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51.

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...
52.

Functional Expression of P2Y Receptors in WERI-Rb1 Retinoblastoma Cells

Na-HyunKim, Kyu-SangPark, JoonHyungSohn, Byung-IlYeh, ChangMannKo, InDeokKong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.1 9 61-65 (5 pages)

Na-HyunKim, Kyu-SangPark, JoonHyungSohn, Byung-IlYeh, ChangMannKo, InDeokKong 저
...
- 1,500원
P2Y receptors are metabotropic G-protein-coupled receptors, which are involved in many important biologic functions in the central nervous system including retina. Subtypes of P2Y receptors in retinal tissue vary according to the species and the cell types. We examined the molecular and pharmacologic profiles of P2Y purinoceptors in retinoblastoma cell, which has not been identified yet. To achieve this goal, we used Ca2＋ imaging technique and western blot analysis in WERI-Rb-1 cell, a human...
53.

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....
54.

Inhibition of Sarcoplasmic Reticulum Ca2+ Uptake by Pyruvate and Fatty Acid in H9c2 Cardiomyocytes: Implications for Diabetic Cardiomyopathy

EunHeeLee, HyeKyungLee, HaeWonKim, Young-HoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.4 2 195-202 (8 pages)

EunHeeLee, HyeKyungLee, HaeWonKim, Young-HoonKim 저
...
- 3,000원
High extracellular glucose concentration was reported to suppress intracellular Ca2⁢ clearing through altered sarcoplasmic reticulum (SR) function. In the present study, we attempted to elucidate the effects of pyruvate and fatty acid on SR function and reveal the mechanistic link with glucose-induced SR dysfunction. For this purpose, SR Ca2⁢-uptake rate was measured in digitonin-permeabilized H9c2 cardiomyocytes cultured in various conditions. Exposure of these cells to 5 mM...
55.

Effects of Dopamine on Intracellular pH in Opossum Kidney Cells

KyungWooKang, YungKyuKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.3 11 187-191 (5 pages)

KyungWooKang, YungKyuKim 저
...
- 1,500원
Na⁢/H⁢ exchanger (NHE) has a critical role in regulation of intracellular pH (pHi) in the renal proximal tubular cells. It has recently been shown that dopamine inhibits NHE in the renal proximal tubules. Nevertheless, there is a dearth of information on the effects of long-term (chronic) dopamine treatment on NHE activities. This study was performed to elucidate the pHi regulatory mechanisms during the chronic dopamine treatments in renal proximal tubular OK cells. The resting pHi...
56.

Intrinsic Gating in Inward Rectifier Potassium Channels (Kir2.1) with Low Polyamine Affinity Generated by Site Directed Mutagenesis

ISo, , IAshmole, HSoh, CSPark, PJSpencer, MLeyl, PRStanfield, 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 12 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.3 3 131-142 (12 pages)

ISo, , IAshmole, HSoh, CSPark, PJSpencer, MLeyl, PRStanfield, 저
...
- 4,100원
We have studied mutant forms of Kir2.1 in which an aspartate residue (D172), important for gating by intracellular polyamines, is replaced by one of three basic residues (Arg, Lys or His). Such channels are highly selective for K+, but show inward rectification that is a shallow function of voltage compared with that found in wild type. This inward rectification occurs with a reduced affinity for spermine and persists in the absence of polyamines. Though the unitary current-voltage relation...
57.

Changes in Vestibular Nerve Activity Following Acute Hypotension in Rats

ByungRimPark, MinSunKim, GueHyunYee, MyoungJinMoon, JaeHyoKim, YuanZheJin, YoSikKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.2 6 85-89 (5 pages)

ByungRimPark, MinSunKim, GueHyunYee, MyoungJinMoon, JaeHyoKim, YuanZheJin, YoSikKim 저
...
- 1,500원
The basic mechanism for the excitation of the peripheral vestibular receptors following acute hypotension induced by sodium nitroprusside (SNP) or hemorrhage was investigated in anesthetized rats. Electrical activity of the afferent vestibular nerve was measured after pretreatment with kynurenic acid, an NMDA receptor antagonist. The activity of the vestibular nerve at rest following acute hypotension induced by SNP or simulating hemorrhage was a greater increase than in control animals. The...
58.

Muscarine M2 Receptor-mediated Presynaptic Inhibition of GABAergic Transmission in Rat Meynert Neurons

Il-SungJangNorioAkaike 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.2 1 63-70 (8 pages)

Il-SungJangNorioAkaike 저
...
- 3,000원
Cholinergic modulation of GABAergic spontaneous miniature inhibitory postsynaptic currents (mIPSCs) by the activation of muscarine receptors was investigated in mechanically dissociated rat nucleus basalis of the Meynert neurons using the conventional whole-cell patch recording configuration. Muscarine (10μM) reversibly and concentration-dependently decreased mIPSC frequency without affecting the current amplitude distribution. Muscarine action on GABAergic mIPSCs was completely blocked by...
59.

Activation of ATP-sensitive Potassium Channels by the Predominant Metabolite of Isoflurane in Rabbit Ventricular Myocytes

JinHan, NariKim, EuiyongKim, SungjuKim, KangheeCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 7 165-175 (11 pages)

JinHan, NariKim, EuiyongKim, SungjuKim, KangheeCho 저
...
- 4,000원
Background: Recent in vivo experimental evidence suggests that isoflurane-induced cardioprotection may involve KATP channel activation. However, it was demonstrated that isoflurane inhibited KATP channel activities in the inside-out patch mode. To explain this discrepancy, the present investigation tested the hypothesis that a metabolite of isoflurane, trifluoroacetic acid (TFA), contributes to isoflurnae-induced cardioprotection via KATP channel activation during myocardial ischemia and...
60.

The Alteration of Ca2+-activated K+ Channels in Coronary Arterial Smooth Muscle Cells Isolated from Isoproterenol-induced Cardiac Hypertrophy in Rabbit

NariKim, JinHan, EuiyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 5 147-156 (10 pages)

NariKim, JinHan, EuiyongKim 저
...
- 3,000원
It has been proposed that Ca2⁢-activated K⁢ (KCa) channels play an essential role in vascular tone. The alterations of the properties of coronary KCa channels have not been studied as a possible mechanism for impaired coronary reserve in cardiac hypertrophy. The present studies were carried out to determine the properties of coronary KCa channels in normal and hypertrophied hearts. These channels were measured from rabbit coronary smooth muscle cells using a patch clamp technique....

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