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401.

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...
402.

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
is a gastrointestinal hormone which plays an important role in satiety and gastric motility. It is also widely distributed throughout the central nervous system, where it appears to be involved in the central control of anxiety, feeding behavior and nociception. Two distinct CCK receptor types, CCKA and CCKB, have been found in the brain. Both CCK receptors coexist in the rat nucleus tractus solitarius (NTS), which is the primary center for the coordination of peripheral and central activities...
403.

Relatoinship between Sarcoplasmic Reticular Calcium Release and Na+-Ca2+ Exchange in the Rat Myocardial Contraction

Eun-GiKim, SoonJinKim, ChangMannKo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 14 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.3 4 197-210 (14 pages)

Eun-GiKim, SoonJinKim, ChangMannKo 저
...
- 4,300원
Ca2⁢-depleted (26 Na-0 Ca) buffer application. These enhancements were blocked by caffeine pretreatment with postnatal age-dependent intensities. In the isolated rat ventricular myocytes, stimulation with the voltage protocol roughly mimicked action potential generated a large inward current which was partially blocked by nifedipine or Na⁢ current inhibition. 0 Ca application suppressed the inward current by 39⁑4% while the current was further suppressed after 0 Na-0 Ca...
404.

Regulation of the Contraction Induced by Emptying of Intracellular Ca2+ Stores in Cat Gastric Smooth Muscle

Hye-JungBaek, Sang-SooSim, Duck-JooRhie, ShinHeeYoon, SangJuneHahn, Yang-HyeokJo, Myung-SukKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.2 5 113-120 (8 pages)

Hye-JungBaek, Sang-SooSim, Duck-JooRhie, ShinHeeYoon, SangJuneHahn, Yang-HyeokJo, Myung-SukKim 저
...
- 3,000원
C activity was not affected by the Ca2⁢ store emptying-induced contraction. The contraction was inhibited by voltage-dependent Ca2⁢ channel antagonists dose dependently, but not by TMB-8 (intracellular Ca2⁢ release blocker). Both PKC inhibitors (H-7 and staurosporine) and tyrosine kinase inhibitors (genistein and methyl 2,5-dihydroxycinnamic acid) significantly inhibited the contraction, but calmodulin antagonists (W-7 and trifluoperazine) had no inhibitory effect on the...
405.

The Role of K+ Channels on Spontaneous Action Potential in Rat Clonal Pituitary GH3 Cell Line

HyewhonRhim, Hye-JungBaek, Won-KyungHo, YungEEarm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.2 1 81-90 (10 pages)

HyewhonRhim, Hye-JungBaek, Won-KyungHo, YungEEarm 저
...
- 3,000원
of patch clamp techniques under current- and voltage-clamp recording conditions in rat clonal pituitary GH3 cells. Heterogeneous pattern of SAP activities was changed into more regular mode with elongation of activity duration and afterhyperpolarization by treatment of TEA (10 mM). Under this condition, exposure of the class III antiarrhythmic agent E-4031 (5μM) to GH3 cells hardly affected SAP activities. On the other hand, the main GH3 stimulator thyrotropin-releasing hormone (TRH) still...
406.

The Effect of NO Donor on Contraction, Cytosolic Ca2+ Level and Ionic Currents in Guinea-pig Ileal Smooth Muscle

Seong-ChunKwon, Ki-YoungPark, Duck-SunAhn, Young-HoLee, Bok-SoonKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.1 5 33-40 (8 pages)

Seong-ChunKwon, Ki-YoungPark, Duck-SunAhn, Young-HoLee, Bok-SoonKang 저
...
- 3,000원
the histamine-stimulated increases in muscle tension in parallel with decreased [Ca2⁢]i. Using the patch clamp technique with a holding potential of ⁣60 mV, SIN-1 (10μM) decreased peak Ba currents (IBa) by 30.9⁑5.4% (n=6) when voltage was stepped from ⁣60 mV to ⁢10 mV and this effect was blocked by ODQ (1μM), a soluble guanylyl cyclase inhibitor. Cu/Zn SOD (100 U/ml), the free radical scavenger, had little effect on basal IBa, and SIN-1 (10μM) inhibited peak IBa...
407.

Effect of Propofol, an Intravenous Anesthetic Agent, on KATP Channels of Pancreatic β-cells in Rats

EunJeePark, Dae-KyuSong, JaeKyuCheun, JungInBae, Won-KyungHo, YungEEarm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.1 4 25-31 (7 pages)

EunJeePark, Dae-KyuSong, JaeKyuCheun, JungInBae, Won-KyungHo, YungEEarm 저
...
- 3,000원
from the slope of the relationship between single channel current and pipette potential (⁢20∼⁢100 mV) was not significantly altered by propofol (control: 60.0⁑2.7 pS, 0.1 mM propofol: 58.7⁑3.5 pS). However, mean closed time was surely increased. Above results indicate that propofol blocks the KATP channels in the pancreatic beta cells in the range of its blood concentrations during anesthesia, suggesting a possible effect on insulin secretion and blood glucose level.
408.

Effect of Capsaicin on Delayed Rectifier K+ Current in Adult Rat Dorsal Root Ganglion Neurons

JunghyunHahn, SungkwonChung, HyoweonBang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.1 2 9-14 (6 pages)

JunghyunHahn, SungkwonChung, HyoweonBang 저
...
- 3,000원
curve was well described by the Hill equation with KD value of 19.1μM. The blocking effect of capsaicin was reversible. Capsaicin (10 μM) shifted the steady- state inactivation curve in the hyperpolarizing direction by about 15 mV and increased the rate of inactivation. The voltage dependence of activation was not affected by capsaicin. These multiple effects of capsaicin may suggest that capsaicin bind to the region of K⁢ channel, participating in inactivation process.
409.

Roles of Ca2+-Activated K+ Conductances on Spontaneous Firing Patterns of Isolated Rat Medial Vestibular Nucleus Neurons

SangWooChun, JaeWooJun, ByungRimPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.1 1 1-8 (8 pages)

SangWooChun, JaeWooJun, ByungRimPark 저
...
- 3,000원
To investigate the contributions of intrinsic membrane properties to the spontaneous activity of medial vestibular nucleus (MVN) neurons, we assessed the effects of blocking large and small calcium-activated potassium channels by means of patch clamp recordings. Almost all the MVN neurons recorded in neonatal (P13∼P17) rat were shown to have either a single deep after-hyperpolarization (AHP; type A cells), or an early fast and a delayed slow AHP (type B cells). Among the recorded MVN cells,...
410.

Depression of L-type Ca2+ and Transient Outward K+ Currents in Endotoxin-treated Rat Cardiac Myocytes

KyuSangPark, BooSooLee, InDeokKongJoongWooLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.6 11 623-630 (8 pages)

KyuSangPark, BooSooLee, InDeokKongJoongWooLee 저
...
- 3,000원
(control; 10.90.6 pA/pF). Exposure to endotoxin in vitro also attenuated ICa,L (8.40.4 pA/pF, P＜0.01). The amplitude of Ito on depolarization to 60 mV was reduced in endotoxin treated myocytes (16.51.5 pA/pF, P＜0.01, ex vivo; 20.00.9 pA/pF, P＜0.01 , in vitro) compared to normal myocytes (control; 24.71.0 pA/pF). There was no voltage shift in steady-state inactivation of ICa,L and Ito between groups. These results suggest that endotoxin reduces Ca2⁢ and K⁢ currents of rat cardiac...

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