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301.

Thiol-dependent Redox Mechanisms in the Modification of ATP-Sensitive Potassium Channels in Rabbit Ventricular Myocytes

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.1 4 15-23 (9 pages)

JinHan, NariKim, DangVanCuong, ChunghuiKim, EuiyongKim 저
...
- 3,000원
on open and closed time distributions shorter than 4 ms. On the other hand, DTNB decreased the life time of bursts and increased the interburst interval. N-ethylmaleimide (NEM), a substance that reacts with thiol groups of cystein residues in proteins, induced irreversible closure of the channel. The thiol oxidizing agents (DTNB, NEM) inhibited of the KATP channel only, when added to the cytoplasmic side. The results suggested that metabolism-induced changes in the thiol redox can also modulate...
302.

Influence of Tacrine on Catecholamine Secretion in the Perfused Rat Adrenal Gland

Seok-JeongJang, Won-HoYang, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.4 6 207-214 (8 pages)

Seok-JeongJang, Won-HoYang, Dong-YoonLim 저
...
- 3,000원
60 min inhibited CA secretory responses evoked by ACh (5.32⁓10⁣3 M), DMPP (a selective neuronal nicotinic agonist, 10⁣4 M for 2 min) and McN-A-343 (a selective muscarinic M1-agonist, 10⁣4 M for 2 min) in relatively dose- and time- dependent manners. However, tacrine failed to affect CA secretion by high K⁢ (5.6⁓10⁣2 M). Tacrine itself at concentrations used in the present experiments did not also affect spontaneous CA output. Furthermore, in the presence...
303.

Increases in Effective Cleft Glutamate Concentration During Expression of LTP

SuHyunJung, SukwooChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.2 8 113-120 (8 pages)

SuHyunJung, SukwooChoi 저
...
- 3,000원
Long-term potentiation (LTP) at hippocampal CA3-CA1 synapses is often associated with increases in quantal size, traditionally attributed to enhanced availability or efficacy of postsynaptic glutamate receptors. However, augmented quantal size might also reflect increases in neurotransmitter concentration within the synaptic cleft since AMPA-type glutamate receptors are not generally saturated during basal transmission. Here we report evidence that peak cleft glutamate concentration...
304.

Changes in the Expressional Levels of Sarcoplasmic Reticulum Ca2+-regulatory Proteins in the Postnatal Developing Rat Heart

EunHeeLee, SooSungPark, JaeSungLee, YoungJuSeo, Young-HoonKim, HaeWonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.2 6 101-108 (8 pages)

EunHeeLee, SooSungPark, JaeSungLee, YoungJuSeo, Young-HoonKim, HaeWonKim 저
...
- 3,000원
In the present study, the postnatal developmental changes in the expressional levels of cardiac sarcoplasmic reticulum (SR) Ca2⁢ regulatory proteins, i.e. Ca2⁢-ATPase, phospholamban, and Ca2⁢ release channel, were investigated. Both SR Ca2⁢-ATPase and phospholamban mRNA levels were about 35% of adult levels at birth and gradually increased to adult levels. Protein levels of both SR Ca2⁢-ATPase and phospholamban, which were measured by quantitative immunoblotting,...
305.

Noradrenergic Modulation of Spontaneous Inhibitory Postsynaptic Currents in the Hypothalamic Paraventricular Nucleus

LongHwaLee, WoneeChong, KihoLee, JinBongPark, PanDongRyu 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.2 2 71-80 (10 pages)

LongHwaLee, WoneeChong, KihoLee, JinBongPark, PanDongRyu 저
...
- 3,000원
(5.5⁑1.3 Hz) in the rest of type II neurons (p＜0.001). In both types of PVN neurons, NE did not affect the mean amplitude and decay time constant of sIPSCs. In addition, membrane input resistance and amplitude of sIPSC of type I neurons were larger than those of type II neurons tested (1209 vs. 736 MΩ, p＜0.001; 110 vs. 81 pS, p＜0.001). The results suggest that noradrenergic modulation of inhibitory synaptic transmission in the PVN decreases the neuronal excitability in most type I...
306.

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
The concentration of TFA for half-maximal activation and the Hill coefficient were 0.03 mM and 1.2, respectively. TFA did not affect the single channel conductance of KATP channels. Analysis of open and closed time distributions showed that TFA increased burst duration and decreased the interburst interval without changes in open and closed time distributions shorter than 5 ms. TFA diminished ATP sensitivity of KATP channels in a concentration-response relationship for ATP. Conclusions: TFA, a...
307.

Electrical Stimulation Can Facilitate Vestibular Compensation Following Unilateral Labyrinthectomy in Rats

ByungRimPark, JinOkKim, MinSunKim, MoonYoungLee, JaeHyoKim, Yuan-ZheJin, MyungAeChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 2 123-131 (9 pages)

ByungRimPark, JinOkKim, MinSunKim, MoonYoungLee, JaeHyoKim, Yuan-ZheJin, MyungAeChoi 저
...
- 3,000원
electrical stimulation was applied to the injured vestibular portion in Sprague-Dawley rats. Vestibuloocular and vestibulospinal reflexes, electrical activity and expression of c-Fos protein in medial vestibular nuclei (MVN) were measured with time following UL. Spontaneous nystagmus occurred with frequency of 2.9⁑0.2 beats/sec at 2 hours after UL and disappeared after 72 hours. Electrical stimulation decreased the frequency of nystagmus significantly till 24 hours after UL. Roll head...
308.

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...
309.

Myocardial Protection by Recombinant Soluble P-selectin Glycoprotein Ligand-1 Suppression of Neutrophil and Platelet Interaction Following Ischemia and Reperfusion

SangSooHam, YoonYoungJang, JinHoSong, HyangMiLee, KwangJoonKim, JunSikHong, YongKyooShin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.6 10 507-513 (7 pages)

SangSooHam, YoonYoungJang, JinHoSong, HyangMiLee, KwangJoonKim, JunSikHong, YongKyooShin 저
...
- 3,000원
Polymorphonuclear leukocytes (PMNs) play an important role in myocardial ischemia/reperfusion (MI/R) injury. Moreover, platelets are also important blood cells that can aggravate myocardial ischemic injury. This study was designed to test the effects of PMNs and platelets separately and together in provoking cardiac dysfunction in isolated perfused rat hearts following ischemia and reperfusion. Additional control rat hearts were perfused with 75⁓106 PMNs, with 75⁓106 platelets, or...
310.

Comparison of the Determinants in the Differences in Force- Frequency Relationships between Rat and Rabbit Left Atria

ChangMannKoSoon-JinKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.5 11 417-425 (9 pages)

ChangMannKoSoon-JinKim 저
...
- 3,000원
The underlying mechanism commonly applicable for both the positive and negative force-frequency relationships (FFR) was pursued in left atria (LA) of rat and rabbit. The species differences in the roles of Na⁢/Ca2⁢ exchanger and sarcoplasmic reticulum (SR), which are major intracellular Ca2⁢ regulatory mechanisms in the heart, were examined in the amplitude accommodation to the frequency that changed from 3 Hz to the variable test frequencies for 5 minutes in the electrically...

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