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High-Order QAM에 적합한 반송파 동기회로 설계 - I부. 넓은 주파수 포착범위를 가지는 위상검출기 설계 및 분석
김기윤, 조병학, 최형진, Kim. Ki-Yun, Cho. Byung-Hak, Choi. Hyung-Jin 대한전자공학회 電子工學會論文誌. Journal of the Institute of Electronics Engineers of Korea. TC, 통신 7 Pages
대한전자공학회 電子工學會論文誌. Journal of the Institute of Electronics Engineers of Korea. TC, 통신 2001, Vol.38 No.4 11-17 (7 pages)
논문에서는 High-Order QAM(Quandrature Amplitude Modulation)을 적용하는 모뎀에서 강인하고 넓은 범위의 주파수 포착 범위를 가지는 극성판단(Polarity Decision) 반송파 동기용 PD(Phase Detector) 알고리즘을 제안하고 이에 대한 평균 출력특성(S-curve)과 분산특성을 수학적으로 유도하여 기존의 DD(Decision Directed)방식과 비교 분석한다. 기존의 DD 방식의 선형영역은 256 QAM의 경우 $3.5^{circ}{sim}3.5^{circ}$ 이었으나 제안한 알고리즘의 선형영역은 ${gamma}-17.9$에서 $36^{circ}{sim}36^{circ}$ 의 넓은 구간을 가진다.... -
NecroX-5 exerts anti-inflammatory and anti-fibrotic effects via modulation of the TNFα/Dcn/TGFβ1/Smad2 pathway in hypoxia/reoxygenation-treated rat hearts
VuThiThu, HyoungKyuKim, LeThanhLong, ToThanhThuy, NguyenQuangHuy, SoonHaKim, NariKim, KyungSooKo, ByoungDooRhee, JinHan 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.3 10 305-314 (10 pages)
of tumor necrosis factor alpha (TNFα), TGFβ1, and pSmad2, and markedly decreased Dcn expression levels, were observed in LPS-stimulated H9C2 cells. Interestingly, NecroX-5 supplementation effectively attenuated the increased expression levels of TNFα, TGFβ1, and pSmad2, as well as the decreased expression of Dcn. Thus, our data demonstrate potential anti-inflammatory and anti-fibrotic effects of NecroX-5 against cardiac HR injuries via modulation of the TNFα/Dcn/TGFβ1/Smad2 pathway. -
Modulation of Pituitary Somatostatin Receptor Subtype (sst1-5) mRNA Levels by Growth Hormone (GH)-Releasing Hormone in Purified Somatotropes
SeungjoonPark, HeesoonPark, MinaLee, SookjinSohn, EunheeKim, JeechangJung, LawrenceA.Frohman, RhondaD.Kineman 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.2 5 79-84 (6 pages)
We have previously reported that expression of the somatostatin receptor subtypes, sst1-5, is differentially regulated by growth hormone (GH)-releasing hormone (GHRH) and forskolin (FSK), in vitro. GHRH binds to membrane receptors selectively located on pituitary somatotropes, activates adenylyl cyclase (AC) and increases sst1 and sst2 and decreases sst5 mRNA levels, without significantly altering the expression of sst3 and sst4. In contrast FSK directly activates AC in all pituitary cell types... -
pH-dependent modulation of intracellular free magnesium ions with ion- selective electrodes in papillary muscle of guinea pig
Shang-Jin Kim, In-Gook Cho, Hyung-Sub Kang, Jin-Shang Kim 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2006, 제 7권 제 1호 5 31-36 (6 pages)
A change in pH can alter the intracellular concentration of electrolytes such as intracellular Ca2+ and Na+ ([Na+]i) that are important for the cardiac function.For the determination of the role of pH in the cardiac magnesium homeostasis, the intracellular Mg 2+ concentration ([Mg 2+]i), membrane potential and contraction in the papillary muscle of guinea pigs using ion-selective electrodes changing extracellular pH ([pH]o)or intracellular pH ([pH ]i )were measured in this study. A high... -
Calcium Ions are Involved in Modulation of Melittin-induced Nociception in Rat: II. Effect of Calcium Chelator
HongKeeShin, KyungHeeLee, ChulHyunCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.6 1 297-302 (6 pages)
Melittin, a major component of bee venom, produces a sustained decrease in mechanical threshold, and an increase in spontaneous flinchings and paw thickness, which are characteristics similar to those induced by whole bee venom. Melittin-induced nociception has been known to be modulated by the changes in the activity of excitatory amino acid receptors, voltage-dependent calcium channels, cyclooxygenase and serotonin receptors. The present study was undertaken to investigate the role of calcium... -
Calcium Ions are Involved in Modulation of Melittin-induced Nociception in Rat: I. Effect of Voltage-gated Calcium Channel Antagonist
HongKeeShin, KyungHeeLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.5 6 255-262 (8 pages)
Melittin-induced nociceptive responses are mediated by selective activation of capsaicin-sensitive primary afferent fibers and are modulated by excitatory amino acid receptor, cyclooxygenase, protein kinase C and serotonin receptor. The present study was undertaken to investigate the peripheral and spinal actions of voltage-gated calcium channel antagonists on melittin-induced nociceptive responses. Changes in mechanical threshold and number of flinchings were measured after intraplantar (i.pl.)... -
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)
The present investigation tested the hypothesis that the activation of protein kinase G (PKG) leads 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... -
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)
To investigate the possible involvement of outward potassium (K+) 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... -
Cell proliferation and neuroblast differentiation in the dentate gyrus of high-fat diet-fed mice are increased after rosiglitazone treatment
Dae Young Yoo, Woosuk Kim, Dae Won Kim, Sung Min Nam, Hyo Young Jung, Jong Whi Kim, Choong Hyun Lee, Jung Hoon Choi, Moo-Ho Won, 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 1호 3 27-33 (7 pages)
In this study, we determined how rosiglitazone (RSG) differentially affected hippocampal neurogenesis in mice fed a low-fat diet (LFD) or high-fat diet (HFD; 60% fat). LFD and HFD were given to the mice for 8 weeks. Four weeks after initiating the LFD and HFD feeding, vehicle or RSG was administered orally once a day to both groups of mice. We measured cell proliferation and neuroblast differentiation in the subgranular zone of the dentate gyrus using Ki67 and doublecortin (DCX), respectively,... -
High fat diet confers vascular hyper-contractility against angiotensin II through upregulation of MLCK and CPI-17
JeeInKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.1 12 99-106 (8 pages)
Obesity is a critical risk factor for the hypertension. Although angiotensin II (Ang II) in obese individuals is known to be upregulated in obesity-induced hypertension, direct evidence that explains the underlying mechanism for increased vascular tone and consequent increase in blood pressure (BP) is largely unknown. The purpose of this study is to investigate the novel mechanism underlying Ang II-induced hyper-contractility and hypertension in obese rats. Eight-week old male Sprague-Dawley... -
Relaxant Effect of Spermidine on Acethylcholine and High K+- induced Gastric Contractions of Guinea-Pig
YoungChulKim, JaeHoonSim, Woong-Choi, ChanHyungKim, Ra-YoungYou, Wen-XieXu, SangJinLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.2 4 59-64 (6 pages)
In our previous study, we found that spermine and putrescine inhibited spontaneous and acetylcholine (ACh)-induced contractions of guinea-pig stomach via inhibition of L-type voltage- dependent calcium current (VDCCL). In this study, we also studied the effect of spermidine on mechanical contractions and calcium channel current (IBa), and then compared its effects to those by spermine and putrescine. Spermidine inhibited spontaneous contraction of the gastric smooth muscle in a... -
Digital Modulation Types Recognition using HOS and WT in Multipath Fading Environments
박철순, Park. Cheol-Sun 대한전자공학회 電子工學會論文誌. Journal of the Institute of Electronics Engineers of Korea. CI, 컴퓨터 8 Pages
대한전자공학회 電子工學會論文誌. Journal of the Institute of Electronics Engineers of Korea. CI, 컴퓨터 2008, Vol.45 No.5 102-109 (8 pages)
본 논문은 다중경로 페이딩 채널 조건에서 사전 정보없이 입사하는 디지털 신호 10종의 변조형태를 고정확도로 인식할 수 있도록 고차 통계량(HOS)과 웨이브릿 변환(WT)에서 선정된 특징(key features)을 이용한 견실한 하이브리드 분류기를 제안하였다. 제안된 분류기는 실제 시나리오를 고려하여 다양한 다중경로 환경(즉, 농촌, 소도시, 도심지역)에서 측정된 채널 데이터를 이용하였다. 실제 측정된 다중경로 페이딩 채널 데이터를 이용하여 Holdout-like 방식으로 총 15개 채널 중 9개 채널은 트레이닝용으로 사용하고, 나머지 6개... -
Modulation of Inwardly Rectifying K+ Channel by Intracellular and Extracellular pH in Bovine Aortic Endothelial Cells
Kyu-SangPark, InDeokKong, JoongWooLee, HyewhonRhim, YoungChulKim, InsukSo, KiWhanKim, 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.5 4 255-260 (6 pages)
The effects of intracellular and extracellular pH on the inwardly rectifying K (IRK) channel of the bovine aortic endothelial cells (BAECs) were examined using whole-cell patch-clamp technique. The IRK current, efficiently blocked by Ba2 (200μM), is the most prominent membrane current in BAECs, which mainly determines the resting membrane potential. The expression of Kir2.1 was observed in BAECs using reverse transcriptase-polymerase chain reaction (RT-PCR) analysis.... -
Modulation of Quorum Sensing in Acyl homoserine Lactone Producing or Degrading Tobacco Plants Leads to Alteration of Induced Systemic Resistance Elicited by the Rhizobacterium Serratia marcescens 90 166
한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2013, 29권 2호 8 182-192 (11 pages)
Numerous root-associated bacteria (rhizobacteria) are known to elicit induced systemic resistance (ISR) in plants. Bacterial cell-density-dependent quorum sensing (QS) is thought to be important for ISR. Here, we investigated the role of QS in the ISR elicited by the rhizobacterium, Serratia marcescens strain 90?166, in tobacco. Since S. marcescens 90?166 produces at least three QS signals, QS-mediated ISR in strain 90?166 has been difficult to understand. Therefore, we investigated the ISR... -
Hardware Implementation of Pulse Code Modulation Speech Compression Algorithm
Geetam Singh Tomar 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 8 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2012, 제 2권 제 1호 3 17-24 (8 pages)
loss. This paper served to demonstrate that the algorithmic delay (latency) of the Pulse Code Modulation (PCM) speech compression algorithm which has originally been implemented in software can be significantly reduced by implementation in hardware. The PCM speech compression algorithm is first implemented, verified to demonstrate equivalence and then validated by comparing the latency of the hardware-implemented speech compression algorithm with that of an existing software implementation. -
Modulation of Electrophysiology by Transcranial Direct Current Stimulation in Psychiatric Disorders
Minah Kim, Yoo Bin Kwak, Tae Young Lee, Jun Soo Kwon 대한신경정신의학회 Psychiatry Investigation 11 Pages
대한신경정신의학회 Psychiatry Investigation 2018, 제 15권 제 5호 2 434-444 (11 pages)
Objective Transcranial direct current stimulation (tDCS) is a non-invasive neuromodulation technique increasingly used to relieve symptoms of psychiatric disorders. Electrophysiologic markers, such as electroencephalography (EEG) and event-related potentials (ERP), have high temporal resolution sensitive to detect plastic changes of the brain associated with symptomatic improvement following tDCS application. Methods We performed systematic review to identify electrophysiological markers that... -
Hepatoprotective effects of mushroom extracts in N-methyl-N-nitrosourea treated Balb/c mice
Srishti Ramsaha, Vidushi S. Neergheen Bhujun, Shalini Verma, Ashok Kumar, Rahul Kumar Bharty, Amit Kumar Chaudhary, Poornima Sharma, Pr 대한수의학회 대한수의학회 학술대회발표집 2 Pages
대한수의학회 대한수의학회 학술대회발표집 추계학술심포지움 373 394-395 (2 pages)
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Comparison of allele-specific PCR, created restriction-site PCR, and PCR with primer-introduced restriction analysis methods used for screening complex vertebral malformation carriers in Holstein cattle
Kozet Avanus, Ahmet Altınel 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 4호 9 465-470 (6 pages)
Complex vertebral malformation (CVM) is an inherited, autosomal recessive disorder of Holstein cattle. The aim of this study was to compare sensitivity, specificity, positive and negative predictive values, accuracy, and rapidity of allele-specific polymerase chain reaction (AS-PCR), created restriction-site PCR (CRS-PCR), and PCR with primer-introduced restriction analysis (PCR-PIRA), three methods used in identification of CVM carriers in a Holstein cattle population. In order to screen for... -
Effect of canine mesenchymal stromal cells overexpressing heme oxygenase-1 in spinal cord injury
Seung Hoon Lee, Yongsun Kim, Daeun Rhew, Ahyoung Kim, Kwang Rae Jo, Yongseok Yoon, Kyeung Uk Choi, Taeseong Jung, Wan Hee Kim, O 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 3호 15 377-386 (10 pages)
Heme oxygenase-1 (HO-1) is a stress-responsive enzyme that modulates the immune response and oxidative stress associated with spinal cord injury (SCI). This study aimed to investigate neuronal regeneration via transplantation of mesenchymal stromal cells (MSCs) overexpressing HO-1. Canine MSCs overexpressing HO-1 were generated by using a lentivirus packaging protocol. Eight beagle dogs with experimentally-induced SCI were divided into GFP-labeled MSC (MSC-GFP) and HO-1-overexpressing MSC... -
Bordetella bronchiseptica antigen enhances the production of Mycoplasma hyopneumoniae antigen-specific immunoglobulin G in mice
Seol-Hwa Yim, Tae-Wook Hahn, Hong-Gu Joo 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 3호 9 327-332 (6 pages)
We previously demonstrated that Bordetella (B.) bronchiseptica antigen (Ag) showed high immunostimulatory effects on mouse bone marrow cells (BMs) while Mycoplasma (M.) hyopneumoniae Ag showed low effects. The focus of this study was to determine if B. bronchiseptica Ag can enhance the M. hyopneumoniae Ag-specific immune response and whether the host’s immune system can recognize both Ags. MTT assay results revealed that each or both Ags did not significantly change BM metabolic activity. Flow... -
Neuronal maturation in the hippocampal dentate gyrus via chronic oral administration of Artemisa annua extract is independent of cyclooxygenase 2 signaling pathway in diet-induced obesity mouse model
Hye Kyung Baek, Pan Soo Kim, Ji Ae Song, Dong-Hwa Choi, Do Eun Kim, Seung Il Oh, Sang-Kyu Park, Sung-Jo Kim, Ki-Duk Song, In Koo 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 2호 1 119-127 (9 pages)
Recently, we reported that Artemisia annua (AA) has anti-adipogenic properties in vitro and in vivo. Reduction of adipogenesis by AA treatment may dampen systemic inflammation and protect neurons from cytokine-induced damage. Therefore, the present study was undertaken to assess whether AA increases neuronal maturation by reducing inflammatory responses, such as those mediated by cyclooxygenase 2 (COX-2). Mice were fed normal chow or a high-fat diet with or without chronic daily oral... -
Immunomodulatory effects of human amniotic membrane-derived mesenchymal stem cells
Jung Won Kang, Hye Cheong Koo*, Sun Young Hwang, Sung Keun Kang, Jeong Chan Ra, Moon Han Lee, Yong Ho Park* 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2012, 제 13권 제 1호 4 23-31 (9 pages)
Human amniotic membrane-derived mesenchymal stem cells (hAM-MSCs) are capable of differentiating into several lineages and possess immunomodulatory properties. In this study, we investigated the soluble factor-mediated immunomodulatory effects of hAM-MSCs. Mitogen-induced peripheral blood mononuclear cell (PBMC) proliferation was suppressed by hAM-MSCs in a dose-dependent manner as well as hAM-MSC culture supernatant. Moreover, interferon-gamma and interleukin (IL)-17 production significantly... -
Elm tree bark extract inhibits HepG2 hepatic cancer cell growth via pro-apoptotic activity
Tae Myoung Kim, Sang-Kyung Shin, Tae-Wang Kim, So-Young Youm, Dae Joong Kim, Byeongwoo Ahn* 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2012, 제 13권 제 1호 2 7-13 (7 pages)
Control of inflammation is widely accepted as an important strategy for cancer chemoprevention. Anti-inflammatory effects of bark extracts of elm tree (BEE) have been amply reported. Therefore, BEE may be a good candidate cancer chemopreventive agent. Considering the high incidence of hepatic cancer and limited therapeutic approaches for treating this disease, it is important to develop liver cancer-specific chemopreventive agents. To evaluate the chemopreventive potential of BEE, we... -
The stress of weaning influences serum levels of acute-phase proteins, iron-binding proteins, inflammatory cytokines, cortisol, and leukocyte subsets in Holstein calves
Myung-Hoo Kim, Ji-Young Yang, Santi Devi Upadhaya, Hyun-Jun Lee, Cheol-Heui Yun, Jong K. Ha 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 2호 7 151-158 (8 pages)
< 0.05) at 1 and 3 DPW compared to levels observed before weaning. Weaning significantly (p < 0.05) decreased the percentage of CD25 T cells in the peripheral blood. In conclusion, weaning stress affected the NE:LY ratio along with the levels of acute phase proteins, lactoferrin, cortisol, and inflammatory cytokines in the peripheral blood of calves. Weaning stress may induce an acute phase response possibly through the elevation of cortisol production and modulation of inflammatory cytokines. -
The expressions of HSP70 and αB-crystallin in myocarditis associated with foot-and-mouth disease virus in lambs
Mustafa Yavuz Gulbahar*, Yonca Betil Kabak, Mehmet Onder Karayigit, Murat Yarim, Tolga Guvenc, Unal Parlak 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 1호 10 65-73 (9 pages)
This study describes the expression of heat shock protein70 (HSP70) and alpha-basic-crystallin (α-BC) and their association with apoptosis and some related adaptor proteins in the pathogenesis of foot-and-mouth disease virus (FMDV)-induced myocarditis in lambs. HSP70 was generally overexpressed in the myocardial tissues and inflammatory cells of FMDV-induced myocarditis with differential accumulation and localization in same hearts when compared to non-foot-and-mouth disease control hearts.... -
Hens immunized with live attenuated Salmonella strains expressing virulence-associated genes in avian pathogenic Escherichia coli passively transfer maternal antibodies to chicks
Gayeon Won , John Hwa Lee 대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 10 Pages
대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 2016, 제 56권 제 3호 6 167-176 (10 pages)
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Time-dependent proteomic and genomic alterations in Toll-like receptor-4-activated human chondrocytes: increased expression of lamin A/C and annexins
SeungHeeHa, HyoungKyuKim, NguyenThiTuyetAnh, NariKim, KyungSooKo, ByoungDooRhee, JinHan 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 16 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.5 8 531-546 (16 pages)
Activation of Toll-like receptor-4 (TLR-4) in articular chondrocytes increases the catabolic compartment and leads to matrix degradation during the development of osteoarthritis. In this study, we determined the proteomic and genomic alterations in human chondrocytes during lipopolysaccharide (LPS)-induced inflammation to elucidate the underlying mechanisms and consequences of TLR-4 activation. Human chondrocytes were cultured with LPS for 12, 24,and 36 h to induce TLR-4 activation. The... -
EGCG Blocked Phenylephrin-Induced Hypertrophy in H9C2 Cardiomyocytes, by Activating AMPK-Dependent Pathway
YiCai, LiZhao, YuanQin, Xiao-QianWu 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.3 3 203-210 (8 pages)
AMP-activated protein kinase (AMPK) is a key regulator of energy metabolism. Previous studies have shown that activation of AMPK results in suppression of cardiac myocyte hypertrophy via inhibition of the p70S6 kinase (p70S6K) and eukaryotic elongation factor-2 (eEF2) signaling pathways. Epigallocatechin-3-gallate (EGCG), the major polyphenol found in green tea, possesses multiple protective effects on the cardiovascular system including cardiac hypertrophy. However, the molecular mechanisms has... -
The Effect of Metformin Treatment on CRBP-I Level and Cancer Development in the Liver of HBx Transgenic Mice
Jo-HeonKim, Md.MorshedulAlam, DoekBaePark, MoonjaeCho, Seung-HongLee, You-JinJeon, Dae-YeulYu, TaeDuKim6, HaYoungKim, ChungGuCho, DaeHoLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.5 12 455-461 (7 pages)
Retinoids regulate not only various cell functions including proliferation and differentiation but also glucose and lipid metabolism. After we observed a marked up-regulation of cellular retinol-binding protein-I (CRBP-I) in the liver of hepatitis B virus x antigen (HBx)-transgenic (HBx Tg) mice which are prone to hepatocellular carcinoma (HCC) and fatty liver, we aimed to evaluate retinoid pathway, including genes for the retinoid physiology, CRBP-I protein expression, and retinoid levels, in... -
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... -
Requirement of Pretone by Thromboxane A2 for Hypoxic Pulmonary Vasoconstriction in Precision-cut Lung Slices of Rat
SuJungPark, HaeYoungYoo, HyeJinKim, , , JinKyoungKim, Yin-HuaZhang, SungJoonKim, 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.1 9 59-64 (6 pages)
Hypoxic pulmonary vasoconstriction (HPV) is physiologically important response for preventing mismatching between ventilation and perfusion in lungs. The HPV of isolated pulmonary arteries (HPV-PA) usually require a partial pretone by thromboxane agonist (U46619). Because the HPV of ventilated/perfused lungs (HPV-lung) can be triggered without pretone conditioning, we suspected that a putative tissue factor might be responsible for the pretone of HPV. Here we investigated whether HPV can be also... -
Ischemia/reperfusion Lung Injury Increases Serum Ferritin and Heme Oxygenase-1 in Rats
Yoon-YubPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 7 181-187 (7 pages)
Intestinal ischemia/reperfusion (I/R) is one of common causes of acute lung injury (ALI). Early and accurate diagnosis of patients who are like to develop serious acute respiratory distress syndrome (ARDS) would give a therapeutic advantage. Ferritin and heme oxygenase-1 (HO-1) are increased by oxidative stress and are potential candidates as a predictive biomarker of ARDS. However, the mechanisms responsible for the increases of ferritin and HO-1, and their relationship to ALI, are unclear. In... -
Mechanical Hyperalgesia Induced by Blocking Calcium-activated Potassium Channels on Capsaicin-sensitive Afferent Fiber
KyungHeeLee, HongKeeShin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.5 8 215-219 (5 pages)
Small and large conductance Ca2+-activated K+ (SKCa and BKCa) channels are implicated in the modulation of neuronal excitability. We investigated how changes in peripheral KCa channel activity affect mechanical sensitivity as well as the afferent fiber type responsible for KCa channel-induced mechanical sensitivity. Blockade of SKCa and BKCa channels induced a sustained decrease of mechanical threshold which was significantly attenuated by topical application of capsaicin onto afferent fiber and... -
Anti-ischemic Effect of Polygala Tenuifolia in Isolated Rat Heart
Chang-WonKang, Jong-HoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.3 3 89-95 (7 pages)
Polygala tenuifolia (PT) is one of the most well-known traditional herbal medicines in Korea which is commonly used for the treatment of cardiovascular symptoms. The anti-ischemic effects of PT in isolated rat heart was investigated by analyzing changes in blood pressure, aortic flow, coronary flow, and cardiac output. And, its underlying mechanism was examined by quantitating intracellular calcium content in rat neonatal cardiomyocytes. Rats were divided into two groups: an ischemia-induced... -
Nitric Oxide Synthase Mediates Carbon Monoxide-Induced Stimulation of L-type Calcium Currents in Human Jejunal Smooth Muscle Cells
InjaLim, JihyunYun, SeungtaeKim, SoonchulMyung, TaehoKim, HyoweonBang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.3 7 161-166 (6 pages)
Exogenous carbon monoxide (0.2%) increases L-type calcium (Ca2) current in human jejunal circular smooth muscle cells. The stimulatory effect of carbon monoxide (CO) on L-type Ca2 current is inhibited by pre-application of L-NNA, a classical competitive inhibitor of nitric oxide synthase (NOS) with no significant isoform selectivity (Lim, 2003). In the present study, we investigated which isoform of NOS affected CO induced stimulation of L-type Ca2 current in human jejunal... -
Heterogeneity of the SR-dependent Inward Na+-Ca2+ Exchange Current in the Heavily Ca2+-buffered Rat Ventricular Myocytes
Kyung-BongYoon, Sung-WanAhn, ChangMannKo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.2 6 101-110 (10 pages)
Voltage-sensitive release mechanism was pharmacologically dissected from the Ca2-induced Ca2 release in the SR Ca2 release in the rat ventricular myocytes patch-clamped in a whole-cell mode. SR Ca2 release process was monitored by using forward-mode Na-Ca2 exchange after restriction of the interactions between Ca2 from SR and Na-Ca2 exchange within micro-domains with heavy cytosolic Ca2 buffering with 10 mM BAPTA. During... -
Altered Secretory Pattern of Pancreatic Enzymes and Gastrointestinal Hormones in Streptozotocin-induced Diabetic Rats
Myung-JunKim, GyeongRyulRyu, Sae-YoungYi, DoSikMin, Duck-JooRhie, ShinHeeYoon, SangJuneHahn, Myung-SukKim, Yang-HyeokJo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.6 6 311-317 (7 pages)
This study was performed to investigate the pancreatic exocrine dysfunction in streptozotocin- induced diabetic rats. Changes in pancreatic enzymes secretion and in pancreatic enzymes content were observed. The output and the tissue content of amylase were significantly reduced in diabetic rats, while the output and the content of lipase were increased. Plasma secretin and cholecystokinin (CCK) concentrations of diabetic rats were significantly increased compared to those of normal rats. The... -
Interactions between Estradiol-17β-BSA and Calcitropic Hormones in Ca2+ Uptake in Renal Proximal Tubule Cells
HoJaeHan, YeunHeeLee, EunJuSeo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.5 5 261-268 (8 pages)
The aim of the present study was to investigate the interaction of estradiol-17β-bovine serum albumin (E2-BSA) and calcitropic hormones, such as parathyroid hormone, calcitonin, and vitamin D, in regulation of Ca2 uptake in primary cultured renal proximal tubule cells. Statistically significant increase in Ca2 uptake was found from 2 hours after E2-BSA (109 M) treatment, while estradiol-17β (109 M) did not affect. Treatment of the cells with E2-BSA (109 M)... -
Hemorrhage- and Restraint-induced Analgesia in Male and Female Conscious Rats
SungYunOh, HeeSeokHan, DongKukAhn, JaeSikPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.6 3 555-563 (9 pages)
It is well known that stress induces analgesia. This study was designed to demonstrate the stress-induced analgesia by employing hemorrhage and restraint and to investigate its mechanism and sex difference. The degree of pain was assessed by measuring the magnitude of jaw opening reflex produced by a noxious electrical stimulation in the dental pulp and by measuring the latency to withdraw the tail from a heat ray. Restraint showed an antinociceptive response. A significant increase in pain... -
Characteristic Intracelluar Response to Lidocaine And MK-801 of Hippocampal Neurons An In Vivo Intracellular Neuron Recording Study
Byung-JuChoiJin-HwaCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.3 4 297-305 (9 pages)
This study used in vivo intracellular recording in rat hippocampus to evaluate the effect of lidocaine and MK-801 on the membrane properties and the synaptic responses of individual neurons to electrical stimulation of the commissural pathway. Cells in control group typically fired in a tonic discharge mode with an average firing frequency of 2.4⁑0.9 Hz. Neuron in MK-801 treated group (0.2 mg/kg, i.p.) had an average input resistance of 32.8⁑5.7 MΩ and a membrane time constant of... -
Effect of K+-channel Blockers on the Muscarinic- and A1-adenosine- Receptor Coupled Regulation of Electrically Evoked Acetylcholine Release in the Rat Hippocampus
ByungSikYu, DoKyungKim, BongKyuChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.2 2 147-154 (8 pages)
completely abolished in Ca2+-free medium, but these were recoverd in low Ca2+ medium. And the effects of K+-channel blockers in low Ca2+ medium were inhibited by Mg2+ (4 mM) and abolished by 0.3 ՌM tetrodotoxin (TTX). These results suggest that the changes in TEA-sensitive potassium channel permeability and the consequent limitation of Ca2+ influx are partly involved in the presynaptic modulation of the evoked ACh-release by muscarinic and A1-adenosine receptors of the rat hippocampus. -
정신분열병 환자에서 Haloperidol이 99m-Tc-ECD SPECT로 측정한 국소뇌혈류량에 미치는 영향
천근아, 이종두, 민성길, 김세주, 안석균 대한신경정신의학회 신경정신의학 12 Pages
대한신경정신의학회 신경정신의학 1999, 제 38권 제 4호 18 861-872 (12 pages)
연구목적： 정신분열병 환자에서의 뇌혈류량은 약리학적 상태를 포함한 다양한 요소들에 의하여 영향을 받는다. 항정신 병약물이 국소뇌혈류량에 미치는 영향에 관한 많은 연구가 행해져 왔으나 항정신병약물의 종류와 노출기간, 약물용량의 차이로 인해 다양하고도 상반된 결과를 보여왔다. 따라서 본 연구에서는 정신분열병 환자에서 항 정신병약물의 종류와 노출기간을 통제한 상태에서 약물 투여시 국소뇌혈류량의 변화를 관찰하고자 하였다. 방 법： 항정신병약물 비노출(antipsychotic drug-naive) 정신분열병 환자 18명과... -
Effect of K+-channel Blockers on the A1-adenosine Receptor-Coupled Regulation of Electrically-Evoked Norepinephrine Release in the Rat Hippocampus
최봉규(Bong Kyu Choi), 김상훈(Sang Hoon Kim) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 3호 2 301-310 (10 pages)
Since it has been reported that the depolarization-induced NE release is inhibited by activation of presynaptic A1-adenosine heteroreceptor in hippocampus, a large body of experimental data on the post-receptor mechanism of this process has been accumulated. But, the post-receptor mechanism of presynaptic A1-adenosine receptor on the NE release has not been clearly elucidated yet. Therefore, it was attempted to clarify the participation of K+-channel in the post-receptor mechanisms of the... -
Cellular Mechanism of Nicotine-mediated Intracellular Calcium Homeostasis in Primary Culture of Mouse Cerebellar Granule Cells
김원기(Won-Ki Kim), 배영숙(Young-Sook Pae) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 1호 2 13-22 (10 pages)
Intracellular calcium concentration ([Ca2+]i) may play a crucial role in a variety of neuronal functions. Here we report that in primary culture of mouse cerebellar granule cells nicotinic acetylcholine receptors (nAChRs) are expressed in a specific developmental stage and involved in the regulation of intracellular calcium homeostasis. Nicotine-mediated calcium responses were measured using 45Ca2+ or fluorometrically using the calcium-sensitive fluorescent dye fura-2. Maximal uptake of 45Ca2+... -
Effects of cGMP on the Contractility and Ca Movement in the Aorta of Normotensive Wistar-Kyoto Rats and Spontaneously Hypertensive Rats
Park, Hae-Kun, Jeon, Byeong-Hwa, Kim, Se-Hoon, Kim, Hoe-Suk, Chang, Seok-Jong 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 2호 8 181-190 (10 pages)
Endothelium-derived relaxing factor (EDRF) activates guanylate cyclase which mediates the formation of cGMP from GTP in vascular smooth muscle. It is well known that endothelium-dependent relaxation is impaired in spontaneously hypertensive rats (SHR). However, it is still unknown whether the impaired endothelium-dependent relaxation in SHR results from the reduced release of EDRF or from the decrease of vascular response to EDRF. We investigated the effects of cGMP on the contractility and Ca... -
Alteration of Genetic Make-up in Karnal Bunt Pathogen (Tilletia indica) of Wheat in Presence of Host Determinants
한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2015, 31권 2호 1 97-107 (11 pages)
Alteration of genetic make-up of the isolates and monosporidial strains of Tilletia indica causing Karnal bunt (KB) disease in wheat was analyzed using DNA markers and SDS-PAGE. The generation of new variation with different growth characteristics is not a generalized feature and is not only dependant on the original genetic make up of the base isolate/monosporidial strains but also on interaction with host. Host determinant(s) plays a significant role in the generation of variability and the... -
Design and Simulation of Foundation Technology for Zigbee-based Smart Grid Home Network System using OPNET Simulation
Jun-Ho Huh, Seung-Mo Je, Kyungryong Seo 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 9 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2015, 제 5권 제 4호 10 81-89 (9 pages)
The Internet of Things (IoT) and the Smart Grid both are being discussed as the technologies that would dominate Korean IT industry by 2020. The PLC, Zigbee, NFC, ANT, Wi-Fi, Bluetooth and RFID are considered to be the foundation technologies for the Smart Grid and in this paper, we propose a Zigbee-based Smart Grid Home Network System. A comparative analysis has been carried out by performing additional Mobile WiMAX-based simulations with respect to the research paper published in the... -
40 Hz와 80 Hz의 변조주파수에서 기·골도 청성지속반응역치와 순음청력역치 비교
한정, 조소현, 조수진, 구호림 한국청각언어재활학회 Audiology and Speech Research 4 Pages
한국청각언어재활학회 Audiology and Speech Research 2005, 제 1권 제 1호 7 40-43 (4 pages)
같은 객관적인 청력검사(objective hearing test)의 한계점 보완하고, 주관적인 청력검사(subjective hearing test)가 어 려운 성인 환자나 난청의 조기발견 및 중재(early hearing detection and interpretation, EHDI)의 중요성이 강조되면서 영·유아의 주파수별 청력역치를 비교하기 위해서 고안된 방법 중 하나이다. ASSRs에 영향을 미치는 여러 가지 요소 중 변조주파수(modulation frequency)는 변조빈도에 해당하는 의미로 변조주파수가 증가할수록 ASSRs의 진폭(amplitude)은 감소하지만, 특정 지점인 40 Hz와 90 Hz 부근에서는...
