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911.

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...
912.

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,...
913.

Increase of Intracellular Ca2+ Concentration Induced by Lysophosphatidylcholine in Murine Aortic Endothelial Cells

MeiHongZhu, SungJinPark, HyunJinKim, DongKiYang, SukHyoSuh, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.2 5 93-100 (8 pages)

MeiHongZhu, SungJinPark, HyunJinKim, DongKiYang, SukHyoSuh, InsukSo, KiWhanKim 저
...
- 3,000원
Effects of oxidized low-density lipoprotein (ox-LDL), l-α-stearoyl-lysophosphatidylcholine (LPC), on intracellular Ca2⁢ concentration were examined in mouse endothelial cells by measuring intracellular Ca2⁢ concentration ([Ca2⁢]i) with fura 2-AM and reverse transcription-polymerase chain reaction (RT-PCR). LPC increased [Ca2⁢]i under the condition of 1.5 mM [Ca2⁢]o but did not show any effect under the nominally Ca2⁢-free condition. Even after the store...
914.

Effect of Ca2+-channel Blockers on Norepinephrine Release in the Rat Hippocampal Slice and Synaptosome

SukWonKim, KyuYongJung, BongKyuChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.2 4 87-92 (6 pages)

SukWonKim, KyuYongJung, BongKyuChoi 저
...
- 3,000원
The aim of this study was to investigate the role of Ca2⁢-channel blockers in norepinephrine (NE) release from rat hippocampus. Slices and synaptosomes were incubated with [3H]-NE and the releases of the labelled products were evoked by 25 mM KCl stimulation. Nifedipine, diltiazem, nicardipine, flunarizine and pimozide did not affect the evoked and basal release of NE in the slice. But, diltiazem, nicardipine and flunarizine decreased the evoked NE release with a dose-related manner...
915.

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
Previous studies have suggested that brain stem noradrenergic inputs differentially modulate neurons in the paraventricular nucleus (PVN). Here, we compared the effects of norepinephrine (NE) on spontaneous GABAergic inhibitory postsynaptic currents (sIPSCs) in identified PVN neurons using slice patch technique. In 17 of 18 type I neurons, NE (30∼100μM) reversibly decreased sIPSC frequency to 41⁑7% of the baseline value (4.4⁑0.8 Hz, p＜0.001). This effect was blocked by yohimbine...
916.

Altered Electrophysiological Properties of Coronary Artery in Isoprenaline-Induced Cardiac Hypertrophy

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.5 7 413-421 (9 pages)

NariKim, JinHan, EuiyongKim 저
...
- 3,000원
arterial SMCs underwent significant changes in ultrastructure. The unitary current amplitude and the open-state probability of KCa channel were significantly reduced in hypertrophy without open-time and closed-time kinetic. The concentration-response curve of KCa channel to Ca2⁢ is shifted to the right in hypertrophy. The reduction in the mean single channel current and increase in the open channel noise of KCa channel by TEA were more sensitive in hypertrophy. Kdr current density is...
917.

Lipopolysaccharide Inhibits Proliferation of the Cultured Vascular Smooth Muscle Cells by Stimulating Inducible Nitric Oxide Synthase and Subsequent Activation of Guanylate Cyclase

HyoungChulChoi, SangGonLee, JongHoKim, JooYoungKim, UyDongSohn, JeoungHeeHa, KwangYounLee, WonJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.4 7 343-351 (9 pages)

HyoungChulChoi, SangGonLee, JongHoKim, JooYoungKim, UyDongSohn, JeoungHeeHa, KwangYounLee, WonJoonKim 저
...
- 3,000원
This study was undertaken to investigate the mechanism of lipopolysaccharide (LPS) and nitric oxide (NO) as a regulator of vascular smooth muscle cell (VSMC) proliferation. VSMC was primarily cultured from rat aorta and confirmed by the immunocytochemistry with anti-smooth muscle myosin antibody. The number of viable VSMCs were counted, and lactate dehydrogenase (LDH) activity was measured to assess the degree of cell death. Concentrations of nitrite in the culture medium were measured as an...
918.

The Protective Effect of Melatonin Administration against Adriamycin-induced Cardiotoxicity in Rats

JinHan, ChungheeKim, NariKim, JuheePark, YoungchurlYang, EuiyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.4 6 333-342 (10 pages)

JinHan, ChungheeKim, NariKim, JuheePark, YoungchurlYang, EuiyongKim 저
...
- 3,000원
a lethality rate of 86%, with melatonin (10 mg/kg s.c. for 6 days) treatment reducing the adriamycin-induced lethality rate to 20%. The severe body weight loss caused by adriamycin was also significantly attenuated by melatonin treatment. Treatment of melatonin marked reduced adriamycin-induced the levels of MDA formation and LDH release. A cell damage indicated by the loss of myofibrils, swelling of the mitochondria as well as cytoplasmic vacuolization was seen in adriamycin-treated group....
919.

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
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 metabolite of isoflurane, enhanced KATP channel activity in a concentration-dependent fashion. These results imply that TFA could mediate isoflurane-induced cardioprotection via KATP channel activation during myocardial ischemia and reperfusion.
920.

The Alteration of Ca2+-activated K+ Channels in Coronary Arterial Smooth Muscle Cells Isolated from Isoproterenol-induced Cardiac Hypertrophy in Rabbit

NariKim, JinHan, EuiyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 5 147-156 (10 pages)

NariKim, JinHan, EuiyongKim 저
...
- 3,000원
It has been proposed that Ca2⁢-activated K⁢ (KCa) channels play an essential role in vascular tone. The alterations of the properties of coronary KCa channels have not been studied as a possible mechanism for impaired coronary reserve in cardiac hypertrophy. The present studies were carried out to determine the properties of coronary KCa channels in normal and hypertrophied hearts. These channels were measured from rabbit coronary smooth muscle cells using a patch clamp technique....

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