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481.

Modeling of Arrhythmogenic Automaticity Induced by Stretch in Rat Atrial Myocytes

JaeBoumYoum, ChaeHunLeem, YinHuaZhang, NariKim, JinHan, YungE.Earm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.5 8 267-274 (8 pages)

JaeBoumYoum, ChaeHunLeem, YinHuaZhang, NariKim, JinHan, YungE.Earm 저
...
- 3,000원
Since first discovered in chick skeletal muscles, stretch-activated channels (SACs) have been proposed as a probable mechano-transducer of the mechanical stimulus at the cellular level. Channel properties have been studied in both the single-channel and the whole-cell level. There is growing evidence to indicate that major stretch-induced changes in electrical activity are mediated by activation of these channels. We aimed to investigate the mechanism of stretch-induced automaticity by...
482.

(? )-Epigallocatechin Gallate Inhibits the Pacemaker Activity of Interstitial Cells of Cajal of Mouse Small Intestine

KweonYoungKim, SooJinChoi, HyukJinJang, DongChuanZuo, PawanKumarShahi, ShankarPrasadParajuli, CheolHoYeum, PyungJinYoon, SeokChoi, JaeYeo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.3 4 111-116 (6 pages)

KweonYoungKim, SooJinChoi, HyukJinJang, DongChuanZuo, PawanKumarShahi, ShankarPrasadParajuli, CheolHoYeum, PyungJinYoon, SeokChoi, JaeYeo 저
...
- 3,000원
The effects of (−)-epigallocatechin gallate (EGCG) on pacemaker activities of cultured interstitial cells of Cajal (ICC) from murine small intestine were investigated using whole-cell patch-clamp technique at 30oC and Ca2＋ image analysis. ICC generated spontaneous pacemaker currents at a holding potential of −70 mV. The treatment of ICC with EGCG resulted in a dose-dependent decrease in the frequency and amplitude of pacemaker currents. SQ-22536, an adenylate cyclase inhibitor, and...
483.

Relaxant Effect of Spermidine on Acethylcholine and High K+- induced Gastric Contractions of Guinea-Pig

YoungChulKim, JaeHoonSim, Woong-Choi, ChanHyungKim, Ra-YoungYou, Wen-XieXu, SangJinLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.2 4 59-64 (6 pages)

YoungChulKim, JaeHoonSim, Woong-Choi, ChanHyungKim, Ra-YoungYou, Wen-XieXu, SangJinLee 저
...
- 3,000원
In our previous study, we found that spermine and putrescine inhibited spontaneous and acetylcholine (ACh)-induced contractions of guinea-pig stomach via inhibition of L-type voltage- dependent calcium current (VDCCL). In this study, we also studied the effect of spermidine on mechanical contractions and calcium channel current (IBa), and then compared its effects to those by spermine and putrescine. Spermidine inhibited spontaneous contraction of the gastric smooth muscle in a...
484.

Expression of Ca2+-activated K+ Channels and Their Role in Proliferation of Rat Cardiac Fibroblasts

SeyongChoi, WooseokLee, JihyunYun, JeongseokSeo, InjaLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.2 3 51-58 (8 pages)

SeyongChoi, WooseokLee, JihyunYun, JeongseokSeo, InjaLim 저
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- 3,000원
to structural, biochemical, mechanical and electrical properties of the myocardium. Nonetheless, their cardiac functions, especially electrophysiological properties, have often been disregarded in studies. Ca2+-activated K+ (KCa) channels can control Ca2+ influx as well as a number of Ca2+-dependent physiological processes. We, therefore, attempted to identify and characterize KCa channels in rat Cardiac fibroblasts. First, we showed that the cells cultured from the rat ventricle were cardiac...
485.

Post-ischemic Time-dependent Activity Changes of Hippocampal CA1 cells of the Mongolian Gerbils

Moo-HoWon, Hyung-CheulShin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 4 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.6 3 249-252 (4 pages)

Moo-HoWon, Hyung-CheulShin 저
...
- 1,500원
Changes of single unit activity of CA1 hippocampus region were investigated in anesthetized Mongolian gerbils for six days following transient ischemia. Ischemia was produced immediately before the implantation of micro-wire recording electrodes. In control animals receiving pseudo-ischemic surgery, neither spontaneous neuronal activities (5.70±0.4 Hz) nor the number of recorded neurons per animal changed significantly for six days. Correlative firings among simultaneously recorded neurons...
486.

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...
487.

Prostaglandin E1 Increases cGMP Levels in Beating Rabbit Atria: Lack of Effects of PGE1-induced Cyclic Nucleotides on Secretory and Contractile Functions

XuanShunJin, HeXiuQuan, SunYoungKim, SungHunPark, SungZooKim, HoSubLee, KyungWooCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.5 3 175-182 (8 pages)

XuanShunJin, HeXiuQuan, SunYoungKim, SungHunPark, SungZooKim, HoSubLee, KyungWooCho 저
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- 3,000원
Members of prostaglandin (PG) E-series elicit cellular effects mainly through adenylyl cyclase-cAMP signaling. The role of PGE2-induced increase in cAMP has been shown to be compartmentalized in the cardiac myocytes: PGE2-induced increase of cAMP is not involved in the control of cardiomyocytic contraction. The purpose of the present study was to define the effect of PGE1 on the cGMP levels and the role of PGE1 in the atrial secretory function. Experiments were performed in perfused beating...
488.

Influence of ω-Conotoxin GVIA, Nifedipine and Cilnidipine on Catecholamine Release in the Rat Adrenal Medulla

Byung-SikYu, Byeong-CheolKim, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.1 4 21-30 (10 pages)

Byung-SikYu, Byeong-CheolKim, Dong-YoonLim 저
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- 3,000원
The present study was designed to establish comparatively the inhibitory effects of cilnidipine (CNP), nifedipine (NIF), and ω-conotoxin GVIA (CTX) on the release of CA evoked by cholinergic stimulation and membrane depolarization from the isolated perfused model of the rat adrenal medulla. CNP (3 μM), NIF (3μM), and CTX (3μM) perfused into an adrenal vein for 60 min produced greatly inhibition in CA secretory responses evoked by ACh (5.32⁓10⁣3 M), DMPP (10⁣4 M for 2 min),...
489.

Inhibition of Pacemaker Activity of Interstitial Cells of Cajal by Hydrogen Peroxide via Activating ATP-sensitive K+ Channels

SeokChoi, ShankarPrasadParajuli, HyeonSookCheong, DilliParasadPaudyal, CheolHoYeum, PyungJinYoon, JaeYeoulJun 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.1 3 15-20 (6 pages)

SeokChoi, ShankarPrasadParajuli, HyeonSookCheong, DilliParasadPaudyal, CheolHoYeum, PyungJinYoon, JaeYeoulJun 저
...
- 3,000원
in a dose-dependent manner. Because the properties of H2O2 action on pacemaker currents were same as the effects of pinacidil (ATP-sensitive K⁢ channels opener), we tested the effects of glibenclamide (ATP-sensitive K⁢ channels blocker) on H2O2 action in ICC, and found that the effects of H2O2 on pacemaker currents were blocked by co- or pre- treatment of glibenclamide. These results suggest that H2O2 inhibits pacemaker currents of ICC by activating ATP-sensitive K⁢ channels
490.

c-fos mRNA Expression in the Vestibular System following Hypergravity Stimulation in Rats

GuangShiJin, JaeHyoLee, JaeHeeLee, MoonYoungLee, MinSunKim, YuanZheJin, JeongHoonSong, ByungRimPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.1 1 1-7 (7 pages)

GuangShiJin, JaeHyoLee, JaeHeeLee, MoonYoungLee, MinSunKim, YuanZheJin, JeongHoonSong, ByungRimPark 저
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- 3,000원
Altered environmental gravity, including both hypo- and hypergravity, may result in space adaptation syndrome. To explore the characteristics of this adaptive plasticity, the expression of immediate early gene c-fos mRNA in the vestibular related tissues following an exposure to hypergravity stimulus was determined in rats. The animals were subjected to a force of 2 g (twice earth's gravity) for 1, 3, or 12 h, and were examined poststimulus at 0, 2, 6, 12, and 24 h. RT-PCR (reverse transcription...

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