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961.

Effects of Dexamethasone and DHEA on the Changes of Glutamate and Polyamine Uptake in Rat Astrocytes by Lipopolysaccharide and Antimycin A

Sang-HyunChoi, BumLee, Kyung-HoShin, Bon-HongMin, Yeon-SookChun, Boe-GwunChun 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.2 3 137-146 (10 pages)

Sang-HyunChoi, BumLee, Kyung-HoShin, Bon-HongMin, Yeon-SookChun, Boe-GwunChun 저
...
- 3,000원
Interactions among dexamethasone, dehydroepiandrosterone (DHEA), lipopolysaccharide (LPS), and antimycin A on the glutamate uptake and the polyamine uptake were investigated in primary cultures of rat cerebral cortical astrocytes to examine the effects of dexamethasone and DHEA on the regulatory role of astrocytes in conditions of increased extracellular concentrations of glutamate or polyamines. 1. [3H]Glutamate uptake: LPS and antimycin A decreased Vmax, but both drugs had little effect on...
962.

Role of Phospholipase A2 in Hypoxia-Induced Renal Cell Injury

WonRakChoi, SunHeeKo, SuInCho, JaeSukWoo, JinSupJung, SangHoLee, YongKeunKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.1 12 93-100 (8 pages)

WonRakChoi, SunHeeKo, SuInCho, JaeSukWoo, JinSupJung, SangHoLee, YongKeunKim 저
...
- 3,000원
The present study was designed to assess the roles of PLA2 activation and arachidonic acid (AA) metabolites in hypoxia-induced renal cell injury. Hypoxia increased LDH release in a dose-dependent manner in rabbit renal cortical slices, and this increase was significant after 20-min hypoxia. The hypoxia-induced LDH release was prevented by amino acids, glycine and alanine, and extracellular acidosis (pH 6.0). Buffering intracellular Ca2⁢ by a chelator, but not omission of Ca2⁢ in the...
963.

Moderate Elevation of Extracellular K+ Concentration Induces Vasorelaxation in Isolated Rat, Rabbit and Human Cerebral Arteries Role of Na Pump and Ba-Sensitive Process

DongHoKim, SungJoonKim, SangJinLee, SungJinPark, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.6 7 705-714 (10 pages)

DongHoKim, SungJoonKim, SangJinLee, SungJinPark, KiWhanKim 저
...
- 3,000원
Cerebral blood vessels relax when extracellular K⁢ concentrations ([K⁢])e are elevated moderately (2∼15 mM, K⁢-induced vasorelaxation). We have therefore studied the underlying mechanism for this K⁢- induced vasorelaxation in the isolated middle cerebral arteries (MCAs). The effects of ouabain and Ba2⁢ on K⁢-induced vasorelaxation were examined to determine the role of sodium pump and/or Ba-sensitive process (possibly, inward rectifier K current) in the...
964.

Further Characterization of Bombesin Like Immunoreactivities from the Skin of Korean Fire-bellied Toad, Bombina orientalis

HyeokYilKwon, HyungSeoPark, MooHoWon, YunLyulLee, HyoungJinPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.5 12 637-644 (8 pages)

HyeokYilKwon, HyungSeoPark, MooHoWon, YunLyulLee, HyoungJinPark 저
...
- 3,000원
and C18 reverse phase HPLC. The purified BLI-K3 and K4 showed high binding affinity to an anti-bombesin serum (LBE 2G-2) with binding potency of 72 and 95%, respectively, relative to that of bombesin. However, they did not possess any distinctive biological activity of bombesin like peptide. On the contrary, the biological activity of BLI-K5 was similar to that of bombesin but its binding affinity to an anti-bombesin serum was low. The results indicate that three heterogeneous forms of BLI were...
965.

Effect of the Inhibition of PLA2 on Oxidative Lung Injury Induced by Interleukin-1㄁

YoungManLee, HyunGugCho, Yoon-YubPark, Jong-KiKim, YoonJeongLee, Won-HarkPark, TeoanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 12 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.5 10 617-628 (12 pages)

YoungManLee, HyunGugCho, Yoon-YubPark, Jong-KiKim, YoonJeongLee, Won-HarkPark, TeoanKim 저
...
- 4,100원
a PLA2 inhibitor, did not change the levels of these cytokines. Although IL-1 increased PLA2 activity time-dependently, mepacrine inhibited the activity almost completely. Activation of PLA2 elevated leukotriene C4 and B4 (LTC4 and LTB4), and 6-keto-prostaglandin F2㄁ (6-keto-PGF2㄁) was consumed completely by respiratory burst induced by IL-1. Mepacrine did not alter these changes in the contents of lipid mediators. To estimate the functional changes of alveolar barrier during the...
966.

Role of Phospholipase A2 in Oxidant-induced Alteration in Phosphate Transport in Primary Cultured Rabbit Renal Proximal Tubule Cells

KwonMooPark, SunHeeKo, JaeSukWoo, JinSupJung, SangHoLee, YongKeunKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.5 8 601-609 (9 pages)

KwonMooPark, SunHeeKo, JaeSukWoo, JinSupJung, SangHoLee, YongKeunKim 저
...
- 3,000원
viability induced by tBHP. tBHP-induced inhibition of phosphate transport was not affected by a PKC inhibitor, staurosporine. tBHP at 0.1 mM did not produce the inhibition of Na⁢-K⁢-ATPase activity in microsomal fraction, although it significantly inhibited at 1.0 mM. These results suggest that tBHP can inhibit phosphate uptake through a mechanism independent of PLA2 activation, irreversible cell injury, and lipid peroxidation in primary cultured rabbit renal proximal tubular cells.
967.

Cytoprotective Effects of Dihydrolipoic Acid and Lipoic Acid on the Oxidative Stress in Cultured Rat Cortical Neurons

Won-KiKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.4 4 427-433 (7 pages)

Won-KiKim 저
...
- 3,000원
a marked production of reactive oxygen species (ROS) occur in neuronal and non-neuronal cells. The present study investigated the effect of the biological antioxidants dihydrolipoic acid (DHLA) and lipoic acid (LA) on N-methyl-D-aspartate (NMDA)- and ROS-induced neurotoxicity in cultured rat cortical neurons. DHLA enhanced NMDA-evoked rises in intracellular calcium concentration ([Ca2⁢]i). In contrast, LA did not alter the NMDA-evoked calcium responses but decreased after a brief treatment...
968.

Molecular Pharmacological Interaction of Phenylbutazone to Human Neutrophil Elastase

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.3 14 385-393 (9 pages)

KooilKang 저
...
- 3,000원
form a strong interaction. Phenylbutazone may form a binding, similar to a key & lock system to the atoms carrying opposite charges near the active site of the enzyme molecule. Furthermore, the hydrophobicity of the surrounding amino acid near the active site seemed to enhance the binding strength of phenylbutazone. Binding of phenylbutazone near the active site may cause masking of the active site, preventing the substrate from approaching the active site and inhibiting elastase activity.
969.

Tetrachloroauric Acid Depresses the Activation Processes of Phagocytic Cells

ChungSooLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.3 13 377-384 (8 pages)

ChungSooLee 저
...
- 3,000원
Gold compounds depress phagocytic cell responses, including chemotaxis, and respiratory burst. However, the effects of gold compounds on the function of phagocytic cells are variable according to the preparation of medicine. In this study, effect of tetrachloroauric acid on activated neutrophil responses, including respiratory burst, lysosomal enzyme release and change of intracellular Ca2+ level and on the synthesis of interleukin-8 and granulocyte-macrophage colony stimulating factor by...
970.

Inhibitory Effect of Caffeine on Carbachol-Induced Nonselective Cationic Current in Guinea-Pig Gastric Myocytes

SungJoonKim, KyungWanMin, YoungChulKim, SangJinLee, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.3 10 353-359 (7 pages)

SungJoonKim, KyungWanMin, YoungChulKim, SangJinLee, InsukSo, KiWhanKim 저
...
- 3,000원
In gastrointestinal smooth muscle, muscarinic stimulation by carbachol (CCh) activates nonselective cation channel current (ICCh) which is facilitated by intracellular [Ca2⁢] increase. Caffeine is widely used in experiments to mobilize Ca2⁢ from intracellular stores. This study shows a strong inhibitory effect of caffeine on ICCh in guinea-pig gastric myocyte. In this study, the underlying mechanism of the inhibitory effect of caffeine was investigated. ICCh was completely...

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