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41.

Electrophysiological Characterization of AMPA and NMDA Receptors in Rat Dorsal Striatum

SeungHyunJeun, HyeongSeokCho, KiJungKim, QingZhongLi, Ki-WugSung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 11 209-214 (6 pages)

SeungHyunJeun, HyeongSeokCho, KiJungKim, QingZhongLi, Ki-WugSung 저
...
- 3,000원
of EPSCs between ＋50 and −50 mV. NMDA/AMPA ratio was 0.20±0.05, AMPA receptor ratio of GluR2-lacking/GluR2- containing subunit was 0.26±0.05 and NMDA receptor ratio of NR2B/NR2A subunit was 0.32±0.03. The rectification index (control 2.39±0.27) was decreased in the presence of both APV and combination of APV and IEM-1460 (1.02±0.11 and 0.93±0.09, respectively). These results suggest that the major components of the striatal glutamate receptors are GluR2-containing AMPA receptors and...
42.

Flavone Attenuates Vascular Contractions by Inhibiting RhoA/Rho Kinase Pathway

InjiBaek, SuBunJeon, Min-JiSong, EnyueYang, UyDongSohn, InKyeomKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 10 201-207 (7 pages)

InjiBaek, SuBunJeon, Min-JiSong, EnyueYang, UyDongSohn, InKyeomKim 저
...
- 3,000원
Our previous study demonstrated that flavone inhibits vascular contractions by decreasing the phosphorylation levelof the myosin phosphatase target subunit (MYPT1). In the present study, we hypothesized that flavone attenuates vascular contractions through the inhibition of the RhoA/Rho kinase pathway. Rat aortic rings were denuded of endothelium, mounted in organ baths, and contracted with either 30 nM U46619 (a thromboxane A2 analogue) or 8.0 mM NaF 30 min after pretreatment with either...
43.

Forskolin Changes the Relationship between Cytosolic Ca2＋ and Contraction in Guinea Pig Ileum

KoonHeeHan, GapJinCheon, DongSooYeon, SeongChunKwon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 8 189-194 (6 pages)

KoonHeeHan, GapJinCheon, DongSooYeon, SeongChunKwon 저
...
- 3,000원
This study was designed to clarify the mechanism of the inhibitory effect of forskolin on contraction, cytosolic Ca2＋ level ([Ca2＋]i), and Ca2＋ sensitivity in guinea pig ileum. Forskolin (0.1 nM∼10ՌM) inhibited high K＋ (25 mM and 40 mM)- or histamine (3ՌM)-evoked contractions in a concentration- dependent manner. Histamine-evoked contractions were more sensitive to forskolin than high K＋- evoked contractions. Spontaneous changes in [Ca2＋]i and contractions were inhibited by...
44.

Eugenol Inhibits ATP-induced P2X Currents in Trigeminal Ganglion Neurons

HaiYingLi, ByungKyLee, JoongSooKim, SungJunJung, SeogBaeOh 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.6 5 315-322 (8 pages)

HaiYingLi, ByungKyLee, JoongSooKim, SungJunJung, SeogBaeOh 저
...
- 3,000원
Eugenol is widely used in dentistry to relieve pain. We have recently demonstrated voltage-gated Na＋ and Ca2＋ channels as molecular targets for its analgesic effects, and hypothesized that eugenol acts on P2X3, another pain receptor expressed in trigeminal ganglion (TG), and tested the effects of eugenol by whole-cell patch clamp and Ca2＋ imaging techniques. In the present study, we investigated whether eugenol would modulate 5'-triphosphate (ATP)-induced currents in rat TG neurons and...
45.

Acidic pH-activated Cl? Current and Intracellular Ca2＋ Response in Human Keratinocytes

SuJungPark, WonWooChoi, OhSangKwon, JinHoChung, HeeChulEun, YungEEarm, SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.4 8 177-184 (8 pages)

SuJungPark, WonWooChoi, OhSangKwon, JinHoChung, HeeChulEun, YungEEarm, SungJoonKim 저
...
- 3,000원
to pHe by raising temperature from 24oC to 37oC. HaCaT cells also expressed Ca2＋-activated Cl− current (ICl,Ca), and the amplitude of ICl,Ca was increased by relatively weak acidic pHe (7.0 and 6.8). Interestingly, the acidic pHe (5.0) also induced a sharp increase in the intracellular [Ca2＋] (⁘[Ca2＋]acid) of HaCaT cells. The ⁘[Ca2＋]acid was independent of extracellular Ca2＋, and was abolished by the pretreatment with PLC inhibitor, U73122. In primary human keratinocytes,...
46.

Effects of Apigenin on Glutamate-induced [Ca2+]i Increases in Cultured Rat Hippocampal Neurons

Ji-HwaHan, KiJungKim, Hyun-JongJang, JuHoJang, Myung-JunKim, KiWugSung, Duck-JooRhie, Yang-HyeokJo, SangJuneHahn, Mun-YongLee, ShinHeeYoon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.2 2 43-50 (8 pages)

Ji-HwaHan, KiJungKim, Hyun-JongJang, JuHoJang, Myung-JunKim, KiWugSung, Duck-JooRhie, Yang-HyeokJo, SangJuneHahn, Mun-YongLee, ShinHeeYoon 저
...
- 3,000원
decreased the [Ca2+]i responses induced by the metabotropic glutamate receptor agonist, (S)-3,5-dihydroxy</SUB>phenylglycine (DHPG, 100ՌM, 90 s), and inhibited the caffeine (10 mM, 2 min)-induced [Ca2+]i responses. Furthermore, treatment with apigenin (30ՌM) significantly inhibited the amplitude and frequency of 0.1 mM [Mg2+]o-induced [Ca2+]i spikes. These data together suggest that apigenin inhibits glutamate-induced calcium signaling in cultured rat hippocampal neurons.
47.

Inhibition of the Desensitization of Canonical Transient Receptor Potential Channel 5 by Dimethyl Sulfoxide

ByungJooKim, InsukSo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.5 10 227-231 (5 pages)

ByungJooKim, InsukSo 저
...
- 1,500원
declined to 6±1% of the initial peak amplitude 60 sec after CCh application and to 1±0.5% after 120 sec. But, in the presence of 0.01%, 0.1% and 1% DMSO, TRPC5 current spontaneously declined to 55±2%, 68±1% and 100±0.2% of the initial peak amplitude 60 sec after CCh application and to 38±2%, 61±1% and 100±1% after 120 sec, respectively. The results suggest that DMSO can internally attenuate the desensitization of TRPC5 current through unknown mechanisms that remain to be elucidated.
48.

NMDA Receptor-dependent Inhibition of Synaptic Transmission by Acute Ethanol Treatment in Rat Corticostriatal Slices

SeJoonChoi, KiJungKim, HyeongSeokCho, SeongYunKim, Dong-SeokYim, Young-JinCho, SangJuneHahn, Ki-WugSung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.6 2 303-308 (6 pages)

SeJoonChoi, KiJungKim, HyeongSeokCho, SeongYunKim, Dong-SeokYim, Young-JinCho, SangJuneHahn, Ki-WugSung 저
...
- 3,000원
The effects of ethanol on corticostriatal synaptic transmission were examined, using extracellular recording and analysis of population spike amplitudes in rat brain slices, to study how acute ethanol intoxication impairs striatal function. Ethanol caused a decrease in population spike amplitudes in a dose dependent manner (50∼200 mM). Pretreatment with picrotoxin, a γ-amino butyric acid (GABA)A receptor antagonist, increased the population spikes but ethanol (100 mM) was still effective in...
49.

Lysophosphatidylcholine Attenuates Endothelium-dependent Relaxation Responses through Inhibition of ACh-induced Endothelial [Ca2+]i Increase

Seong-ChunKwon, Yong-HoLee, TaicksangNam, Duck-SunAhn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.1 5 25-30 (6 pages)

Seong-ChunKwon, Yong-HoLee, TaicksangNam, Duck-SunAhn 저
...
- 3,000원
of L-NAME (0.1 mM), ACh increased [Ca2⁢]i without affecting the amplitude of high K⁢-induced tension. These ACh-induced change of [Ca2⁢]i and tension was abolished by removal of endothelium or 10 nM 4-DAMP (muscarinic receptor antagonist) pretreatment. Pretreatment of LPC (10μM) inhibited ACh (10μM)-induced change of tension and [Ca2⁢]i in endothelium-intact carotid artery. On the other hand, LPC had no effect on ACh-induced change of tension and [Ca2⁢]i in...
50.

Dopamine Modulates Corticostriatal Synaptic Transmission through Both D1 and D2 Receptor Subtypes in Rat Brain

HyunHoLee, SeJoonChoi, Ki-JungKim, HyeongSeokCho, SeongYunKim, Ki-WugSung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.5 2 263-268 (6 pages)

HyunHoLee, SeJoonChoi, Ki-JungKim, HyeongSeokCho, SeongYunKim, Ki-WugSung 저
...
- 3,000원
Striatum has important roles in motor control, habitual learning and memory. It receives glutamatergic inputs from neocortex and thalamus, and dopaminergic inputs from substantia nigra. We examined effects of dopamine (DA) on the corticostriatal synaptic transmission using in vitro extracellular recording technique in rat brain corticostriatal slices. Synaptic responses were elicited by stimulation of cortical glutamatergic inputs on the corpus callosum and recorded in the dorsal striatum....

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