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361.

Heterogeneity of the SR-dependent Inward Na+-Ca2+ Exchange Current in the Heavily Ca2+-buffered Rat Ventricular Myocytes

Kyung-BongYoon, Sung-WanAhn, ChangMannKo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.2 6 101-110 (10 pages)

Kyung-BongYoon, Sung-WanAhn, ChangMannKo 저
...
- 3,000원
Voltage-sensitive release mechanism was pharmacologically dissected from the Ca2⁢-induced Ca2⁢ release in the SR Ca2⁢ release in the rat ventricular myocytes patch-clamped in a whole-cell mode. SR Ca2⁢ release process was monitored by using forward-mode Na⁢-Ca2⁢ exchange after restriction of the interactions between Ca2⁢ from SR and Na⁢-Ca2⁢ exchange within micro-domains with heavy cytosolic Ca2⁢ buffering with 10 mM BAPTA. During...
362.

Presynaptic Mechanism Underlying Regulation of Transmitter Release by G Protein Coupled Receptors

TomoyukiTakahashi, YoshinaoKajikawa, MasahiroKimura, NaotoSaitoh, TetsuhiroTsujimoto 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.2 1 69-76 (8 pages)

TomoyukiTakahashi, YoshinaoKajikawa, MasahiroKimura, NaotoSaitoh, TetsuhiroTsujimoto 저
...
- 3,000원
for GPCRs such as GABAB receptors, group III metabotropic glutamate receptors (mGluRs), adenosine A1 receptors, or adrenaline α2 receptors, attenuate evoked transmitter release via inhibiting voltage-activated Ca2⁢ currents without affecting voltage-activated K⁢ currents or inwardly rectifying K⁢ currents. Furthermore, inhibition of voltage-activated Ca2⁢ currents fully explains the magnitude of GPCR-mediated presynaptic inhibition, indicating no essential involvement of...
363.

Efffects of Fluoxetine on ATP-induced Calcium Signaling in PC12 Cells

Yeo-MinLee, HeeJungKim, SunHwaHong, Myung-JunKim, DoSikMin, Duck-Joo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.1 9 57-63 (7 pages)

Yeo-MinLee, HeeJungKim, SunHwaHong, Myung-JunKim, DoSikMin, Duck-Joo 저
...
- 3,000원
of voltage-gated ion channels. We examined whether fluoxetine affects ATP-induced calcium signaling in PC12 cells by using fura-2-based digital calcium imaging and assay for [3H]-inositol phosphates (IPs). Treatment with ATP (100μM) for 2 min induced [Ca2⁢]i increases. The ATP-induced [Ca2⁢]i increases were significantly decreased by removal of extracellular Ca2⁢ and treatment with the inhibitor of endoplasmic reticulum Ca2⁢ ATPase thapsigargin (1μM). Treatment with...
364.

Role of Stretch-Activated Channels in Stretch-Induced Changes of Electrical Activity

JaeBoumYoum, Su-HyunJo, ChaeHunLeem, Won-KyungHo, YungE. 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.1 6 33-41 (9 pages)

JaeBoumYoum, Su-HyunJo, ChaeHunLeem, Won-KyungHo, YungE. 저
...
- 3,000원
We developed a cardiac cell model to explain the phenomenon of mechano-electric feedback (MEF), based on the experimental data with rat atrial myocytes. It incorporated the activity of ion channels, pumps, exchangers, and changes of intracellular ion concentration. Changes in membrane excitability and Ca2⁢ transients could then be calculated. In the model, the major ion channels responsible for the stretch-induced changes in electrical activity were the stretch-activated channels (SACs)....
365.

Nitric Oxide (NO) Inhibites the Neuronal Activities in the Rat Nucleus Tractus Solitarius

MiWonKim, MunSungPark, SunYoulRyu, JiYeonJung, YeonJinJeong, Sun 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.1 2 7-15 (9 pages)

MiWonKim, MunSungPark, SunYoulRyu, JiYeonJung, YeonJinJeong, Sun 저
...
- 3,000원
Nitric oxide (NO) system has been implicated in a wide range of physiological functions in the nervous system. However, the roleof NO in regulating the neural activity in the gustatory zone of nucleus tractus solitarius (NTS) has not been established. The present study was aimed to investigate the role of NO in the gustatory NTS neurons. Sprague-Dawley rats, weighing about 50 g, were used. Whole cell patch recording and immunohistochemistry were done to determine the electrophysiological...
366.

A Possible Role of Kainate Receptors in C2C12 Skeletal Myogenic Cells

Jae-YongPark, JaeheeHan, Seong-GeunHong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.6 13 375-379 (5 pages)

Jae-YongPark, JaeheeHan, Seong-GeunHong 저
...
- 1,500원
Ca2⁢ influx appears to be important for triggering myoblast fusion. It remains, however, unclear how Ca2⁢ influx rises prior to myoblast fusion. Recently, several studies suggested that NMDA receptors may be involved in Ca2⁢ mobilization of muscle, and that Ca2⁢ influx is mediated by NMDA receptors in C2C12 myoblasts. Here, we report that other types of ionotropic glutamate receptors, non-NMDA receptors (AMPA and KA receptors), are also involved in Ca2⁢ influx in...
367.

The Effect of Carbon Monoxide on L-type Calcium Channel Currents in Human Intestinal Smooth Muscle Cells

InjaLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.6 10 357-362 (6 pages)

InjaLim 저
...
- 3,000원
of human jejunal circular smooth muscle cells. Cells were voltage clamped with 10 mM barium (Ba2⁢) as the charge carrier, and CO was directly applied into the bath to avoid perfusion induced effects on the recorded currents. 0.2% CO was increased barium current (IBa) by 15⁑2% (mean⁑S.E., p＜0.01, n=11) in the cells. To determine if the effects of CO on barium current were mediated through the cGMP pathway, cells were pretreated with 1-H-[1,2,4]oxadiazolo[4,3,-a]quinoxalin-1-one...
368.

Stretch-activated K+ Channels in Rat Atrial Myocytes

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.6 8 341-318 (8 pages)

JaeBoumYoum 저
...
- 3,000원
Mechanical stimuli to the cardiac myocytes initiate many biochemical and physiological events. Stretch-activated cation channels have been suggested to mediate these events. In this study, cell-attached and inside-out excised-patch clamp methods were used to identify stretch-activated cation channels in adult rat atrial myocytes. Channel openings were increased in cell-attached configuration when negative pressure was applied to the pipette, and also in inside-out excised patches by negative...
369.

Reduction of Muscarinic K+ Channel Activity by Transferrin in Ischemic Rat Atrial Myocytes

KyeongTaePark, DawonKang, JaeheeHan, Jae-YongPark, Chang-GiHur, Seong-GeunHong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.6 7 333-339 (7 pages)

KyeongTaePark, DawonKang, JaeheeHan, Jae-YongPark, Chang-GiHur, Seong-GeunHong 저
...
- 3,000원
It has been demonstrated that an unidentified cytosolic factor(s) reduces KACh channel function. Therefore, this study attempted to elucidate the cytosolic factor. Fresh cytosol isolated from normal heart (FC) depressed the KACh channel activity, but cytosol isolated from the ischemic hearts (IC) did not modulate the channel function. Electrophorectic analysis revealed that a protein of ∼80 kDa was markedly reduced or even lost in IC. By using peptide sequencing analysis and Western blot, this...
370.

A Simple and Accurate Method for Determining Antioxidative Activity

JinWooBaeMooHongLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 4 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.5 5 275-278 (4 pages)

JinWooBaeMooHongLee 저
...
- 1,500원
Antioxidative activity is an important factor in inhibiting oxidative stress. The usual methods for determining antioxidative activity are time-consuming and cumbersome. They are also indirect processes that use biological material such as brain or liver microsome. This study therefore proposed a new method. Redoxpotential was determined using galvanic cell with or without the addition of various antioxidants or herbal extracts in zinc sulfate solution. The result was compared with the results...

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