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- THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY(81)
- 대한약리학잡지(33)
- 대한생리학회지(10)
- 신경정신의학(8)
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- BMB REPORTS(1)
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- 대한수의학회 학술대회발표집(1)
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Role of Gap Junctions in the Endothelium-Dependent Hyperpolarization of Vascular Smooth Muscle Cells
YoshimichiYamamoto, MeganF.Klemm, HikaruHashitani, RichardJ.Lang, TsuyoshiSoji, HikaruSuzuki 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.1 1 1-8 (8 pages)
acetylcholine is considered to be produced by the release of an unidentified chemical substance, an endothelium-derived hyperpolarizing factor (EDHF). Several chemicals have been proposed as the candidate for EDHF. However, none of them fulfil completely the nature and property of EDHF. Ultrastructural observation with electron microscope reveals that in some arteries, gap junctions are formed between endothelial and smooth muscle cells. In small arterioles, injection of gap junction permeable... -
Neurotensin Enhances Gastric Motility in Antral Circular Muscle Strip of Guinea-pig
TaeYongKoh, SungJoonKim, SangJinLee, TongMookKang, JaeYeoulJun, JaeHoonSim, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.3 7 227-234 (8 pages)
Many reports suggest that neurotensin (NT) in the gastrointestinal tract may play a possible role as a neurotransmitter, a circulating hormone, or a modulator of motor activity. NT exerts various actions in the intestine; it produces contractile and relaxant responses in intestinal smooth muscle. This study was designed to investigate the effect of NT on motility of antral circular muscle strips in guinea-pig stomach. To assess the role of Ca2 influx in underlying mechanism, slow waves... -
Tyrosine Phosphorylation of Paxillin May be Involved in Vascular Smooth Muscle Contraction
Lian-HuaFang, Kyoung-SooCho, Sang-JinLee, Hee-YulAhn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.3 5 211-217 (7 pages)
Paxillin is a regulatory component of the complex of cytoskeletal proteins that link the actin cytoskeleton to the plasma membrane. However, the role of paxillin during smooth muscle contraction is unclear. We investigated a possible role for the membrane-associated dense plaque protein paxillin in the regulation of contraction in rat aortic vascular smooth muscle. The tyrosine phosphorylation of paxillin, which was increased by norepinephrine, reached a peak level after 1 min stimulation and... -
Effect of Imipramine on Calcium Utilization of Single Cells Isolated from Canine Detrusor
Ho-ShikShim, Hyoung-ChulChoi, Young-SookJeong, Jong-HoKim, Kwang-YounLee, Uy-DongSohn, Jeoung-HeeHa, Won-JoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.4 9 439-445 (7 pages)
at 36oC, and aerated with 95% O2/5% CO2, and then cell suspension was examined. Acetylcholine (ACh) evoked a concentration-dependent contraction of the isolated detrusor cells in normal physiologic salt solution (PSS), and the ACh-induced contraction was significantly inhibited by imipramine. In Ca2-free PSS, ACh-induced contraction was less than those in normal PSS and it was not affected by the pretreatment with imipramine. Ca2-induced contraction in Ca2-free PSS was... -
Mechanism of Pituitary Adenylate Cyclase-Activating Polypeptide- Induced Inhibition on Catecholamine Secretion Evoked by Cholinergic Stimulation and Membrane Depolarization in the Rat Adrenal Gland
Dong-YoonLim, Jeong-WonKang, Young-JoKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 12 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.3 12 339-350 (12 pages)
Bay-K-8644 and cyclopiazonic acid were not altered greatly in comparison to the case of PACAP-treatment only. Taken together, these results suggest that PACAP causes the marked inhibition of CA secretion evoked by stimulation of cholinergic (both nicotinic and muscarinic) receptors as well as by membrane depolarization, indicating that this effect may be mediated by inhibiting influx of extracellular calcium and release in intracellular calcium in the rat adrenomedullary chromaffin cells. -
Cholinergic Activity Related to Cardiovascular Regulation in Rostral Ventrolateral Medulla of Spontaneously Hypertensive Rats
Seok-YongLeeSang-BokLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.1 4 29-34 (6 pages)
the hyperactivity mechanisms of cholinergic system are controversial. Thus, to clarify the mechanisms of cholinergic hyperactivity in RVLM of the SHR, we studied the activities of enzymes that participate in the biosynthesis and degradation of acetylcholine (ACh) and the density of muscarinic receptors in RVLM of the 14- to 18-week-old SHR and age-marched Wistar Kyoto rats (WKY). Choline acetyltransferase activity was far greater in RVLM of SHR than that of WKY. [3H]ACh release from RVLM was... -
Mechanism of Vasoactive Intestinal Polypeptide-Induced Catecholamine Secretion from the Rat Adrenal Medulla
Dong-YoonLim, Jae-BongHeo, Cheol-HeeChoi, Geon-HanLim, Yong-GyoonLee, Song-HoonOh, Il-SikKim, Jong-InKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 12 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.4 6 443-454 (12 pages)
of acetylcholine (ACh, 5.32⁓103 M) resulted in great increases in CA secretion. Tachyphylaxis to releasing effect of CA evoked by VIP was not observed by the repeated perfusion. The net increase in adrenal CA secretion evoked by VIP still remained unaffected in the presence of atropine or chlorisondamine. However, the CA release in response to ACh was greatly inhibited by the pretreatment with atropine or chlorisondamine. The releasing effects of CA evoked by either VIP or ACh were... -
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)
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 suppressed... -
ATP-Sensitive K+ Currents in Gastric Myocytes Isolated from Guinea-pig
JaeYeoulJun, CheolHoYeum, PyungJinYun, JongSeongPark, 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.1 11 85-93 (9 pages)
ATP-sensitive K+ channels (KATP) were not identified in gastric smooth muscle cells. However， in tension recording of intact gastric circular muscle， lemakalim of KATP channels opener in other tissues suppressed mechanical contractions and this effect was blocked by glibenclamide， a specific inhibitor of KATP channels. The aims of this study were to investigate whether KATP channels exist in gastric smooth muscle of guinea-pig and to know its physiological role. Whole cell K'+ curr‘ents... -
동방결절에서 과분극에 의해 활성화되는 내향전류에 대한 Cyclic-GMP의 영향 Effects of Cyclic-GMP on Hyperpolarization-activated inward Current (If) in Sino-atrial Node Cells of Rabbit
유신, 호원경, 엄융의, ShinYoo, Won-KyungHo, YungEEarm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1997, Vol.1 No.6 14 731-739 (9 pages)
The aim of present study is to investigate the effects of cGMP on hyperpolarization activated inward current (If), pacemaker current of the heart, in rabbit sino-atrial node cells using the whole-cell patch clamp technique. When sodium nitroprusside (SNP, 80μM), which is known to activate guanylyl cyclase, was added, If amplitude was increased and its activation was accelerated. However, when If was prestimulated by isopreterenol (ISO, 1μM), SNP reversed the effect of ISO. In the absence of...
