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91.

Effects of Pharmacological Modulators of Ca2+-activated K+ Channels on Proliferation of Human Dermal Fibroblast

JihyunYun, TaehoKim, SoonchulMyung, HyoweonBang, InjaLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.2 6 95-100 (6 pages)

JihyunYun, TaehoKim, SoonchulMyung, HyoweonBang, InjaLim 저
...
- 3,000원
Employing electrophysiological and cell proliferation assay techniques, we studied the effects of Ca2⁢- activated K⁢ channel modulators on the proliferation of human dermal fibroblasts, which is important in wound healing. Macroscopic voltage-dependent outward K⁢ currents were found at about ⁣40 mV stepped from a holding potential of ⁣70 mV. The amplitude of K⁢ current was increased by NS1619, a specific large-conductance Ca2⁢-activated K⁢ (BK)...
92.

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
in the voltage range (⁣20 mV∼0 mV) for channel opening, suggesting an open channel interaction. Genistein (20μM) produced use-dependent block of Kv3.1 at a stimulation frequency of 1 Hz. The voltage dependence of steady-state inactivation of Kv3.1 was not changed by 20μM genistein. Our results indicate that genistein blocks directly Kv3.1 currents in concentration-, voltage-, time-dependent manners and the action of genistein on Kv3.1 is independent of tyrosine kinase inhibition.
93.

Lysophosphatidylcholine Attenuates Endothelium-dependent Relaxation Responses through Inhibition of ACh-induced Endothelial [Ca2+]i Increase

Seong-ChunKwon, Yong-HoLee, TaicksangNam, Duck-SunAhn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.1 5 25-30 (6 pages)

Seong-ChunKwon, Yong-HoLee, TaicksangNam, Duck-SunAhn 저
...
- 3,000원
Lysophosphatidylcholine (LPC), which accumulates in atherosclerotic arteries, has been reported to inhibit endothelium-dependent relaxation (EDR) in many different species. However, the underlying mechanism of LPC-induced inhibition of EDR is still uncertain. In the present study, we measured simultaneously both isometric tension and cytosolic free Ca2⁢ ([Ca2⁢]i) in rabbit carotid strips, and examined the effect of LPC on tension and [Ca2⁢]i. In carotid strips with...
94.

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....
95.

Helicobacter pylori Vacuolating Toxin Exhibits Polar Activity of Cl- Secretion and Secretory Response to Carbachol in T84 Cells

NanGeJin, YongRiJin, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.5 8 289-293 (5 pages)

NanGeJin, YongRiJin, InsukSo, KiWhanKim 저
...
- 1,500원
To investigate whether VacA (vacuolating toxin) produced by Helicobacter pylori `Korean stain 99 induces intestinal secretion, purified VacA was added to T84 cell monolayers mounted in Ussing chambers, and electrical parameters were monitored. Mucosal addition of low pH-pretreated VacA increased short circuit current (Isc). The effect was time- and dose-dependent and saturable. The time-to-peak Isc was concentration-dependent. Chloride channel inhibitors, niflumic acid or 5-...
96.

Comparison of Vasodilator Effects of Platycodin D and D3 in Rats

Dong-YoonLim, Byeong-CheolKim, Eun-BangLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.3 5 149-155 (7 pages)

Dong-YoonLim, Byeong-CheolKim, Eun-BangLee 저
...
- 3,000원
The aim of the present study was to examine the effects of platycodin D and D3, which are active components derived from the roots of Platycodon grandiflorum A. DC., on the contractile force of the i3olated rat aorta and blood pressure of the anesthetized rat, and also to elucidate its mechanism of action. Both phenylephrine (an adrenergic α1-receptor agonist) and high potassium (a membrane- depolarizing agent) caused great contractile responses in the isolated aortic strips. Platycodin D at...
97.

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...
98.

Congenital LQT Syndromes From Gene to Torsade de Pointes

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

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

EdwardCarmeliet 저
...
- 3,000원
Congenital Long QT syndrome (LQTs) is a relatively rare pathologic disorder but results frequently in sudden cardiac death. Of the six LQTs that have been clinically described, five have been worked out for their genetic and biophysical profile. Most are generated by mutations which cause a loss of function in two delayed K⁢currents, iKs and iKr. One syndrome is generated by mutations in the Na⁢ channel which causes essentially a gain of function in the channel. Clinically the...
99.

G Protein-Coupled Receptor Signaling in Gastrointestinal Smooth Muscle

UyDongSohn, DongSeokKim, KarnamSMurthy 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.4 1 287-297 (11 pages)

UyDongSohn, DongSeokKim, KarnamSMurthy 저
...
- 4,000원
Contraction of smooth muscle is initiated by an increase in cytosolic Ca2⁢ leading to activation of Ca2⁢/ calmodulin-dependnet myosin light chain (MLC) kinase and phosphorylation of MLC. The types of contraction and signaling mechanisms mediating contraction differ depending on the region. The involvement of these different mechanisms varies depending on the source of Ca2⁢ and the kinetic of Ca2⁢ mobilization. Ca2⁢ mobilizing agonists stimulate different...
100.

Stationary Outward and Transient Ca2+-Dependent Currents in Hamster Oocytes

Yang-MiKim, Jae-HeeHan, Jong-SuKim, Seong-GeunHong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.5 9 403-408 (6 pages)

Yang-MiKim, Jae-HeeHan, Jong-SuKim, Seong-GeunHong 저
...
- 3,000원
a steady-state outward component (I∞). Ito was transiently followed by the cessation of inward Ca2⁢ current (ICa), and its current-voltage (I-V) relation was a mirror image of that of ICa. Either blockade of ICa by Co2⁢ or replacement of Ca2⁢ with Sr2⁢ abolished Ito without change in I∞. Intracellular EGTA (10 mM) inhibited Ito but not I∞. suggesting strongly that generation of Ito requires intracellular Ca2⁢. Apamin (1 nM) abolished selectively Ito, indicating...

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