자료유형
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- 대한생리학회-대한약리학회(158)
- 대한생리학회(53)
- 대한약리학회(42)
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- THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY(158)
- 대한생리학회지(53)
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H2 Receptor-Mediated Relaxation of Circular Smooth Muscle in Human Gastric Corpus: the Role of Nitric Oxide (NO)
SangEokLee, DaeHoonKim, YoungChulKim, Joung-HoHan, WoongChoi, ChanHyungKim, HyeWonJeong, Seon-MeePark, SeiJinYun, Song-YiChoi6, RohyunSung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.5 11 425-430 (6 pages)
(4,3-A) quinoxalin-1-one (ODQ), an inhibitor of soluble guanylate cyclase (sGC), did inhibit histamine-induced tonic relaxation. In particular, histamine-induced tonic relaxation was converted to tonic contraction by pretreatment with L-NAME. Ranitidine, the H2 receptor blocker, inhibited histamine-induced tonic relaxation. These findings suggest that histamine produced relaxation in circular smooth muscle of human gastric smooth muscle through H2 receptor and NO/sGC pathways. -
Nitric Oxide-mediated Relaxation by High K＋ in Human Gastric Longitudinal Smooth Muscle
YoungChulKim, WoongChoi, Hyo-YoungYun, RohyunSung, RaYoungYoo, Seon-MeePark, SeiJinYun, Mi-JungKim, Young-JinSong, Wen-XieXu, SangJinLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.6 12 405-414 (10 pages)
This study was designed to elucidate high-K＋ induced response of circular and longitudinal smooth muscle from human gastric corpus using isometric contraction. Contraction from circular and longitudinal muscle stripes of gastric corpus greater curvature and lesser curvature were compared. Circular smooth muscle from corpus greater curvature showed high K＋ (50 mM)-induced tonic contraction. On the contrary, however, longitudinal smooth muscle strips showed high K＋ (50 mM)-induced sustained... -
Relaxation Patterns of Human Gastric Corporal Smooth Muscle by Cyclic Nucleotides Producing Agents
YoungChulKim, WoongChoi, RohyunSung, HeonKim, RaYoungYou, Seon-MeePark, SeiJinYoun, Mi-JungKim, Young-JinSong, Wen-XieXu, SangJinLee, Hyo-Y 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.6 15 503-510 (8 pages)
of corporal circular smooth muscle in human stomach. Gastric circular smooth muscle showed regular spontaneous contraction, and FSK, ISO and SNP inhibited its phasic contraction and basal tone in a concentration-dependent manner. High K＋ (50 mM) produced sustained tonic contraction, and ACh (10ՌM) produced initial transient contraction followed by later sustained tonic contraction with superimposed phasic contractions. FSK, ISO and SNP inhibited high K＋-induced tonic contraction and also... -
Relaxation Effect of Synthetic Ceramide Analogues in Cat Esophageal Smooth Muscle Cells
DooWonLee, SunYoungPark, JungSuRyu, SungHyoKim, ChaeUkIm, SuHangChoi, SeEunLee, SungKwonKo, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.4 2 137-142 (6 pages)
a role in mediating contraction of cat esophageal smooth muscle cells. We examined the effect of synthesized ceramide analogues on the C2-ceramide and ACh-induced contraction in esophageal smooth muscle cells isolated with collagenase. CY3523, CY3525, or CY3723 inhibited C2-ceramide induced contraction, in a time dependent manne. Each analogue also inhibited the contraction in concentration dependent manners. CY 3523, CY 3525, and CY 3723 had no effect to the contraction induced by PMA. The... -
Changes in Cytosolic Ca2+ but not in cGMP Contents May be more Important to Nitric Oxide-Mediated Relaxation in Depolarized Vascular Smooth Muscle
HyunSeokLeeKiChurlChang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.1 8 63-68 (6 pages)
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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)
phenylephrine and serotonin between the high pressure-exposed vessels and the low pressure-exposed vessels. However, the endothelium-dependent relaxation to acetylcholine and nitroprusside-induced relaxation showed significant differences between the high pressure-exposed and the low pressure-exposed subclavian arteries. From the above results, we suggest that the contractility of vascular smooth muscle is unchanged by the elevated pressure per se. However, the endothelium-dependent relaxation... -
Cyclic AMP Dependent Down Regulation in the Relaxation of Smooth Muscle Cells of Cat Esophagitis
Shin. Chang-Yell, Lee. Yul-Pyo, Song. Hyun-Ju, Je. Hyun-Dong, Sohn. Uy-Dong 대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 8 Pages
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 2007, Vol.30 No.6 715-722 (8 pages)
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Ardipusilloside-I stimulates gastrointestinal motility and phosphorylation of smooth muscle myosin by myosin light chain kinase
ZhiliXu, HanyeLiang, MingboZhang, XiaojunTao, DeqiangDou, LipingHu, TingguoKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.6 5 609-616 (8 pages)
a natural triterpenoid saponin, which was isolated from Ardisia pusilla A. DC. The aim of the study was to evaluate the stimulation of ardipusilloside-I on gastrointestinal motility in vitro and in vivo. The experiment of smooth muscle contraction directly monitored the contractions of the isolated jejunal segment (IJS) in different contractile states, and the effects of ardipusilloside-I on myosin were measured in the presence of Ca2+-calmodulin using the activities of 20 kDa myosin light chain... -
The Inhibitory Mechanism of Gentamicin on Electrical Field Stimulation Response in Rat Bladder Smooth Muscle
ChangHoMin, YiYiWang, JinhyungBae, JungHoonHan, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.5 11 473-478 (6 pages)
To see the inhibitory mechanism of gentamicin in response to electrical field stimulation (EFS) using the rat bladder smooth muscle, atropine or guanethidine was treated but had no effect. Methylsergide, a non-selective 5-HT1, 5-HT2 receptor antagonist was also treated but had on effect. Kinase inhibitors, such as chelerythrine (PKC inhibitor), ML-9 (MLCK inhibitor), or Y27632 (rho kinase inhibitor) were pretreated before gentamicin treatment, but did not have effect. For U73122, a phospholipase... -
Airway Smooth Muscle Sensitivity to Methacholine in Precision-Cut Lung Slices (PCLS) from Ovalbumin-induced Asthmatic Mice
HaeJinKim, YeryungKim, SuJungPark, BoramBae, Hye-RyunKang, Sang-HeonCho, HaeYoungYoo, JooHyunNam, WooKyungKim, SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.1 10 65-72 (8 pages)
sensitivity of airway smooth muscle isolated from Ova-asthma is persistently changed. In this study, the contractions of airways in precision-cut lung slices (PCLS) from control, Ova-asthma, and IL-13 overexpressed transgenic mice (IL-13TG) were compared by analyzing the airway lumen space (AW). The airway resistance in vivo was measured using ple-thysmograph. AHR and increased inflammatory cells in BAL fluid were confirmed in Ova-asthma and IL-13TG mice. In the PCLS from all three groups, MCh... -
Mechanism of Relaxation Via TASK-2 Channels in Uterine Circular Muscle of Mouse
SeungHwaHong, RohyunSung, YoungChulKim, HikaruSuzuki, WoongChoi, YeonJinPark, IllWoonJi, ChanHyungKim, SunChulMyung6, MooYeolLee, TongMook 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.4 14 359-365 (7 pages)
smooth muscle including uterine muscle is suppressed by the activation of K＋ channels. Because contractility of uterine muscle is regulated by extracellular pH and humoral factors, K＋ conductance could be connected to factors regulating uterine contractility during pregnancy. Here, we showed that TASK-2 inhibitors such as quinidine, lidocaine, and extracellular acidosis produced contraction in uterine circular muscle of mouse. Furthermore, contractility was significantly increased in pregnant... -
Alteration of Ryanodine-receptors in Cultured Rat Aortic Smooth Muscle Cells
EunJiKim, DongKwanKim, ShinHyeKim, KyungMooLee, HyungSeoPark, SeHoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.6 15 431-436 (6 pages)
Vascular smooth muscle cells can obtain a proliferative function in environments such as atherosclerosis in vivo or primary culture in vitro. Proliferation of vascular smooth muscle cells is accompanied by changes in ryanodine receptors (RyRs). In several studies, the cytosolic Ca2＋ response to caffeine is decreased during smooth muscle cell culture. Although caffeine is commonly used to investigate RyR function because it is difficult to measure Ca2＋ release from the sarcoplasmic reticulum... -
Cigarette Smoke Extract-induced Reduction in Migration and Contraction in Normal Human Bronchial Smooth Muscle Cells
ChulHoYoon, Hye-JinPark, Young-WooCho, Eun-JinKim, JongDeogLee, KeeRyeonKang, JaeheeHan, DawonKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.6 11 397-404 (8 pages)
of airway smooth muscle cells are key events in the airway remodeling process that occur in lung disease such as asthma, chronic obstruction pulmonary disease, and cancer. These events can be modulated by a number of factors, including cigarette smoke extract (CSE). CSE-induced alterations in the viability, migration, and contractile abilities of normal human airway cells remain unclear. This study investigated the effect of CSE on cell viability, migration, tumor necrosis factor (TNF)-Ձ... -
Characteristics of 5-Hydroxytryptamine Receptors Involved in Contraction of Feline Ileal Longitudinal Smooth Muscle
YiYiWang, SunYoungPark, KyungHoonOh, YoungsilMin, Yun-JeongLee, Seok-YongLee, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.5 3 267-272 (6 pages)
A number of studies have demonstrated that 5-hydroxytryptamine (5-HT) can induce muscle contraction or relaxation response and enhance secretion in the gastrointestinal tract via a multiplicity of 5-HT receptor subtypes. In the present study, we investigated the pharmacological characterization of the 5-HT-induced contractile response in longitudinal smooth muscle isolated from the feline ileum. Addition of 5-HT into muscle chambers enhanced the basal tone and spontaneous activity in a... -
Myoplasmic [Ca2＋], Crossbridge Phosphorylation and Latch in Rabbit Bladder Smooth Muscle
Young-DonKim, Min-HyungCho, Seong-ChunKwon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.3 8 171-177 (7 pages)
Tonic smooth muscle exhibit the latch phenomenon: high force at low myosin regulatory light chains (MRLC) phosphorylation, shortening velocity (Vo), and energy consumption. However, the kinetics of MRLC phosphorylation and cellular activation in phasic smooth muscle are unknown. The present study was to determine whether Ca2＋-stimulated MRLC phosphorylation could suffice to explain the agonist- or high K＋-induced contraction in a fast, phasic smooth muscle. We measured myoplasmic [Ca2＋], MRLC... -
P2X and P2Y Receptors Mediate Contraction Induced by Electrical Field Stimulation in Feline Esophageal Smooth Muscle
YoungRaeCho, HyeonSoonJang, WonKim, SunYoungPark, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.5 10 311-316 (6 pages)
M) also potentiated EFS-induced contractions in a dose-dependent manner. Ecto-ATPase activator apyrase (5 and 10 U/ml) reduced EFS-induced contractions. Inversely, 6-N,N-diethyl-D-Ղ,Ճ- dibromomethylene 5'-triphosphate triammonium (ARL 67156, 10−4 M) increased EFS-induced contraction. These data suggest that endogenous ATP plays a role in EFS-induced contractions which are mediated through both P2X-receptors and P2Y-receptors stimulation in cat esophageal smooth muscle. -
MLCK and PKC Involvements via Gi and Rho A Protein in Contraction by the Electrical Field Stimulation in Feline Esophageal Smooth Muscle
SunYoungPark, JaeHoShim, MinaKim, YihHsiuSun, HyunSooKwak, XiangmeiYan, Byung-ChulChoi, ChaeukIm, SangSooSim, JiHoonJeong, InKyeomKim, Youn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.1 5 29-35 (7 pages)
feline esophageal smooth muscle. In this study, we investigated whether protein kinase C (PKC) may require the on-contraction in response to EFS using feline esophageal smooth muscle. The contractions were recorded using an isometric force transducer. On-contraction occurred in the presence of NG-nitro-L-arginine methyl ester (L-NAME), suggesting that nitric oxide acts as an inhibitory mediator in smooth muscle. The excitatory composition of both contractions was cholinergic dependent which was... -
The Influences of G Proteins, Ca2＋, and K＋ Channels on Electrical Field Stimulation in Cat Esophageal Smooth Muscle
JunHongPark, HyunSikKim, SunYoungPark, ChaeukIm, JiHoonJeong, InKyeomKim, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.5 10 393-400 (8 pages)
(EFS) in distal esophageal smooth muscle, but in the presence of nitric oxide synthase (NOS) inhibitor, L-NAME, contraction by EFS occurs at the same time. The authors investigated the intracellular signaling pathways related with G protein and ionic channel EFS-induced contraction using cat esophageal muscles. EFS-induced contractions were significantly suppressed by tetrodotoxin (1ՌM) and atropine (1ՌM). Furthermore, nimodipine inhibited both on and off contractions by EFS in a... -
Lysophosphatidylcholine Increases Ca2+ Current via Activation of Protein Kinase C in Rabbit Portal Vein Smooth Muscle Cells
SeungsooJung, YounghoLee, SungsikHan, YoungwhanKim, TaiksangNam, DucksunAhn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 4 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.1 5 31-34 (4 pages)
change in atherosclerotic artery remains undetermined. The purpose of the present study was to examine the effects of LPC on L-type Ca2+ current (ICa(L)) activity and to elucidate the mechanism of LPC-induced change of ICa(L) in rabbit portal vein smooth muscle cells using whole cell patch clamp. Extracellular application of LPC increased ICa(L) through whole test potentials, and this effect was readily reversed by washout. Steady state voltage dependency of activation or inactivation properties... -
Regulation of Ba2+-Induced Contraction of Murine Ureteral Smooth Muscle
YoungChulKim, MooYeolLee, Wun-JaeKim, SoonChulMyung, WoongChoi, ChanHyungKim, Wen-XieXu, SeungRyulKim6, SangJinLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.5 7 207-213 (7 pages)
to characterize ureteral smooth muscle motility and also to study the effect of forskolin (FSK) and isoproterenol (ISO) on smooth muscle contractility in murine ureter. High K+ (50 mM) produced tonic contraction by 0.17±0.06 mN (n=19). Neuropeptide and neurotransmitters such as serotonin (5μM), histamine (20μM), and carbarchol (CCh, 10∼50μM) did not produce significant contraction. However, CCh (50μM) produced slow phasic contraction in the presence of 25 mM K+. Cyclopiazonic acid (CPA,... -
Androgen Hormone Inhibits Expression of iNOS and COX-2 Protein in Rat Vascular Smooth Muscle Cell
HwaYoungBae, JiEunPark, EunMiJeon, YoungJinKang, KwangYounLee, HyoungChulChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.4 5 215-222 (8 pages)
We investigated the effects of testosterone and dihydrotestosterone on inflammatory response of iNOS and COX-2 expression in rat vascular smooth muscle cells. Rat vascular smooth muscle cells (VSMC) stimulated with bacterial lipopolysaccharide (LPS; 10μg/ml) for 24 hours were incubated with increasing amounts of testosterone and dihydrotestosterone (1 and 100 nM). LPS was found to induce inflammatory response of iNOS and COX-2 mRNA and protein in VSMC. These processes were affected by male sex... -
The Effect of Carbon Monoxide on L-type Calcium Channel Currents in Human Intestinal Smooth Muscle Cells
InjaLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.6 10 357-362 (6 pages)
of human jejunal circular smooth muscle cells. Cells were voltage clamped with 10 mM barium (Ba2) as the charge carrier, and CO was directly applied into the bath to avoid perfusion induced effects on the recorded currents. 0.2% CO was increased barium current (IBa) by 15⁑2% (mean⁑S.E., p＜0.01, n=11) in the cells. To determine if the effects of CO on barium current were mediated through the cGMP pathway, cells were pretreated with 1-H-[1,2,4]oxadiazolo[4,3,-a]quinoxalin-1-one... -
Involvement of NAD(P)H Oxidase in a Potential Link between Diabetes and Vascular Smooth Muscle Cell Proliferation
HyeYoungJeong, MiRanYun, ChiDaeKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.2 9 103-109 (7 pages)
The cellular mechanisms that contribute to the acceleration of atherosclerosis in diabetes are poorly understood. Therefore, the potential mechanisms involved in the diabetes-dependent increase in vascular smooth muscle cell (VSMC) proliferation was investigated. Using primary culture of VSMC from streptozotocin-induced diabetic rat aorta, cell proliferation assay showed two-fold increase in cell number accompanied with enhanced superoxide generation compared to normal VSMC, 2 days after... -
4-Aminopyridine Inhibits the Large-conductance Ca2+-activated K+ Channel (BKCa) Currents in Rabbit Pulmonary Arterial Smooth Muscle Cells
YoungMinBae, AeranKim, BokyungKim, Sung-IlCho, JunghwanKim, YungEEarm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 4 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.1 5 25-28 (4 pages)
the cell-attached mode of patch-clamp technique for minimal perturbation of intracellular environment. Application of 4-AP also inhibited the single BKCa currents reversibly and dose-dependently. The membrane potential of rabbit pulmonary arterial smooth muscle cells showed spontaneous transient hyperpolarizations (STHPs), presumably due to the STOC activities, which was also inhibited by 4-AP. These results suggest that 4-AP can inhibit BKCa currents in the intact rabbit vascular smooth muscle.... -
G Protein-Coupled Receptor Signaling in Gastrointestinal Smooth Muscle
UyDongSohn, DongSeokKim, KarnamSMurthy 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.4 1 287-297 (11 pages)
smooth muscle cell derived form the circular muscle layer of the intestine, preferential hydrolysis of PIP2 and generation of IP3 and IP3-dependent Ca2 release initiate the contraction. In smooth muscle cells derived from longitudinal muscle layer of the intestine, preferential hydrolysis of PC by PLA2, generation of AA and AA-mediated Ca2 influx, cADP ribose formation and Ca2-induced Ca2 release initiate the contraction. Sustained contraction, however, in both cell... -
The Alteration of Ca2+-activated K+ Channels in Coronary Arterial Smooth Muscle Cells Isolated from Isoproterenol-induced Cardiac Hypertrophy in Rabbit
NariKim, JinHan, EuiyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 5 147-156 (10 pages)
in normal and hypertrophied hearts. These channels were measured from rabbit coronary smooth muscle cells using a patch clamp technique. The main findings of the present study are as follows: (1) the unitary current amplitudes and the slope conductance of coronary KCa channels were decreased without changes of the channel kinetics in isoproterenol-induced cardiac hypertrophy; (2) the sensitivity of coronary KCa channels to the changes of intracellular concentration of Ca2 was reduced in... -
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)
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 dyes into an endothelial cell results in a distribution of the dye to surrounding cells including smooth muscle cells. These observations allow the speculation that myoendothelial gap junctions may have a... -
The Effect of Carbon Monoxide on Contraction, Cytosolic Ca2+ Level and Ionic Currents in Guinea Pig Ileal Smooth Muscle
SeongChunKwon, SeungSooChung, YunSukKim, TaickSangNam 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.6 6 471-477 (7 pages)
of 60 mV, we found that CO had little effect on the peak Ba currents (IBa) when voltage was stepped from 60 mV to 0 mV. In addition, CO showed no effect on the depolarization-activated outward K currents in the all potential ranges. We conclude that CO inhibits smooth muscle contraction mainly by decreasing the Ca2 sensitivity of contractile elements via a cGMP-dependent pathway, not by involving L-type Ca2 and outward-potassium currents in guinea-pig ileum. -
Modulation of Ca2+-Activated Potassium Channels by cGMP- Dependent Signal Transduction Mechanism in Cerebral Arterial Smooth Muscle Cells of the Rabbit
JinHan, NariKim, KwangbokLee, EuiyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.6 2 439-444 (6 pages)
to a phosphorylation of Ca2-activated potassium channel (KCa channel) and is involved in the activation of KCa channel activity in cerebral arterial smooth muscle cells of the rabbit. Single-channel currents were recorded in cell-attached and inside-out patch configurations of patch-clamp techniques. Both molsidomine derivative 3-morpholinosydnonimine-N-ethylcarbamide (SIN-1, 50μM) and 8-(4-Chlorophenylthio)-guanosine-3',5'-cyclic monophosphate (8-pCPT-cGMP, 100μM), a membrane-permeable... -
Nitroxergic Nerve Relaxes Rat Gastric Smooth Muscle by NO-cGMP Pathway
YoongSamYoon, HyoungChulChoi, YoungSookJung, JongHoKim, KwangYounLee, UyDongSohn, JeoungHeeHa, WonJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.5 5 369-378 (10 pages)
circular muscle, whereas L-NAME enhanced the EFS-induced contraction in longitudinal strips. By EFS, the phasic contractions appeared approximately 20∼25 seconds later. L-NAME significantly shortened the delay time to about 2∼3 seconds. In single cell study, ACh contracted gastric smooth muscle cells, SNP relaxed the cells, and the latter also inhibited the ACh-induced contraction. LY 83583 enhanced the ACh-induced contraction and antagonized SNP-induced relaxation. NADPH diaphorase activity... -
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)
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 then decreased... -
The Effect of NO Donor on Contraction, Cytosolic Ca2+ Level and Ionic Currents in Guinea-pig Ileal Smooth Muscle
Seong-ChunKwon, Ki-YoungPark, Duck-SunAhn, Young-HoLee, Bok-SoonKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.1 5 33-40 (8 pages)
was markedly and reversibly inhibited by 10μM SIN-1, and this effect was abolished by ODQ (1μM). In addition, SIN-1 markedly increased the depolarization-activated outward K currents in the all potential ranges. We concluded that SIN-1 inhibits smooth muscle contraction mainly by decreasing [Ca2]i resulted from the inhibition of L-type Ca2 channels and the inhibition of nonselective cation currents and/or by the activation of K currents via a cGMP-dependent pathway. -
Role of K+ Channels to Resting Membrane Potential of Rabbit Middle Cerebral Arterial Smooth Muscle Cells
NariKim, JinHan, EuiyongKim, Yun-HeeKim, Jae-HongSim, Soo-CheonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.6 2 547-554 (8 pages)
in rabbit middle cerebral arterial smooth muscle cells. The RMP and membrane currents were recorded using the whole-cell patch configuration and single KCa channel was recorded using the outside-out patch configuration. Using the pipette solution containing 0.05 mM EGTA, the RMP was 25.76⁑5.08 mV (n=12) and showed spontaneous transient hyperpolarizations (STHPs). The membrane currents showed time- and voltage-dependent outward currents with spontaneous transient outward currents... -
Decreased Voltage Dependent K+ Currents in Cerebral Arterial Smooth Muscle Cells of One-Kidney, One-Clip Goldblatt Hypertensive Rat
YoungSunOh, SeHoonKim, HoeSukKim, ByeongHwaJeon, SeokJongChang, KwangJinKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.5 3 471-479 (9 pages)
The Kv channel activity in vascular smooth muscle cell plays an important role in the regulation of membrane potential and blood vessel tone. It was postulated that increased blood vessel tone in hypertension was associated with alteration of Kv channel and membrane potential. Therefore, using whole cell mode of patch-clamp technique, the membrane potential and the 4-AP-sensitive Kv current in cerebral arterial smooth muscle cells were compared between normotensive rat and one-kidney, one-clip... -
Involvement of Spontaneously Formed Cyclic Nucleotides in Cat Gastric Muscle Relaxation
Sang-SooSim, Hye-JungBaek, Duck-JooRhie, Shin-HeeYoon, SangJuneHahn, Yang-HyeokJo, Myung-SukKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.3 5 275-282 (8 pages)
markedly even in the presence of IBMX. Muscle contraction inhibitors such as isoprenaline, vasoactive intestinal polypeptide and sodium nitroprusside also appeared to increase cyclic nucleotide levels which decreased contraction. Which nucleotide increased the most was dependent on the agonist used. Therefore, irrespective of the cyclic nucleotide class, the spontaneous formation of cyclic nucleotides should be considered in evaluating the mechanism of gastric smooth muscle relaxation. -
Modulation of Outward Potassium Currents by Nitric Oxide in Longitudinal Smooth Muscle Cells of Guinea-pig Ileum
Seong-ChunKwon, SeJoongRim, Bok-SoonKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.2 11 225-232 (8 pages)
currents in nitric oxide-induced relaxation in intestinal smooth muscle, we used whole-cell patch clamp technique in freshly dispersed guinea-pig ileum longitudinal smooth muscle cells. When cells were held at 60 mV and depolarized from 40 mV to 50 mV in 10 mV increments, sustained outward K+ currents were evoked. The outward K+ currents were markedly increased by the addition of 10 ㄍM sodium nitroprusside (SNP). 10 ㄍM S-nitroso-N-acetylpenicillamine (SNAP) and... -
Electrolysis of Physiological Salt Solution Generates a Factor that Relaxes Vascular Smooth Muscle
Pil-OhSongKi-ChurlChang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.2 10 217-223 (7 pages)
aorta than on KCl-contracted one, and inhibited by the pretreatment with methylene blue. Zaprinast, a cGMP-specific phosphodiesterase inhibitor, potentiated the EIRF-induced relaxation. NG-nitro-L-arginine, NO synthase inhibitor, did not inhibit the EIRF-induced relaxation. Deferroxamine, but not ascorbic acid, DMSO potentiated the EIRF-induced relaxation. These results indicate that electrolysis of Krebs solution produces a factor that relaxes vascular smooth muscle via cGMP-mediated mechanism. -
Inhibitory Effects of Ginseng Saponins on c-fos mRNA Expression and the Proliferation of Rat Aortic Vascular Smooth Muscle Cells Stimulated by Angiotensin II
WoongChoi, JinYoungJung, HunSikKim, YeoPyoYun, JongDaePark, HeeYulAhn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.2 8 201-207 (7 pages)
could be developed as an anti-arteriosclerotic agent, we examined the inhibitory effects of ginseng saponins (total saponin[TS], panaxatriol[PT], panaxadiol[PD]) on the expression of c-fos mRNA and the proliferation of cultured rat aortic vascular smooth muscle cells (VSMCs) stimulated by angiotensin II (Ang II). TS and PT (1.0 mg/ml) suppressed c-fos mRNA induction in VSMCs stimulated by 10-5 M Ang II. The order of inhibitory potency was PT>TS. Ginseng saponins (0.01∼1.0 mg/ml) inhibited t... -
Effect of pH on the ATP-sensitive K+ Channel in Aortic Smooth Muscle Cells from Rats
SeHoonKim, IlSuKim, HoeSukKim, ByeongHwaJeon, SeokJongChang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1997, Vol.1 No.5 11 555-563 (9 pages)
The effects of pH on K currents were investigated in single smooth muscle cells isolated from the thoracic aorta of Wistar-Kyoto rats. Whole-cell K currents were recorded in the conventional configuration of the voltage-clamp technique. Pinacidil (10uM) activated the whole-cell current and the pinacidil-activated current was completely inhibited by glibenclamide (10uM) , an inhibitor of ATP-sensitive K channel (KATP channel). Pinacidil-activated current was reversed at near... -
Contractile and Electrical Responses of Guinea-pig Gastric Smooth Muscle to Bradykinin
Kim, Chul-Soo, Jun, Jae-Yeoul, Kim, Sung-Joon, So, In-Suk, Kim, Ki-Whan 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1995, 제 29권 제 2호 5 233-242 (10 pages)
The nonapeptide bradykinin has been shown to exhibit an array of biological activities including relaxation/contraction of various smooth muscles. In order to investigate the effects of bradykinin on the contractility and the electrical activity of antral circular muscle of guinea-pig stomach, the isometric contraction and membrane potential were recorded. Also, using standard patch clamp technique, the Ca2+-activated K currents were recorded to observe the change in cytosolic Ca2+... -
Role of Na+Ca2+ Exchange in the Control of Contractility in Rabbit Basilar Arterial Smooth Muscle
Kim Eui-Yong, Han Jin 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 2호 6 159-168 (10 pages)
contracture. The contractile response to norepinephrine (10-6 M) was augmented by reducing the extracellular Na+ concentration. The relaxation rate from caffeine-induced contraction was dependent on the extracellular Na+ concentration (0 mM, 140 mM). From the above results, it could be suggested that Na+/Ca2+ exchange can move Ca2+ either into or out of rabbit basilar arterial smooth muscle. Ca2+ entry or extrusion is dependent upon the Na+ electrochemical gradient. Na+/Ca2+ exchange plays a... -
The Contractile and Electrical Responses of Guinea-pig s Gastric Smooth Muscle to Serotonin
Lee, Sang-Jin, Hwang, Sang-Ik, Kim, Ki-Whan 대한생리학회 대한생리학회지 14 Pages
대한생리학회 대한생리학회지 1991, 제 25권 제 2호 4 133-146 (14 pages)
muscle strips prepared from antral circular, antral longitudinal, fundic circular, and fundic longitudinal muscles. Experiments were performed using various methods including isometric contraction recording, transmural electrical field stimulation, junction potential recording, intracellular microelectrode technique, and partition stimulation method. The results were as follows: 1) The effect of serotonin on spontaneous contractions was inhibitory in the circular muscle strips of the antrum and... -
Effect of pH on Calcium-Activated Potassium Channels in Pulmonary Arterial Smooth Muscle Cells of the Rabbit
Lee, Suk-Ho, Ho, Won-Kyung, Earm, Yung-E 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1991, 제 25권 제 1호 2 17-26 (10 pages)
Single smooth muscle cells of the rabbit pulmonary artery were isolated by treatment with collagenase and elastase. Using the patch clamp technique, potassium channel activity was recorded from the inside-out membrane patch. The channel had a sin히e channel conductance of about 360 pS in symmetrical concentration of K on both sides of the patch, 150 mM, and had a linear current-voltage relationship. During the application of 10 mM tetraethylammonium (TEA) to the intracellular membrane surface,... -
Myometrial relaxation of mice via expression of two pore domain acid sensitive K+ (TASK-2) channels
Kyu-SangKyeong, SeungHwaHong, YoungChulKim, *, WoongChoi, SunChulMyung, MooYeolLee, RaYoungYou, ChanHyungKim, SoYeonKwon, HikaruSuzuki, Yeo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.5 13 547-556 (10 pages)
Myometrial relaxation of mouse via expression of two‐pore domain acid sensitive (TASK) channels was studied. In our previous report, we suggested that two‐pore domain acid‐sensing K+ channels (TASK-2) might be one of the candidates for the regulation of uterine circular smooth muscles in mice. In this study, we tried to show the mechanisms of relaxation via TASK-2 channels in marine myometrium. Isometric contraction measurements and patch clamp technique were used to verify... -
High K＋-Induced Relaxation by Nitric Oxide in Human Gastric Fundus
DaeHoonKim, YoungChulKim, WoongChoi, Hyo-YoungYun, RohyunSung, HunSikKim, HeonKim, RaYoungYoo, Seon-MeePark6, SeiJinYun6, Young-JinSong, We 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.5 2 297-303 (7 pages)
This study was designed to elucidate high K＋-induced relaxation in the human gastric fundus. Circular smooth muscle from the human gastric fundus greater curvature showed stretch-dependent high K＋ (50 mM)-induced contractions. However, longitudinal smooth muscle produced stretch-dependent high K＋-induced relaxation. We investigated several relaxation mechanisms to understand the reason for the discrepancy. Protein kinase inhibitors such as KT 5823 (1 ՌM) and KT 5720 (1 ՌM) which... -
Lysophosphatidylcholine Attenuates Endothelium-dependent Relaxation Responses through Inhibition of ACh-induced Endothelial [Ca2+]i Increase
Seong-ChunKwon, Yong-HoLee, TaicksangNam, Duck-SunAhn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.1 5 25-30 (6 pages)
Lysophosphatidylcholine (LPC), which accumulates in atherosclerotic arteries, has been reported to inhibit endothelium-dependent relaxation (EDR) in many different species. However, the underlying mechanism of LPC-induced inhibition of EDR is still uncertain. In the present study, we measured simultaneously both isometric tension and cytosolic free Ca2 ([Ca2]i) in rabbit carotid strips, and examined the effect of LPC on tension and [Ca2]i. In carotid strips with... -
Characterization of ETB Receptor-mediated Relaxation in Precontracted Mesenteric Artery from Streptozotocin-induced Diabetic Rats
YangKiEom, KoanHoiKim, ByungYongRhim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.5 8 305-313 (9 pages)
the arterial smooth muscle of diabetic rats, but not in control rats. These observations suggest that ETB receptor may not play a role in maintaining mesenteric vascular tone in normal situation. However, the alterations in ETB receptor sensitivity were found in diabetic rats and lead to the ETB agonist-induced vasorelaxation, which is closely related to NO production. In the state of increased vascular resistance of diabetic mesenteric vascular bed, enhanced NO production by activation of iNOS... -
Mechanism of Acetylcholine-induced Endothelium-dependent Relaxation in the Rabbit Carotid Artery by M3-receptor Activation
Yong-JinSong, Seong-ChunKwon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.6 4 313-318 (6 pages)
In the artery with endothelium, high K increased both [Ca2]i and muscle tension whereas ACh (10μM) significantly relaxed the muscle and increased [Ca2]i. In the presence of NG-nitro-L-arginine (L-NAME, 0.1 mM), ACh increased [Ca2]i without relaxing the muscle. In the artery without endothelium, high K increased both [Ca2]i and muscle tension although ACh was ineffective. 4-DAMP (10 nM) or atropine (0.1μM) abolished ACh-induced increase in [Ca2]i...
