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Involvement of spinal muscarinic and serotonergic receptors in the anti-allodynic effect of electroacupuncture in rats with oxaliplatin-induced neuropathic pain
JiHwanLee, DonghyunGo, WoojinKim, GiseogLee, HyojeongBae, FuShiQuan, SunKwangKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.4 10 407-414 (8 pages)
a significant anti-allodynic effect, which was stronger at ST36. The analgesic effect of EA at ST36 was blocked by intraperitoneal injection of muscarinic acetylcholine receptor antagonist (atropine, 1 mg/kg), but not by nicotinic (mecamylamine, 2 mg/kg) receptor antagonist. Furthermore, intrathecal administration of M2(methoctramine, 10μg) and M3 (4-DAMP, 10μg) receptor antagonist, but not M1 (pirenzepine, 10μg) receptor antagonist, blocked the effect. Also, spinal administration of 5-HT3... -
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)
It was attempted to clarify the participation of K+-channels in the post-receptor mechanisms of the muscarinic and A1-adenosine receptor- mediated control of acetylcholine (ACh) release in the present study. Slices from the rat hippocampus were equilibrated with [3H]choline and the release of the labelled products was evoked by electrical stimulation (3 Hz, 5 V/cm, 2 ms, rectangular pulses), and the influence of various agents on the evoked tritium-outflow was investigated. Oxotremorine (Oxo,... -
Enhanced Coupling of M1 Muscarinic Receptors to Activation of Phospholipase C upon Mutation of a Transposed Amino Acid Triplet Repeat
Seok-YongLee, Ki-WugSung, Ok-NyuKim, Sang-BokLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1997, Vol.1 No.1 3 19-25 (7 pages)
alterations in the rate of receptor desensitization or sequestration. The observed larger response to carbachol at mutant M1 receptors was also not due to an artifact resulting from selection of CHO cells which express higher levels of G-proteins or phospholipase C. Our data suggest that although the LYTTYL sequence in M1 muscarinic receptors is not involved in determining receptor pharmacology, mutation of the sequence enhanced the coupling of M1 receptors to the stimulation of phospholipase C. -
Effects of Site-Mutagenesis of an Amino Acid Triplet Repeat atM1 and M2 Muscarinic Receptors on Receptor Function
이석용(Seok-Yong Lee), 이상복(Sang-Bok Lee) 대한약리학회 대한약리학잡지 12 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 3호 3 311-322 (12 pages)
in the M2 receptor did not alter its coupling to inhibition of adenylate cyclase, but slightly enhanced its coupling to stimulation of phosphoinositide (PI) hydrolysis. Our data suggest that the LYTTYL/LYTLYT sequence differences between M1 and M2 muscarinic receptors are not important for specifying ligand binding and coupling of various subtypes of muscarinic receptors to different cellular signaling pathways although they might play a role in the modulation of muscarinic reseptor coupling to... -
Behavioral Sensitization and M1 Muscarinic Acetylcholine Receptor mRNA Expression in Methamphetamine-Administered Mice
Kim. Kyung-In, Cho. Jae-Han, Park. Hyun-Jung, Lee. Seok-Yong, Jang. Choon-Gon 한국응용약물학회 The journal of applied pharmacology : the official journal of the Korean Society of Applied Pharmaco 7 Pages
한국응용약물학회 The journal of applied pharmacology : the official journal of the Korean Society of Applied Pharmaco 2004, Vol.12 No.2 101-107 (7 pages)
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Characteristics of 5-Hydroxytryptamine Receptors Involved in Contraction of Feline Ileal Longitudinal Smooth Muscle
YiYiWang, SunYoungPark, KyungHoonOh, YoungsilMin, Yun-JeongLee, Seok-YongLee, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.5 3 267-272 (6 pages)
concentration-dependent contractions. The 5-HT-induced contraction was enhanced by the 5HT2 receptor antagonist ketanserin and the 5-HT3 receptor antagonist ondansetron but was inhibited by the 5-HT1 receptor antagonist methysergide and 5-HT4 receptor antagonist GR113808. These results indicate that 5-HT1 and 5-HT4 receptors may mediate the contraction of the 5-HT-induced response and 5-HT2 and 5-HT3 receptors may mediate 5-HT-induced relaxation in feline ileal longitudinal smooth muscles. -
Functional Expression of P2Y Receptors in WERI-Rb1 Retinoblastoma Cells
Na-HyunKim, Kyu-SangPark, JoonHyungSohn, Byung-IlYeh, ChangMannKo, InDeokKong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.1 9 61-65 (5 pages)
P2Y receptors are metabotropic G-protein-coupled receptors, which are involved in many important biologic functions in the central nervous system including retina. Subtypes of P2Y receptors in retinal tissue vary according to the species and the cell types. We examined the molecular and pharmacologic profiles of P2Y purinoceptors in retinoblastoma cell, which has not been identified yet. To achieve this goal, we used Ca2＋ imaging technique and western blot analysis in WERI-Rb-1 cell, a human... -
P2X and P2Y Receptors Mediate Contraction Induced by Electrical Field Stimulation in Feline Esophageal Smooth Muscle
YoungRaeCho, HyeonSoonJang, WonKim, SunYoungPark, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.5 10 311-316 (6 pages)
M) also potentiated EFS-induced contractions in a dose-dependent manner. Ecto-ATPase activator apyrase (5 and 10 U/ml) reduced EFS-induced contractions. Inversely, 6-N,N-diethyl-D-Ղ,Ճ- dibromomethylene 5'-triphosphate triammonium (ARL 67156, 10−4 M) increased EFS-induced contraction. These data suggest that endogenous ATP plays a role in EFS-induced contractions which are mediated through both P2X-receptors and P2Y-receptors stimulation in cat esophageal smooth muscle. -
Regulation of Adenosine-activated GIRK Channels by Gq-coupled Receptors in Mouse Atrial Myocytes
HanaCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.3 5 145-150 (6 pages)
protein-coupled receptors (GqPCRs). We previously found that GIRK channels activated by acetylcholine, a muscarinic M2 acetylcholine receptor agonist, are inhibited by GqPCRs in a receptor-specific manner. However, it is not known whether GIRK channels activated by Ado signaling are also regulated by GqPCRs. Presently, this was investigated in mouse atrial myocytes using the patch clamp technique. GIRK channels were activated by 100ՌM Ado. When Ado was repetitively applied at intervals of... -
Heat Acclimatization in Hot Summer for Ten Weeks Suppress the Sensitivity of Sweating in Response to Iontophoretically-administered Acetylcholine
Jeong-BeomLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.6 10 349-356 (8 pages)
To determine the peripheral mechanisms involved in thermal sweating during the hot summers in July before acclimatization and after acclimatization in September, we evaluated the sweating response of healthy subjects (n=10) to acetylcholine (ACh), a primary neurotransmitter involved in peripheral sudomotor sensitivity. The quantitative sudomotor axon reflex test (QSART) measures sympathetic C fiber function after iontophoresed ACh evokes a measurable reliable sweat response. The QSART, at 2 mA... -
Roles of Dopaminergic D1 and D2 Receptors in Catecholamine Release from the Rat Adrenal Medulla
YoungJooBaek, YooSeongSeo, DongYoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 12 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.1 3 13-24 (12 pages)
of cholinergic (both nicotinic and muscarinic) receptors and the membrane depolarization from the isolated perfused rat adrenal gland without affecting the basal release, respectively, but both R(+)-SCH23390 and S(-)-raclopride facilitate the CA release evoked by them. It seems likely that the inhibitory effects of SKF81297 and R-(-)-TNPA are mediated by the activation of D1-like and D2-like dopaminergic receptors located on the rat adrenomedullary chromaffin cells, respectively, whereas the... -
Acetylcholine Induces Hyperpolarization Mediated by Activation of K(Ca) Channels in Cultured Chick Myoblasts
DoyunLee, JaeheeHan, Jae-YongPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.1 6 37-44 (8 pages)
by KCa channels provides driving force for Ca2 influx through the stretch-activated channels into the cells. Here, we showed that acetylcholine (ACh) also hyperpolarized the membrane of cultured chick myoblasts, suggesting that nicotinic acetylcholine receptor (nAChR) may be another pathway for Ca2 influx. Under cell-attatched patch configuration, ACh increased the open probability of KCa channels from 0.007 to 0.055 only when extracellular Ca2 was present. Nicotine, a nAChR... -
Mechanism of Acetylcholine-induced Endothelium-dependent Relaxation in the Rabbit Carotid Artery by M3-receptor Activation
Yong-JinSong, Seong-ChunKwon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.6 4 313-318 (6 pages)
of acetylcholine (ACh)- induced endothelium-dependent relaxation in arteries precontracted with high K (70 mM). For this, we simultaneously measured both muscle tension and cytosolic free Ca2 concentration ([Ca2]i), using fura-2, in endothelium-intact, rabbit carotid arterial strips. In the artery with endothelium, high K increased both [Ca2]i and muscle tension whereas ACh (10μM) significantly relaxed the muscle and increased [Ca2]i. In the presence of... -
Effects of NMDA, AMPA and Kainate on the Release of Acetylcholine in Rat Hippocampal and Striatal Slices
DoKyungKim, SeoulLee, KyuYongJung, Jong-KeunKim, BongKyuChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.6 2 301-306 (6 pages)
This study examined the effects of N-methyl-D-aspartate (NMDA), α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) and kainate on basal and electrically-evoked release of acetylcholine (ACh) from the rat hippocampal and striatal slices which were preincubated with [3H]choline. Unexpectedly, the basal and evoked ACh release were not affected at all by the treatment with NMDA (3∼100μM), AMPA (1∼100μM) or kainate (1∼100μM) in hippocampal slices. However, in striatal slices, under... -
Characterization of Acetylcholine-induced Currents in Male Rat Pelvic Ganglion Neurons
Joong-HyunPark, Kyu-SangPark, Seung-KyuCha, Keon-IlLee, Min-JungKim, Jong-YeonPark, InDeokKong, Joong-WooLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.4 8 219-226 (8 pages)
by acetylcholine (ACh). Until now, however, the properties of ACh-induced currents and its receptors in pelvic ganglia have not clearly been elucidated. In the present study, biophysical characteristics and molecular nature of nicotinic acetylcholine receptors (nAChRs) were studied in sympathetic and parasympathetic major pelvic ganglion (MPG) neurons. MPG neurons isolated from male rat were enzymatically dissociated, and ionic currents were recorded by using the whole cell variant patch clamp... -
Presynaptic Mechanism Underlying Regulation of Transmitter Release by G Protein Coupled Receptors
TomoyukiTakahashi, YoshinaoKajikawa, MasahiroKimura, NaotoSaitoh, TetsuhiroTsujimoto 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.2 1 69-76 (8 pages)
G protein coupled receptors (GPCRs) are expressed in the presynaptic terminals of central and peripheral synapses and play regulatory roles in transmitter release. The patch-clamp whole-cell recording technique, applied to the calyx of Held presynaptic terminal in brainstem slices of rodents, has made it possible to directly examine intracellular mechanisms underlying the GPCR-mediated presynaptic inhibition. At the calyx of Held, bath-application of agonists for GPCRs such as GABAB receptors,... -
Reduction of Muscarinic K+ Channel Activity by Transferrin in Ischemic Rat Atrial Myocytes
KyeongTaePark, DawonKang, JaeheeHan, Jae-YongPark, Chang-GiHur, Seong-GeunHong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.6 7 333-339 (7 pages)
It has been demonstrated that an unidentified cytosolic factor(s) reduces KACh channel function. Therefore, this study attempted to elucidate the cytosolic factor. Fresh cytosol isolated from normal heart (FC) depressed the KACh channel activity, but cytosol isolated from the ischemic hearts (IC) did not modulate the channel function. Electrophorectic analysis revealed that a protein of ∼80 kDa was markedly reduced or even lost in IC. By using peptide sequencing analysis and Western blot, this... -
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 antagonists,... -
Modulation of ATP-Induced Activation of the Muscarinic K+ Channel Activity by Protein Kinase C
Yang-MiKim, Hong-KiPark, Jae-HeeHan, Choon-OkPark, Seong-GeunHong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.6 11 743-753 (11 pages)
The atrial acetylcholine-activated K (KACh) channel is gated by the pertussis toxin-sensitive inhibitory G (GK) protein. Earlier studies revealed that ATP alone can activate the KACh channel via transphosphorylation mediated by nucleoside-diphosphate kinase (NDPK) in atrial cells of rabbit and guinea pig. This channel can be activated by various agonists and also modulated its function by phosphorylation. ATP-induced KACh channel activation (AIKA) was maintained in the presence of the... -
흰쥐 해마에서 Acetylcholine 유리에 미치는 Adenosine 및 Magnesium의 영향
최봉규(Bong Kyu Choi), 윤영복(Young Bok Yoon) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1993, 제 29권 제 2호 2 175-182 (8 pages)
흰쥐 해마 (hippocampus)에서 acetylcholine(ACh) 유리에 미치는 adenosine 및 이에 미치는 magnesium의 역할에 관한 지견을 얻고자하여 [3H]-choline으로 평형시킨 해마 slice를 사용하여 [3H]-ACh 유리에 미치는 여러가지 약물들의 영향을 관찰하였다. Adenosine *0.3 ~ 100μM)은 전기자극 (3 Hz, 5 Vcm-1, 2 ms, rectangular pulses)에 의한 [3H]-ACh 유리를 용량 의존적으로 감소시켰다. A1-adenosine 수용체 차단제인 8-cyclopentyl-1, 3-dipropylxanthine (DPCPX, 1-10μM)은 용량 의존적으로 [3H]-ACh 유리를 증가시켰으며,... -
흰쥐 해마에서 Acetylcholine 유리에 미치는 N6-Cyclopentyladenosine 및 Forskolin의 영향
최봉규(Bong Kyu Choi), 박희만(Hie Man Park), 강연욱(Yeon Wook Kang), 국영종(Young Johng Kook) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1992, 제 28권 제 2호 2 129-136 (8 pages)
흰쥐 해마(hippocampus)에서 acetylcholine(Ach) 유리에 미치는 A1-adenosine 수용체의 역할과 post-receptor 기전에 있어서 adenylate cyclase 계의 관여여부에 관한 지견을 얻고자 하여 [3H]-choline으로 평형시킨 해마 slice를 사용하여 [3H]-ACh 유리에 미치는 여러가지 약물들의 영향을 관찰하였다. A1-adenosine 수용체 흥분제인 N6-cyclopentyladenosine(CPA, 0.1 ~ 10μM)은 전기자극(3Hz, 5 Vcm-1, 2 ms, rectangular pulses)에 의한 [3H]-ACh 유리를 용량 의존적으로 감소시켰다. A1-adenosine 수용체 차단제인... -
가토 해마에서 Acetylcholine 유리에 미치는 Oxotremorine 및 Forskolin의 영향
최봉규(Bong Kyu Choi), 김종순(Chong Suhn Kim), 윤영복(Young Bok Yoon), 국영종(Young Johng Kook) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1991, 제 27권 제 2호 1 89-98 (10 pages)
가토 해마(hippocampus)에서 acetylcholine(ACh) 유리에 미치는 cAMP의 역할에 관한 지견을 얻고자하여 [3H]-choline으로 평형시킨 해마 slice 및 시냅토솜(synaptosome)을 사용하여 [3H]-ACh 유리에 미치는 여러가지 약물들의 영향을 관찰하였다. Adenylate cyclase 활성화제인 forskolin(0.1 ~ 30μM)은 전기 및 고농도 K+ 자극에 의한 [3H]-ACh 유리를 용량 의존적으로 증가시켰으며, dbcAMP 또한 ACh 유리를 강화시켰다. Muscarine성 흥분제인 oxotremorine(0.1 ~ 30μM)은 전기 및 K+ 자극에 의한 [3H]-ACh 유리 효과를 용량... -
Time-course changes of hippocalcin expression in the mouse hippocampus following pilocarpine-induced status epilepticus
Hee-Soo Choi, Choong-Hyun Lee* 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2016, 제 17권 제 2호 2 137-144 (8 pages)
Hippocalcin participates in the maintenance of neuronal calcium homeostasis. In the present study, we examined the time-course changes of neuronal degeneration and hippocalcin protein level in the mouse hippocampus following pilocarpine-induced status epilepticus (SE). Marked neuronal degeneration was observed in the hippocampus after SE in a time-dependent manner, although neuronal degeneration differed according to the hippocampal subregions. Almost no hippocalcin immunoreactivity was detected... -
Effects of mosapride on motility of the small intestine and caecum in normal horses after jejunocaecostomy
Kouichi Okamura, Naoki Sasaki*, Takuya Kikuchi, Aya Murata, Inhyung Lee, Haruo Yamada, Hisashi Inokuma 대한수의학회 Journal of Veterinary Science 4 Pages
대한수의학회 Journal of Veterinary Science 2009, 제 10권 제 2호 10 157-160 (4 pages)
The purpose of the present study was to evaluate the prokinetic effects of mosapride with non-invasive assessment of myoelectrical activity in the small intestine and caecum of healthy horses after jejunocaecostomy. Six horses underwent celiotomy and jejunocaecostomy, and were treated with mosapride (treated group) at 1.5 mg/kg per osos once daily for 5 days after surgery. The other six horses did not receive treatment and were used as controls (non-treated group). The electrointestinography... -
Mechanism of UV light-induced photorelaxation in isolated rat aorta
Joo-heon Kim, Yonggeun Hong, Cheol-soo Shim 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2000, 제 1권 제 2호 4 81-86 (6 pages)
Isolated rat thoracic aorta which is pharmacologically precontracted by phenylephrine induces photorelaxation when exposed to long wave length UV-light. The aim of the present study was to characterize the mechanism of UV-light induced by photorelaxation in the rat aorta. 1. UV light relaxed both endothelium-intact and -denuded rat aortic rings contracted by phenylephrine. The magnitude of relaxation on UV light was dependent on the exposure time and slightly greatly in endothelium-denuded rings... -
Tricyclic antidepressant amitriptyline inhibits 5-hydroxytryptamine 3 receptor currents in NCB-20 cells
Yong Soo Park, Seok Ho Myeong, In-Beom Kim, Ki-Wug Sung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2018, Vol.22 No.5 12 585-595 (11 pages)
receptor therapeutic potentials. Using a whole-cell voltage clamp method, we recorded the currents of the 5-HT3 receptor when 5-HT was applied alone or co-applied with amitriptyline in cultured NCB-20 neuroblastoma cells known to express 5-HT3 receptors. To elucidate the mechanism of amitriptyline, we simulated the 5-HT3 receptor currents using Berkeley Madonna？？ software and calculated the rate constants of the agonist binding and receptor transition steps. The 5-HT3 receptor currents were... -
The change of signaling pathway on the electrical stimulated contraction in streptozotocin-induced bladder dysfunction of rats
Jong Soo Han, Young Sil Min, Gil Hyung Kim, Sang-hyun Chae, Yoonjin Nam, Jaehwi Lee, Seok-Yong Lee, Uy Dong Sohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2018, Vol.22 No.5 11 577-584 (8 pages)
(muscarinic receptor antagonist), U73122 (phospholipase C inhibitor), DPCPX (adenosine A1 receptor antagonist), udenafil (PDE5 inhibitor), prazosin (a1-receptor antagonist), verapamil (calcium channel blocker), and chelerythrine (protein kinase C inhibitor) were used to pretreat bladder smooth muscles. It was found that the contractility of bladder smooth muscles from DM rats was lower than that of normal rats. In addition, there were significant differences in percent change of contractility... -
Participation of COX-1 and COX-2 in the contractile effect of phenylephrine in prepubescent and old rats
GustavoGuevara-Balcazar, IsraelRamirez-Sanchez, ElviaMera-Jimenez, IvanRubio-Gayosso, MariaEugeniaAguilar-Najera, MariaC.Castillo-Her 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.4 6 407-413 (7 pages)
and a lower participation of the same in old rats. Contrarily, there seems to be a higher participation of prostanoids in the contractile response of the coronary artery of older than pre-pubescent rats. Considering that the changes in the expression of COX-2 were similar for the three age groups and the two tissues tested, and that expression of COX-1 is apparently greater in older rats, COX-1 and COX-2 may lose functionality in relation to their corresponding receptors during aging in rats. -
Neurogenic pathways in remote ischemic preconditioning induced cardioprotection: Evidences and possible mechanisms
AmritpalSinghAulakh, PuneetKaurRhawa, NirmalSingh, AmteshwarSinghJaggi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.2 1 145-152 (8 pages)
Remote ischemic preconditioning (RIPC) is an intrinsic phenomenon whereby 3~4 consecutive ischemia-reperfusion cycles to a remote tissue (noncardiac) increases the tolerance of the myocardium to sustained ischemiareperfusion induced injury. Remote ischemic preconditioning induces the local release of chemical mediators which activate the sensory nerve endings to convey signals to the brain. The latter consequently stimulates the efferent nerve endings innervating the myocardium to induce... -
Acepromazine inhibits hERG potassium ion channels expressed in human embryonic kidney 293 cells
YoungShinJoo, HongJoonLee, Jin-SungChoi, Ki-WugSung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.1 9 75-82 (8 pages)
The effects of acepromazine on human ether-à-go-go-related gene (hERG) potassium channels were investigated using whole-cell voltage-clamp technique in human embryonic kidney (HEK293) cells transfected with hERG. The hERG currents were recorded with or without acepromazine, and the steady-state and peak tail currents were analyzed for the evaluating the drug effects. Acepromazine inhibited the hERG currents in a concentration-dependent manner with an IC50 value of 1.5 μM and Hill... -
Dehydroevodiamine·HCl enhances cognitive function in memory-impaired rat models
KiYoungShin, KaYoungKim, Yoo-HunSuh 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.1 7 55-64 (10 pages)
memory and learning impairment that is related to changes in acetylcholine and abnormal β-amyloid (Aβ) deposition in the brain. In the present study, we investigated the effects of dehydroevodiamine·HCl (DHED) on cognitive improvement and the related mechanism in memory-impaired rat models, namely, a scopolamine-induced amnesia model and a Aβ1-42-infused model. The cognitive effects of DHED were measured using a water maze test and a passive avoidance test in the memory-impaired rat models.... -
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)
Interestingly, LPA (0.3~3 μM, an LPA receptor agonist) also dose-dependently enhanced the CA secretion from the adrenal medulla, but this facilitatory effect of LPA was greatly inhibited in the presence of Ki 14625 (10 μM). Moreover, acetylcholine (AC)-evoked CA secretion was greatly potentiated during the perfusion of gintonin (3 μg/ml). Taken together, these results demonstrate the first evidence that gintonin increases the CA secretion from the perfused rat adrenal medulla in a... -
Seasonal acclimation in sudomotor function evaluated by QSART in healthy humans
YoungOhShin, Jeong-BeomLee, Jeong-HoKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.5 7 499-505 (7 pages)
axon reflex testing (QSART) is a classic test of routine postganglionic sudomotor function. We investigated sudomotor function by QSART after summer (July 2012) and winter (January 2013) seasonal acclimation (SA) in the Republic of Korea. QSART with acetylcholine (ACh) iontophoresis were performed to determine directly activated (DIR) and axon reflex-mediated (AXR1, 2) sweating rate. Onset time of axon reflex, activated sweat gland density (ASGD), activated sweat gland output (ASGO), tympanic an... -
Effects of analgesics and antidepressants on TREK-2 and TRESK currents
HyunPark, Eun-JinKim, JaeheeHan, JongwooHan, DawonKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.4 7 379-385 (7 pages)
TWIK-related K+ channel-2 (TREK-2) and TWIK-related spinal cord K+ (TRESK) channel are members of two-pore domain K+ channel family. They are well expressed and help to set the resting membrane potential in sensory neurons. Modulation of TREK-2 and TRESK channels are involved in the pathogenesis of pain, and specific activators of TREK-2 and TRESK may be beneficial for the treatment of pain symptoms. However, the effect of commonly used analgesics on TREK-2 and TRESK channels are not known.... -
The Inhibitory Mechanism of Gentamicin on Electrical Field Stimulation Response in Rat Bladder Smooth Muscle
ChangHoMin, YiYiWang, JinhyungBae, JungHoonHan, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.5 11 473-478 (6 pages)
To see the inhibitory mechanism of gentamicin in response to electrical field stimulation (EFS) using the rat bladder smooth muscle, atropine or guanethidine was treated but had no effect. Methylsergide, a non-selective 5-HT1, 5-HT2 receptor antagonist was also treated but had on effect. Kinase inhibitors, such as chelerythrine (PKC inhibitor), ML-9 (MLCK inhibitor), or Y27632 (rho kinase inhibitor) were pretreated before gentamicin treatment, but did not have effect. For U73122, a phospholipase... -
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...
