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전체 선택해제
총 173건 검색
본문검색 결과만 보기
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Linear Prediction Analysis and Quantization for the Conjugate-Structure Algebraic-Code-Excited Linear-Prediction Speech Compression Algorithm
Marcus L. George 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 12 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2012, 제 2권 제 1호 5 33-44 (12 pages)
of the Linear Prediction (LP) Analysis and Quantization component of the Conjugate-Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP) speech compression algorithms. The LP Analysis and Quantization units were implemented in hardware using Xilinx 11.1 ISE, after which ITU-T test vectors were used to determine whether they were equivalent implementations of the LP Analysis and Quantization. The algorithmic delays of hardware-implementations were obtained via simulation using Modelsim XE... -
Association of Grit and Body Composition with Fatigue and Burnout among Shift-work Nurses
Baek MinJung, Han Kihye 한국기초간호학회 Journal of Korean Biological Nursing Science 9 Pages
한국기초간호학회 Journal of Korean Biological Nursing Science 2022, Volume 24, No 3 1 141-149 (9 pages)
aimed to investigate the effects of grit and body composition on fatigue and burnout in shift-working nurses. Methods: A descriptive cross-sectional design using self-report questionnaires was employed. Data were collected between February and April 2021 from 192 shift-working nurses in 22 units of C tertiary hospitals. Of the 192, 175 nurses returned their completed questionnaires (return rate: 91.1%). The participants objectively measured their body composition for three consecutive days using... -
Linear Complexities of Sequences over Unknown Symbol Sets and Constructions of Sequences over CF($p^k$) whose Characteristic Polynomials are over GF($p^{k}$ )
Hong. Yun-Pyo, Eun. Yu-Chang, Kim. Jeong-Heon, Song. Hong-Yeop 한국통신학회 한국통신학회논문지. The Journal of Korea Information and Communications Society. 통신이론 및 시스템 9 Pages
한국통신학회 한국통신학회논문지. The Journal of Korea Information and Communications Society. 통신이론 및 시스템 2003, Vol.28 443-451 (9 pages)
본 논문에서는 임의의 심볼 집합 상의 수열의 선형복잡도를 정의한다. 또한 본 논문에서는 기저의 선택과 상관없이 자신의 GF($p^{k}$ ) 상의 R-tuple 수열이 자신과 같은 특성다항식을 갖는 $p^{R}$-ary 수열의 특성을 밝히며 이는 결과적으로 GF(p) 상의 특성다항식을 갖는 $p^{+}$ -ary 수열의 생성을 가능하게 한다. 마지막으로 심볼이 GF(p) 상의 R-tuple로 표현될 때 기저의 선택과 무관하게 유일한 특성다항식을 갖는 $p^{R}$-ary 수열의 특성을 밝힌다. -
Integrated analysis of microRNA and mRNA expressions in peripheral blood leukocytes of Warmblood horses before and after exercise
Hang-Ah Kim, Myung-Chul Kim, Na-Yon Kim, Doug-Young Ryu, Hong-Seok Lee, Yongbaek Kim 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 1호 13 99-106 (8 pages)
Exercise capacity is a valuable trait in horses, and it has been used as a horse selection criterion. Although exercise affects molecular homeostasis and adaptation in horses, the mechanisms underlying these effects are not fully described. This study was carried out to identify changes in the blood profiles of microRNAs (miRNAs) and mRNAs induced by exercise in horse leukocytes. Total RNAs isolated from the peripheral blood leukocytes of four Warmblood horses before and after exercise were... -
Evaluation of the ureteral jet in dogs by using color Doppler ultrasonography
Hyunjung Oh, Seongsoo Kim, Suyeon Kim, Jeosoon Lee, Sookyung Yun, Junghee Yoon, Joohyun Jung, Mincheol Choi 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 3호 17 399-406 (8 pages)
Ureteral jets are the result of a forceful ejection of urine from the vesicoureteral junction into the urinary bladder. By using color Doppler ultrasonography (US), we aimed to identify distinct ureteral jets in dogs, provide insight into ureteral obstruction, and facilitate study of urodynamics and vesicoureteric sphincter function via pulsed Doppler US. Color Doppler US was applied to detect urinary flow from the right ureteral orifices in eight healthy beagles. Under anesthesia, 0.9% saline... -
Antigenic characterization of classical swine fever virus YC11WB isolates from wild boar
Seong-In Lim, Yong Kwan Kim, Ji-Ae Lim, Song-Hee Han, Hee-Suk Hyun, Ki-Sun Kim, Bang-Hun Hyun, Jae-Jo Kim, In-Soo Cho, Jae-Young 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 2호 10 201-207 (7 pages)
Classical swine fever (CSF), a highly contagious disease that affects domestic pigs and wild boar, has serious economic implications. The present study examined the virulence and transmission of CSF virus strain YC11WB (isolated from a wild boar in 2011) in breeding wild boar. Virulence of strain YC11WB in domestic pigs was also examined. Based on the severe clinical signs and high mortality observed among breeding wild boar, the pathogenicity of strain YC11WB resembled that of typical acute... -
Effects of induced endometritis on uterine blood flow in cows as evaluated by transrectal Doppler sonography
Letizia Debertolis, Gaetano Mari, Barbara Merlo, Sabine Merbach, Heinz-Adolf Schoon, Eleonora Iacono, Heinrich Bollwein 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2016, 제 17권 제 2호 8 189-197 (9 pages)
This study was conducted to evaluate the effects of induced endometritis on uterine blood flow in cows. Transrectal Doppler sonography was performed on uterine arteries of six cyclic cows before and for 4 days after inducing acute endometritis by intrauterine infusion of 720 mg of policresulen, and for 4 days of the following estrous cycle. Time-averaged maximum velocity (TAMV) increased (p < 0.001) and pulsatility index (PI) decreased (p < 0.0001) within 1 h of policresulen... -
Magnetic nanoparticle based purification and enzyme-linked immunosorbent assay using monoclonal antibody against enrofloxacin
Nam-Gun Kim, Myeong-Ae Kim, Young-Il Park, Tae-Sung Jung, Seong-Wan Son, ByungJae So, Hwan-Goo Kang 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 4호 6 431-437 (7 pages)
Monoclonal anti-enrofloxacin antibody was prepared for a direct competitive enzyme-linked immunosorbent assay (ELISA) and purification system using monoclonal antibody (mAb) coupled magnetic nanoparticles (MNPs). The IC50 values of the developed mAb for enrofloxacin (ENR), ciprofloxacin, difloxacin, sarafloxacin, pefloxacin, and norfloxacin were 5.0, 8.3, 9.7, 21.7, 36.0, and 63.7 ng/mL, respectively. The lowest detectable level of ENR was 0.7 ng/mL in the prepared ELISA system. To validate the... -
β-irradiation (Ho patch)-induced skin injury in mini-pigs: effects on NF-κB and COX-2 expression in the skin
Joong-Sun Kim, Kyung-Jin Rhim, Won-Seok Jang, Sun-Joo Lee, Yeonghoon Son, Seung-Sook Lee, Sunhoo Park, Sang Moo Lim 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 1호 1 1-9 (9 pages)
In the present study, the detrimental effect of β-emission on pig skin was evaluated. Skin injury was modeled in mini-pigs by exposing the animals to 50 and 100 Gy of β-emission delivered by Ho patches. Clinicopathological and immunohistochemical changes in exposed skin were monitored for 18 weeks after β-irradiation. Radiation induced desquamation at 2∼4 weeks and gradual repair of this damage was evident 6 weeks after irradiation. Changes in basal cell density... -
Isolation, in vitro propagation, genetic analysis, and immunogenic characterization of an Ehrlichia canis strain from southeastern Brazil
Rosiane Nascimento Alves*, Susana Elisa Rieck, Carlos Ueira-Vieira, Marcelo Bahia Labruna, Marcelo Emílio Beletti 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 2호 10 241-248 (8 pages)
Amplification of the 16S rRNA gene from a blood sample obtained from a dog in southeastern Brazil was used to confirm a naturally acquired Ehrlichia (E.) canis infection. Following isolation and culturing of the new bacterial strain called Uberlândia, partial sequences of the dsb and p28 genes were obtained. The dsb partial sequence of the novel strain was 100% similar to dsb gene sequences of E. canis obtained from different geographic areas around the world. Conversely, the p28... -
Survival of hypoxic human mesenchymal stem cells is enhanced by a positive feedback loop involving miR-210 and hypoxia-inducible factor 1
Woochul Chang, Chang Youn Lee, Jun-Hee Park, Moon-Seo Park, Lee-So Maeng, Chee Soon Yoon, Min Young Lee, Ki-Chul Hwang*, Yong-An 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 1호 10 69-76 (8 pages)
The use of mesenchymal stem cells (MSCs) has emerged as a potential new treatment for myocardial infarction. However, the poor viability of MSCs after transplantation critically limits the efficacy of this new strategy. The expression of microRNA-210 (miR-210) is induced by hypoxia and is important for cell survival under hypoxic conditions. Hypoxia increases the levels of hypoxia inducible factor-1 (HIF-1) protein and miR-210 in human MSCs (hMSCs). miR-210 positively regulates HIF-1a activity.... -
Assessment of glomerular filtration rate with dynamic computed tomography in normal Beagle dogs
Jinhwa Chang, Sujin Kim, Joohyun Jung, Heechun Lee, Hojung Choi, Dongwoo Chang, Youngwon Lee, Junghee Yoon, Mincheol Choi* 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 4호 13 393-399 (7 pages)
The objective of our study was to determine individual and global glomerular filtration rates (GFRs) using dynamic renal computed tomography (CT) in Beagle dogs. Twenty-four healthy Beagle dogs were included in the experiment. Anesthesia was induced in all dogs by using propofol and isoflurane prior to CT examination. A single slice of the kidney was sequentially scanned after a bolus intravenous injection of contrast material (iohexol, 1 mL/kg, 300 mgI/mL). Time attenuation curves were created... -
Characterization of Chinook head salmon embryo phenotypes of infectious salmon anemia virus by real-time RT-PCR
Khalid Munir 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2006, 제 7권 제 2호 13 167-176 (10 pages)
We have previously described the development of a onetube SYBR Green real-time RT-PCR assay for the detection and quantitation of infectious salmon anemia virus (ISAV) in various biological samples. The twofold aim of the present study was to verify that the optimized SYBR Green real-time RT-PCR conditions could detect ISAV isolates of different geographic origins, and to analyze the growth patterns of the selected ISAV isolates in the Chinook head salmon embryo (CHSE) -214 cells by this assay... -
Laminitis in Przewalski horses kept in a semireserve
Klaus-Dieter Budras, Klaus Scheibe, Bianca Patan, Wolf J. Streich, Kabsu Kim 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2001, 제 2권 제 1호 1 1-7 (7 pages)
Semireserves were created by the European Conserva-tion Project for scientific research in preparation for rein-troduction in the wilderness. They are defined as enclosures large enough to carry a group of Przewalski horses throughout the year without any additional feed-ing. The semireserve offers diverse opportunities for sig-nificant scientific research. As part of a general screening program, the hoof development in a group of Przewalski horses was investigated in the semireserve Schorfheide... -
Improvement of indirect enzyme-linked immunosorbent assay for detection of Japanese encephalitis virus antibodies in swine sera
Dong-kun Yang , Ha-hyun Kim , Hyun-ye Jo , Seung Heon Lee , Sang-ho Jang , Sang-oh Lee , Sung-suk Choi , In-soo Cho 대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 6 Pages
대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 2017, 제 57권 제 1호 5 31-36 (6 pages)
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백서 하악골의 기능적 측방편위가 하악골 성장에 미치는 영향
박관식(Kwan-Sik PARK), 경희문(Hee-Moon KYUNG), 성재현(Jae-Hyun Sung) 대한치과교정학회 The Korean Journal of Orthodontics 13 Pages
대한치과교정학회 The Korean Journal of Orthodontics 1997, 제 27권 제 1호 9 105-117 (13 pages)
본 연구는 기능적 교합장애에 의한 하아골 측방편위가 하악골의 성장에 미치는 영향고 교합장애 제거후 나타나는 하악골의 성장양상을 알아 보기 위하여 생후 4주령의 웅성 백서의 상악우측, 하악좌측 절치를 2주 및 4주간 절단한 실험군과 4주간 절치절단을 시행하고 2주간 절단을 중지한 실험군에서 하악골계측 및 과두연골의 조직학적 변화를 관찰하여 다음과 같은 결론을 얻었다. 1. 실험 2주군에서 좌측의 하악골장경, 과두장경, 하악골고경, 과두단면적은 우측및 성장군에 비해 작은 경향을 보였고, 우측의 하악골장경,... -
Fuller와 Bown의 교사염려모델에 기초한 예비 초등교사의 음악교수에 대한 염려 조사
최미영(Mi Young Choi) 한국음악교육학회 음악교육연구 18 Pages
한국음악교육학회 음악교육연구 2016, 제 45권 제 2호 11 275-292 (18 pages)
본 연구의 목적은 Fuller와 Bown의 교사염려모델을 사용하여 예비 초등교사의 음악교수에 대한 염려를 알아보는데 있다. 연구대상은 교육대학교 음악교육 심화전공 4학년 예비교사 15명이다. 연구 자료로는 동료학생 대상의 모의 음악수업과 교육실습 음악수업에서 각각 사용된 교수학습 지도안, 동료교수 음악수업과 교육실습 음악수업에서 촬영한 수업 DVD, 그리고 각각의 수업에서 수업을 마친 후 예비교사가 기록한 자기 평가지 및 연구자와의 비구조화된 인터뷰가 사용되었다. 예비 초등교사의 자기 평가지와 전사한 인터뷰의 내용은... -
시각장애 음악전공자들의 회고를 바탕으로 한 음악 교수방법론 탐색
김미정(Mi Jung Kim), 박휴용(Hyu Yong Park) 한국음악교육학회 음악교육연구 32 Pages
한국음악교육학회 음악교육연구 2013, 제 42권 제 3호 6 151-182 (32 pages)
본 논문은 시각장애를 가진 음악가 혹은 학생들이 음악을 가르치고 익히는 과정에 활용하는 네 가지의 교수수단, 즉 청각입력을 통한 암기, 구두지도, 촉각정보, 그리고 기술적 도구들에 대해 논의하였다. 본 논문은 시각장애인이 이러한 교수수단을 통해 음악을 익히는 과정을 매개(mediation), 숙달(mastery)과 전유(appropriation)의 개념적 틀을 통해 분석하였으며, 이 네 가지 방법들이 매개수단(mediational means)으로써 음악을 배우고 익히는데 활용되고 있음을 논의하였다. 저자들은 참여연구를 통해서 서울의 한 맹학교... -
The stages of psychological adaptation in response to short term body weight support treadmill training in persons post-stroke: A case study
Lee Jung-Eun, Ko Man-Soo 한국교육치료학회 교육치료연구 10 Pages
한국교육치료학회 교육치료연구 2013, Vol.5 No.2 1 1-10 (10 pages)
This study was to generate a description of the psychosocial adaptation process and to identify the contributing factors to their adaptation through locomotor training in a person with chronic stroke. The participant was an 79 year old female with a left sub-cortical ischemic stroke, who reported a depression. Pre and post interviews were analyzed using a grounded theory method to identify the stages of psychological adaptation in response to the progression of 4 weeks BWSTT. The participant... -
Patterns of Psychosocial Adaptation to Chronic Illness and Disability
Jeong Han Kim, Norman L. Berven Yves, Ambroise Summer, Ibarra Tae Sun Kim 한국교육치료학회 교육치료연구 22 Pages
한국교육치료학회 교육치료연구 2010, Vol.2 No.2 1 1-22 (22 pages)
This study examined the patterns of psychosocial adaptation to chronic illness and disability(CID), defined in terms of subjective well-being and coping strategies in a sample of 100 individuals with various CID conditions. Cluster analysis revealed four distinct clusters of respondents, suggesting a varying degree of psychosocial adaptation. These clusters were labeled succumbing(n=9), surviving(n=40), resilient(n=41), and thriving(n=10). Our findings indicate that resilient and succumbing... -
Intracellular calcium-dependent regulation of the sperm-specific calcium-activated potassium channel, hSlo3, by the BKCa activator LDD175
TharakaDarshanaWijerathne, JihyunKim, DongkiYang, KyuPilLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.2 12 241-249 (9 pages)
leftward shift its activation voltage. NS1619, which acts intracellularly to modulate hSlo1 gating, attenuated hSlo3 K+ currents, whereas LDD175 increased this current and induced membrane potential hyperpolarization. LDD175-induced potentiation was not associated with a change in the half-activation voltage at different intracellular pHs (pH 7.3 and pH 8.0) in the absence of intracellular Ca2+. In contrast, elevation of intracellular Ca2+ dramatically enhanced the LDD175-induced leftward shift... -
Activation of K+ channel by 1-EBIO rescues the head and neck squamous cell carcinoma cells from Ca2+ ionophore-induced cell death
MingZheYin, Seok-WooPark, , TaeWookKang, KyungSooKim, , , HaeYoungYoo6, JunhoLee, J.HunHah, , MyungHunSung, , SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.1 4 25-33 (9 pages)
Ion channels in carcinoma and their roles in cell proliferation are drawing attention. Intracellular Ca2+ ([Ca2+]i)-dependent signaling affects the fate of cancer cells. Here we investigate the role of Ca2+-activated K+ channel (SK4) in head and neck squamous cell carcinoma cells (HNSCCs) of dif-ferent cell lines; SNU-1076, OSC-19 and HN5. Treatment with 1 μM ionomycin induced cell death in all the three cell lines. Whole-cell patch clamp study suggested common expressions of Ca2+-activated... -
Hypericum Perforatum Decreased Hippocampus TNF-α and Corticosterone Levels with No Effect on Kynurenine/Tryptophan Ratio in Bilateral Ovariectomized Rats
WesamMEl-Bakly, AmanyHHasanin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.3 6 233-239 (7 pages)
The present study was designed to investigate the effect Hypericum Perforatum (HP), on behavioral changes, corticosterone, TNF-α levels and tryptophan metabolism and disposition in bilateral ovariectomized rats compared to 17α-ethinylestradiol. Behavioral analysis by measuring immobility time in forced swimming test and open field test, serum and hippocampal corticosterone and TNF-α along with hippocampal kynurenine/tryptophan ratio were determined in mature ovariectomized rats treated orally... -
The Downregulation of Somatic A-Type K+ Channels Requires the Activation of Synaptic NMDA Receptors in Young Hippocampal Neurons of Rats
Moon-SeokKang, Yoon-SilYang, Seon-HeeKim, Joo-MinPark, Su-YongEun, Sung-CherlJung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.2 7 135-141 (7 pages)
significant reduction of the somatic IA peak. Additionally, the gating property of IA channels was also sensitive to the activation of synaptic NMDA receptors, showing the hyperpolarizing shift in inactivation kinetics. These results suggest that synaptic LTP possibly potentiates somatic excitability via downregulating IA channels in expression and gating kinetics. The consequential changes of somatic excitability following the activity-dependent modulation of synaptic responses may be a series... -
Inhibitory Effects of Ginsenoside Metabolites, Compound K and Protopanaxatriol, on GABAC Receptor-Mediated Ion Currents
Byung-HwanLee, Sung-HeeHwang, Sun-HyeChoi, Hyeon-JoongKim, Joon-HeeLee, Sang-MokLee, YunGyongAhn, Seung-YeolNah 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.2 3 127-132 (6 pages)
Ginsenosides, one of the active ingredients of Panax ginseng, show various pharmacological and physiological effects, and they are converted into compound K (CK) or protopanaxatriol (M4) by intestinal microorganisms. CK is a metabolite derived from protopanaxadiol (PD) ginsenosides, whereas M4 is a metabolite derived from protopanaxatriol (PT) ginsenosides. The Ճ-aminobutyric acid receptorC (GABAC) is primarily expressed in retinal bipolar cells and several regions of the brain. However,... -
Bile Acid Inhibition of N-type Calcium Channel Currents from Sympathetic Ganglion Neurons
HyeKyungLee, KyoungHwaLee, Eui-SicCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.1 4 25-30 (6 pages)
Under some pathological conditions as bile flow obstruction or liver diseases with the enterohepatic circulation being disrupted, regurgitation of bile acids into the systemic circulation occurs and the plasma level of bile acids increases. Bile acids in circulation may affect the nervous system. We examined this possibility by studying the effects of bile acids on gating of neuronal (N)-type Ca2＋ channel that is essential for neurotransmitter release at synapses of the peripheral and central... -
Inhibitory Actions of HERG Currents by the Immunosuppressant Drug Cyclosporin A
SeungHoLee, SangJuneHahn, GyesikMin, JimokKim, Su-HyunJo, HanChoe, BokHeeChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.5 7 291-298 (8 pages)
The effect of cyclosporin A (CsA), an immunosuppressant, on human ether-a-go-go-related gene (HERG) channel as it is expressed in human embryonic kidney cells was studied using a whole-cell, patch-clamp technique. CsA inhibited the HERG channel in a concentration-dependent manner, with an IC50 value and a Hill coefficient of 3.17ՌM and 0.89, respectively. Pretreatment with cypermethrine, a calcineurin inhibitor, had no effect on the CsA-induced inhibition of the HERG channel. The... -
Inhibitory Effects of Quercetin on Muscle-type of Nicotinic Acetylcholine Receptor-Mediated Ion Currents Expressed in Xenopus Oocytes
Byung-HwanLee, Tae-JoonShin, Sung-HeeHwang, Sun-HyeChoi, JiyeonKang, Hyeon-JoongKim, Chan-WooPark, Soo-HanLee, Seung-YeolNah 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.4 2 195-201 (7 pages)
The flavonoid quercetin is a low molecular weight compound generally found in apple, gingko, tomato, onion and other red-colored fruits and vegetables. Like other flavonoids, quercetin has diverse pharmacological actions. However, relatively little is known about the influence of quercetin effects in the regulation of ligand-gated ion channels. Previously, we reported that quercetin regulates subsets of nicotinic acetylcholine receptors such as Ձ3Ղ4, Ձ7 and Ձ9Ձ10.... -
Quercetin Inhibits α3β4 Nicotinic Acetylcholine Receptor-Mediated Ion Currents Expressed in Xenopus Oocytes
Byung-HwanLee, Sung-HeeHwang, Sun-HyeChoi, Tae-JoonShin, JiyeonKang, Sang-MokLee, Seung-YeolNah 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.1 3 17-22 (6 pages)
Quercetin mainly exists in the skin of colored fruits and vegetables as one of flavonoids. Recent studies show that quercetin, like other flavonoids, has diverse pharmacological actions. However, relatively little is known about quercetin effects in the regulations of ligand-gated ion channels. In the previous reports, we have shown that quercetin regulates subsets of homomeric ligand-gated ion channels such as glycine, 5-HT3A and Ձ7 nicotinic acetylcholine receptors. In the present study,... -
Effect of Modulation of hnRNP L Levels on the Decay of bcl-2 mRNA in MCF-7 Cells
Mi-HyunLim, Dong-HyoungLee, SeungEunJung, Dong-YeYoun, ChanSunPark, Jeong-HwaLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.1 3 15-20 (6 pages)
It has been shown that CA repeats in the 3'-untranslated region (UTR) of bcl-2 mRNA contribute the constitutive decay of bcl-2 mRNA and that hnRNP L (heterogenous nuclear ribonucleoprotein L) interacts with CA repeats in the 3'-UTR of bcl-2 mRNA, both in vitro and in vivo. The aim of this study was to determine whether the alteration of hnRNP L affects the stability of bcl-2 mRNA in vivo. Human breast carcinoma MCF-7 cells were transfected with hnRNP L-specific shRNA or hnRNP L-expressing vector... -
Mechanisms of Selective Antimicrobial Activity of Gaegurin 4
HeejeongKim, ByeongJaeLee, MunHanLee, SeongGeunHong, PanDongRyu 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.1 7 39-48 (10 pages)
Gaegurin 4 (GGN4), an antimicrobial peptide isolated from a Korean frog, is five times more potent against Gram-positive than Gram-negative bacteria, but has little hemolytic activity. To understand the mechanism of such cell selectivity, we examined GGN4-induced K＋ efflux from target cells, and membrane conductances in planar lipid bilayers. The K＋ efflux from Gram-positive M. luteus (2.5</SUP>Ռg/ml) was faster and larger than that from Gram-negative E. coli (75Ռg/ml), while... -
Intrinsic Gating in Inward Rectifier Potassium Channels (Kir2.1) with Low Polyamine Affinity Generated by Site Directed Mutagenesis
ISo, , IAshmole, HSoh, CSPark, PJSpencer, MLeyl, PRStanfield, 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 12 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.3 3 131-142 (12 pages)
We have studied mutant forms of Kir2.1 in which an aspartate residue (D172), important for gating by intracellular polyamines, is replaced by one of three basic residues (Arg, Lys or His). Such channels are highly selective for K+, but show inward rectification that is a shallow function of voltage compared with that found in wild type. This inward rectification occurs with a reduced affinity for spermine and persists in the absence of polyamines. Though the unitary current-voltage relation... -
Muscarinic Receptor Subtype Controlling the Carbachol-Induced Muscle Contraction in Guinea Pig Gastric Antrum
JongChulRhee, Dae-YongUhm, TongMookKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.2 4 105-111 (7 pages)
Stimulation of muscarinic receptors by carbachol (CCh) in the circular smooth muscle of the guinea pig gastric antrum causes muscle contraction. In the present study, muscarinic receptor subtype controlling the muscle contraction in response to CCh was studied using putative muscarinic receptor antagonists. Isometric force of the isolated circular muscle strips was measured in an organ bath. CCh contracted the muscle in a dose-dependent way, and each of the three muscarinic receptor...
