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441.

Effect of Two Hours Head-down Bedrest on Orthostatic Tolerance

Park, Won-Kyun, Lyo, Woon-Jae, Bae, Jae-Hoon, Song, Dae-Kyu, Chae, E-Up 대한생리학회 대한생리학회지 12 Pages

대한생리학회 대한생리학회지 1996, 제 30권 제 2호 6 237-248 (12 pages)

Park, Won-Kyun, Lyo, Woon-Jae, Bae, Jae-Hoon, Song, Dae-Kyu, Chae, E-Up 저
...
- 4,100원
This study was carried out to determine the effect of -6˚ head-down bedrest on the cardiovascular and hormonal responses to orthostasis and to evaluate the mechanism of orthostatic intolerance. Ten healthy young men were changed the body position from -6˚ head-down or supine bedrest for 2 hr to 70˚ head-up tilt for 20 min. During the bedrest, there were no differences in hemodynamic and hormonal changes between the head-down and the supine positions. However, the tendency of decreased...
442.

Modulatory Effect of the Tyrosine Kinase and Tyrosine Phosphatase on the ACh-activated K+ Channel in Adult Rat Atrial Cells

Chang, Kyeong-Jae, Rhie, Sang-Ho, Heo, Ilo, Kim, Yang-Mi, Haan, Jae-Hee, Hong, Seong-Geun 대한생리학회 대한생리학회지 10 Pages

대한생리학회 대한생리학회지 1996, 제 30권 제 2호 3 209-218 (10 pages)

Chang, Kyeong-Jae, Rhie, Sang-Ho, Heo, Ilo, Kim, Yang-Mi, Haan, Jae-Hee, Hong, Seong-Geun 저
...
- 3,000원
rat atrial cell, when activated by 10 μM ACh in the pipette and 100 μM GTP in the bath, the mean open time (τo) and the channel activity (KACh) was 1.13 ms (n=5) and 0.19 (n=6), respectively. Following the application of 1 mM ATP into the bath, τo increased by 34% (1.54 ms, n=5) and KACh by 66% (0.28, n=6). Channel function elevated by ATP was lasted after washout of ATP. However, this ATP-induced increase in the KACh channel function did not occur in pretreated cells with genistein (50 ~...
443.

Transepithelial Transport of Organic Cation and Its Inhibition by Sulfhydryl and Carboxyl Reagents in Opossum Kidney Cell Monolayer

Woo, Jae-Suk, Oh, Se-Ok, Jung, Jin-Sup, Kim, Yong-Keun, Lee, Sang-Ho 대한생리학회 대한생리학회지 10 Pages

대한생리학회 대한생리학회지 1996, 제 30권 제 1호 6 53-62 (10 pages)

Woo, Jae-Suk, Oh, Se-Ok, Jung, Jin-Sup, Kim, Yong-Keun, Lee, Sang-Ho 저
...
- 3,000원
a saturable process which can be stimulated by acidification of the apical medium. The apparent Michaelis-Menten constant (Km) and the maximum velocity(Vmax) for the transport were 41 μM and 147 pmole/ mg protein/ min, respectively. The transport was significantly inhibited by unlabelled TEA, amiloride, cimetidine, choline, and mepiperphenidol added to the basolateral side at 1 mM and was slightly inhibited by 5 mM N1-methylnicotinamide (NMN). Unlabelled TEA added to the apical side stimulated...
444.

Spectral Analysis of Heart Rate Variability during Treadmill Exercise at Various Speeds and Grades

Kim, Hyeong-Jin, Kim, Ki-Hong, Ahn, Dong-Kuk, Park, Jae-Sik 대한생리학회 대한생리학회지 10 Pages

대한생리학회 대한생리학회지 1996, 제 30권 제 1호 5 43-52 (10 pages)

Kim, Hyeong-Jin, Kim, Ki-Hong, Ahn, Dong-Kuk, Park, Jae-Sik 저
...
- 3,000원
This study was aimed to elucidate the changes in heart rate variability during treadmill exercise at various speeds and grades by spectral analysis. Thirty-three untrained male college students aged 20 ~ 26 yr were employed to exercise on a treadmill using 4 speeds (4.02, 5.47, 6.76 and 8.05 km/h) and 6 grades (0, 4, 8, 12, 16 and 20%). A fixed speed was selected for each session with the grade increased every 3 min. The electrocardiogram, respiration and the stepping activity were continuously...
445.

Effect of Blood Pressure on Contractility of Vascular Smooth Muscle and Endothelium-Dependent Relaxation

Suh, Suk-Hyo, Park, Yee-Tae, Lee, Dong-Chul, Seo, Pil-Won, Kim, Ki-Whan 대한생리학회 대한생리학회지 12 Pages

대한생리학회 대한생리학회지 1995, 제 29권 제 2호 10 279-290 (12 pages)

Suh, Suk-Hyo, Park, Yee-Tae, Lee, Dong-Chul, Seo, Pil-Won, Kim, Ki-Whan 저
...
- 4,100원
This study was designed 1) to develop a hypertensive animal model in which the blood pressures (BPs) of symmetric regions (right and left upper extremities) are significantly different and 2) to test the effect of BP per se on the contractility and endothelium-dependent relaxation of vascular smooth muscle. Rabbits were anesthetized with sodium pentobarbital and ventilated with room air via animal respirator. The transverse aorta was exposed through the left second intercostal space and the...
446.

Effects of α1-Adrenergic Receptor Stimulation on Intracellular Na+ Activity and Twitch Force in Guinea-Pig Ventricular Muscles

Chae, Soo-Wan, Gong, Q.Y., Wang, D.Y., Lee, Chin-O. 대한생리학회 대한생리학회지 14 Pages

대한생리학회 대한생리학회지 1995, 제 29권 제 2호 2 203-216 (14 pages)

Chae, Soo-Wan, Gong, Q.Y., Wang, D.Y., Lee, Chin-O. 저
...
- 4,300원
The effects of α1-adrenergic receptor stimulation on membrane potential, intracellular Na+ activity, and twitch force were investigated in ventricular muscles from guinea-pig hearts. Action potentials, intracellular Na+ activity, and twitch force of ventricular papillary muscles were measured simultaneously under various experimental conditions. Stimulation of the α1-adrenergic receptor by phenylephrine produced variable changes in action potential duration, a slight hyperpolarization of the...
447.

Effects of Insulin and IGFS on Growth and Functional Differentiation in Primary Cultured Rabbit Kidney Proximal Tubule Cells -Growth and membrane transport-

Han, Ho-Jae, Park, Kwon-Moo, 대한생리학회 대한생리학회지 12 Pages

대한생리학회 대한생리학회지 1995, 제 29권 제 2호 1 191-202 (12 pages)

Han, Ho-Jae, Park, Kwon-Moo, 저
...
- 4,100원
The purpose of this study was to compare effects of insulin and IGFs on growth, apical membrane enzyme activities and membrane transport systems of primary cultured rabbit kidney proximal tubule cells. Results were as follows: 1. Insulin and IGF-I produced significant growth stimulatory effects at 5 X 10-10M. IGF-II(5 X 10 -10 M) did not stimulate significant cell growth. 2. Insulin stimulated the phosphorylation of a 97 KD protein. It was difficult to determine whether this band represents...
448.

Effects of Ethanol on Neurohumoral Mechanisms for Blood Pressure Regulation in Hemorrhaged Conscious Rats

Park, Yoon-Yub, Park, Jae-Sik, Lee, Won-Jung 대한생리학회 대한생리학회지 12 Pages

대한생리학회 대한생리학회지 1995, 제 29권 제 1호 9 91-102 (12 pages)

Park, Yoon-Yub, Park, Jae-Sik, Lee, Won-Jung 저
...
- 4,100원
in [Na+] but it always moved out of the amniotic sac even when the [Na+] increased in vasopressin injected AF. From the above results, it is suggested that vasopressin in the AF triggers the fetus to urinate, and then the membranes surrounding the AF regulate osmolarity by efflux of Na+. We suggest that prolactin facilitates water outflow across the amniotic membrane during increase in AF volume, in contrast to a constant volume, whereas regulation of [Na+] is partly restricted by prolactin.
449.

Effects of High Glucose on Na,K-ATPase and Na/glucose Cotransporter Activity in Primary Rabbit Kidney Proximal Tubule Cells

Han, Ho-Jae 대한생리학회 대한생리학회지 12 Pages

대한생리학회 대한생리학회지 1995, 제 29권 제 1호 7 69-80 (12 pages)

Han, Ho-Jae 저
...
- 4,100원
Renal proximal tubular hypertrophy and hyperfunction are known to be early manifestations of experimental and human diabetes. As the hypertrophy and hyperfunction have been suggested to be central components in the progression to renal failure, an understanding of their underlying causes is potentially important for the development of therapy. A primary rabbit kidney proximal tubule cell culture system was utilized to evaluate the possibility that the renal proximal tubular hypertrophy and...
450.

Effect of Preconditioning Ischemia on Endothelial Dysfunction Produced by Ischemia-Reperfusion in Rabbit Coronary Artery

Suh, Suk-Hyo, Park, Yee-Tae, Kim, Woong-Heum, Kim, Ki-Whan 대한생리학회 대한생리학회지 10 Pages

대한생리학회 대한생리학회지 1995, 제 29권 제 1호 5 51-60 (10 pages)

Suh, Suk-Hyo, Park, Yee-Tae, Kim, Woong-Heum, Kim, Ki-Whan 저
...
- 3,000원
This study was designed to test whether or not 1) ischemia-reperfusion attenuates endothelium-dependent relaxation of coronary arteries and 2) preconditioning protects the arterial endothelium from ischemia-reperfusion injury. In anesthetized open chest rabbits, branches of the left circumflex artery were exposed to different combinations of the experimental conditions; ischemia (15 minutes), ischemia (15 minutes)-reperfusion (10 minutes), preconditioning ischemia, and pre-conditioning fellowed...

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