전체 선택해제
총 59건 검색
본문검색 결과만 보기
-
Wide Spectrum of Inhibitory Effects of Sertraline on Cardiac Ion Channels
Hyang-AeLee, Ki-SukKim, Sung-AeHyun, Sung-GurlPark, SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.5 6 327-332 (6 pages)
Sertraline is a commonly used antidepressant of the selective serotonin reuptake inhibitors (SSRIs) class. In these experiments, we have used the whole cell patch clamp technique to examine the effects of sertraline on the major cardiac ion channels expressed in HEK293 cells and the native voltage-gated Ca2＋ channels in rat ventricular myocytes. According to the results, sertraline is a potent blocker of cardiac K＋ channels, such as hERG, IKs and IK1. The rank order of inhibitory potency was... -
High K＋-Induced Relaxation by Nitric Oxide in Human Gastric Fundus
DaeHoonKim, YoungChulKim, WoongChoi, Hyo-YoungYun, RohyunSung, HunSikKim, HeonKim, RaYoungYoo, Seon-MeePark6, SeiJinYun6, Young-JinSong, We 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.5 2 297-303 (7 pages)
This study was designed to elucidate high K＋-induced relaxation in the human gastric fundus. Circular smooth muscle from the human gastric fundus greater curvature showed stretch-dependent high K＋ (50 mM)-induced contractions. However, longitudinal smooth muscle produced stretch-dependent high K＋-induced relaxation. We investigated several relaxation mechanisms to understand the reason for the discrepancy. Protein kinase inhibitors such as KT 5823 (1 ՌM) and KT 5720 (1 ՌM) which... -
Nitric Oxide-mediated Relaxation by High K＋ in Human Gastric Longitudinal Smooth Muscle
YoungChulKim, WoongChoi, Hyo-YoungYun, RohyunSung, RaYoungYoo, Seon-MeePark, SeiJinYun, Mi-JungKim, Young-JinSong, Wen-XieXu, SangJinLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.6 12 405-414 (10 pages)
This study was designed to elucidate high-K＋ induced response of circular and longitudinal smooth muscle from human gastric corpus using isometric contraction. Contraction from circular and longitudinal muscle stripes of gastric corpus greater curvature and lesser curvature were compared. Circular smooth muscle from corpus greater curvature showed high K＋ (50 mM)-induced tonic contraction. On the contrary, however, longitudinal smooth muscle strips showed high K＋ (50 mM)-induced sustained... -
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... -
Gender-Related Differences in a Process of the Age-Dependent Alterations of the Elements in Monkey Sino-Atrial Node
HiroyasuSatoh, SetsukoTohno, TakeshiMinami, TakaoOishi, MotoharuHayashi, YoshiyukiTohno 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.5 1 249-256 (8 pages)
Gender differences in the trace elements of monkey sino-atrial (SA) node were investigated in a process of age-dependent alterations. Sixty hearts from Japanese and rhesus monkeys (30 male and 30 female) used were aged ranging from 1-day- to 30-year-old. The elements were analyzed using an inductively coupled plasma-atomic emission spectrometer (ICP-AES). Advancing age decreased all the trace elements. Ca, P, S and Mg significantly decreased. The correlation coefficients of Ca and P were... -
Diclofenac, a Non-steroidal Anti-inflammatory Drug, Inhibits L-type Ca2＋ Channels in Neonatal Rat Ventricular Cardiomyocytes
OlegV.Yarishkin, EunMiHwang, DonggyuKim, JaeChealYoo, SangSooKang, DeokRyoungKim, Jae-Hee-JungShin, Hye-JooChung, Ho-SangJeong, DawonKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.6 5 437-442 (6 pages)
A non-steroidal anti-inflammatory drug (NSAID) has many adverse effects including cardiovascular (CV) risk. Diclofenac among the nonselective NSAIDs has the highest CV risk such as congestive heart failure, which resulted commonly from the impaired cardiac pumping due to a disrupted excitation- contraction (E-C) coupling. We investigated the effects of diclofenac on the L-type calcium channels which are essential to the E-C coupling at the level of single ventricular myocytes isolated from... -
Multiple Residues in the P-Region and M2 of Murine Kir 2.1 Regulate Blockage by External Ba2＋
YoungMeeLee, GarethA.Thompson, IanAshmole, MarkLeyl, InsukSo, PeterR.Stanfield 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.1 10 61-69 (9 pages)
We have examined the effects of certain mutations of the selectivity filter and of the membrane helix M2 on Ba2＋ blockage of the inward rectifier potassium channel, Kir 2.1. We expressed mutant and wild type murine Kir 2.1 in Chinese hamster ovary (CHO) cells and used the whole cell patch-clamp technique to record K＋ currents in the absence and presence of externally applied Ba2＋. Wild type Kir2.1 was blocked by externally applied Ba2＋ in a voltage and concentration dependent manner. Mutants... -
Modeling of Arrhythmogenic Automaticity Induced by Stretch in Rat Atrial Myocytes
JaeBoumYoum, ChaeHunLeem, YinHuaZhang, NariKim, JinHan, YungE.Earm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.5 8 267-274 (8 pages)
Since first discovered in chick skeletal muscles, stretch-activated channels (SACs) have been proposed as a probable mechano-transducer of the mechanical stimulus at the cellular level. Channel properties have been studied in both the single-channel and the whole-cell level. There is growing evidence to indicate that major stretch-induced changes in electrical activity are mediated by activation of these channels. We aimed to investigate the mechanism of stretch-induced automaticity by... -
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... -
Two Types of Voltage-activated Calcium Currents in Goldfish Horizontal Cells
Sun-SookPaik, Sun-HoBai, Chang-SubJung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.5 3 269-274 (6 pages)
In horizontal cells (HCs) that were freshly dissociated from goldfish retina, two types of voltage- dependent calcium currents (ICa) were recorded using a patch-clamping configuration: a transient type current and a sustained type current. The cell was held at 40 mV, and the prepulse step of 90 mV was applied before command pulse between 65 and 55 mV. The transient Ca2 current was activated by depolarization to around 50 mV from a prepulse voltage of...
