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291.

Regulation of Adenosine-activated GIRK Channels by Gq-coupled Receptors in Mouse Atrial Myocytes

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.3 5 145-150 (6 pages)

HanaCho 저
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- 3,000원
the control. Pretreatment of atrial myocytes with phenylephrine, endothelin-1, or bradykinin prior to a second application of Ado reduced the amplitude of the second IK(Ado) to 25.5±11.6%, 30.5±5.6%, and 96.0±2.7%, respectively. The potency of IK(Ado) inhibition by GqPCRs was different with that observed in acetylcholine-activated GIRK currents (IK(ACh)) (endothelin-1＞phenylephrine＞bradykinin). IK(Ado) was almost completely inhibited by 500ՌM of the PIP2 scavenger neomycin, suggesting...
292.

Modulation of Presynaptic GABA Release by Oxidative Stress in Mechanically-isolated Rat Cerebral Cortical Neurons

Eu-TeumHahm, Jung-WooSeo, JinyoungHur, Young-WukCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.3 2 127-132 (6 pages)

Eu-TeumHahm, Jung-WooSeo, JinyoungHur, Young-WukCho 저
...
- 3,000원
(mIPSCs) in mechanically isolated rat cerebral cortical neurons retaining intact synaptic boutons. The membrane potential was voltage-clamped at −60 mV and mIPSCs were recorded and analyzed. Superfusion of 1-mM H2O2 gradually potentiated mIPSCs. This potentiating effect of H2O2 was blocked by the pretreatment with either 10,000-unit/mL catalase or 300-ՌM N-acetyl-cysteine. The potentiating effect of H2O2 was occluded by an adenylate cyclase activator, forskolin, and was blocked by a...
293.

A Carbohydrate Fraction, AIP1, from Artemisia Iwayomogi Reduces the Action Potential Duration by Activation of Rapidly Activating Delayed Rectifier K＋ Channels in Rabbit Ventricular Myocytes

WonSunPark, YounKyoungSon, EunAKo, SeongWooChoi, NariKim, Tae-HoonChoi, HyunJooYoun, Su-HyunJo, DaHyeHong, JinHan 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.3 1 119-125 (7 pages)

WonSunPark, YounKyoungSon, EunAKo, SeongWooChoi, NariKim, Tae-HoonChoi, HyunJooYoun, Su-HyunJo, DaHyeHong, JinHan 저
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- 3,000원
We investigated the effects of a hot-water extract of Artemisia iwayomogi, a plant belonging to family Compositae, on cardiac ventricular delayed rectifier K＋ current (IK) using the patch clamp technique. The carbohydrate fraction AIP1 dose-dependently increased the heart rate with an apparent EC50 value of 56.1±5.5Ռg/ml. Application of AIP1 reduced the action potential duration (APD) in concentration-dependent fashion by activating IK without significantly altering the resting membrane...
294.

The Inhibitory Effects of Hydrogen Sulfide on Pacemaker Activity of Interstitial Cells of Cajal from Mouse Small Intestine

ShankarPrasadParajuli, SeokChoi, JunLee, YoungDaeKim, ChanGukPark, ManYooKim, HyunIlKim, CheolHoYeum, JaeYeoulJun 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.2 4 83-89 (7 pages)

ShankarPrasadParajuli, SeokChoi, JunLee, YoungDaeKim, ChanGukPark, ManYooKim, HyunIlKim, CheolHoYeum, JaeYeoulJun 저
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- 3,000원
In this study, we studied whether hydrogen sulfide (H2S) has an effect on the pacemaker activity of interstitial cells of Cajal (ICC), in the small intestine of mice. The actions of H2S on pacemaker activity were investigated using whole-cell patch-clamp technique, intracellular Ca2＋ analysis at 30oC and RT-PCR in cultured mouse intestinal ICC. Exogenously applied sodium hydrogen sulfide (NaHS), a donor of hydrogen sulfide, caused a slight tonic inward current on pacemaker activity in ICC at...
295.

Octyl Gallate Inhibits ATP-induced Intracellular Calcium Increase in PC12 Cells by Inhibiting Multiple Pathways

YujieGuo, YiJaeHong, Hyun-JongJang, Myung-JunKim, Duck-JooRhie, Yang-HyeokJo, SangJuneHahn, ShinHeeYoon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.1 4 21-28 (8 pages)

YujieGuo, YiJaeHong, Hyun-JongJang, Myung-JunKim, Duck-JooRhie, Yang-HyeokJo, SangJuneHahn, ShinHeeYoon 저
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- 3,000원
with octyl gallate markedly inhibited the ATP-induced currents. Therefore, we conclude that octyl gallate inhibits ATP-induced [Ca2＋]i increase in PC12 cells by inhibiting both non-selective P2X receptor-mediated influx of Ca2＋ from extracellular space and P2Y receptor-induced release of Ca2＋ from intracellular stores in protein kinase-independent manner. In addition, octyl gallate inhibits the ATP-induced Ca2＋ responses by inhibiting the secondary activation of voltage-gated Ca2＋ channels.
296.

Polyphenols of Rubus coreanum Inhibit Catecholamine Secretion from the Perfused Adrenal Medulla of SHRs

Byung-SikYu, Duck-MiNa, Mi-YoungKang, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.6 17 517-526 (10 pages)

Byung-SikYu, Duck-MiNa, Mi-YoungKang, Dong-YoonLim 저
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- 3,000원
the corresponding control secretion compared with that of PCRC-treatment alone. The level of NO released from adrenal medulla after the treatment of PCRC (60Ռg/ml) was greatly elevated compared with the corresponding basal level. Taken together, these results demonstrate that PCRC inhibits the CA secretion from the isolated perfused adrenal medulla of the SHRs evoked by stimulation of cholinergic receptors as well as by direct membrane-depolarization. It seems that this inhibitory effect...
297.

Relaxation Patterns of Human Gastric Corporal Smooth Muscle by Cyclic Nucleotides Producing Agents

YoungChulKim, WoongChoi, RohyunSung, HeonKim, RaYoungYou, Seon-MeePark, SeiJinYoun, Mi-JungKim, Young-JinSong, Wen-XieXu, SangJinLee, Hyo-Y 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.6 15 503-510 (8 pages)

YoungChulKim, WoongChoi, RohyunSung, HeonKim, RaYoungYou, Seon-MeePark, SeiJinYoun, Mi-JungKim, Young-JinSong, Wen-XieXu, SangJinLee, Hyo-Y 저
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- 3,000원
contraction with superimposed phasic contractions. FSK, ISO and SNP inhibited high K＋-induced tonic contraction and also ACh-induced phasic and tonic contraction in a reversible manner. Nifedipine (1ՌM), inhibitor of voltage-dependent L-type calcium current (VDCCL), almost abolished ACh-induced phasic contractions. These findings suggest that FSK, ISO and SNP, which are known cyclic nucleotide stimulators, inhibit smooth muscle contraction in human stomach partly via inhibition of VDCCL.
298.

Nitric Oxide Modulation of GABAergic Synaptic Transmission in Mechanically Isolated Rat Auditory Cortical Neurons

Jong-JuLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.6 9 461-467 (7 pages)

Jong-JuLee 저
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- 3,000원
We used whole-cell recordings under voltage clamp to investigate the effect of NO on spontaneous GABAergic synaptic transmission in mechanically isolated rat auditory cortical neurons preserving functional presynaptic nerve terminals. GABAergic spontaneous inhibitory postsynaptic currents (sIPSCs) in the A1 were completely blocked by bicuculline. The NO donor, S-nitroso-N-acetylpenicillamine (SNAP), reduced the GABAergic sIPSC frequency without affecting the mean current amplitude. The SNAP-...
299.

The Influences of G Proteins, Ca2＋, and K＋ Channels on Electrical Field Stimulation in Cat Esophageal Smooth Muscle

JunHongPark, HyunSikKim, SunYoungPark, ChaeukIm, JiHoonJeong, InKyeomKim, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.5 10 393-400 (8 pages)

JunHongPark, HyunSikKim, SunYoungPark, ChaeukIm, JiHoonJeong, InKyeomKim, UyDongSohn 저
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- 3,000원
NO released by myenteric neurons controls the off contraction induced by electrical field stimulation (EFS) in distal esophageal smooth muscle, but in the presence of nitric oxide synthase (NOS) inhibitor, L-NAME, contraction by EFS occurs at the same time. The authors investigated the intracellular signaling pathways related with G protein and ionic channel EFS-induced contraction using cat esophageal muscles. EFS-induced contractions were significantly suppressed by tetrodotoxin (1ՌM)...
300.

Role of T-type Ca2＋ Channels in the Spontaneous Phasic Contraction of Pregnant Rat Uterine Smooth Muscle

Si-EunLee, Duck-SunAhn, Young-HoLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 15 241-249 (9 pages)

Si-EunLee, Duck-SunAhn, Young-HoLee 저
...
- 3,000원
Although extracellular Ca2＋ entry through the voltage-dependent Ca2＋ channels plays an important role in the spontaneous phasic contractions of the pregnant rat myometrium, the role of the T-type Ca2＋ channels has yet to be fully identified. The aim of this study was to investigate the role of the T-type Ca2＋ channel in the spontaneous phasic contractions of the rat myometrium. Spontaneous phasic contractions and [Ca2＋]i were measured simultaneously in the longitudinal strips of female...

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