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Basic Dose Response of Fluorescent Screen-based Portal Imaging Device
여인환, Yeo. In-Hwan J., Yohannes. Yonas, Zhu. Yunping 대한방사선종양학회 대한방사선종양학회지 7 Pages
대한방사선종양학회 대한방사선종양학회지 1999, Vol.17 No.3 249-255 (7 pages)
목적 : 본 연구의 목적은 섬광판을 사용하는 전자조사문영상장치의 기본적인 선량반응성을 연구하는 것이다. 대상 및 방법 : 팬텀의 두께와 구성 및 팬텀과 영상장치와의 거리를 변화시킴으로 영상장치에 입사하는 방사선질을 변화시켜가면서 조사면평면에서 신호를 읽었다. 또한 섬광에 의한 신호가 전체신호에 기여하는 상대적인 정도를 모사하였다. 결과 : 본 연구는 조사면평면상에서 선량분포가 팬텀과의 거리 및 팬텀의 두께의 함수임을 보였다. 팬텀의 구성에 따라 조사면영상장치에 의한 선량의 오차는 크게는 $7\%$ 에 달하는... -
Repeated dose toxicity of alfa-cypermethrin in rats
S Manna, D Bhattacharyya, TK Mandal, S Das 대한수의학회 Journal of Veterinary Science 5 Pages
대한수의학회 Journal of Veterinary Science 2004, 제 5권 제 3호 9 241-245 (5 pages)
rats were given repeated daily oral dose (1/10 LD50 ) of α-CP for 30 days. The animals were sacrificed on 31st day. Activities of various enzymes, cytochrome P450 and b5 contents in liver, hepatic antioxidant status, tissue residue concentration, haemogram and pathological changes were studied. It increased the serum aminotransaminases (AST, ALT), alkaline phosphatase (ALP), lactate dehydrogenase (LDH) activities and blood glucose level significantly. α-CP decreased RBC count, PCV and Hb level... -
EPID (Electronic Portal Imaging Device)의 유용성에 관한 고찰
이충원, 박도근, 최아현, 안종호, 송기원, Lee. Choong Won, Park. Do Keun, Choi. A Hyun, Ahn. Jong Ho, Song. Ki Weon 대한방사선치료학회 대한방사선치료학회지 11 Pages
대한방사선치료학회 대한방사선치료학회지 2013, Vol.25 No.1 57-67 (11 pages)
대상 및 방법: 대한방사선치료학회, 대한방사선종양학회, Pubmed에서 "EPID", "Portal dosimetry", "Portal image", "Dose verification", "Quality control", "Cine mode", "Quality - assurance", "In vivo dosimetry"와 같은 용어로 검색하여 획득한 50개의 자료(1997~2012)를 대상으로 EPID의 역사와 선량측정(dosimetry), 자세확인(set-up verification), EPID 특성으로 구분하여 EPID의 유용성을 분석 하였다. 결 과: EPID는 1세대 Liquid-filled... -
골반강 내 방사선 치료 환자에서 Electronic Portal Imaging Device(EPID)를 이용한 Portal Image의 유용성에 관한 연구
김우철, 박원, 김현정, 박성용, 조영갑, 노준규, 서창옥, 김귀언, Kim. Woo Chul, Park. Won, Kim. Heon Jong, Park. Seong Young, Cho. Young Kap, Loh. John J, Suh. Chang Ok 대한방사선종양학회 대한방사선종양학회지 8 Pages
대한방사선종양학회 대한방사선종양학회지 1998, Vol.16 No.4 497-504 (8 pages)
ion chamber type의 EPID와 video camera based EPID를 이용한 portal image와 기존의 film을 이용한 port film의 영상의 질을 객관적으로 비교 평가하여 EPID의 유용성을 알아보고자 본 연구를 계획하였다. 대상 및 방법 : 1997년 4월부터 10월까지의 인하대 병원과 세브란스 병원에서 방사선 치료를 받은 골반강내 치료 환자 각 10명씩을 대상으로 환자 1명 당 5-10회의 port film과 EPID를 이용한 portal image를 동시에 얻어 비교하였다. 환자의 나이는 32세에서 79세이었고 2명의 AP영상을 제외하고는 모두 PA영상을 얻었다. 환자의... -
Laparoscopic ovariectomy in dogs: comparison between laparoendoscopic single-site and three-portal access
Angelo E. Tapia-Araya, Idoia D?az-G?emes Martin-Portugu?s, Laura Fresno Bermejo, Francisco Miguel S?nchez-Margallo 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 4호 17 525-530 (6 pages)
portal laparoscopic ovariectomy (Lap-OVE) in dogs. Ten female mixed breed dogs were included in the study. Dogs were divided into group 1 (LESS-OVE; n = 5) and group 2 (Lap-OVE; n = 5). All procedures were performed by laparoscopic-skilled surgeons, and the anesthetic protocol was the same for all patients. In both groups, the ovarian vascular pedicle and ligaments were transected using a bipolar vessel sealer/divider device. The mean total surgical time was slightly longer in LESS-OVE (36.6 ±... -
Electronic Portal Imaging Device(EPID)의 유용성 평가
이양훈, 김보겸, 정치훈, 이제희, 박흥득, Lee. Yang-Hoon, Kim. Bo-Kyoum, Jung. Chi-Hoon, Lee. Je-Hee, Park. Heung-Deuk 대한방사선치료학회 대한방사선치료학회지 13 Pages
대한방사선치료학회 대한방사선치료학회지 2005, Vol.17 No.1 19-31 (13 pages)
치료부위의 재현성을 유지하기 위해 Port film을 통한 정도관리가 이루어져 왔으며 Mega Voltage Imaging (MVI) System(mvis)이 출현한 이후로 많은 발전을 이루어 현재는 필름과 Electronic portal Image Device(EPID)를 통한 정도관리가 함께 이루어지고 있다. 이에 본 논문에서는 현재 사용하고 있는 EPID 시스템의 소개와 amorphous silicon (aSi) type EPID가 Intersity Modulated Radiation Therapu(IMRT)에서 film dosimetry를 대체할 수 있는지에 대한 가능성을 분석하였다. 대상 및 방법 : Varian 21EX의 aSi type EPID와 Varian... -
Comparison of the effects of isoflurane versus propofolremifentanil anesthesia on oxygen delivery during thoracoscopic lung lobectomy with one-lung ventilation in dogs
Jiyoung Park, Hae-Beom Lee, Seong Mok Jeong 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 3호 12 426-433 (8 pages)
This study compared effects of isoflurane inhalation (ISO) and propofol-remifentanil combined total intravenous anesthesia (TIVA) on oxygenation during thoracoscopic lung lobectomy with 30-min one-lung ventilation (1LV). Thoracoscopic right middle lung lobectomy was performed in ten dogs divided into ISO and TIVA groups, and cardiopulmonary parameters were measured with blood gas analysis. Throughout the study, isoflurane was inhaled up to 1.5%, and the infusion rates of propofol and... -
Optimal scan delay depending on contrast material injection duration in abdominal multi-phase computed tomography of pancreas and liver in normal Beagle dogs
Soo-Young Choi, In Lee, Ji-Won Seo, Hyun-Young Park, Ho-Jung Choi, Young-Won Lee 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2016, 제 17권 제 4호 15 555-561 (7 pages)
This study was conducted to establish the values for optimal fixed scan delays and diagnostic scan delays associated with the bolus-tracking technique using various contrast material injection durations in canine abdominal multi-phase computed tomography (CT). This study consisted of two experiments employing the crossover method. In experiment 1, three dynamic scans at the porta hepatis were performed using 5, 10 and 15 sec injection durations. In experiment 2, two CT scans consisting of five... -
N-acetylcysteine protects against cadmium-induced oxidative stress in rat hepatocytes
Jicang Wang, Huali Zhu, Xuezhong Liu, Zongping Liu, 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 4호 4 485-493 (9 pages)
Cadmium (Cd) is a well-known hepatotoxic environmental pollutant. We used rat hepatocytes as a model to study oxidative damage induced by Cd, effects on the antioxidant systems, and the role of N-acetylcysteine (NAC) in protecting cells against Cd toxicity. Hepatocytes were incubated for 12 and 24 h with Cd (2.5, 5, 10 μM). Results showed that Cd can induce cytotoxicity: 10 μM resulted in 36.2% mortality after 12 h and 47.8% after 24 h. Lactate dehydrogenase, aspartate... -
Enhancing mucosal immunity in mice by recombinant adenovirus expressing major epitopes of porcine circovirus-2 capsid protein delivered with cytosine-phosphate-guanosine oligodeoxynucleotides
Hong-tao Chang, Xiu-yuan He, Yu-Feng Liu, Lu Chen*, Quan-hai Guo, Qiu-ying Yu, Jun Zhao, Xin-wei Wang, Xia Yang, Chuan-qing Wang 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 3호 8 399-407 (9 pages)
A recombinant replication-defective adenovirus expressing the major epitopes of porcine circovirus-2 (PCV-2) capsid protein (rAd/Cap/518) was previously constructed and shown to induce mucosal immunity in mice following intranasal delivery. In the present study, immune responses induced by intranasal immunization with a combination of rAd/Cap/518 and cytosine-phosphate-guanosine oligodeoxynucleotides (CpG ODN) were evaluated in mice. The levels of PCV-2-specific IgG in serum and IgA in saliva,... -
Oxidative response of neutrophils to platelet-activating factor is altered during acute ruminal acidosis induced by oligofructose in heifers
Claudia Concha, María Daniella Carretta, Pablo Alarcón, Ivan Conejeros, Diego Gallardo, Alejandra Isabel H 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 2호 7 217-224 (8 pages)
Reactive oxygen species (ROS) production is one of the main mechanisms used to kill microbes during innate immune response. D-lactic acid, which is augmented during acute ruminal acidosis, reduces platelet activating factor (PAF)-induced ROS production and L-selectin shedding in bovine neutrophils in vitro. This study was conducted to investigate whether acute ruminal acidosis induced by acute oligofructose overload in heifers interferes with ROS production and L-selectin shedding in blood... -
Pathogen translocation and histopathological lesions in an experimental model of Salmonella Dublin infection in calves receiving lactic acid bacteria and lactose supplements
Laureano S. Frizzo*, Maria V. Zbrun, Lorena P. Soto, Ezequiel Bertozzi, Gabriel J. Sequeira, Luis E. Marti, Marcelo L. Signorini 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2012, 제 13권 제 3호 7 261-270 (10 pages)
a daily dose of 10 CFU/kg body weight of each strain throughout the experiment. Lactose was provided to the L-LAB-G in doses of 100 g/day. Salmonella Dublin (2 × 10 CFU) was orally administered to all animals on day 11 of the experiment. The microscopic lesion index values in target organs were 83%, 70%, and 64.3% (p ＜ 0.05) for the C-G, LAB-G, and L-LAB-G, respectively. Administration of the probiotic inoculum was not fully effective against infection caused by Salmonella. Although probiotic... -
Three-dimensional CT angiography of the canine hepatic vasculature
Yucheol Jeong, Changyun Lim, Sunkyoung Oh, Joohyun Jung, Jinhwa Chang, Junghee Yoon, Mincheol Choi* 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 4호 11 407-414 (8 pages)
Eight Beagle dogs were anesthetized and were imaged using a single channel helical CT scanner. The contrast medium used in this study was iohexol (300 mg I/ml) and doses were 0.5 ml/kg for a cine scan, 3 ml/kg for an enhanced scan. The flow rate for contrast material administration was 2 ml/sec for all scans. This study was divided into three steps, with unenhanced, cine and enhanced scans. The enhanced scan was subdivided into the arterial phase and the venous phase. All of the enhanced scans... -
The inhibitory effect of quercitrin gallate on iNOS expression induced by lipopolysaccharide in Balb/c mice
Hyun-Ye Jo, Youngsoo Kim, Sang-Yoon Nam, Beom Jun Lee, Yun-Bae Kim, Young Won Yun, Byeongwoo Ahn 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 3호 6 267-272 (6 pages)
revealed that the increased levels of iNOS expression that occurred in response to treatment with LPS were significantly attenuated in response to QGR pretreatment. Histologically, LPS induced the infiltration of polymorphonuclear neutrophils in portal veins and sinusoids and caused the formation of a large number of necrotic cells; however, pretreatment with QGR attenuated these LPS induced effects. Taken together, these results indicate that QGR inhibits iNOS expression in vivo as well as in... -
Inherited canine copper toxicosis in Australian Bedlington Terriers
Changbaig Hyun and Lucio John Filippich 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2004, 제 5권 제 1호 4 19-28 (10 pages)
Inherited copper toxicosis in Bedlington Terriers (CTBT) is a copper associated hepatopathy caused by an autosomal recessive genetic defect of gene involving copper metabolism. To compare clinical and histopathological findings with previous reports and to expand our knowledge for future genetic studies, 18 terriers were clinically and histopathologically examined in this study. Pedigree information and dietary history were obtained from the owners before a thorough clinical examination was... -
Korean red ginseng prevents ethanol-induced hepatotoxicity in isolated perfused rat Liver
Hye Min Park , Shang Jin Kim , Hyeon Kyu Go , Gi Beum Kim , Sung Zoo Kim , Jin Shang Kim , Hyung Sub Kang 대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 6 Pages
대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 2011, 제 51권 제 2호 10 159-164 (6 pages)
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Inhibition of voltage-dependent K+ current in rabbit coronary arterial smooth muscle cells by the class Ic antiarrhythmic drug propafenone
Jin Ryeol An, Hongliang Li, Mi Seon Seo, Won Sun Park 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2018, Vol.22 No.5 13 597-605 (9 pages)
a dose-dependent manner, with an apparent IC50 value of 5.04±1.05 μM and a Hill coefficient of 0.78±0.06. The application of propafenone had no significant effect on the steady-state activation and inactivation curves, indicating that propafenone did not affect the voltage-sensitivity of Kv channels. The application of train pulses at frequencies of 1 or 2 Hz progressively increased the propafenone-induced inhibition of the Kv current. Furthermore, the inactivation recovery time constant was... -
Curcumin protects against the intestinal ischemia-reperfusion injury: involvement of the tight junction protein ZO-1 and TNF-α related mechanism
ShuyingTian, RuixueGuo, SichenWei, YuKong, XinliangWei, WeiweiWang, XiaomengShi, HongyuJiang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.2 2 147-152 (6 pages)
Present study aimed to investigate the effect of curcumin-pretreatment on intestinal I/R injury and on intestinal mucosa barrier. Thirty Wistar rats were randomly divided into: sham, I/R, and curcumin groups (n=10). Animals in curcumin group were pretreated with curcumin by gastric gavage (200 mg/kg) for 2 days before I/R. Small intestine tissues were prepared for Haematoxylin & Eosin (H&E) staining. Serum diamine oxidase (DAO) and tumor necrosis factor (TNF)-α levels were measured.... -
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... -
Effect of ECQ on Iodoacetamide-Induced Chronic Gastritis in Rats
SeEunLee, HyunJuSong, SunYoungPark, YoonjinNam, ChangHoMin, DoYeonLee, JunYeongJeong, HyunSuHa, Hyun-JungKim, WanKyunWhang, JiHoonJeong, In 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.5 14 469-477 (9 pages)
This study investigated effect of extract containing quercetin-3-O-Ղ-D-glucuronopyranoside from Rumex Aquaticus Herba (ECQ) against chronic gastritis in rats. To produce chronic gastritis, the animals received a daily intra-gastric administration of 0.1 ml of 0.15% iodoacetamide (IA) solution for 7 days. Daily exposure of the gastric mucosa to IA induced both gastric lesions and significant reductions of body weight and food and water intake. These reductions recovered with treatment with... -
Anti-Oxidative and Anti-Inflammatory Effects of QGC in Cultured Feline Esophageal Epithelial Cells
MyeongJaeLee, HyunJuSong, JunYeongJeong, SunYoungPark, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.1 12 81-87 (7 pages)
Quercetin-3-O-Ղ-D-glucuronopyranoside (QGC) is a flavonoid glucoside extracted from Rumex Aquaticus Herba. In the present study, anti-oxidative and anti-inflammatory effects of QGC were tested in vitro. Epithelial cells obtained from cat esophagus were cultured. When the cells were exposed to acid for 2 h, cell viability was decreased to 36%. Pretreatment with 50 ՌM QGC for 2 h prevented the reduction in cell viability. QGC also inhibited the productions of intracellular ROS by... -
The Protective Effect of Eupatilin against Hydrogen Peroxide-Induced Injury Involving 5-Lipoxygenase in Feline Esophageal Epithelial Cells
JaeChunLim, SunYoungPark, YoonjinNam, ThanhThaoNguyen, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.5 4 313-320 (8 pages)
In this study, we focused to identify whether eupatilin (5,7-dihydroxy-3',4',6-trimethoxyflavone), an extract from Artemisia argyi folium, prevents H2O2-induced injury of cultured feline esophageal epithelial cells. Cell viability was measured by the conventional MTT reduction assay. Western blot analysis was performed to investigate the expression of 5-lipoxygenase by H2O2 treatment in the absence and presence of inhibitors. When cells were exposed to 600 ՌM H2O2 for 24 hours, cell... -
Activation of the cGMP/Protein Kinase G Pathway by Nitric Oxide Can Decrease TRPV1 Activity in Cultured Rat Dorsal Root Ganglion Neurons
YunjuJin, JunKim, JiyeonKwak 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.3 10 211-217 (7 pages)
Recent studies have demonstrated that nitric oxide (NO) activates transient receptor potential vanilloid subtype 1 (TRPV1) via S-nitrosylation of the channel protein. NO also modulates various cellular functions via activation of the soluble guanylyl cyclase (sGC)/protein kinase G (PKG) pathway and the direct modification of proteins. Thus, in the present study, we investigated whether NO could indirectly modulate the activity of TRPV1 via a cGMP/PKG-dependent pathway in cultured rat dorsal root... -
Roles of Non-cholinergic Intrapancreatic Nerves, Serotonergic Nerves, on Pancreatic Exocrine Secretion in the Isolated Perfused Rat Pancreas
ZhengerJiang, Bich-NaShin, In-HyeKim, HyunJooLee, Jun-HwanYong, Min-JaeLee, Moo-HoWon, Yun-LyulLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.5 9 307-312 (6 pages)
It has been rereported that axons which display 5-hydroxytryptamine (5-HT) immunoreactivity are abundant in the pancreas and the majority of serotonergic axons terminate within intrapancreatic ganglia, islet and acini. This histological result strongly suggests that intrapancreatic serotonergic nerves could affect to the pancreatic endocrine and exocrine secretion. Thus, this study was aimed to investigate whether intrapancreatic serotonergic nerves could affect pancreatic exocrine secretion and... -
Roles of Gonadal Steroids on Exocrine Secretion of Isolated Perfused Rat Pancreas
HyungSeoPark, SeHoonKim, HyoungJinPark, MeeYoungLee, YoungHeeHan 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.4 5 217-221 (5 pages)
the spontaneous pancreatic fluid and amylase secretion dose-dependently. However, estradiol-17β did not exert any influence on spontaneous pancreatic exocrine secretion. Exogenous secretin, cholecystokinin (CCK), and acetylcholine markedly stimulated pancreatic fluid and amylase secretion. Progesterone initially enhanced secretin-induced amylase secretion, but this stimulatory response declined thereafter to basal value. Moreover, secretin-induced fluid secretion was not affected by infusion of... -
Effects of γ-Aminobutyric Acid on Intrinsic Cholinergic Action in Exocrine Secretion of Isolated, Perfused Rat Pancreas
YongDeukPark, HyungSeoPark, ZhengYunCui, HyoungJinPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.3 8 169-174 (6 pages)
fluid and amylase dose-dependently. GABA (10, 30, 100μM) also further increased acetylcholine (5μM)-induced secretions of fluid and amylase in a dose-dependent manner. Bicuculline (10μM) effectively blocked the enhancing effects of GABA (30μM) on the pancreatic secretions evoked by either EFS or CCK. Both atropine (2μM) and tetrodotoxin (1μM) markedly reduced the GABA (10μM)-enhanced EFS- or CCK-induced pancreatic secretions. The results indicate that GABA enhances intrinsic cholinergic... -
Effects of Protein Kinase C Modulation on Hepatic Hemodynamics and Glucoregulation
JoongWooLee, InDeokKong, KyuSangPark, HaeSookChung, JamesPFilkins 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.6 5 571-578 (8 pages)
under a constant flow of 50 ml/min at 35oC. Portal vein pressure, glucose and lactate concentrations in the medium and oxygen consumption rates were continuously monitored by a Grass polygraph, YSI glucose and lactate monitors, and a YSI oxygen monitor, respectively. PMA at concentration of 2 to 200 nM increased the portal vein pressure, glucose and lactate production, but decreased oxygen consumption rate in a dose-dependent fashion. H-7 (200μM) attenuated PMA (50 nM)- induced vasoconstriction... -
Effect of Prostaglandins D2, E2 and I2 on the Regulation of KATP Channel Activity in Rat Cardiac Myocytes
Jeong-MinJu, Seung-YeolNah, Jae-HaKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.5 7 507-512 (6 pages)
dose-dependent manner when the channel activities were attenuated by the administration of 100 μM ATP to the internal solution in the inside-out patch. Channel activations by the prostaglandins were abolished by 50 μM glibenclamide, a KATP channel blocker. Dose-response curves of relative channel activity against the ATP concentrations of internal solution in the inside-out patch were shifted to the right in the presence of those three prostaglandins. The rank order of the channel stimulatory... -
A Role of Endogenous Somatostatin in Exocrine Secretion Induced by Intrapancreatic Cholinergic Activation
HyungSeoPark, InSunPark, HyeokYilKwon, YunLyulLee, HyoungJinPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.2 6 185-192 (8 pages)
with cysteamine, which was completely restored by intraarterial infusion of somatostatin. EFS significantly increased not only the number of immunoreactive somatostatin cells in the islet but also the concentration of immunoreactive somatostatin in portal effluent. It is concluded from the above results that intrapancreatic cholinergic activation elevates pancreatic exocrine secretion as well as release of endogenous somatostatin. Endogenous somatostatin exerts an inhibitory influence on exocri... -
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... -
Effects of Arachidonic Acid on the Calcium Channel Current (IBa) and on the Osmotic Stretch-induced Increase of IBa in Guinea-Pig Gastric Myocytes
WenXieXu, SungJoonKim, InsukSo, SukHyoSuh, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1997, Vol.1 No.4 10 435-443 (9 pages)
IBa in a dose-dependent manner to 91.1⁑1.4, 72.0⁑3.2, 46.0⁑1.8, and 20.3⁑2.3% at 1, 5, 10, 30 mM, respectively. The inhibitory effect of AA was not affected by 10 ㄍM indomethacin, a cyclooxygenase inhibitor. Other unsaturated fatty acids, linoleic acid (LA) and oleic acid (OA) were also found to suppress IBa but stearic acid (SA), a saturated fatty acid, had no inhibitory effect on IBa. The potency sequence of these inhibitory effects was AA (79.7⁑2.3%) ＞ LA... -
Propranolol이 가토 혈중 주정농도에 미치는 영향에 관한 연구
대한신경정신의학회 신경정신의학 1979, 제 18권 제 3호 6 259-265 (7 pages)
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精神分裂病에서 電氣衝撃療法 後의 血清 prolactin値의 變化
趙東空, 李定均, 金容植, 徐判吉 대한신경정신의학회 신경정신의학 8 Pages
대한신경정신의학회 신경정신의학 1985, 제 24권 제 1호 2 4-11 (8 pages)
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The Effects of Isopropyl 2-(1,3-dithioetane-2-ylidene)-2-[N-(4-methyl-thiazol-2-yl)carbamoyl]acetate (YH439) on Potentiated Carbon Tetrachloride Hepatotoxicity
김상건(Sang Geon Kim), 조주연(Joo Youn Cho) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 3호 12 407-416 (10 pages)
YH439 in a dose-related manner, as supported by decreases in malonedialdehyde production. The role of P450 2E1 induction in the potentiation of CCl4 toxicity and the effects of YH439 were further evaluated using pyridine as a P450 2E1 inducer. Pyridine pretreatment substantially enhanced the CCl4 hepatotoicity by 23-fold, relative to CCl4 alone. YH439, however, failed to reduce the pyridine-potentiated toxicity, suggesting that the other form(s) of cytochroms P450 inducible by pyridine, but not... -
In Vitro Regeneration of Carcinogen Thioacetamide Treated Rat Hepatocytes
유소영(So-Young Yoo), 김규원(Kyu-Won Kim), 이혜정(Hye-Jeong Lee), 최용천(Yong-Chun Choi) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 3호 11 399-406 (8 pages)
Thioacetamide is a non-genotoxic carcinogen, a protein modifying agent. It causes nucleolar hypertrophy in short term treatment. In the present work, thioacetamide treated hepatocytes were observed in vivo and in vitro conditions. After 7 day treatment of rat liver with thioacetamide, the hepatocyte nucleoli were enlarged and their signalling molecules such as B23 and p38 MAPK were increased. When these hepatocytes were released by collagenases and were grown under the conditions of gene therapy... -
Role of Nitric Oxide as an Antioxidant in the Defense of Gastric Cells
김혜영(Hye-young Kim), 이은주(Eun-joo Lee), 김경환(Kyung Hwan Kim) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 3호 10 389-398 (10 pages)
a result, dose - dependent increase in lipid peroxide production as well as dose - dependent decrease in nitrite release and cellular glutathione content were observed in glucose/glucose oxidase - treated cells. Pretreatment of L-arginine, a substrate for nitric oxide synthase, prevented the increase of lipid peroxide production and the reduction of nitrite release as well as glutathione content. Inhibitors of nitric oxide synthase such as NG-nitro-L-arginine methyl ester and NG-nitro-L-arginine... -
고양이의 담낭근 수축에 있어서 세포내 기전
임병용(Byung Yong Rhim), 김치대(Chi Dae Kim), 김동헌(Dong Heon Kim), Piero Biancani, Jose Behar 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 1호 8 67-74 (8 pages)
고양이 담낭근에서 효소학적으로 분리한 평활근 세포는 cholecystokinin octapeptide (CCK-8), acetylcholine (ACh) 및 KCl에 의하여 용량에 의존하여 수축하였다. 이들 효현제 (CCK-5, ACh 및 KCl)에 의한 평활근 세포의 최대수축은 각각10-9M, 10-5M 및 20mM 농도에서 야기되었다. CCK-8에 의하여 야기되는 이들 평활근 세포의 수축은 HEPES 완충액에 Ca2+을 제거시킴에 의하여 영향을 받지 아니하였으나, Ca2+ 대신에 strontium을 첨가시켰을때 수축반응이 완전하게 억제되었다 (p<0.001). 이와는 반대로 KCl에 의한 수축반응은... -
Hypoxia/Reoxygenation과 Acidosis가 위선세포에서 위산분비와 NO Synthase 활성에 미치는 영향
김혜영(Hye-young Kim), 김경환(Kyung Hwan Kim) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1995, 제 31권 제 1호 8 75-84 (10 pages)
NO의 위산분비에 대한 작용을 규명하기 위하여 분리한 토끼위선세포에서 hypoxia/reoxygenation과 acidosis후 위산분비와 NO synthase 활성을 측정하였다. 분리한 위선세포에 30분의 hypoxia와 1시간의 reoxygenation을 주었으며, acidosis를 위하여 배지의 pH를 6.0과 4.0으로 변화시켜 실험하였다. 위산분비는 위선세포 내와 외의 [14C]-aminopyrine 축적비율로 측정하였으며, NO synthase 활성은 NO의 전구물질인 [14C]L-arginine으로부터 [14C]-citrulline으로의 전환율로 결정하였다. 결과로서 dibutyryl cAMP는 농도 의존적으로... -
Cromakalim이 해명의 과민반응 매개체 유리에 미치는 영향
노재열(Jai Youl Ro), 김경환(Kyung Hwan Kim) 대한약리학회 대한약리학잡지 12 Pages
대한약리학회 대한약리학잡지 1993, 제 29권 제 2호 12 263-274 (12 pages)
K+통로는 기도 평활근 세포에 존재하며 이들 통로가 활성화되면 평활근의 과분극의 결과 이완작용이 나타난다. K+통로의 이런 효과는 과민반응과 천식 치료에 응용될 수 있으므로 우리는 K+통로 개방제인 cromakalim (BRL34915, CK)이 IgG1 항체로 감작시킨 기도 및 폐조직으로 부터 유리되는 매개체 유리에 미치는 영향을 조사하였다. 피동적으로 감작된 두 조직은 2 × 10-6 M의 CK로 30분동안 superfusion시킨 후 CK와 항원 (Ox-HSA) 0.1 mg/ml로 자극하였다. 또한 비만세포를 이용하여 CK의 효과를 조사하였다. 해명 폐조직... -
Pancreatic Polypeptide Family의 심혈관계 근육 수축성에 대한 약리학적 작용: I. 개의 뇌혈관에서 cyclic nucleotide활성제와 칼륨통로개방제와의 상호작용
김원준(Won Joon Kim), 이광윤(Kwang Youn Lee), 하정희(Jeoung Hee Ha), 권오철(Oh Cheol Kwon) 대한약리학회 대한약리학잡지 16 Pages
대한약리학회 대한약리학잡지 1992, 제 28권 제 2호 4 147-162 (16 pages)
Pancreatic polypeptide family펩타이드들의 뇌혈관 평활근 수축성에 미치는 효과를 관찰하고, cyclic nucleotide 활성제 및 칼륨통로개방제와의 상호작용을 관찰하기 위하여 다음과 같은 실험을 하였다. 체중 20 ~ 30 g의 개를 사혈 희생시켜 두개골을 절개한 후 뇌저동맥과 중뇌동맥을 적출하였다. 적출된 동맥편은 4˚C의 생리적식염수 내에서 나선형 절편으로 만들어 0.3%의 CHAPS 용액에 침잠시킴으로써 내피세포층을 제거한 후 95% O2와 5% CO2의 혼합기체로 포화된 37˚C의 Krebs-Henseleit 용액을 포함한 적출근편실험조에서... -
Bromobenzene 간손상에 대한 Diallyl Disulfide의 예방효과
이상일(Sang-Il Lee), 윤종국(Chong-Guk Yoon), 허근(Keun Huh) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1990, 제 26권 제 2호 11 185-192 (8 pages)
Diallyl disulfide의 간손상 예방효과를 검토할 목적으로 mouse에 bromobenzene을 투여해 간 손상의 model을 만든 다음 실험을 행하였을 때, diallyl disulfide를 전처치한 실험군이 대조군에 비하여 간손상의 정도가 경미하게 나타났다. 한편 diallyl disulfide의 간손상예방 효과 기전을 구명할 목적으로 bromobenzene의 활성화 및 해독 관련 효소들의 활성을 검토하였을때 활성화 효소인 aniline hydroxylase와 해독 효소의 일종인 epoxide hydrolase의 활성은 diallyl disulfide 전처치에 의해 변동이 없었으나, 나머지 해독 효소인... -
흰쥐 장관에 있어 칼륨에 의해 활성화되는 칼슘 채널에 대한 Cyclobuxine E의 영향
이종화(Jong-Hwoa Lee), 권준택(Jun-Tack Kwon), 조병헌(Byung-Heon Cho), 최규홍(Kyu-Hong Choi), 김유재(Yu-Jae Kim), 김종배(Jong Bae Kim), 김천숙(Chun-Sook Kim 대한약리학회 대한약리학잡지 6 Pages
대한약리학회 대한약리학잡지 1989, 제 25권 제 1호 6 53-58 (6 pages)
본 연구실에는 최근 수년동안 말라리아, 성병등에 민간약으로 사용되어 온 회양목(Buxus microphylla var. koreana Nakai)으로 부터 다수의 물질을 분리하여 그 약리작용을 경색하여왔다. Coumarin의 유도체인 buxuletin은 이뇨 작용이 있음이 인정되었으며, steroid 성 alkaloid인 Cyclobuxine D(C25H42ON2)는 항염증작용, 흰쥐에서 심박동수 감소작용 및 적출 평활근 이완 작용을 나타냈다. 본 연구에서는 회양목에서 Cyclobuxine D의 유도체인 Cyclobuxine E(C24H38ON2)를 분리하여 그 구조를 이화학적인 방법으로 규명하였으며 흰쥐의... -
문맥 고혈압 흰쥐에 있어서 내장혈관의 아드레나린성 수용체의 기능변동과 이에 대한 Propranolol의 효과
김치대(Chi Dae Kim), 홍기환(Ki Whan Hong) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1988, 제 24권 제 1호 7 63-70 (8 pages)
문맥 고혈압 동물에서 내장장기의 혈류역동학적 변동으로서 문맥압의 증가와 동반하여 장간의 혈류량 증가와 혈관저항의 감소뿐만 아니라 전신 혈관저항의 감소가 특징적으로 야기된다. 문맥고혈압에 있어서 propranolol이 beta 1과 beta 2 수용체의 봉쇄작용으로 문맥고혈압을 저하시킨다는 점에서 사용되기도 한다. 본 실험에서는 흰쥐에서 문맥을 부분적으로 결찰하여 문맥고혈압을 야기하고 10일 후에 내장장기의 혈류역동학적 변동과 혈관 수축성 약물에 대한 반응성의 변동을 관찰하였다. 동시에 이에 대한 propranolol의 효과도... -
Neuroendocrine Control of Gonadotropin Secretion during the Menstrual Cycle
Ryu Kyung-Za 대한약리학회 대한약리학잡지 20 Pages
대한약리학회 대한약리학잡지 1987, 제 23권 제 2호 1 57-76 (20 pages)
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Cholinergic Role on Insulin Action in Exocrine Secretion of the Isolated Rat Pancreas
Lee, Yun-Lyul, Park, Hyung-Seo, Kim, Myoung-Sub, Kwon, Hyeok-Yil, Park, Hyoung-Jin 대한생리학회 대한생리학회지 12 Pages
대한생리학회 대한생리학회지 1996, 제 30권 제 2호 4 219-230 (12 pages)
In order to investigate intra-pancreatic cholinergic roles on insulin action in exocrine secretion, the pancreas was isolated from rats and continuously perfused with modified Krebs-Henseleit solution. Intra-arterial infusion of insulin (100 nM) or cholecystokinin (CCK, 14 pM) alone resulted in stimulation of the volume flow and amylase output. Also insulin potentiated the action of CCK in the exocrine secretion. Tetrodotoxin and atropine completely abolished the potentiating action of insulin... -
The Action of Ginkgo Bibloba Extract in the Isolated Rabbit Corpus Cavernosum
Chung, Woo-Sik, Choi, Young-Deuk, Park, Young-Yo, Hah, Jong-Sik 대한생리학회 대한생리학회지 8 Pages
대한생리학회 대한생리학회지 1995, 제 29권 제 1호 6 61-68 (8 pages)
The extract of Ginkgo bibloba (EGb) is a complex mixture of natural products from the Ginkgo leaves and clinically used for the treatment of cerebral and peripheral circulatory disturbances due to its combined activity of several vasoactive principles. In this study we investigated the action of EGb and its mechanism in isolated rabbit corporal smooth muscle to evaluate the possibility of using this material as a pharmacoerecting agent. Strips of rabbit corpus cavernosum were mounted in organ... -
Effect of Cyclic Nucleotides on Phorbol Ester-Induced Contraction in Rabbit Carotid Artery
Jung, Dong-Keun, Woo, Jae-Suk, Jung, Jin-Sup, Kim, Yong-Keun, Lee, Sang-Ho 대한생리학회 대한생리학회지 12 Pages
대한생리학회 대한생리학회지 1995, 제 29권 제 1호 4 39-50 (12 pages)
cyclic GMP relaxed both of them with dose dependency. A large dose of forskolin relaxed PDBu-induced contraction. PDBu increased cyclic AMP without considerable change in the level of cyclic GMP. Based on these findings, PDBu-induced contraction of rabbit carotid artery was relaxed by cyclic GMP more effectively than cyclic AMP, and the action of cyclic AMP could be mediated by cyclic GMP dependent protein kinase. Therefore it is suggested that the antagonistic action between protein kinase C... -
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)
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...
