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271.

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
we found Iberiotoxin- and TEA-sensitive outward rectifying oscillatory current with whole-cell recordings. Single channel analysis showed large conductance K⁢ channels (106 pS of chord conductance at ⁢40 mV in physiological K⁢ gradient). The 106 pS channels were activated by membrane potential and [Ca2⁢]i, consistent with the known properties of BKCa channels. BKCa channels in CRL-1474 were positively regulated by adenylate cyclase activator (10μM forskolin), 8-Br-cyclic...
272.

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
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 1μmol/L nifedipine. Surprisingly, the result showed that the ryanodine-sensitive inward NCX current was well preserved after 10 mmol/L BAPTA to 91 % of that obtained after 1 mmol/L BAPTA. From this result, it is concluded that most of the NCX-induced Ca2⁢ extrusion occurs before the Ca2⁢ diffuses to...
273.

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...
274.

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
B lymphocytes. In both cell types, an intracellular dialysis with Mg2⁢-free solution (140 mM CsCl) induced an outwardly-rectifying MIC current. The peak amplitude of MIC current and the permeability to divalent cation (Mn2⁢) were several fold higher in Bal-17 than WEHI-231. Also, the level of mRNAs for TRPM7, a molecular correspondence of the MIC channel, was significantly higher in Bal-17 cells. The amplitude of MIC was further increased, and the relation between current and voltage...
275.

TASK-1 Channel Promotes Hydrogen Peroxide Induced Apoptosis

JihyunYun, SeungtaeKim, HyoweonBang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.1 9 63-67 (5 pages)

JihyunYun, SeungtaeKim, HyoweonBang 저
...
- 1,500원
Hydrogen peroxide (H2O2) causes oxidative stress and is considered as an inducer of cell death in various tissues. Two-pore domain K⁢ (K2p) channels may mediate K⁢ efflux during apoptotic volume decreases (AVD) in zygotes and in mouse embryos. In the present study, we sought to elucidate linkage between K2p channels and cell death by H2O2. Thus K2p channels (TASK-1, TASK-3, TREK-1, TREK-2) were stably transfected in HEK-293 cells, and cytotoxicity assay was preformed using cell...
276.

D-Amphetamine Causes Dual Actions on Catecholamine Release from the Rat Adrenal Medulla

Geon-HanLim, Gwang-MoonNa, Seon-YoungMin, Yoo-SeokSeo, Chan-WonPark, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.1 7 45-54 (10 pages)

Geon-HanLim, Gwang-MoonNa, Seon-YoungMin, Yoo-SeokSeo, Chan-WonPark, Dong-YoonLim 저
...
- 3,000원
The present study was designed to examine the effect of d-amphetamine on CA release from the isolated perfused model of the rat adrenal gland, and to establish its mechanism of action. D- amphetamine (10∼100μM), when perfused into an adrenal vein of the rat adrenal gland for 60 min, enhanced the CA secretory responses evoked by ACh (5.32⁓10⁣3 M), excess K⁢ (5.6⁓10⁣2 M, a membrane depolarizer), DMPP (10⁣4 M, a selective neuronal nicotinic Nn-receptor agonist)...
277.

Acetylcholine Induces Hyperpolarization Mediated by Activation of K(Ca) Channels in Cultured Chick Myoblasts

DoyunLee, JaeheeHan, Jae-YongPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.1 6 37-44 (8 pages)

DoyunLee, JaeheeHan, Jae-YongPark 저
...
- 3,000원
provide direct evidence that ACh induced Ca2⁢ influx from extracellular solution, which was dramatically increased by valinomycin-mediated hyperpolarization. In addition, ACh hyperpolarized the membrane potential from ⁣12.5⁑3 to ⁣31.2⁑5 mV by generating the outward current through KCa channels. These results suggest that activation of nAChR increases Ca2⁢ influx, which activates KCa channels, thereby hyperpolarizing the membrane potential in chick myoblasts.
278.

Buffering Contribution of Mitochondria to the [Ca2+]i Increase by Ca2+ Influx through Background Nonselective Cation Channels in Rabbit Aortic Endothelial Cells

YoungChulKim, SangJinLee, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.1 5 29-36 (8 pages)

YoungChulKim, SangJinLee, KiWhanKim 저
...
- 3,000원
To prove the buffering contribution of mitochondria to the increase of intracellular Ca2+ level ([Ca2+]i) via background nonselective cation channel (background NSCC), we examined whether inhibition of mitochondria by protonophore carbonylcyanide m-chlorophenylhydrazone (CCCP) affects endothelial Ca2+ entry and Ca2+ buffering in freshly isolated rabbit aortic endothelial cells (RAECs). The ratio of fluorescence by fura-2 AM (R340/380) was measured in RAECs. Biological state was checked by...
279.

Mechanisms of Myotonic Dystrophies 1 and 2

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.1 1 1-8 (8 pages)

TimchenkoLubov 저
...
- 3,000원
Myotonic Dystrophies type 1 and 2 (DM1/2) are neuromuscular disorders which belong to a group of genetic diseases caused by unstable CTG triplet repeat (DM1) and CCTG tetranucleotide repeat (DM2) expansions. In DM1, CTG repeats are located within the 3' untranslated region of myotonin protein kinase (DMPK) gene on chromosome 19q. DM2 is caused by expansion of CCTG repeats located in the first intron of a gene coding for zinc finger factor 9 on chromosome 3q. The CTG and CCTG expansions are...
280.

Ca2+-activated K+ Currents of Pancreatic Duct Cells in Guinea-pig

Han-WookLee, JingchaoLi, Na-YounKoo, ZhengGenPiao, SungMinHwang, Jae-WoongHan, Han-SaemChoi, Jong-HeunLee, JoongSooKim, KyungpyoPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 4 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.6 7 335-338 (4 pages)

Han-WookLee, JingchaoLi, Na-YounKoo, ZhengGenPiao, SungMinHwang, Jae-WoongHan, Han-SaemChoi, Jong-HeunLee, JoongSooKim, KyungpyoPark 저
...
- 1,500원
clamp technique. Both Cl⁣ and K⁢ conductance were found with KCl rich pipette solutions. When the bath solution was changed to low Cl⁣, reversal potentials shifted to the negative side, ⁣75⁑4 mV, suggesting that this current is dominantly selective to K⁢. We then characterized this outward rectifying K⁢ current and examined its Ca2⁢ dependency. The K⁢ currents were activated by intracellular Ca2⁢. 100 nM or 500 nM Ca2⁢ in pipette...

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