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221.

Calcium Current in the Unfertilized Egg of the Hamster

Haan, Jae-Hee, Cho, Soo-Wan, Yang, Young-Sun, Park, Young-Geun, Park, Hong-Gi, Chang, Gyeong-Jae, Kim, Yang-Mi, Park, Choon-Ok, Hong, Se 대한생리학회 대한생리학회지 10 Pages

대한생리학회 대한생리학회지 1994, 제 28권 제 2호 12 215-224 (10 pages)

Haan, Jae-Hee, Cho, Soo-Wan, Yang, Young-Sun, Park, Young-Geun, Park, Hong-Gi, Chang, Gyeong-Jae, Kim, Yang-Mi, Park, Choon-Ok, Hong, Se 저
...
- 3,000원
The iCa2+ began to activate at the lower voltage of -55 mV and reached its peak at -35 mV, being completely inactivated at potentials more positive than -40 mV. These result suggest that iCa2+ in hamster eggs passes through channels with electrical properties similar to low voltage-activated T-type channels. Other results from the present study support this suggestion; First, the inhibitory effect of Ni2+ (IC50=13.7 μM) was more potent than Cd2+ (IC50=123 μM). Second, Ba2+ conductance was...
222.

Calcium-activated Ionic Currents in Smooth Muscle Cells from Rabbit Superior Mesenteric Artery

Lee, Moo-Yeol, Bang, Hyo-Weon, Uhm, Dae-Yong, Rhee, Sang-Don 대한생리학회 대한생리학회지 8 Pages

대한생리학회 대한생리학회지 1994, 제 28권 제 2호 5 151-158 (8 pages)

Lee, Moo-Yeol, Bang, Hyo-Weon, Uhm, Dae-Yong, Rhee, Sang-Don 저
...
- 3,000원
Intracellular free Ca2+ contributes to regulation of various events occurring in vascular smooth muscle cells. One of these events is modulating the membrane iou currents. Single smooth muscle cells were isolated from rabbit mesenteric artery. Three kinds of Ca2+-activated current were studied with the patch clamp method. Ca2+-activated K+ current with a large oscillation was recorded in the depolarized potential range. The single channel conductance of this current was about 250 pS. It was...
223.

Ca2+-activated Cl- Current in Gastric Antral Myocytes

Lee, Moo-Yeol, Bang, Hyo-Weon, Uhm, Dae-Yong, Rhee, Sang-Don 대한생리학회 대한생리학회지 8 Pages

대한생리학회 대한생리학회지 1994, 제 28권 제 2호 4 143-150 (8 pages)

Lee, Moo-Yeol, Bang, Hyo-Weon, Uhm, Dae-Yong, Rhee, Sang-Don 저
...
- 3,000원
The whole-cell mode of the patch clamp technique was used to study Ca2+-activated Cl- current (IClCa) in gastric antral myocytes. Extracellular application of caffeine evoked Ca2+-activated current. In order to isolate the chloride current from background current, all known systems were blocked with specific blockers. The current-voltage relationship of caffeine-induced current showed outward rectification and it reversed at around ECl-. The shift of reversal potential upon the alteration of...
224.

Discharge Patterns and Peripheral Nerve Inputs to Cardiovascular Neurons in the Medulla of Cats: Comparison between the lateral and medial medulla

Kim, Sang-Jeong, Lim, Won-Il, Park, Myoung-Kyu, Lee, Jin, Kim, Jun 대한생리학회 대한생리학회지 10 Pages

대한생리학회 대한생리학회지 1994, 제 28권 제 2호 3 133-142 (10 pages)

Kim, Sang-Jeong, Lim, Won-Il, Park, Myoung-Kyu, Lee, Jin, Kim, Jun 저
...
- 3,000원
The discharge patterns and peripheral nerve inputs to cardiovascular neurons were investigated in rostral ventrolateral medulla (RVLM) and raphe nucleus of cats. The data from the two were compared to determine their roles in cardiovascular regulation and the endogenous analgesic system. Animals were anesthetized with α-chloralose and single cell activities were recorded by carbon-filament microelectrode and their relationships with cardiovascular activity were analyzed. In RVLM area, a total...
225.

Functional Characteristics of Lumbar Spinal Neurons Projecting to Midbrain Area in Rats

Park, Sah-Hoon, Kim, Geon 대한생리학회 대한생리학회지 10 Pages

대한생리학회 대한생리학회지 1994, 제 28권 제 2호 1 113-122 (10 pages)

Park, Sah-Hoon, Kim, Geon 저
...
- 3,000원
The present study was carried out to characterize the functional properties of spinomesencephalic tract (SMT) neurons in the lumbar spinal cord of urethane anesthetized rats. Extracellular single unit recordings were made from neurons antidromically activated by stimulation of the midbrain area, including the deep layers of superior colliculus, periaqueductal gray and midbrain reticular formation. Recording sites were located in laminae I-VII of spinal cord segments of L2-L5. Receptive field...
226.

The Excitatory Mechanism of Substance P in the Antral Circular Muscle of Guinea Pig Stomach

Jun, Jae-Yeoul, Kim, Sung-Joon, Choi, Youn-Baik, Kim, Ki-Whan 대한생리학회 대한생리학회지 10 Pages

대한생리학회 대한생리학회지 1994, 제 28권 제 1호 5 51-60 (10 pages)

Jun, Jae-Yeoul, Kim, Sung-Joon, Choi, Youn-Baik, Kim, Ki-Whan 저
...
- 3,000원
This study was carried out to elucidate the excitatory mechanisms of Substance P in the antral circular muscle, using isometric contraction recording, conventional microelectrode method and whole-cell patch clamp technique. Substance P produced tonic and phasic contractions in a dose-dependent manner and depolarized membrane potential with increased amplitude of slow waves in muscle strips. Voltage-dependent Ca2+ currents were increased by the application of Substance P from a holding potential...
227.

Cardiovascular Neurons Mediating Somatosympathetic Reflex in Rostral Ventrolateral Medulla

Goo, Yong-Sook, Kim, Sang-Jeong, Kim, Jun, Sung, Ho-Kyung 대한생리학회 대한생리학회지 14 Pages

대한생리학회 대한생리학회지 1993, 제 27권 제 2호 7 185-198 (14 pages)

Goo, Yong-Sook, Kim, Sang-Jeong, Kim, Jun, Sung, Ho-Kyung 저
...
- 4,300원
The rostral ventrolateral medulla (RVLM) includes vasopressor neurons, which transmit activation signals to the intermediolateral nucleus (IML) of the spinal cord, where the preganglionic sympathetic nucleus is located, to raise arterial blood pressure (BP). However, controversy exists as to the possible depressor area in the RVLM and the pathway involved. The present study persued evidence far the location of depressor neurons and the pathway by simultaneously observing changes in BP and the...
228.

Effect of Dopamine on the Ca2+-dependent K+ currents in Isolated Single Gastric Myocytes of the Guinea-pig

Rhee, Poong-Lyul, Lee, Sang-Jin, Kim, Sung-Joon, So, In-Suk, Hwang, Sang-Ik, Kim, Ki-Whan 대한생리학회 대한생리학회지 12 Pages

대한생리학회 대한생리학회지 1993, 제 27권 제 2호 3 139-150 (12 pages)

Rhee, Poong-Lyul, Lee, Sang-Jin, Kim, Sung-Joon, So, In-Suk, Hwang, Sang-Ik, Kim, Ki-Whan 저
...
- 4,100원
We have reported that dopamine potentiates spontaneous contractions dose-dependently in guinea-pig antral circular muscle strips (Hwang et al, 1991). To clarify the underlying excitatory mechanism of dopamine on the gastric smooth muscle, the effects of dopamine on voltage-dependent Ca2+ currents and Ca2+ -dependent K+ currents were observed in enzymatically dispersed guinea-pig gastric myocytes using the whole-cell voltage-clamp technique. Experiments were also done using isometric tension...
229.

Effects of Noradrenaline on the Spontaneous Contraction and Ionic Current in the Antral Circular Muscle of Guinea-pig Stomach

Jun, Jae-Yeoul, Lee, Sang-Jin, Kim, Sung-Joon, Suh, Jae-Yul, So, In-Suk, Hwang, Sang-Ik, Kim, Ki-Whan 대한생리학회 대한생리학회지 8 Pages

대한생리학회 대한생리학회지 1993, 제 27권 제 2호 1 115-122 (8 pages)

Jun, Jae-Yeoul, Lee, Sang-Jin, Kim, Sung-Joon, Suh, Jae-Yul, So, In-Suk, Hwang, Sang-Ik, Kim, Ki-Whan 저
...
- 3,000원
There is evidence that noradrenaline enhances spontaneous contractions dose-dependently in guinea-pig antral circular muscle. To investigate the mechanism of this excitatory action, slow waves and membrane currents were recorded using conventional microelectrode techniques in muscle strips and the whole cell patch clamp technique in isolated gastric myocytes. On recording slow waves, noradrenaline (10-5 M) induced the hyperpolarization of the membrane potential, although the shape of the slow...
230.

Voltage-Dependent Ionic Currents and Their Regulation by GTP and Phorbol Ester in the Unfertilized Eggs of Mouse and Hamster

Kim, Ik-Hyun, Kim, Yang-Mi, Haan, Jae-Hee, Park, Choon-Ok, Hong, Seong-Geun 대한생리학회 대한생리학회지 14 Pages

대한생리학회 대한생리학회지 1993, 제 27권 제 1호 9 93-106 (14 pages)

Kim, Ik-Hyun, Kim, Yang-Mi, Haan, Jae-Hee, Park, Choon-Ok, Hong, Seong-Geun 저
...
- 4,300원
The present study was performed to investigate the properties of ionic currents elicited by voltage pulses in the unfertilized eggs of mouse and hamster by using the whole cell voltage clamp techniques and to find out if there are any differences in properties between eggs of the two rodents. In addition, the modulatory effect of G proteins and protein kinase C (PKC) on the ionic channels were observed. The inward current in hamster eggs was shown to be due to Ca2+ current (ica)). The current...

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