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251.

Functional Abnormalities of HERG Mutations in Long QT Syndrome 2 (LQT2)

MasayasuHIRAOKA 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.5 1 367-371 (5 pages)

MasayasuHIRAOKA 저
...
- 1,500원
could interact with wild type HERG to form functional tetramer and caused dominant negative suppression with co-injection with wild type HERG showing variable effects on current amplitude, voltage dependence, and kinetics of activation and inactivation. Two missense mutants at pore regions of HERG found in Japanese LQT2 (A614V and V630L) showed accentuated inward rectification due to a negative shift in steady-state inactivation and fast inactivation. One mutation in S4 region (R534C) produced a...
252.

Extracellular ATP Stimulates Na+ and CI- Transport through the Activation of Multiple Purinergic Receptors on the Apical and Basolateral Membranes in M-l Mouse Cortical Collecting Duct Cells

JinSupJung, SookMiHwang, RyangHwaLee, SooKyungKang, JaeSukWoo, YongKeunKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.3 5 231-241 (11 pages)

JinSupJung, SookMiHwang, RyangHwaLee, SooKyungKang, JaeSukWoo, YongKeunKim 저
...
- 4,000원
collagen-coated permeable support and short circuit current (Isc) was measured. M-1 cells developed amiloride-sensitive current 5∼7 days after seeding. Apical and basolateral addition of ATP induced increase in Isc in M-1 cells, which was partly retained in Na⁢-free or Cl⁣-free solution, indicating that ATP increased Na⁢ absorption and Cl⁣ secretion in M-1 cells. Cl⁣ secretion was mediated by the activation of apical cystic fibrosis transmembrane regulator (CFTR)...
253.

Activation of ATP-sensitive Potassium Channels by the Predominant Metabolite of Isoflurane in Rabbit Ventricular Myocytes

JinHan, NariKim, EuiyongKim, SungjuKim, KangheeCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 7 165-175 (11 pages)

JinHan, NariKim, EuiyongKim, SungjuKim, KangheeCho 저
...
- 4,000원
Background: Recent in vivo experimental evidence suggests that isoflurane-induced cardioprotection may involve KATP channel activation. However, it was demonstrated that isoflurane inhibited KATP channel activities in the inside-out patch mode. To explain this discrepancy, the present investigation tested the hypothesis that a metabolite of isoflurane, trifluoroacetic acid (TFA), contributes to isoflurnae-induced cardioprotection via KATP channel activation during myocardial ischemia and...
254.

N-Type Calcium Channels

KeithS.Elmslie 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.6 12 525-530 (6 pages)

KeithS.Elmslie 저
...
- 3,000원
The early studies of cardiac and smooth muscle cells provided evidence for two different calcium channels, the L-type (also called high-voltage activated [HVA]) and the T-type (low-voltage activated [LVA]). These calcium channels provided calcium for muscle contractions and pace-making activities. As might be expected, the number of different calcium channels increased when researchers studied neurons and the identification of the neuronal calcium channel has proven to be much more difficult...
255.

The Effect of Carbon Monoxide on Contraction, Cytosolic Ca2+ Level and Ionic Currents in Guinea Pig Ileal Smooth Muscle

SeongChunKwon, SeungSooChung, YunSukKim, TaickSangNam 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.6 6 471-477 (7 pages)

SeongChunKwon, SeungSooChung, YunSukKim, TaickSangNam 저
...
- 3,000원
a holding potential of ⁣60 mV, we found that CO had little effect on the peak Ba currents (IBa) when voltage was stepped from ⁣60 mV to 0 mV. In addition, CO showed no effect on the depolarization-activated outward K⁢ currents in the all potential ranges. We conclude that CO inhibits smooth muscle contraction mainly by decreasing the Ca2⁢ sensitivity of contractile elements via a cGMP-dependent pathway, not by involving L-type Ca2⁢ and outward-potassium currents in...
256.

Asymmetrical Distribution of P2Y Nucleotide Receptors in Rabbit Inner Medullary Collecting Duct Cells

JaeSukWoo, JinSupJung, YongKeunKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.4 6 311-318 (8 pages)

JaeSukWoo, JinSupJung, YongKeunKim 저
...
- 3,000원
We cultured the rabbit inner medullary collecting duct (IMCD) cells as monolayers on collagen-coated membrane filters, and investigated distribution of the P2Y receptors by analyzing nucleotide-induced short circuit current (Isc) responses. Exposure to different nucleotides of either the apical or basolateral surface of cell monolayers stimulated Isc. Dose-response relationship and cross-desensitization studies suggested that at least 3 distinct P2Y receptors are expressed asymmetrically on the...
257.

Effects of Prostaglandin F2α on Membrane Potentials and K+ Currents in Rabbit Middle Cerebral Arterial Cells

NariKim, JinHan, WonGueKim, EuiyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.4 5 301-309 (9 pages)

NariKim, JinHan, WonGueKim, EuiyongKim 저
...
- 3,000원
The purpose of our investigation was to examine the effects of prostaglandin F2α (PGF2α) on membrane potentials, Ca2⁢-activated K⁢ (KCa) channels, and delayed rectifier K⁢ (KV) channels using the patch-clamp technique in single rabbit middle cerebral arterial smooth muscle cells. PGF2α significantly hyperpolarized membrane potentials and increased outward whole-cell K⁢ currents. PGF2α increased open-state probability of KCa channels without the change of the open and...
258.

Effects of Cholecystokinin Octapeptide on Neuronal Activities in the Rat Nucleus Tractus Solitarius

HyewhonRhim, Chan-WoongPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.4 2 275-281 (7 pages)

HyewhonRhim, Chan-WoongPark 저
...
- 3,000원
functions. In order to study ionic actions of CCK on each type of receptor, we investigated the effects of CCK-8S on neurons located in the NTS of the rat using whole-cell patch-clamp recordings in brainstem slices. Application of CCK-8S, under current clamp, produced a membrane depolarization accompanied by action potential firing. This CCK-evoked excitation was dose-dependent (10 nM∼10μM) and observed in more than 60% of NTS neurons. Under voltage clamp conditions, CCK-8S induced an inward...
259.

Cardiac Response to Head-Out Water Immersion in Man

JangKyuChoi, Won-KunPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.3 10 253-261 (9 pages)

JangKyuChoi, Won-KunPark 저
...
- 3,000원
and the indices of peak velocity and peak acceleration of aortic blood flow were all increased by ∼30%, indicating that the left ventricular contractile force was enhanced by immersion. These results suggest that the increase in stroke volume during immersion is characterized by an increase in ventricular ejection time and aortic blood flow velocity, which may be primarily attributed to the increased cardiac preload and the muscle length-dependent increase in myocardial contractile force.
260.

Neurotensin Enhances Gastric Motility in Antral Circular Muscle Strip of Guinea-pig

TaeYongKoh, SungJoonKim, SangJinLee, TongMookKang, JaeYeoulJun, JaeHoonSim, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.3 7 227-234 (8 pages)

TaeYongKoh, SungJoonKim, SangJinLee, TongMookKang, JaeYeoulJun, JaeHoonSim, InsukSo, KiWhanKim 저
...
- 3,000원
Many reports suggest that neurotensin (NT) in the gastrointestinal tract may play a possible role as a neurotransmitter, a circulating hormone, or a modulator of motor activity. NT exerts various actions in the intestine; it produces contractile and relaxant responses in intestinal smooth muscle. This study was designed to investigate the effect of NT on motility of antral circular muscle strips in guinea-pig stomach. To assess the role of Ca2⁢ influx in underlying mechanism, slow waves...

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