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71.

pH-mediated Regulation of Pacemaker Activity in Cultured Interstitial Cells of Cajal

ByungJooKim, JaeHwaLee, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.1 2 7-12 (6 pages)

ByungJooKim, JaeHwaLee, InsukSo, KiWhanKim 저
...
- 3,000원
Interstitial cells of Cajal (ICCs) are pacemakers in gastrointestinal tracts, regulating rhythmicity by activating nonselective cation channels (NSCCs). In the present study, we investigated the general characteristics and pH-mediated regulation of pacemaker activity in cultured interstitial cells of Cajal. Under voltage clamp mode and at the holding potential of ⁣60 mV, the I-V relationships and difference current showed that there was no reversal potential and voltage-independent inward...
72.

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....
73.

Two Types of Voltage-activated Calcium Currents in Goldfish Horizontal Cells

Sun-SookPaik, Sun-HoBai, Chang-SubJung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.5 3 269-274 (6 pages)

Sun-SookPaik, Sun-HoBai, Chang-SubJung 저
...
- 3,000원
using a patch-clamping configuration: a transient type current and a sustained type current. The cell was held at ⁣40 mV, and the prepulse step of ⁣90 mV was applied before command pulse between ⁣65 and ⁢55 mV. The transient Ca2⁢ current was activated by depolarization to around ⁣50 mV from a prepulse voltage of ⁣90 mV lasting at least 400 ms and reached a maximal value near ⁣25 mV. On the other hand, the sustained Ca2⁢ current was induced by...
74.

The Role of Mitochondrial ATP-sensitive Potassium Channel on Intestinal Pacemaking Activity

ByungJooKim, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.4 4 209-214 (6 pages)

ByungJooKim, KiWhanKim 저
...
- 3,000원
Interstitial cells of Cajal (ICCs) are the pacemaker cells that generate slow waves in the gastrointestinal (GI) tract. In the present study, we investigated the effect of mitochondrial ATP-sensitive potassium (mitoKATP) channel on pacemaking activity in cultured ICCs from murine small intestine by using whole-cell patch clamp techniques. Under current clamp mode, at 10μM glibenclamide, there was no change in pacemaking activity of ICCs. At 30μM glibenclamide, an inhibitor of the ATP sensitive...
75.

The Effect of External Divalent Cations on Intestinal Pacemaking Activity

ByungJooKim, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.4 3 203-208 (6 pages)

ByungJooKim, KiWhanKim 저
...
- 3,000원
Electrical rhythmicity in the gastrointestinal (GI) muscles is generated by pacemaker cells, known as interstitial cells of Cajal (ICC). In the present study, we investigated the effect of external divalent cations on pacemaking activity in cultured ICC from murine small intestine by using whole-cell patch clamp techniques. ICC generated pacemaker currents under a voltage clamp or electrical pacemaker potentials under a current clamp, and showed a mean amplitude of ⁣500⁑50 pA or...
76.

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
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 bisindolylmaleimide (BIM). KATP channel activity was not increased by 4α-PDD. In excised inside- out patches, PKC stimulated KATP channels in the presence of 1 mM ATP, and this effect was abolished in the...
77.

Modulation of Large Conductance Ca2+-activated K+ Channel of Skin Fibroblast (CRL-1474) by Cyclic Nucleotides

JihyunYun, SeungtaeKim, HyoweonBang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 4 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.2 9 131-134 (4 pages)

JihyunYun, SeungtaeKim, HyoweonBang 저
...
- 1,500원
Potassium channels in human skin fibroblast have been studied as a possible site of Alzheimer disease pathogenesis. Fibroblasts in Alzheimer disease show alterations in signal transduction pathway such as changes in Ca2⁢ homeostasis and/or Ca2⁢-activated kinases, phosphatidylinositol cascade, protein kinase C activity, cAMP levels and absence of specific K⁢ channel. However, little is known so far about electrophysiological and pharmacological characteristics of...
78.

Na+-Ca2+ Exchange Curtails Ca2+ before Its Diffusion to Global Ca2+i in the Rat Ventricular Myocyte

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.2 4 95-102 (8 pages)

Sung-WanAhnChangMannKo 저
...
- 3,000원
whole-cell configuration. Global Ca2⁢i transient was controlled by an internal dialysis with different concentrations of BAPTA added in the pipette. During stimulation with a ramp pulse from ⁢100 mV to ⁣100 mV for 200 ms, global Ca2⁢i transient was suppressed only mildly, and completely at 1 mmol/L, and 10 mmol/L BAPTA, respectively. In these situations, ryanodine-sensitive inward NCX current was compared using 100μmol/L ryanodine, Na⁢ depletion, 5 mmol/L NiCl2 and...
79.

Morphine-induced Modulation of Nociceptive Spinal Dorsal Horn Neuronal Activities after Formalin-induced Inflammatory Pain

JooMinPark, KangWuLi, SungJunJung, JunKim, SangJeongKim, 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.2 2 77-86 (10 pages)

JooMinPark, KangWuLi, SungJunJung, JunKim, SangJeongKim, 저
...
- 3,000원
In this study, we examined the morphine-induced modulation of the nociceptive spinal dorsal horn neuronal activities before and after formalin-induced inflammatory pain. Intradermal injection of formalin induced time-dependent changes in the spontaneous activity of nociceptive dorsal horn neurons. In naïve cats before the injection of formalin, iontophoretically applied morphine attenuated the naturally and electrically evoked neuronal responses of dorsal horn neurons. However, neuronal...
80.

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
...
- 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...

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