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개구리 세포막에 대한 Racemic Ketamine의 영향
이종화(Jong Hwa Lee), George B. Prank 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1991, 제 27권 제 2호 2 99-108 (10 pages)
Racemic ketamine을 사용하여 개구리의 좌골신경 및 toe muscle에 대한 작용을 관찰하였다. 실험방법으로는 214 mM sucrose을 사용하여 서로 다른 두 종류의 투여 방법으로 세포막의 활동 전압에 대한 영향을 electric recording으로 관찰하였다. 즉, intracellular 투여는 single sucrose gap technique으로, extracellar 투여는 double sucrose gap technique을 사용하였으며 그 실험 결과는 아래와 같았다. 1. Racemic ketamine은 개구리의 좌골신경 및 toe muscle의 활동전압을 intracellular 및 extracellular 투여시 모두 의의 있게... -
가토 신장기능에 미치는 뇌실내 Domperidone의 영향
김영수(Young Soo Kim) 대한약리학회 대한약리학잡지 18 Pages
대한약리학회 대한약리학잡지 1988, 제 24권 제 1호 14 135-152 (18 pages)
Dopamine(DA)은 뇌실내 투여시에 항이뇨와 함께 Na 배설증가 경향을 보이며, D1, 및 D2 두 종류의 중추 Dopamine수용체가 신장기능에 서로 상반되는 영향을 미치고 있음이 시사된 바 있다. 본 연구에서는 선택적 D2 길항제인 Comperidone(DOM)을 이용하여 중추 D2 수용체의 역할을 구명코자 하였다. DOM은 측뇌실내로 (icv)투여시 항이뇨 및 Na 배설감소를 초래하였으며 신혈류 및 사구체여과율도 감소하였다. 전신혈압은 약간 증가하였다. 정맥내투여시에는 Na 배설에 변동이 없었다. 신경을 제거한 신장에서는 icv DOM에 의한... -
Interaction between Renin-Angiotensin and Endothelium-Derived Nitric Oxide Systems in Two-Kidney, One Clip Hypertensive Rats
Ahn, Hyun-Tack, Nah, Kook-Joo, Lee, Jong-Un 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1996, 제 30권 제 1호 4 33-42 (10 pages)
The present study was aimed to investigate the role of endothelium-derived nitric oxide (NO) in the control of renin release and to examine if NO is implicated in the development of two-kidney, one clip (2K1C) hypertension. Male Sprague-Dawley rats (150 ~ 200 g) were constricted at the left renal artery. They were then supplemented with NG-nitro-L-arginine methyl ester (L-NAME, 5mg/100 mL) or with L-arginine hydrochloride (400 mg/100 mL) in the drinking water. The control group was supplied... -
Effects of Adenosine on the Ionic Channel Activated by Metabolic Inhibition in Rabbit Ventricular Myocytes
Han, Jin, Kim, Eui-Yong, Ho, Won-Kyung, Earm, Yung-E 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1996, 제 30권 제 1호 1 1-10 (10 pages)
isolated rabbit ventricular myocytes using the patch clamp technique. Internal adenosine had little effects on KaTr channel activity. In an outside-out patch with intrapipette GTP and ATP, external adenosine stimulated KATP channel activity. In an inside-out Patch with intrapipette adenosine, ATP reduced KATP channel activity, and GTP stimulated KATP channel activity. Adenosine receptor activation shifted the half-maximal inhibition Of KATP channel from 70 to 241 μm. These results Suggest that... -
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)
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... -
Role of Endogenous Nitric Oxide in the Control of Renin Release
Lee, Je-Jung, Kim, Dong-Ho, Kim, Young-Jae, Kim, Won-Jae, Yoo, Kwang-Jay, Choi, Ki-Chul, Lee, Jong-Eun, 대한생리학회 대한생리학회지 8 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 2호 13 225-232 (8 pages)
The present study was undertaken to investigate the role of endogenous nitric oxide in renin release under different physiological conditions. In the first series of experiments, renin release was either inhibited by acute volume-expansion (VE) or stimulated by clipping one renal artery in the rat. VE was induced by intravenous infusion of saline (0.9% NaCl) up to 5% of the body weight over 45 min under thiopental (50 mg/kg, IP) anesthesia. VE caused a decrease of plasma renin concentration... -
Rapid Measurement of NH3 and Weak Acid Permeation Through Liposomes and Renal Proximal Tubule Membranes
Bae, Hae-Rahn, Suh, Duck-Joon, Lee, Sang-Ho 대한생리학회 대한생리학회지 12 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 2호 11 203-214 (12 pages)
Using the methods of stopped-flow and epifluorescence microscopy with entrapped fluorophore, membrane permeability of NH3 and weak acids in liposomes, renal brush border (BBMV) and basolateral membrane vesicles (BLMV), and primary culture cells from renal proximal tubule was measured. Permeability coefficient (cm/sec) of NH3 was (2.9 X 10-2 in phosphatidylcholine liposome 25℃), 5.9 X 10-2 in renal proximal tubule cell (37℃), 4.0 X 10-2 and 2.4 X 10-2 in BBMV and BLMV (25℃), respectively.... -
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)
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... -
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)
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 external and internal chloride concentrations was well fitted with results which were calculated by the Nernst equation. Extracellular addition of N-phenylanthranilic acid and niflumic acid which are known anion channel blockers abolished the caffeine induced current. Intracellular application of a...
