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171.

Comparative Effects on Secretion of LH, FSH, Prolactin, and Testosterone by Chronic and Direct Hypothalamic Administration of Nonylphenol to Adult Male Rats

Kun-SukPark, Won-CheoulJang, Mee-KyungKim, Hyung-GunKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.2 12 215-222 (8 pages)

Kun-SukPark, Won-CheoulJang, Mee-KyungKim, Hyung-GunKim 저
...
- 3,000원
Nonylphenol (NP) is a widespread environmental pollutant that has been shown to exert both toxic and estrogenic effects on mammalian cells. As the effects of NP on the reproductive system of adult male vertebrates are virtually unknown, we investigated not only the changes of reproductive hormone secretion in serum after chronic exposure to NP but also, in order to identify the site of its action, the reproductive hormone secretion in serum 48 hours after microinfusion of NP within hypothalamic...
172.

Acute Pulmonary Responses in Vivo to Silica Complexed with H+, Zn2+, or Fe3+

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.2 8 183-189 (7 pages)

JiheeLee 저
...
- 3,000원
This investigation is to determine whether the surface complexation of iron influence acute pulmonary responses induced by silica. For this study, three varieties of cation complexed silica were used: silica-H⁢, -Zn2⁢, and -Fe3⁢, since the first two are not active in the transport of electrons and generate little free radicals relative to the dust with the surface iron. Rats (270 to 280 g) were intratracheally (IT) instilled with saline, silica-H⁢, -Zn2⁢, or...
173.

The Effects of Sera from Amyotrophic Lateral Sclerosis Patients on Neuromuscular Transmission and Calcium Channels in Mice

HaiDunYan, JimokKim, SungJunJung, JunKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 17 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.1 13 101-117 (17 pages)

HaiDunYan, JimokKim, SungJunJung, JunKim 저
...
- 4,600원
Amyotrophic lateral sclerosis (ALS) is a degenerative neuromuscular disease of unknown etiology in which the upper and lower motor neurons are progressively destroyed. Recent evidences support the role of autoimmune mechanisms in the pathogenesis of ALS. This study investigated the effects of sera from ALS patients on neuromuscular transmission in phrenic nerve-hemidiaphragm preparations and on calcium currents of single isolated dorsal root ganglion (DRG) cells in mice. Mice were injected with...
174.

Regulation of Magnesium Release by cAMP during Chemical Hypoxia in the Rat Heart and Isolated Ventricular Myocytes

JinShangKimAntonioScarpa 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.1 8 59-68 (10 pages)

JinShangKimAntonioScarpa 저
...
- 3,000원
Chemically induced hypoxia has been shown to induce a depletion of ATP. Since intracellular free Mg2⁢ ([Mg2⁢]i) appears to be tightly regulated following cellular energy depletion, we hypothesized that the increase in [Mg2⁢]i would result in Mg2⁢ extrusion following hormonal stimulation. To determine the relation between Mg2⁢ efflux and cellular energy state in a hypoxic rat heart and isolated myocytes, [Mg2⁢]i, ATP and Mg2⁢ content were measured by...
175.

Role of Protein Kinases on NF-κB Activation and Cell Death in Bovine Cerebral Endothelial Cells

YoungSooAhn, ChulHoonKim, JooHeeKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.1 2 11-18 (8 pages)

YoungSooAhn, ChulHoonKim, JooHeeKim 저
...
- 3,000원
Nuclear factor κB (NF-κB) activation is modulated by various protein kinases. Activation of NF-κB is known to be important in the regulation of cell viability. The present study investigated the effect of inhibitors of protein tyrosine kinase (PTK), protein kinase C (PKC) and protein kinase A (PKA) on NF-κB activity and the viability of bovine cerebral endothelial cells (BCECs). In serum-deprivation-induced BCEC death, low doses of TNFα showed a protective effect. TNFα induced NF-κB...
176.

Simultaneous HPLC Analysis of Arachidonic Acid Metabolites in Biological Samples with Simple Solid Phase Extraction

Hyung-GunKim, Young-NaHuh, Kun-SukPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.6 15 779-786 (8 pages)

Hyung-GunKim, Young-NaHuh, Kun-SukPark 저
...
- 3,000원
A reversed-phase high-performance liquid chromatogrphy (RP-HPLC) has been developed to analyze the metabolites of arachidonic acid based on the specificities of ultraviolet absorption of these various metabolites and is sensitive to the nanogram level. This procedure makes it possible to extract complex mixtures of eicosanoids efficiently with a single step and to analyze them simultaneously by RP-HPLC from biological samples using octadesylsilyl silica extraction column and PGB2 as an internal...
177.

Increase of L-type Calcium Current by cGMP-dependent Protein Kinase Regulates in Rabbit Ventricular Myocytes

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

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.6 10 733-742 (10 pages)

JinHan, NariKim, EuiyongKim, WonkyungHo, YungEEarm, HankyounKim 저
...
- 3,000원
Background: We have previously reported that not only cGMP but also 8-Br-cGMP or 8-pCPT-cGMP, specific and potent stimulators of cGMP-dependent protein kinase (cGMP-PK), increased basal L-type calcium current (ICa) in rabbit ventricular myocytes. Our findings in rabbit ventricular myocytes were entirely different from the earlier findings in different species, suggesting that the activation of cGMP-PK is involved in the facilitation of ICa by cGMP. However, there is no direct evidence that...
178.

Roles of Na+-Ca2+ Exchange in the Negative Force-Frequency Relationship

ChangMannKoSoonJinKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.6 8 715-724 (10 pages)

ChangMannKoSoonJinKim 저
...
- 3,000원
Frequency-force relationships (FFR) were studied in electrically field stimulated rat left atria (LA) by reducing the stimulation frequency from resting 3 Hz to test frequencies (0.1-1 Hz) for 5 minutes. The twitch amplitudes of LA elicited the typical negative staircases with 3-phased changes: the initial rapid increase, the second decrease and the following plateau at test frequencies. Verapamil (3⁓10⁣5 M) pretreatment elicited frequency-dependent suppression of the twitch...
179.

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...
180.

Sensitivity of Rabbit Cerebral Artery to Serotonin is Increased with the Moderate Increase of Extracellular K+

SukHyoSuh, SungJinPark, JaiYoungChoi, JaeHoonSim, YoungChulKim, SungJoonKim, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.6 6 695-703 (9 pages)

SukHyoSuh, SungJinPark, JaiYoungChoi, JaeHoonSim, YoungChulKim, SungJoonKim, InsukSo, KiWhanKim 저
...
- 3,000원
[K⁢]O can be increased under a variety of conditions including subarachnoid hemorrhage. The increase of [K⁢]O in the range of 5∼15 mM may affect tensions of blood vessels and can change their sensitivity to various vasoactive substances. Therefore, it was examined in the present study whether the sensitivity of cerebral arteries to vasoactive substances can be changed with the moderate increase of [K⁢]O, using Mulvany-type myograph and [Ca2⁢]c measurement. The...

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