant, on human ether-a-go-go-related gene (HERG) channel as it is expressed in human embryonic kidney cells was studied using a whole-cell, patch-clamp technique. CsA inhibited the HERG channel in a concentration-dependent manner, with an IC50 value and a Hill coefficient of 3.17ՌM and 0.89, respectively. Pretreatment with cypermethrine, a calcineurin inhibitor, had no effect on the CsA-induced inhibition of the HERG channel. The...
56.

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...
57.

Block of hERG K＋ Channel by Classic Histamine H1 Receptor Antagonist Chlorpheniramine

Hee-KyungHong, Su-HyunJo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 12 215-220 (6 pages)

Hee-KyungHong, Su-HyunJo 저
...
- 3,000원
Chlorpheniramine is a potent first-generation histamine H1 receptor antagonist that can increase action potential duration and induce QT prolongation in several animal models. Since block of cardiac human ether-a-go-go-related gene (hERG) channels is one of leading causes of acquired long QT syndrome, we investigated the acute effects of chlorpheniramine on hERG channels to determine the electrophysiological basis for its proarrhythmic potential. We examined the effects of chlorpheniramine on...
58.

Voltage-dependent Ca2＋ Current Identified in Freshly Isolated Interstitial Cells of Cajal (ICC) of Guinea-pig Stomach

YoungChulKim, HikaruSuzuki, Wen-XieXu, HikaruHashitani, WoongChoi, Hyo-YungYun, Seon-MeePark6, SeiJinYoun6, Sang-JeonLee, SangJinLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.6 6 323-330 (8 pages)

YoungChulKim, HikaruSuzuki, Wen-XieXu, HikaruHashitani, WoongChoi, Hyo-YungYun, Seon-MeePark6, SeiJinYoun6, Sang-JeonLee, SangJinLee 저
...
- 3,000원
The properties of voltage dependent Ca2＋ current (VDCC) were investigated in interstitial cells of Cajal (ICC) distributed in the myenteric layer (ICC-MY) of guinea-pig antrum. In tissue, ICC-MY showed c-Kit positive reactions and produced driving potentials with the amplitude and frequency of about 62 mV and 2 times min−1, respectively, in the presence of 1</SUP>ՌM nifedipine. Single ICC-MY isolated by enzyme treatment also showed c-Kit immunohistochemical reactivity. These...
59.

Open Channel Block of Kv3.1 Currents by Genistein, a Tyrosine Kinase Inhibitor

BokHeeChoi, JiHyunPark, SangJuneHahn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.2 3 71-78 (8 pages)

BokHeeChoi, JiHyunPark, SangJuneHahn 저
...
- 3,000원
The goal of this study was to analyze the effects of genistein, a widely used tyrosine kinase inhibitor, on cloned Shaw-type K⁢ currents, Kv3.1 which were stably expressed in Chinese hamster ovary (CHO) cells, using the whole-cell configuration of patch-clamp techniques. In whole-cell recordings, genistein at external concentrations from 10 to 100μM accelerated the rate of inactivation of Kv3.1 currents, thereby concentration-dependently reducing the current at the end of depolarizing...
60.

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
The interaction of cyclosporine A (CsA), an immunosuppressant, with rat brain Kv1.5 (Kv1.5) channels, which were stably expressed in Chinese hamster ovary cells, was investigated using the whole-cell patch-clamp technique. CsA reversibly blocked Kv1.5 currents at ⁢50 mV in a reversible concentration- dependent manner with an apparent IC50 of 1.0μM. Other calcineurin inhibitors (cypermethrin, autoinhibitory peptide) had no effect on Kv1.5 and did not prevent the inhibitory effect of CsA....

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