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931.

Effects of Pharmacological Modulators of Ca2+-activated K+ Channels on Proliferation of Human Dermal Fibroblast

JihyunYun, TaehoKim, SoonchulMyung, HyoweonBang, InjaLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.2 6 95-100 (6 pages)

JihyunYun, TaehoKim, SoonchulMyung, HyoweonBang, InjaLim 저
...
- 3,000원
a specific large-conductance Ca2⁢-activated K⁢ (BK) channel activator, but decreased by iberiotoxin (IBTX), a specific BK channel inhibitor. To investigate the presence of an intermediate-conductance Ca2⁢-activated K⁢ (IK) channels, we pretreated the fibroblasts with low dose of TEA to block BK currents, and added 1-EBIO (an IK activator). 1-EBIO recovered the currents inhibited by TEA. When various Ca2⁢-activated K⁢ channel modulators were added into culture...
932.

Effects of Zinc on Spontaneous Miniature GABA Release in Rat Hippocampal CA3 Pyramidal Neurons

Byung-JuChoi, Il-SungJang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.2 1 59-64 (6 pages)

Byung-JuChoi, Il-SungJang 저
...
- 3,000원
The effects of Zn2⁢ on spontaneous glutamate and GABA release were tested in mechanically dissociated rat CA3 pyramidal neurons which retained functional presynaptic nerve terminals. The spontaneous miniature excitatory and inhibitory postsynaptic currents (mEPSCs and mIPSCs, respectively) were pharmacologically isolated and recorded using whole-cell patch clamp technique under voltage-clamp conditions. Zn2⁢ at a lower concentration (30μM) increased GABAergic mIPSC frequency without...
933.

Promoting Effect of Hydrogen Peroxide on 1-Methyl-4-phenylpyridinium-induced Mitochondrial Dysfunction and Cell Death in PC12 Cells

DongHeeLee, ChungSooLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.1 9 51-57 (7 pages)

DongHeeLee, ChungSooLee 저
...
- 3,000원
The promoting effect of hydrogen peroxide (H2O2) against the cytotoxicity of 1-methyl-4-phenylpyridinium (MPP⁢) in differentiated PC12 cells was assessed by measuring the effect on the mitochondrial membrane permeability. Treatment of PC12 cells with MPP⁢ resulted in the nuclear damage, decrease in the mitochondrial transmembrane potential, cytosolic accumulation of cytochrome c, activation of caspase-3, increase in the formation of reactive oxygen species (ROS) and depletion of GSH....
934.

Calcium Ion Dynamics after Dexamethasone Treatment in Organotypic Cultured Hippocampal Slice

Hee-JungChae, Tong-HoKang, Ji-HoPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.6 8 363-370 (8 pages)

Hee-JungChae, Tong-HoKang, Ji-HoPark 저
...
- 3,000원
It is imperative to analyse brain injuries directly in real time, so as to find effective therapeutic compounds to protect brain injuries by stress. We established a system which could elucidate the real time Ca2⁢ dynamics in an organotypic cultured hippocampal slice by the insults of artificial stress hormone, dexamethasone. The real time Ca2⁢ dynamics could continuously be detected in cornus ammonis 3 (CA3) of the organotypic hippocampus for 8 hours under confocal microscopy. When...
935.

PKA-Mediated Regulation of B/K Gene Transcription in PC12 Cells

Mi-HyunChoi, Ho-ShikKim, Sung-HoChoi, Mi-YoungKim, Yoon-SeongJang, Young-MinJang, Jeong-HwaLee, Seong-WhanJeong, In-KyungKim, Oh-JooKwon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.6 4 333-340 (8 pages)

Mi-HyunChoi, Ho-ShikKim, Sung-HoChoi, Mi-YoungKim, Yoon-SeongJang, Young-MinJang, Jeong-HwaLee, Seong-WhanJeong, In-KyungKim, Oh-JooKwon 저
...
- 3,000원
examined the specific signaling pathway that regulates the transcription of B/K in PC12 cells. When the cells were treated with forskolin (50μM), B/K mRNA and protein levels were time-dependently decreased, reaching the lowest level at 3 or 4 hr, and thereafter returning to the control level. Chemicals such as dibutyryl-cAMP, cell- permeable cyclic AMP (cAMP) analogue and CGS21680, adenosine receptor A2A agonist, also repressed the B/K transcription. However, 1,9-dideoxyforskolin did not show...
936.

Regulation of Vacuolar H+-ATPase c Gene Expression by Oxidative Stress

Whan-JongKwak, Seong-MookKim, Min-SungKim, Jung-HoonKang, Dong-JinKim, Ho-ShikKim, Oh-JooKown, In-KyungKim, Seong-WhanJeong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.5 4 275-282 (8 pages)

Whan-JongKwak, Seong-MookKim, Min-SungKim, Jung-HoonKang, Dong-JinKim, Ho-ShikKim, Oh-JooKown, In-KyungKim, Seong-WhanJeong 저
...
- 3,000원
By using differential display, we identified one of the genes encoding the multi-subunit complex protein V-ATPase, c subunit gene (ATP6L), and showed alterations of the gene expression by oxidative stresses. Expression of the ATP6L gene in Neuro-2A cells was increased by the treatment with H2O2 and incubation in hypoxic chamber, implying that the expression of the ATP6L gene is regulated by oxidative stresses. To examine mechanisms involved in the regulation of the gene expression by oxidative...
937.

Differential Inhibition of MPP+- or 6-Hydroxydopamine-induced Cell Viability Loss in PC12 Cells by Trifluoperazine and W-7

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.4 9 247-252 (6 pages)

ChungSooLee 저
...
- 3,000원
and W-7 (a specific calmodulin antagonist) significantly attenuated the MPP⁢- induced cell viability loss in PC12 cells with a maximum inhibition at 0.5∼1μM; beyond these concentrations the inhibitory effect declined. Both compounds at this concentration range did not cause cell death significantly. In contrast to MPP⁢, the trifluoperazine and W-7 did not depress the cytotoxic effect of 6-OHDA. Addition of trifluoperazine and W-7 inhibited the cytosolic accumulation of cytochrome c...
938.

Inhibition of Hypoxia-induced Apoptosis in PC12 Cells by Estradiol

JiYeonJung, KwangHoonRoh, YeonJinJeong, SunHunKim, EunJuLee, MinSeokKim, WonMannOh, HeeKyunOh, WonJaeKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.4 7 231-238 (8 pages)

JiYeonJung, KwangHoonRoh, YeonJinJeong, SunHunKim, EunJuLee, MinSeokKim, WonMannOh, HeeKyunOh, WonJaeKim 저
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- 3,000원
Neuronal apoptotic events, which result in cell death, are occurred in hypoxic/ischemic conditions. Estradiol is a female sex hormone with steroid structure known to provide neuroprotection through multiple mechanisms in the central nervous system. This study was aimed to investigate the signal transduction pathway of CoCl2-induced neuronal cell death and the inhibitory effects of estradiol. Administration of CoCl2 decreased cell viability in both a dose- and time-dependent manner in PC12 cells....
939.

Naltrexone Inhibits Catecholamine Secretion Evoked by Nicotinic Receptor Stimulation in the Perfused Rat Adrenal Medulla

Byung-SikYu, Seon-YoungMin, Yoo-SeokSeo, Cheol-HeeChoi, Eun-HwaLee, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.4 6 223-230 (8 pages)

Byung-SikYu, Seon-YoungMin, Yoo-SeokSeo, Cheol-HeeChoi, Eun-HwaLee, Dong-YoonLim 저
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- 3,000원
The purpose of the present study was to examine the effect of naltrexone, an opioid antagonist, on secretion of catecholamines (CA) evoked by cholinergic nicotinic stimulation and membrane-depolarization from the isolated perfused rat adrenal gland and to establish the mechanism of its action. Naltrexone (3⁓10⁣6 M) perfused into an adrenal vein for 60 min produced time-dependent inhibition in CA secretory responses evoked by ACh (5.32⁓10⁣3 M), high K⁢...
940.

Inhibition of Sarcoplasmic Reticulum Ca2+ Uptake by Pyruvate and Fatty Acid in H9c2 Cardiomyocytes: Implications for Diabetic Cardiomyopathy

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.4 2 195-202 (8 pages)

EunHeeLee, HyeKyungLee, HaeWonKim, Young-HoonKim 저
...
- 3,000원
High extracellular glucose concentration was reported to suppress intracellular Ca2⁢ clearing through altered sarcoplasmic reticulum (SR) function. In the present study, we attempted to elucidate the effects of pyruvate and fatty acid on SR function and reveal the mechanistic link with glucose-induced SR dysfunction. For this purpose, SR Ca2⁢-uptake rate was measured in digitonin-permeabilized H9c2 cardiomyocytes cultured in various conditions. Exposure of these cells to 5 mM...

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