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381.

Modulation of Inwardly Rectifying K+ Channel by Intracellular and Extracellular pH in Bovine Aortic Endothelial Cells

Kyu-SangPark, InDeokKong, JoongWooLee, HyewhonRhim, YoungChulKim, InsukSo, KiWhanKim, 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.5 4 255-260 (6 pages)

Kyu-SangPark, InDeokKong, JoongWooLee, HyewhonRhim, YoungChulKim, InsukSo, KiWhanKim, 저
...
- 3,000원
was attenuated by the Na-acetate (30 mM)-induced intracellular acidification. The changes in extracellular pH also closely modulated the amplitude of IRK current, which was decreased to 40.2⁑1.3% of control upon switching the extracellular pH to 4.0 from 7.4. The extracellular pH value for half-maximal inhibition (pK) of IRK current was 5.11. These results demonstrate that the activity of IRK channel in BAECs, probably Kir2.1, was suppressed by proton at both sides of plasma membrane.
382.

Identification of ATP-sensitive K+ Conductances in Male Rat Major Pelvic Ganglion Neurons

Kyu-SangPark, Seung-KyuCha, Keon-IlLee, JaeYeoulJun, Seong-WooJeong, InDeokKong, JoongWooLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.5 3 247-254 (8 pages)

Kyu-SangPark, Seung-KyuCha, Keon-IlLee, JaeYeoulJun, Seong-WooJeong, InDeokKong, JoongWooLee 저
...
- 3,000원
Major pelvic ganglia (MPG) neurons are classified into sympathetic and parasympathetic neurons according to the electrophysiological properties; membrane capacitance (Cm), expression of T-type Ca2⁢ channels, and the firing patterns during depolarization. In the present study, function and molecular expression of ATP-sensitive K⁢ (KATP) channels was investigated in MPG neurons of male rats. Only in parasympathetic MPG neurons showing phasic firing patterns, hyperpolarizing changes...
383.

Involvement of NMDA Receptor and L-type Calcium Channel in the Excitatory Action of Morphine

BonSeopKoo, HongKeeShin, SukHanKang, JongHunJun 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.5 2 241-246 (6 pages)

BonSeopKoo, HongKeeShin, SukHanKang, JongHunJun 저
...
- 3,000원
We studied the excitatory action of morphine on the responses of dorsal horn neuron to iontophoretic application of excitatory amino acid and C-fiber stimulation by using the in vivo electrophysiological technique in the rat. In 137 of the 232 wide dynamic range (WDR) neurons tested, iontophoretic application of morphine enhanced the WDR neuron responses to N-methyl-D-aspartate (NMDA), kainate, and graded electrical stimulation of C-fibers. Morphine did not have any excitatory effects on the...
384.

Effect of Doxorubicin on Catecholamine Release in the Isolated Perfused Rat Adrenal Gland

Dong-YoonLim, Song-HoonOh, Yoo-SeungSeoh, Eun-SookLee, Il-HwanKim, Seong-HoJo, Soon-PyoHong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.4 7 215-224 (10 pages)

Dong-YoonLim, Song-HoonOh, Yoo-SeungSeoh, Eun-SookLee, Il-HwanKim, Seong-HoJo, Soon-PyoHong 저
...
- 3,000원
The present study was undertaken to investigate the effect of doxorubicin (DX) on secretion of catecholamines (CA) evoked by ACh, high K⁢, DMPP and McN-A-343 from the isolated perfused rat adrenal gland and to establish the mechanism of its action. DX (10⁣7∼10⁣6 M) perfused into an adrenal vein for 60 min produced relatively dose- and time-dependent inhibition of CA secretory responses evoked by ACh (5.32⁓10⁣3 M), DMPP (10⁣4 M) and McN-A-343 (10⁣4 M)....
385.

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
The present study was designed to clarify whether tacrine affects the release of catecholamines (CA) from the isolated perfused model of rat adrenal gland or not and to elucidate the mechanism of its action. Tacrine (3⁓10⁣5∼3⁓10⁣4 M) perfused into an adrenal vein for 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,...
386.

Responses of Inferior Olive Neurons to Stimulation of Semicircular Canals

Sah-HoonPark, JongSeongPark, MinSuLee, JungWooShin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.4 4 193-198 (6 pages)

Sah-HoonPark, JongSeongPark, MinSuLee, JungWooShin 저
...
- 3,000원
In spite of abundant anatomical evidences for the fiber connection between vestibular nuclei and inferior olivary (IO) complex, the transmission of vestibular information through the vestibulo- olivo-cerebellar climbing fiber pathway has not been physiologically established. The aims of the present study were to investigate whether there are IO neurons specifically responding to horizontal rotation and also in which subregions of IO complex these vestibularly-activated neurons are located. The...
387.

Molecular Mechanism of Pancreatic Bicarbonate Secretion

MinGooLee, JeWooKim, KyungHwanKim, ShmuelMuallem 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.3 1 131-138 (8 pages)

MinGooLee, JeWooKim, KyungHwanKim, ShmuelMuallem 저
...
- 3,000원
to search for the basic molecular and cellular processes that mediate and control HCO3⁣ and fluid secretion by the pancreatic duct. The coordinated action of various transporters on the luminal and basolateral membranes of polarized epithelial cells mediates the transepithelial HCO3⁣ transport, which involves HCO3⁣ absorption in the resting state and HCO3⁣ secretion in the stimulated state. The overall process of HCO3⁣ secretion can be divided into two steps. First,...
388.

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...
389.

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,...
390.

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...

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