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Molecular Aspects of Organic Ion Transporters in the Kidney
SeokHoChaHitoshiEndou 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 16 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 1 107-122 (16 pages)
organic anion transporter (OAT), organic cation transporter (OCT), and organic anion-transporting polypeptide (oatp). Additional findings also suggested ATP-dependent organic ion transporters such as MDR1/P-glycoprotein and the multidrug resistance-associated protein (MRP) as efflux pump. The substrate specificity of these transporters is multispecific. These transporters also play an important role as drug transporters. Studies on their functional properties and localization provide information... -
Moderate Elevation of Extracellular K+ Concentration Induces Vasorelaxation in Isolated Rat, Rabbit and Human Cerebral Arteries Role of Na Pump and Ba-Sensitive Process
DongHoKim, SungJoonKim, SangJinLee, SungJinPark, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.6 7 705-714 (10 pages)
and humans. Addition of K (2∼10 mM) to the control solution induced vasorelaxations. These effects were inhibited by the pretreatment with both ouabain (10 ㄍM) and Ba2 (0.1∼0.3 mM) in the rat, but only with ouabain (10 ㄍM) in the rabbit and human. These results suggest that K-induced vasorelaxation occurs via the stimulation of electrogenic Na pump in the rabbit and human MCAs, while in the rat MCAs via the activation of both Na pump and Ba-sensitive process. -
Ca2+ Signalling in Endothelial Cells Role of Ion Channels
BerndNilius, FelixViana, MasahiroKamouchi, CristinaFasolato, JanEggermont, GuyDroogmans 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 13 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.2 1 133-145 (13 pages)
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Mouse Egg의 안정막전압과 Pump 활동에 대한 양이온의 효과
홍성근(Hong, Seong-Geun) 대한생리학회 대한생리학회지 8 Pages
대한생리학회 대한생리학회지 1989, 제 23권 제 1호 4 35-42 (8 pages)
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사람 적혈구막의 (Na＋+K+)-ATPase/Na+, K+ Pump의 Target Size
하종식(Hah, Jong-Sik), Jung, Chan Y. 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1985, 제 19권 제 1호 2 15-24 (10 pages)
Pump는 glycolytic enzymes과 complex를 이루고 있으리라는 보고도 있다. 우리는 이 실험에서 in situ상태의 사람 적혈구막(Na++K+)-ATPase의 분자량을 측정하기 위하여, 소위 말하는 ‘Target theory’를 radiation에 의한 ouabain sensitive한 Na+이동과, intact한 cells과 ghosts에서의 ATP가수분해능력의 inactivation data에 적용하였다. Intact한 cells은 cryoprotective agent의 존재하에서, ghosts는 직접적으로 액화질소의 용기속에 담고 온도를 -45℃에서 -50℃로 유지시키면서 1.5 MeV의 electron beam으로 조사한 후에 Pump의... -
혈관 긴장도 조절에 미치는 Na-K Pump에 관한 연구
김기환(Kim, Ki-Whan), 김전(Kim, Jun) 대한생리학회 대한생리학회지 12 Pages
대한생리학회 대한생리학회지 1982, 제 16권 제 1호 1 1-12 (12 pages)
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Overview on the Development of UHV Ion Pumps
Bonmassar. Luca 한국진공학회 韓國眞空學會誌 10 Pages
한국진공학회 韓國眞空學會誌 2006, Vol.15 No.3 231-240 (10 pages)
본 총설논문에서는 초고진공 이온펌프의 개발에 대한 고찰을 하였으며, 이온펌프의 동작원리와 특정 디자인에 대하여 설명하였다. 다양한 가스를 사용할 때의 이온펌프의 성능과 동작범위, 그리고 응용분야 등을 논의하였다. -
사람 및 흰쥐의 자궁근에서 Vanadate에 의한 수축에 미치는 외부 Calcium 및 Na-pump억제의 영향
정진섭(Jung, Jin-Sub), 한복기(Han, Bok-Ki), 우재석(Woo, Jae-Suk), 이상호(Lee, Sang-Ho) 대한생리학회 대한생리학회지 14 Pages
대한생리학회 대한생리학회지 1984, 제 18권 제 2호 2 125-138 (14 pages)
Na-Pump억제가 vanadate의 수축에 어떤 영향을 미치는 지를 밝히기 위해 본 실험을 시행하여 다음과 같은 곁과를 얻었다. 1) 흰쥐의 자궁근에서는 vanadate는 수축을 일으켜 5 X 10-4M에서 최대수축을 나타내었으며 사람의 자궁근이 흰쥐의 자중근에 비해 vanadate에 더 민감한 반응을 보였다. 2) Vanadate에 의한 수축은 Ca2+제거에 의해 완전히 억제되지 않았고 사람의 자궁근이 외부 Ca2+의 농도변화에 더 민감한 반응을 보였다. 3) Vanadate에 의한 수축은 verapamil농도를 증가시킴에 따 억제되었으며 100k에 극한 수축을 완전... -
Evaluation of endoscopically obtained duodenal biopsy samples from cats and dogs in an adapter-modified Ussing chamber
Isabelle Ruhnke*, John V. DeBiasio, Jan S. Suchodolski, Shelley Newman, Mark W. Musch, Jörg M. Steiner 대한수의학회 Journal of Veterinary Science 11 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 2호 17 297-307 (11 pages)
This study was conducted to evaluate an adapter-modified Ussing chamber for assessment of transport physiology in endoscopically obtained duodenal biopsies from healthy cats and dogs, as well as dogs with chronic enteropathies. 17 duodenal biopsies from five cats and 51 duodenal biopsies from 13 dogs were obtained. Samples were transferred into an adapter-modified Ussing chamber and sequentially exposed to various absorbagogues and secretagogues. Overall, 78.6% of duodenal samples obtained from... -
Simultaneous Determination of Various Macrolides by Liquid Chromatography/Mass Spectrometry
Youn-Hwan Hwang, Jong-Hwan Lim, Byung-Kwon Park and Hyo-In Yun 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2002, 제 3권 제 2호 7 103-108 (6 pages)
tylosin with LC/MS has been developed. Separation was performed on C18 reversed phase column. Mobile phase was gradiently flowed with 10 mM ammonium acetate and methanol. The mass spectrometer was run in the positive mode and selective ion monitoring mode. The molecular ions were [M] form at m/z 837.5 for erythromycin, at m/z 859.5 for roxithromycin, at m/z 494.2 for tiamulin and at m/z 916.7 for tylosin. Limits of detection were in the range from 0.001 to 0.01 microg/g lower than their MRLs. -
The clinical implication of sodium-potassium ratios in dogs
Son-Il Pak 대한수의학회 Journal of Veterinary Science 5 Pages
대한수의학회 Journal of Veterinary Science 2000, 제 1권 제 1호 9 61-65 (5 pages)
Although there have been substantial evidences on the usefulness of electrolytes for the diagnosis of disease, the evidences for a direct link between serum sodium and serum potassium in relation to a specific disease are very limited. This study was performed to investigate an association between diseases and Na:K ratios in dogs. From January 1997 to December 1999, a total of 39 cases with an Na:K ratio less than 27 were retrieved from the medical records of Veterinary Medical Teaching... -
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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Hydrogen peroxide attenuates refilling of intracellular calcium store in mouse pancreatic acinar cells
MiNaYoon, DongKwanKim, SeHoonKim, HyungSeoPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.2 11 233-239 (7 pages)
Intracellular calcium (Ca2+) oscillation is an initial event in digestive enzyme secretion of pancreatic acinar cells. Reactive oxygen species are known to be associated with a variety of oxidative stress-induced cellular disorders including pancreatitis. In this study, we investigated the effect of hydrogen peroxide (H2O2) on intracellular Ca2+ accumulation in mouse pancreatic acinar cells. Perfusion of H2O2 at 300 μM resulted in additional elevation of intracellular Ca2+ levels and... -
Calcium permeability of transient receptor potential canonical (TRPC) 4 channels measured by TRPC4-GCaMP6s
JuyeonKo, JongyunMyeong, DongkiYang, InsukSo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.1 16 133-140 (8 pages)
Conflicting evidence has been obtained regarding whether transient receptor potential cation channels (TRPC) are store-operated channels (SOCs) or receptor-operated channels (ROCs). Moreover, the Ca/Na permeability ratio differs depending on whether the current-voltage (I-V) curve has a doubly rectifying shape or inward rectifying shape. To investigate the calcium permeability of TRPC4 channels, we attached GCaMP6s to TRPC4 and simultaneously measured the current and calcium signals. A TRPC4... -
Participation of central GABAA receptors in the trigeminal processing of mechanical allodynia in rats
MinJiKim, YoungHongPark, KuiYeYang, JinSookJu, YongChulBae, SeongKyuHan, DongKukAhn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.1 8 65-74 (10 pages)
Here we investigated the central processing mechanisms of mechanical allodynia and found a direct excitatory link with low-threshold input to nociceptive neurons. Experiments were performed on male Sprague-Dawley rats weighing 230-280 g. Subcutaneous injection of interleukin 1 beta (IL-1β) (1 ng/10 μL) was used to produce mechanical allodynia and thermal hyperalgesia. Intracisternal administration of bicuculline, a gamma aminobutyric acid A (GABAA) receptor antagonist, produced mechanical... -
Hypoxic pulmonary vasoconstriction and vascular contractility in monocrotaline-induced pulmonary arterial hypertensive rats
HaeJinKim, HaeYoungYoo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.6 10 641-647 (7 pages)
Pulmonary arterial hypertension (PAH) is a progressive disease characterized by vascular remodeling of pulmonary arteries (PAs) and increased vascular resistance in the lung. Monocrotaline (MCT), a toxic alkaloid, is widely used for developing rat models of PAH caused by injury to pulmonary endothelial cells; however, characteristics of vascular functions in MCT-induced PAH vary and are not fully understood. Here, we investigated hypoxic pulmonary vasoconstriction (HPV) responses and effects of... -
Gintonin facilitates catecholamine secretion from the perfused adrenal medulla
Seung-YeolNa, Ki-HwanKim, Mi-SungChoi, Kang-SuHa, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.6 9 629-639 (11 pages)
The present study was designed to investigate the characteristics of gintonin, one of components isolated from Korean Ginseng on secretion of catecholamines (CA) from the isolated perfused model of rat adrenal gland and to clarify its mechanism of action. Gintonin (1 to 30 μg/ml), perfused into an adrenal vein, markedly increased the CA secretion from the perfused rat adrenal medulla in a dose-dependent fashion. The gintonin-evoked CA secretion was greatly inhibited in the presence of... -
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)
of numerous cellular functions, including the Na+-K+-ATPase (sodium pump). Ouabain, used in the treatment of several heart diseases, is known to increase cAMP levels but its effects on the atrium are not understood. The aim of the present study was to examine the effect of ouabain on the regulation of atrial cAMP production and its roles in atrial endothelin-1 (ET-1) secretion in isolated perfused beating rabbit atria. Our results showed that ouabain (3.0 μmol/L) significantly increased atrial... -
Extremely Low Frequency Magnetic Field Modulates the Level of Neurotransmitters
YoonHeeChung, YoungJooLee, HoSungLee, SuJinChung, CheolHeeLim, KeonWoongOh, UyDongSohn, EonSubPark, JiHoonJeong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.1 3 15-20 (6 pages)
This study was aimed to observe that extremely low frequency magnetic field (ELF-MF) may be relevant to changes of major neurotransmitters in rat brain. After the exposure to ELF-MF (60 Hz, 2.0 mT) for 2 or 5 days, we measured the levels of biogenic amines and their metabolites, amino acid neurotransmitters and nitric oxide (NO) in the cortex, striatum, thalamus, cerebellum and hippo-campus. The exposure of ELF-MF for 2 or 5 days produced significant differences in norepinephrine and vanillyl... -
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... -
Disappearance of Hypoxic Pulmonary Vasoconstriction and O2-Sen-sitive Nonselective Cationic Current in Arterial Myocytes of Rats Under Ambient Hypoxia
HaeYoungYoo, SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.5 13 463-468 (6 pages)
Acute hypoxia induces contraction of pulmonary artery (PA) to protect ventilation/perfusion mismatch in lungs. As for the cellular mechanism of hypoxic pulmonary vasoconstriction (HPV), hypoxic inhibition of voltage-gated K+ channel (Kv) in PA smooth muscle cell (PASMC) has been suggested. In addition, our recent study showed that thromboxane A2 (TXA2) and hypoxia-activated nonselective cation channel (INSC) is also essential for HPV. However, it is not well understood whether HPV is maintained... -
Neuroprotective Effects of AMP-Activated Protein Kinase on Scopolamine Induced Memory Impairment
Soo-JeongKim, Jun-HoLee, Hwan-SuckChung, Joo-HyunSong, JoohunHa, HyunsuBae 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.4 11 331-338 (8 pages)
AMP-activated protein kinase (AMPK), an important regulator of energy metabolism, is activated in response to cellular stress when intracellular levels of AMP increase. We investigated the neuroprotective effects of AMPK against scopolamine-induced memory impairment in vivo and glutamate-induced cytotoxicity in vitro. An adenovirus expressing AMPK wild type alpha subunit (WT) or a dominant negative form (DN) was injected into the hippocampus of rats using a stereotaxic apparatus. The AMPK... -
Influence of Fimasartan (a Novel AT1 Receptor Blocker) on Catecholamine Release in the Adrenal Medulla of Spontaneously Hypertensive Rats
Hyo-JeongLim, Seog-KiLee, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.1 14 99-109 (11 pages)
CA secretion evoked by Ang II, and cholinergic stimulation (both nicotininc and muscarinic receptors) as well as by membrane depolarization from the rat adrenal medulla. It seems that this inhibitory effect of fimasartan may be mediated by blocking the influx of both Na＋ and Ca2＋ through their ion channels into the rat adrenomedullary chromaffin cells as well as by inhibiting the Ca2＋ release from the cytoplasmic calcium store, which is relevant to AT1 receptor blockade without NO release. -
A Simple Dosing Scheme for Intravenous Busulfan Based on Retrospective Population Pharmacokinetic Analysis in Korean Patients
SangminChoe, GayeongKim, Hyeong-SeokLim, Sang-HeonCho, Jong-LyulGhim, JinAhJung, Un-JibKim, GyujeongNoh, Kyun-SeopBae, DonghoLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.4 7 273-280 (8 pages)
Busulfan is an antineoplastic agent with a narrow therapeutic window. A post-hoc population pharmacokinetic analysis of a prospective randomized trial for comparison of four-times daily versus once-daily intravenous busulfan was carried out to search for predictive factors of intravenous busulfan (iBu) pharmacokinetics (PK). In this study the population PK of iBu was characterized to provide suitable dosing recommendations. Patients were randomized to receive iBu, either as 0.8 mg/kg every 6 h... -
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... -
Intracellular Ca2＋ Mobilization and Beta-hexosaminidase Release Are Not Influenced by 60 Hz-electromagnetic Fields (EMF) in RBL 2H3 Cells
YeonHeeHwang, HoSunSong, HeeRaeKim, MyoungSooKo, JaeMinJeong, YongHoKim, JeongSooRyu, UyDongSohn, Yoon-MyoungGimm, SungHoMyung, SangSooSim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.5 10 313-317 (5 pages)
The effects of extremely low frequency electromagnetic fields (EMF) on intracellular Ca2＋ mobilization and cellular function in RBL 2H3 cells were investigated. Exposure to EMF (60 Hz, 0.1 or 1 mT) for 4 or 16 h did not produce any cytotoxic effects in RBL 2H3 cells. Melittin, ionomycin and thapsigargin each dose-dependently increased the intracellular Ca2＋ concentration. The increase of intracellular Ca2＋ induced by these three agents was not affected by exposure to EMF (60 Hz, 1 mT) for 4... -
A Computational Model of Cytosolic and Mitochondrial [Ca2＋] in Paced Rat Ventricular Myocytes
JaeBoumYoum, SeongWooChoi, ChangHanJang, HyoungKyuKim, ChaeHunLeem, NariKim, JinHan 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 23 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.4 5 217-239 (23 pages)
We carried out a series of experiment demonstrating the role of mitochondria in the cytosolic and mitochondrial Ca2＋ transients and compared the results with those from computer simulation. In rat ventricular myocytes, increasing the rate of stimulation (1∼3 Hz) made both the diastolic and systolic [Ca2＋] bigger in mitochondria as well as in cytosol. As L-type Ca2＋ channel has key influence on the amplitude of Ca2＋-induced Ca2＋ release, the relation between stimulus frequency and the... -
Inhibitory Effects of Olmesartan on Catecholamine Secretion from the Perfused Rat Adrenal Medulla
Hyo-JeongLim, Sang-YongKim, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.4 7 241-248 (8 pages)
The present sutdy aimed to determine whether olmesartan, an angiotensin II (Ang II) type 1 (AT1) receptor blocker, can influence the CA release from the isolated perfused model of the rat adrenal medulla. Olmesartan (5∼50ՌM) perfused into an adrenal vein for 90 min produced dose- and time-dependent inhibition of the CA secretory responses evoked by ACh (5.32 mM), high K＋ (56 mM, a direct membrane-depolarizer), DMPP (100ՌM) and McN-A-343 (100ՌM). Olmesartan did not affect... -
Polyphenols of Rubus coreanum Inhibit Catecholamine Secretion from the Perfused Adrenal Medulla of SHRs
Byung-SikYu, Duck-MiNa, Mi-YoungKang, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.6 17 517-526 (10 pages)
The present study was attempted to investigate whether polyphenolic compounds isolated from wine, which is brewed from Rubus coreanum Miquel (PCRC), may affect the release of catecholamines (CA) from the isolated perfused adrenal medulla of the spontaneously hypertensive rats (SHRs), and to establish its mechanism of action. PCRC (20∼180Ռg/ml) perfused into an adrenal vein for 90 min relatively dose-dependently inhibited the CA secretory responses to ACh (5.32 mM), high K＋ (56 mM), DMPP... -
Effects of Losartan on Catecholamine Release in the Isolated Rat Adrenal Gland
Hae-JeongNoh, Yoon-SungKang, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.4 10 327-335 (9 pages)
The aim of this study was to determine whether losartan, an angiotensin II (Ang II) type 1 (AT1) receptor could influence the CA release from the isolated perfused model of the rat adrenal medulla. Losartan (5∼50</SUB>ՌM) perfused into an adrenal vein for 90 min produced dose- and time-dependent inhibition of the CA secretory responses evoked by ACh (5.32 mM), high K＋ (56 mM, a direct membrane depolarizer), DMPP (100ՌM) and McN-A-343 (100ՌM). Losartan failed to affect... -
Provinol Inhibits Catecholamine Secretion from the Rat Adrenal Medulla
Jung-HeeLee, Yu-SeungSeo, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 14 229-239 (11 pages)
The aim of the present study was to examine the effect of provinol, which is a mixture of polyphenolic compounds from red wine, on the secretion of catecholamines (CA) from isolated perfused rat adrenal medulla, and to elucidate its mechanism of action. Provinol (0.3∼3Ռg/ml) perfused into an adrenal vein for 90 min dose- and time-dependently inhibited the CA secretory responses evoked by ACh (5.32 mM), high K＋ (a direct membrane-depolarizer, 56 mM), DMPP (a selective neuronal nicotinic... -
Electrophysiological Characterization of AMPA and NMDA Receptors in Rat Dorsal Striatum
SeungHyunJeun, HyeongSeokCho, KiJungKim, QingZhongLi, Ki-WugSung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 11 209-214 (6 pages)
The striatum receives glutamatergic afferents from the cortex and thalamus, and these synaptic transmissions are mediated byՁ-amino-3-hydroxy-5-methyl-4-isoxazolepropionate (AMPA) and N-methyl- D-aspartate (NMDA) receptors. The purpose of this study was to characterize glutamate receptors by analyzing NMDA/AMPA ratio and rectification of AMPA and NMDA excitatory postsynaptic currents (EPSCs) using a whole-cell voltage-clamp method in the dorsal striatum. Receptor antagonists were used to... -
Forskolin Changes the Relationship between Cytosolic Ca2＋ and Contraction in Guinea Pig Ileum
KoonHeeHan, GapJinCheon, DongSooYeon, SeongChunKwon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 8 189-194 (6 pages)
This study was designed to clarify the mechanism of the inhibitory effect of forskolin on contraction, cytosolic Ca2＋ level ([Ca2＋]i), and Ca2＋ sensitivity in guinea pig ileum. Forskolin (0.1 nM∼10ՌM) inhibited high K＋ (25 mM and 40 mM)- or histamine (3ՌM)-evoked contractions in a concentration- dependent manner. Histamine-evoked contractions were more sensitive to forskolin than high K＋- evoked contractions. Spontaneous changes in [Ca2＋]i and contractions were inhibited by... -
Alterations in Membrane Transport Function and Cell Viability Induced by ATP Depletion in Primary Cultured Rabbit Renal Proximal Tubular Cells
SungJuLee, ChaeHwaKwon, YongKeunKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.1 3 15-22 (8 pages)
exclusion, respectively. ATP depletion resulted in a decrease in Na＋-dependent phosphate uptake and cell viability in a time-dependent manner. ATP depletion inhibited Na＋-dependent phosphate uptake in cells, when treated with 2 mM ouabain, a Na＋ pump-specific inhibitor, suggesting that ATP depletion impairs membrane transport functional integrity. Alterations in Na＋-dependent phosphate uptake and cell viability induced by ATP depletion were prevented by the hydrogen peroxide scavenger such a... -
Forskolin Enhances Synaptic Transmission in Rat Dorsal Striatum through NMDA Receptors and PKA in Different Phases
HyeongSeokCho, HyunHoLee, SeJoonChoi, KiJungKim, SeungHyunJeun, Qing-ZhongLi, Ki-WugSung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.6 2 293-298 (6 pages)
The effect of forskolin on corticostriatal synaptic transmission was examined by recording excitatory postsynaptic currents (EPSCs) in rat brain slices using the whole-cell voltage-clamp technique. Forskolin produced a dose-dependent increase of corticostriatal EPSCs (1, 3, 10, and 30ՌM) immediately after its treatment, and the increase at 10 and 30ՌM was maintained even after its washout. When the brain slices were pre-treated with <FONT SIZE=2>(DL)-2-amino-5-phosphonovaleric... -
PKC-Independent Stimulation of Cardiac Na+/Ca2+ Exchanger by Staurosporine
TongMookKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.5 7 259-266 (8 pages)
[Ca2+]i transients by reverse mode of cardiac Na+/Ca2+ exchanger (NCX1) were recorded in fura-2 loaded BHK cells with stable expression of NCX1. Repeated stimulation of reverse NCX1 produced a long-lasting decrease of Ca2+ transients ('rundown'). Rundown of NCX1 was independent of membrane PIP2 depletion. Although the activation of protein kinase C (PKC) was observed during the Ca2+ transients, neither a selective PKC inhibitor (calphostin C) nor a PKC activator (PMA) changed the degrees of... -
Resveratrol Inhibits Nicotinic Stimulation-Evoked Catecholamine Release from the Adrenal Medulla
Seong-ChangWoo, Gwang-MoonNa, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.4 5 155-164 (10 pages)
Resveratrol has been known to possess various potent cardiovascular effects in animal, but there is little information on its functional effect on the secretion of catecholamines (CA) from the perfused model of the adrenal medulla. Therefore, the aim of the present study was to determine the effect of resveratrol on the CA secretion from the isolated perfused model of the normotensive rat adrenal gland, and to elucidate its mechanism of action. Resveratrol (10∼100ՌM) during perfusion into... -
Influence of Ketamine on Catecholamine Secretion in the Perfused Rat Adrenal Medulla
Young-YeobKo, Yong-HoonJeong, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.3 3 101-110 (10 pages)
The aim of the present study was to examine the effects of ketamine, a dissociative anesthetics, on secretion of catecholamines (CA) secretion evoked by cholinergic stimulation from the perfused model of the isolated rat adrenal gland, and to establish its mechanism of action, and to compare ketamine effect with that of thiopental sodium, which is one of intravenous barbiturate anesthetics. Ketamine (30∼300ՌM), perfused into an adrenal vein for 60 min, dose- and time-dependently inhibited...
