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총 264건 검색
본문검색 결과만 보기
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Guidance Law for Near Space Interceptor based on Block Backstepping Sliding Mode and Extended State Observer
Guo. Chao, Liang. Xiao-Geng 한국항공우주학회 International journal of aeronautical and space sciences 10 Pages
한국항공우주학회 International journal of aeronautical and space sciences 2014, Vol.15 No.2 163-172 (10 pages)
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Intrahepatic portosystemic shunt with a second degree atrioventricular block fixed by transvenous coil embolization in a dog
Seung Gon Lee , So Jeong Nam , Hyun Wook Kim , Chang Baig Hyun , 대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 8 Pages
대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 2008, 제 48권 제 4호 15 493-500 (8 pages)
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Forward-Mode Na+-Ca2+ Exchange during Depolarization in the Rat Ventricular Myocytes with High EGTA
Eun-GiKim, ChangMannKo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.6 5 487-494 (8 pages)
During depolarization, extrusion of Ca2 from sarcoplasmic reticulum through forward-mode Na-Ca2 exchange was studied in the rat ventricular myocytes patch-clamped in whole-cell configuration. In order to confine the Ca2 responses in a micro-domain by limiting the Ca2 diffusion time, rat ventricular myocytes were dialyzed with high (14 mM) EGTA. K current was suppressed by substituting KCl with 105 mM CsCl and 20 mM TEA in the pipette filling solution and... -
실시간 자기상관계의 제작과 CW mode-locked Nd:YLF 레이저의 펄스폭 측정
안승준, 전영민, 공홍진 한국광학회 한국광학회지 6 Pages
한국광학회 한국광학회지 1991, Vol.2 No.4 197-202 (6 pages)
극초단 레이저 펄스의 펄스폭(pulse width)을 측정하기 위하여 SHG방법을 이용한 실시간(real time) 자기상관계(autocorrelator)를 개발하였다. 본 연구에서 개발한 자기상관계의 측정법위는 142 ps이며, 지연(delay) block을 한쪽 arm에 삽입하면 250ps까지 측정범위가 확장된다. CW mode-locked Nd:YLF 레이저의 공진기 길이가 mode-locker의 RF 주파수와 matching 되었을 때 가장 짧은 20ps의 펄스폭을 측정하였으며, 공진기 길이를 detuning함에 따란 39ps와 47ps의 펄스폭을 측정 하였다. -
Comparison of the thickness of the gastrocnemius through ultrasonography during heel-drop exercise performance
Dan-Bee Gal, Su-Young Lee 물리치료재활과학회 Physical Therapy Rehabilitation Science 6 Pages
물리치료재활과학회 Physical Therapy Rehabilitation Science 2016, 제 5권 제 2호 6 89-94 (6 pages)
study. All subjects performed the ankle heel-drop exercise with ankle dorsiflexed to 0°, 10°, and 20°: heel-drop exercise with ankle dorsiflexed to 0° was executed on floor-level, heel-drop exercise with ankle dorsiflexed to 10° on a wooden-block of 2.3 cm in height, and heel-drop exercise with ankle dorsiflexed to 20° on a wooden-block of 5.5 cm in height. In each regimen, the subjects completed a session of 100 heel-drop exercises (10 repetitions×10 sets; with 30 seconds rest following... -
Curriculum for a Subject using Cloud-based SW to Enhance Untact Education Capabilities of Field Teachers
Hur Kyeong 경인교육대학교 교육연구원 The Journal of Education 15 Pages
경인교육대학교 교육연구원 The Journal of Education 2020, Vol.3 No.2 7 109-123 (15 pages)
In this paper, a practical curriculum for using cloud software (SW) is proposed that can be applied as a subject for strengthening the untact education capability of field teachers. For untact education, teachers require content creation and online collaboration skills. Content creation forms are divided into real-time and video contents. Cloud-based SW can be used for online collaboration education. Currently, cloud-based Google and Chrome SW can be used to create real-time and video contents.... -
Examining the possibilities for children’s digital literacy practices at home: Two theoretical perspectives
Lisa Kervin 경인교육대학교 교육연구원 The Journal of Education 14 Pages
경인교육대학교 교육연구원 The Journal of Education 2020, Vol.3 No.2 6 95-108 (14 pages)
The everyday use of digital technologies influences the literacy practices of young children and their families. Literate knowledge, skills, and understandings emerge through interactions between elements of the environment, artefacts or ‘tools’ (digital and non-digital), and people. As technologies become increasingly portable, affordable and efficient there is need to examine how digital experiences contribute to emergent literacy development. I draw upon the 2020 Australian COVID-19... -
Analysis of Operation and Development of Online Learning Systems for Software Education
Han Sun-Gwan 경인교육대학교 교육연구원 The Journal of Education 14 Pages
경인교육대학교 교육연구원 The Journal of Education 2019, Vol.2 No.1 1 1-14 (14 pages)
This study introduces a case of operating the online learning systems for the activation of Software Education as computer science in Korea. Software Education in Korea has emphasized a having computational thinking through a programmable computing capabilities. We have designed the online learning systems that are easy for users to access. Learning areas are divided into six categories: programming, computer science theory, physical computing, computational thinking, software education, and... -
Anti-prion activity of (E)-3,4-dihydroxystyryl 2,3,4-trihydroxybutanoate against BSE-associated prion protein
Hyo Jin Kim, Won Yong Lee, In Soon Roh, Tae Young Suh, Jiwon Choi, Kyoung Tai No, Hae Eun Kang, Hyun Joo Sohn 대한수의학회 대한수의학회 학술대회발표집 2 Pages
대한수의학회 대한수의학회 학술대회발표집 추계학술심포지움 148 270-271 (2 pages)
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Development of In Vitro Cellular Circadian Rhythm Model to Test the Effects of Neurotoxicants on Circadian Rhythm
Young Il Park, Hee Yi, Seok Jin Kang, So Ryeon Hwang, JI Hyun Bang, Jae Young Song, Hyun Ok Ku, Helmut Zarbl, Hwan Goo Kang, Mingzhu Fang 대한수의학회 대한수의학회 학술대회발표집 1 Pages
대한수의학회 대한수의학회 학술대회발표집 추계학술심포지움 147 270-270 (1 pages)
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Microglial involvement in the development of olfactory dysfunction
Yoojin Seo, Hyung-Sik Kim, Kyung-Sun Kang 대한수의학회 Journal of Veterinary Science 12 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 3호 1 319-330 (12 pages)
Olfactory impairment is the most common clinical manifestation among the elderly, and its prevalence increases sharply with age. Notably, growing evidence has shown that olfactory dysfunction is the first sign of neurodegeneration, indicating the importance of olfactory assessment an early marker in the diagnosis of neurological disorders. In this review, we describe the nature of olfactory dysfunction and the advantage of using animal models in olfaction study, and we include a brief... -
Evaluation of the Perkins handheld applanation tonometer in horses and cattle
Silvia Franco Andrade, Daniel Silva Kupper, Luiz Fernando Rodrigues de Pinho, Elizabeth Cunha Franco, Marcus Vin?cius Felix Fabr 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 2호 10 171-176 (6 pages)
intraocular pressure (IOP) in horses and cattle. Both eyes of 10 adult horses and cattle were evaluated in a postmortem study. The eyes from 10 clinically normal adult horses and cattle were also examined after bilateral auriculopalpebral nerve block and topical anesthesia for an in vivo study. IOP was measured postmortem using direct manometry (measured with an aneroid manometer) and tonometry (measured with a Perkins handheld applanation tonometer). The correlation coefficients (r) for the... -
All blood, No stool: enterohemorrhagic Escherichia coli O157:H7 infection
Jang W. Yoon, Carolyn J. Hovde 대한수의학회 Journal of Veterinary Science 14 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 3호 1 219-232 (14 pages)
Enterohemorrhagic Escherichia coli serotype O157:H7 is a pathotype of diarrheagenic E. coli that produces one or more Shiga toxins, forms a characteristic histopathology described as attaching and effacing lesions, and possesses the large virulence plasmid pO157. The bacterium is recognized worldwide, especially in developed countries, as an emerging food-borne bacterial pathogen, which causes disease in humans and in some animals. Healthy cattle are the principal and natural reservoir of E.... -
In vivo morphological and antigenic characteristics of Photobacterium damselae subsp. piscicida
Tae S. Jung*, Kim D. Thompson, Donatella Volpatti, Marco Galeotti, A. Adams 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 2호 7 169-176 (8 pages)
The present study was conducted to examine the morphology and antigenicity of Photobacterium damselae subsp. piscicida by culturing the bacterium in vivo in the peritoneal cavity of sea bass (Dicentrarchus labrax) within dialysis bags with either a low molecular weight (LMW) cut-off of 25 kDa or a high molecular weight (HMW) cut-off of 300 kDa. Differences were observed in the growth rate between the bacteria cultured in vivo or in vitro. Bacteria cultured in vivo were smaller and produced a... -
Phytotherapeutic effects of Echinacea purpurea in gamma-irradiated mice
Amira M. K. Abouelella, Yasser E. Shahein*, Sameh S. Tawfik, Ahmed M. Zahran 대한수의학회 Journal of Veterinary Science 12 Pages
대한수의학회 Journal of Veterinary Science 2007, 제 8권 제 4호 5 341-352 (12 pages)
Echinacea (E.) purpurea herb is commonly known as the purple coneflower, red sunflower and rudbeckia. In this paper, we report the curative efficacy of an Echinacea extract in ■-irradiated mice. E. purpurea was given to male mice that were divided into five groups (control, treated, irradiated, treated before irradiation & treated after irradiation) at a dose of 30 mg/kg body weight for 2 weeks before and after irradiation with 3 Gy of ■-rays. The results reflected the detrimental... -
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... -
Melatonin ameliorates autoimmune encephalomyelitis through suppression of intercellular adhesion molecule-1
JongChul Kang, Meejung Ahn, Yong-Sik Kim, Changjong Moon, Yongduk Lee, Myung-Bok Wie, Young-jae Lee and Taekyun Shin 대한수의학회 Journal of Veterinary Science 5 Pages
대한수의학회 Journal of Veterinary Science 2001, 제 2권 제 2호 3 85-89 (5 pages)
Melatonin (N-acetyl-5-methoxytryptamine), a pineal neurohormone, is a hydroxyl radical scavenger and antioxidant, and plays an important role in the immune system. We studied the effect of exogenous melatonin on the pathogenesis of experimental autoimmune encephalomyelitis (EAE). EAE was induced in Lewis rats by immunization with rat spinal cord homogenates. Subsequent oral administration of melatonin at 5 mg/kg significantly reduced the clinical severity of EAE paralysis compared with... -
Gemcitabine의 세포사멸 기전 연구
설재원, 이유진, 강동원, 강형섭 대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 6 Pages
대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 2005, 제 45권 제 4호 7 495-500 (6 pages)
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ARTISTS IN SCHOOLS: A CASE STUDY OF THE ARTS-IN-EDUCATION PROJECT
Jane CHEUNG 한국음악교육공학회 음악교육공학 11 Pages
한국음악교육공학회 음악교육공학 2004, 제 4호 8 135-145 (11 pages)
최근 예술교육개혁의 목표는 학교 단위의 예술 교과과정의 발달을 위해서 학교에 더 많은 자치권을 허용하고, 예술에서의 우선권을 수행하기 위해 학생들에게 더욱 더 새로운 형태의 공간을 제공하는 등의 실제 현장에서의 장점을 만드는 것이다. 이 연구에서는 홍콩의 2개의 고등학교에서 시도된 학교 교육과정, 학생의 학습과 예술가와의 협력에 관한 “교육에서의 예술” 프로젝트의 효과를 조사하였다. 음악적 생산물에 대해 공식적인 시간과 비공식적인 시간 동안 학교교사와 협력적으로 일한 예술가에 대한 사례연구 결과는 특별한... -
The Structural Time Relationship between the Rhythmical Characteristics of Minimal Music and Film Elements shown in the Film ‘Mishima: A Life in Four Chapters’
이상윤(SangYoon Lee) 한국음악교육공학회 음악교육공학 36 Pages
한국음악교육공학회 음악교육공학 2018, 제 34호 8 135-170 (36 pages)
본 논문에서 영화 ‘Mishima: A Life in Four Chapters’에 쓰인 필립 글래스의 미니멀 음악으로서의 외재적 음악이 영화의 요소들과 어떻게 구조적 시간관계를 형성하는지 연구하였다. 영화의 각 장면에서 미시적으로 나타나는 영화와 음악의 구조적 시간 관계는 음악이 박자 구성을 위하여 화면과 상호보완적 역할을 하는 유형, 음악의 리듬 패턴의 반복점과 영화 요소의 전환점이 시간적 유사성을 가지는 관계로 분석되는 유형, 영화의 전개에 있어서 음악 리듬의 기본 음표 개수 단위 또는 음가단위가 점진적으로 변화하는 것으로... -
피하지방 감량에 있어 경피침주요법의 유효성 및 안전성 평가
송미영(Mi Young Song), 박지훈(Ji Hun Park), 이정호(Jung Ho Lee), 김호준(Ho Jun Kim), 이명종(Myeong Jong Lee) 한방비만학회 대한한방비만학회지 15 Pages
한방비만학회 대한한방비만학회지 2007, 제 7권 제 1호 7 71-85 (15 pages)
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신체 움직임과 음악듣기를 통합한 세계음악교육방법 연구 - 몽골의 긴 노래와 자장가를 중심으로 -
한국음악교육학회 음악교육연구 2022, 제 51권 제 3호 5 95-125 (31 pages)
본 연구의 목적은 신체 움직임 기반 음악듣기를 통해 몽골 음악의 선율적 특징을 분석하고 초?중등을 위한 음악 교수?학습 지도안을 제시하는데 있다. 이를 위해 먼저 문화적 맥락이 음악에 미치는 영향과 세계음악교육에서 음악감상의 중요성 및 요구되는 역할에 대해 살펴보았다. 둘째, 두 곡의 음악적, 문화적 특징을 종합하여 핵심적 듣기 요소들을 분석하였다. 셋째, 캠벨의 3단계 음악듣기활동 중 “참여하며 듣기”의 내용적 의미를 달크로즈의 능동적 듣기의 원칙으로 짚어보고 음악듣기 전략을 발전시켰다. 이를 바탕으로 넷째,... -
Tricyclic antidepressant amitriptyline inhibits 5-hydroxytryptamine 3 receptor currents in NCB-20 cells
Yong Soo Park, Seok Ho Myeong, In-Beom Kim, Ki-Wug Sung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2018, Vol.22 No.5 12 585-595 (11 pages)
a competitive mode. Amitriptyline accelerated the desensitization of the 5-HT3 receptor. When amitriptyline was applied before 5-HT treatment, the currents rose slowly until the end of 5-HT treatment. When amitriptyline was coapplied with 5-HT, currents rose and decayed rapidly. Peak current amplitudes were decreased in both applications. All macroscopic currents recorded in whole cell voltage clamping experiments were reproduced by simulation and the changes of rate constants by amitriptyline... -
MPTP-induced vulnerability of dopamine neurons in A53T α-synuclein overexpressed mice with the potential involvement of DJ-1 downregulation
SeongmiLee, SeungTackOh, HaJinJeong, SokCheonPak, Hi-JoonPark, JongpilKim, Hyun-seokCho, SongheeJeon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.6 7 625-632 (8 pages)
Familial Parkinson’s disease (PD) has been linked to point mutations and duplication of the α-synuclein (α-syn) gene. Mutant α-syn expression increases the vulnerability of neurons to exogenous insults. In this study, we developed a new PD model in the transgenic mice expressing mutant hemizygous (hemi) or homozygous (homo) A53T α-synuclein (α-syn Tg) and their wildtype (WT) littermates by treatment with sub-toxic (10 mg/kg, i.p., daily for 5 days) or toxic (30 mg/kg, i.p., daily for 5... -
Chronic Ca2+ influx through voltage-dependent Ca2+ channels enhance delayed rectifier K+ currents via activating Src family tyrosine kinase in rat hippocampal neurons
Yoon-SilYang, Sang-ChanJeon, Dong-KwanKim, Su-YongEun, Sung-CherlJung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.2 14 259-265 (7 pages)
Excessive influx and the subsequent rapid cytosolic elevation of Ca2+ in neurons is the major cause to induce hyperexcitability and irreversible cell damage although it is an essential ion for cellular signalings. Therefore, most neurons exhibit several cellular mechanisms to homeostatically regulate cytosolic Ca2+ level in normal as well as pathological conditions. Delayed rectifier K+ channels (IDR channels) play a role to suppress membrane excitability by inducing K+ outflow in various... -
Effects of acidic pH on voltage-gated ion channels in rat trigeminal mesencephalic nucleus neurons
Jin-EonHan, Jin-HwaCho, In-SunChoi, Do-YeonKim, Il-SungJang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.2 9 215-223 (9 pages)
The effects of acidic pH on several voltage-dependent ion channels, such as voltage-dependent K+ and Ca2+ channels, and hyperpolarization-gated and cyclic nucleotide-activated cation (HCN) channels, were examined using a whole-cell patch clamp technique on mechanically isolated rat mesencephalic trigeminal nucleus neurons. The application of a pH 6.5 solution had no effect on the peak amplitude of voltage-dependent K+ currents. A pH 6.0 solution slightly, but significantly inhibited the peak... -
DAMGO modulates two-pore domain K+ channels in the substantia gelatinosa neurons of rat spinal cord
PyungSunCho, HanKyuLee, , SangHoonLee, JayZoonIm, SungJunJung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.5 10 525-531 (7 pages)
The analgesic mechanism of opioids is known to decrease the excitability of substantia gelatinosa (SG) neurons receiving the synaptic inputs from primary nociceptive afferent fiber by increasing inwardly rectifying K+ current. In this study, we examined whether a μ-opioid agonist, [D-Ala2,N-Me-Phe4, Gly5-ol]-enkephalin (DAMGO), affects the two-pore domain K+ channel (K2P) current in rat SG neurons using a slice whole-cell patch clamp technique. Also we confirmed which subtypes of K2P channels... -
Effects of hydrogen peroxide on voltage-dependent K+ currents in human cardiac fibroblasts through protein kinase pathways
HyemiBae, DongheeLee, Young-WonKim, JeongyoonChoi, HongJunLee, Sang-WookKim, TaehoKim, Yun-HeeNoh, Jae-HongKo, HyoweonBang, InjaLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.3 11 315-324 (10 pages)
inhibitors) did not block the H2O2-stimulating effect on BKCa currents. Using RT-PCR and western blot analysis, three subtypes of KCa channels were detected in HCFs: BKCa channels, small-conductance KCa (SKCa) channels, and intermediate-conductance KCa (IKCa) channels. In the annexin V/propidium iodide assay, apoptotic changes in HCFs increased in response to H2O2, but IbTX decreased H2O2-induced apoptosis. These data suggest that among the VDKCs of HCFs, H2O2 only enhances BKCa currents through... -
Comparison of electrophysiological effects of calcium channel blockers on cardiac repolarization
Hyang-AeLee, Sung-AeHyun, Sung-GurlPark, Ki-SukKim, SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.1 15 119-127 (9 pages)
both APD50 and APD90 already at 1 μM whereas NIC and AML shortened APD50 but not APD90 up to 30 μM. According to ion channel studies, NIC and AML concentration-dependently inhibited IKr and IKs while ISR had only partial inhibitory effects (<50% at 30 μM). Inhibition of INa was similarly observed in the three CCBs. Since the IKr and IKs mainly contribute to cardiac repolarization, their inhibition by NIC and AML could compensate for the AP shortening effects due to the block of ICa. -
cAMP induction by ouabain promotes endothelin-1 secretion via MAPK/ERK signaling in beating rabbit atria
Li-qunPeng, PingLi, Qiu-liZhang, LanHong, Li-pingLiu, XunCui, Bai-riCui 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.1 2 9-14 (6 pages)
inhibitor for reverse mode of Na+-Ca2+ exchangers (NCX), but did not by L-type Ca2+ channel blocker nifedipine (1.0 μmol/L) or protein kinase A (PKA) selective inhibitor H-89 (3.0 μmol/L). Ouabain also enhanced atrial intracellular cAMP production in response to forskolin and theophyline (100.0 μmol/L), an inhibitor of phosphodiesterase, potentiated the ouabain-induced increase in cAMP. Ouabain and 8-Bromo-cAMP (0.5 μmol/L) markedly increased atrial ET-1 secretion, which was blocked by H-89... -
Scutellarein Reduces Inflammatory Responses by Inhibiting Src Kinase Activity
NakYoonSung, Mi-YeonKim, JaeYoulCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.5 7 441-450 (10 pages)
cells; similarly, NF-κB nuclear translocation was inhibited by SCT. Moreover, the phosphorylation levels of various upstream signaling enzymes involved in NF-κB activation were decreased by SCT treatment in LPS-treated RAW264.7 cells. Finally, SCT strongly inhibited Src kinase activity and also inhibited the autophos-phorylation of overexpressed Src. Therefore, our data suggest that SCT can block the inflammatory response by directly inhibiting Src kinase activity linked to NF-κB activation. -
The Critical Roles of Zinc: Beyond Impact on Myocardial Signaling
SungRyulLee, SuJinNoh, JuliusRyanPronto, YuJeongJeong, HyoungKyuKim, InSungSong, ZhelongXu, HyogYoungKwon, SeChanKang, Eun-HwaSohn, KyungS 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 12 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.5 1 389-400 (12 pages)
Zinc has been considered as a vital constituent of proteins, including enzymes. Mobile reactive zinc (Zn2+) is the key form of zinc involved in signal transductions, which are mainly driven by its binding to proteins or the release of zinc from proteins, possibly via a redox switch. There has been growing evidence of zinc’s critical role in cell signaling, due to its flexible coordination geometry and rapid shifts in protein conformation to perform biological reactions. The importance and... -
Streptozotocin Diabetes Attenuates the Effects of Nondepolarizing Neuromuscular Relaxants on Rat Muscles
LinaHuang, DanChen, ShitongLi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.6 3 461-468 (8 pages)
The hypothesis of this study was that diabetes-induced desensitization of rat soleus (SOL) and extensor digitorum longus (EDL) to non-depolarizing muscle relaxants (NDMRs) depends on the stage of diabetes and on the kind of NDMRs. We tested the different magnitude of resistance to vecuronium, cisatracurium, and rocuronium at different stages of streptozotocin (STZ)-induced diabetes by the EDL sciatic nerve-muscle preparations, and the SOL sciatic nerve-muscle preparations from rats after 4 and... -
Inhibitory Effects of Ginsenoside-Rb2 on Nicotinic Stimulation-Evoked Catecholamine Secretion
Hyo-JeongLim, Hyun-YoungLee, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.5 12 431-439 (9 pages)
The aim of the present study was to investigate whether ginsenoside-Rb2 (Rb2) can affect the secretion of catecholamines (CA) in the perfused model of the rat adrenal medulla. Rb2 (3∼30 μM), perfused into an adrenal vein for 90 min, inhibited ACh (5.32 mM)-evoked CA secretory response in a dose- and time-dependent fashion. Rb2 (10 μM) also time-dependently inhibited the CA secretion evoked by DMPP (100 μM, a selective neuronal nicotinic receptor agonist) and high K+ (56 mM, a direct membrane... -
Effects of Lubiprostone on Pacemaker Activity of Interstitial Cells of Cajal from the Mouse Colon
Han-YiJiao, DongHyunKim, JungSukKi, KwonHoRyu, SeokChoi, JaeYeoulJun 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.4 9 341-346 (6 pages)
GW627368, respectively) did not block the response to lubiprostone. L-NG-nitroarginine methyl ester (L-NAME, an inhibitor of nitric oxide synthase) and 1H-[1,2,4]oxadiazolo[4,3,-a]quinoxalin-1-one (ODQ, an inhibitor of guanylate cyclase) did not block the response to lubiprostone. In addition, tetraethylammonium (TEA, a voltage-dependent potassium [K＋] channel blocker) and apamin (a calcium [Ca2＋]-dependent K＋ channel blocker) did not block the response to lubiprostone. However, glibenclamide... -
Ginger and Its Pungent Constituents Non-Competitively Inhibit Serotonin Currents on Visceral Afferent Neurons
ZhenhuaJin, GoeunLee, SojinKim, Cheung-SeogPark, YongSeekPark, Young-HoJin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.2 9 149-153 (5 pages)
Nausea and emesis are a major side effect and obstacle for chemotherapy in cancer patients. Employ of antiemetic drugs help to suppress chemotherapy−induced emesis in some patients but not all patients. Ginger, an herbal medicine, has been traditionally used to treat various kinds of diseases including gastrointestinal symptoms. Ginger is effective in alleviating nausea and emesis, particularly, for cytotoxic chemotherapy drug−induced emesis. Ginger-mediated antiemetic effect has... -
Multiple Effects of a Novel Epothilone Analog on Cellular Processes and Signaling Pathways Regulated by Rac1 GTPase in the Human Breast Cancer Cells
HongZhang, FanAn, LiTang, RongguoQiu 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 12 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.2 4 109-120 (12 pages)
The epothilones are a class of microtubule inhibitors that exhibit a strong antitumor activity. UTD2 is a novel epothilone analog generated by genetic manipulation of the polyketide biosynthetic gene cluster. This study investigated the effects of UTD2 on the actin cytoskeleton and its critical regulators, and the signaling pathways which are essential for cell motility, growth and survival in MCF-7 breast cancer cells. Results showed that UTD2 inhibited the cellular functions of actin... -
DA-6034 Induces [Ca2+]i Increase in Epithelial Cells
Yu-MiYang, SoonhongPark, HyeWonJi, Tae-imKim, EungKweonKim, KyungKooKang, DongMinShin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.2 1 89-94 (6 pages)
DA-6034, a eupatilin derivative of flavonoid, has shown potent effects on the protection of gastric mucosa and induced the increases in fluid and glycoprotein secretion in human and rat corneal and conjunctival cells, suggesting that it might be considered as a drug for the treatment of dry eye. However, whether DA-6034 induces Ca2+ signaling and its underlying mechanism in epithelial cells are not known. In the present study, we investigated the mechanism for actions of DA-6034 in Ca2+... -
Potassium Currents in Isolated Deiters' Cells of Guinea Pig
JongWooChung, EuiCholNam, WonTaeKim, JaeBoumYoum, ChaeHunLeem 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.6 10 537-546 (10 pages)
Deiters' cells are the supporting cells in organ of Corti and are suggested to play an important role in biochemical and mechanical modulation of outer hair cells. We successfully isolated functionally different K+ currents from Deiters’ cells of guinea pig using whole cell patch clamp technique. With high K+ pipette solution, depolarizing step pulses activated strongly outward rectifying currents which were dose-dependently blocked by clofilium, a class III anti-arrhythmic K+ channel blocker.... -
Effects of Histamine on Cultured Interstitial Cells of Cajal in Murine Small Intestine
ByungJooKim, YoungKyuKwon, EuiyongKim, InsukSo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.2 6 149-156 (8 pages)
with U-73122 (a phospholipase C inhibitor) or 5-fluoro-2-indolyl des-chlorohalopemide (FIPI; a phospholipase D inhibitor) blocked histamine-induced membrane depolarizations in ICCs. On the other hand, KT5720 (a protein kinase A inhibitor) did not block histamine-induced membrane depolarization. These results suggest that histamine modulates pacemaker potentials through H1 receptor-mediated pathways via external Ca2+ influx and Ca2+ release from internal stores in a PLC and PLD dependent manner. -
Acute Hypoxia Activates an ENaC-like Channel in Rat Pheochromocytoma (PC12) Cells
YeonJuBae, Jae-ChealYoo, NammiPark, DawonKang, JaeheeHan, EunmiHwang, Jae-YongPark, Seong-GeunHong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.1 9 57-64 (8 pages)
Cells can resist and even recover from stress induced by acute hypoxia, whereas chronic hypoxia often leads to irreversible damage and eventually death. Although little is known about the response(s) to acute hypoxia in neuronal cells, alterations in ion channel activity could be preferential. This study aimed to elucidate which channel type is involved in the response to acute hypoxia in rat pheochromocytomal (PC12) cells as a neuronal cell model. Using perfusing solution saturated with 95% N2... -
Sustained K＋ Outward Currents are Sensitive to Intracellular Heteropodatoxin2 in CA1 Neurons of Organotypic Cultured Hippocampi of Rats
Sung-CherlJung, Su-YongEun 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.5 9 343-348 (6 pages)
reduction of amplitudes were observed in sustained currents but not in transient currents. This indicates the non-specificity of HpTX2 effects on Kv4 family. Compared with the effect of cytosolic 4-AP to block transient currents, it is possible that cytosolic HpTX2 is pharmacologically specific to sustained currents in CA1 neurons. These results suggest that distinctive actions of HpTX2 inside and outside of neurons are very efficient to selectively reduce specific K+ outward currents. -
The Safety and Pharmacokinetics of Cyanidin-3-Glucoside after 2-Week Administration of Black Bean Seed Coat Extract in Healthy Subjects
SangilJeon, SeunghoonHan, JongtaeLee, TaegonHong, Dong-SeokYim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.4 4 249-253 (5 pages)
We analyzed the pharmacokinetics of C3G on data from twelve subjects, after 2-week multiple dosing of black bean (Phaseolus vulgaris, Cheongjakong-3-ho) seed coat extract, using the mixed effect analysis method (NONMEM, Ver. 6.2), as well as the conventional non-compartmental method. We also examined the safety and tolerability. The PK analysis used plasma concentrations of the C3G on day 1 and 14. There was no observed accumulation of C3G after 2-week multiple dosing of black bean seed coat... -
TRPC-Mediated Current Is Not Involved in Endocannabinoid-Induced Short-Term Depression in Cerebellum
WonseokChang, JooMinPark, JunKim, SangJeongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.2 9 139-144 (6 pages)
It has been reported that activation of metabotropic glutamate receptor 1 (mGluR1) can mediate endocannabinoid-induced short-term depression of synaptic transmission in cerebellar parallel fiber (PF)-Purkinje cell (PC) synapse. mGluR1 has signaling pathways involved in intracellular calcium increase which may contribute to endocannabinoid release. Two major mGluR1-evoked calcium signaling pathways are known: (1) slow-kinetic inward current carried by transient receptor potential canonical (TRPC)... -
A Computational Model of the Temperature-dependent Changes in Firing Patterns in Aplysia Neurons
NamGyuHyun, Kwang-HoHyun, Kwang-BeomHyun, Jin-HeeHan, KyungminLee, Bong-KiunKaang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 12 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.6 8 371-382 (12 pages)
We performed experiments using Aplysia neurons to identify the mechanism underlying the changes in the firing patterns in response to temperature changes. When the temperature was gradually increased from 11oC to 31oC the firing patterns changed sequentially from the silent state to beating, doublets, beating-chaos, bursting-chaos, square-wave bursting, and bursting-oscillation patterns. When the temperature was decreased over the same temperature range, these sequential changes in the firing... -
The Protective Effect of Epigallocatechin-3 Gallate on Ischemia/ Reperfusion Injury in Isolated Rat Hearts: An ex vivo Approach
ChengShiPiao, Do-SungKim, Ki-ChanHa, Hyung-RyongKim, Han-JungChae, Soo-WanChae 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.5 2 259-266 (8 pages)
The aim of this study was to evaluate the preventive role of epigallocatechin-3 gallate (EGCG, a derivative of green tea) in ischemia/reperfusion (I/R) injury of isolated rat hearts. It has been suggested that EGCG has beneficial health effects, including prevention of cancer and heart disease, and it is also a potent antioxidant. Rat hearts were subjected to 20 min of normoxia, 20 min of zero-flow ischemia and then 50 min of reperfusion. EGCG was perfused 10 min before ischemia and during the...
