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A Novel Immunomodulatory Mechanism Dependent on Acetylcholine Secreted by Human Bone Marrow-derived Mesenchymal Stem Cells

Yi TG, Cho YK, Lee HJ, Kim J, Jeon MS, Ham DS, Kim WC, Song SU

BACKGROUND AND OBJECTIVES: Mesenchymal stem cells (MSCs) are used to treat autoimmune or inflammatory diseases. Our aim was to determine the immunomodulatory mechanisms elicited by MSCs during inflammation. METHODS AND RESULTS:...
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Association between Ischemic Electrocardiographic Changes during Acetylcholine Provocation Test and Long-Term Clinical Outcomes in Patients with Vasospastic Angina

Im SI, Rha SW, Choi BG, Na JO, Choi CU, Lim HE, Kim JW, Kim EJ, Park CG, Seo HS

OBJECTIVES: Intracoronary injection of acetylcholine (Ach) has been shown to induce significant coronary artery spasm (CAS) in patients with vasospastic angina. Clinical significance and angiographic characteristics of patients with ischemic...
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Activation of acetylcholine receptor elicits intracellular Ca2+ mobilization, transient cytotoxicity, and induction of RANKL expression

Heo SJ, Kim MS

Acetylcholine receptors (AChR) including muscarinic and nicotinic AChR are widely expressed and mediate a variety of physiological cellular responses in neuronal and non-neuronal cells. Notably, a functional cholinergic system exists...
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Differential Effects of Quercetin and Quercetin Glycosides on Human α7 Nicotinic Acetylcholine Receptor-Mediated Ion Currents

Lee BH, Choi SH, Kim HJ, Jung SW, Hwang SH, Pyo MK, Rhim H, Kim HC, Kim HK, Lee SM, Nah SY

Quercetin is a flavonoid usually found in fruits and vegetables. Aside from its antioxidative effects, quercetin, like other flavonoids, has a various neuropharmacological actions. Quercetin-3-O-rhamnoside (Rham1), quercetin-3-O-rutinoside (Rutin), and quercetin-3-(2(G)-rhamnosylrutinoside...
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Inducibility of human atrial fibrillation in an in silico model reflecting local acetylcholine distribution and concentration

Hwang M, Lee HS, Pak HN, Shim EB

Vagal nerve activity has been known to play a crucial role in the induction and maintenance of atrial fibrillation (AF). However, it is unclear how the distribution and concentration of...
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Changes in Acetylcholine Receptors and Functional Characterization in Muscle by TOF Stimulation in Rat Experimental Autoimmune Myasthenia Gravis (EAMG) Model

Chon JY, Lee HJ

BACKGROUND: The aim of study is to investigate the initial functional changes of muscle in rats induced to have myasthenia gravis, experimental autoimmune myasthenia gravis (EAMG). The authors investigated the...
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Comparison of the Long-Term Prognosis between Coronary Vasospasm and Intermediate Vasoconstriction Induced by the Administration of Acetylcholine

Shin DI, Seung KB, Kim DB, Her SH, Ham JH, Seo SM, Shin WS, Kim PJ, Chang K, Baek SH, Chung WS, Kim JH, Hong SJ, Choi KB

BACKGROUND AND OBJECTIVES: The degree of coronary vasoconstriction induced by acetylcholine administeration can vary. We compared the prognosis between coronary vasospasm and intermediate vasoconstriction, which were both induced by acetylcholine...
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Acetylcholine Receptor Antibody and Clinical Features in Childhood Onset Myasthenia Gravis

Lee KH, Kim SJ, Lee JH, Lee M, Kim HS, Kim JK

  • KMID: 2329321
  • J Korean Child Neurol Soc.
  • 2005 Nov;13(2):210-219.
PURPOSE: We studied 32 children with myasthenia gravis to evaluate clinical features and outcomes. Also, we tried to compare between seropositive and seronegative juvenile myasthenia gravis, and validate the clinical...
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Acetylcholine Induces Hyperpolarization Mediated by Activation of K (Ca) Channels in Cultured Chick Myoblasts

Lee D, Han J, Park JY

  • KMID: 2285308
  • Korean J Physiol Pharmacol.
  • 2005 Feb;9(1):37-43.
Our previous report demonstrated that chick myoblasts are equipped with Ca2+-permeable stretch- activated channels and Ca2+-activated potassium channels (KCa), and that hyperpolarization-induced by KCa channels provides driving force for Ca2+...
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The Effect of Acetylcholine on the Potassium Currents and Length of Outer Hair Cell

Cho HH, Lee JK, Lee JH, Jang MJ, Huang M, Jeong HS, Cho YB, Park JS

  • KMID: 2037111
  • Korean J Otolaryngol-Head Neck Surg.
  • 2005 Feb;48(2):153-157.
BACKGROUND AND OBJECTIVES: Inner hair cells (IHCs) of the organ of Corti change the external sound stimulus into the electrical signal and transmit this signal to the auditory cortex through...
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Effects of NMDA, AMPA and Kainate on the Release of Acetylcholine in Rat Hippocampal and Striatal Slices

Kim DK, Lee S, Jung KY, Kim JK, Choi BK

  • KMID: 1611486
  • Korean J Physiol Pharmacol.
  • 2004 Dec;8(6):301-305.
This study examined the effects of N-methyl-D-aspartate (NMDA), alpha-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...
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Effects of Pine Needle Butanol Fraction on Acetylcholine (ACh) and Its Related Enzymes in Brain of Rats

Choi JH, Kim DI, Park SH, Kim NJ, Baek SJ, Kim KJ, Kim HS

  • KMID: 2269777
  • Korean J Nutr.
  • 2004 Apr;37(3):176-181.
This study was designed to investigate the effects of buthanol (BuOH) fraction of pine (Pinus densiflora Sieb et Zucc) needle on cholesterol and lipofuscin (LF) accumulations, acetylcholine (ACh) and its...
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The Role of 5-HT Receptors on the Acetylcholine Release from the Rat Striatum

Joo YH, Jung KY, Choi BK

  • KMID: 1607282
  • Korean J Psychopharmacol.
  • 2001 Jun;12(2):140-146.
The aim of this study was to investigate the role of the 5-HT receptors in acetylcholine (ACh) release from the striatum. Slices from the rat striatum and synaptosomes were incubated...
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Mechanism of L-NAME-resistant endothelium-dependent relaxation induced by acetylcholine in rabbit renal artery

Yeon DS, Ahn DS, Lee YH, Kwon SC

  • KMID: 1581025
  • Korean J Physiol Pharmacol.
  • 2000 Dec;4(6):471-477.
In the rabbit renal artery, acetylcholine (ACh, 1 nM ~ 10 micrometer) induced endothelium-dependent relaxation of arterial rings precontracted with norepinephrine (NE, 1 micrometer) in a dose-dependent manner. NG-nitro-L-arginine (L-NAME, 0.1 mM), an...
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Effects of Acetylcholine on the Renal Function in Renal Hypertensive Rabbits

Noh SM, Kim SH, Cho KW

  • KMID: 1989885
  • Korean J Nephrol.
  • 2000 Nov;19(6):1012-1023.
It has long been known that acetylcholine infusion resulted in increases in urine volume, urinary excretion of Na and renal plasma flow. Exact mechanism of renal effects of acetylcholine, however,...
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The Effects of Temperature Changes on the Acetylcholine and Neostigmine Induced Contraction of Rabbit Trcheal Smooth Muscle

Kwon OK, Kim CS, Ryu KH

BACKGROUND: The body temperature of a patient changes changes during general anesthesia and cholinesterase inhibitor is usually administered at the end of general anesthesia to reverse the neuromuscular blocker effect....
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Effect of Tetrahydro-9-Aminoacridine on Acetylcholine Release in the Rat Hippocampus

Joo YH, Kim SW, Rho SH, Choi BK

  • KMID: 1554204
  • Korean J Psychopharmacol.
  • 1999 Oct;10(2):173-179.
It is well known that the cholinergic innervation of hippocampal formation plays an important role in the process of memory and learning, and the deficit of this system might be...
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Calcium Sources Mediating Human Gallbladder Contraction by Acetylcholine end Cholecystokinin

Yoon YB, Rhee JC, Rhee PL, Lee JK, Kang TM, Uhm DY

  • KMID: 2084833
  • Korean J Gastroenterol.
  • 1998 Jun;31(6):799-813.
BACKGROUND AND AIMS: Gallbladder contraction regulates the bile flow during digestive period and pevents stasis of the lithogenic bile. In addition, abnormal gallbladder motility may cause recurtent biliary pain or...
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Contractile Response of the Rat Vas Deferens to Electrical Field Stimulation, Phenylephrine and Acetylcholine under Hypoxia

Suh HJ, Lee DH, Yoon JY, Park YH

  • KMID: 2290248
  • Korean J Urol.
  • 1998 Apr;39(4):316-322.
PURPOSE: The proper functioning of all smooth muscle structures depends on the ability of normal blood to deliver oxygen and nutrients to the muscles. In addition, hypoxia has been...
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Depolarizing Mechanisms of Acetylcholine in Gastric Smooth Muscle

Jun JY, Yeum CH, Moon SH, Oh HK, Park YW, Lee SJ, Yun PJ

  • KMID: 2240620
  • Korean J Gastroenterol.
  • 1998 Apr;31(4):421-431.
BACKGROUND AND AIMS: Acetylcholine which is a major excitatory neurotransmitter, depolarizes gastric smooth muscle cells. The aim of this study was to investigate the ionic mechanisms of acetylcholine-induced depolarization in...
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