1.The Effect of Chlorhexidine on the formation of bone nodules by Periodontal ligament Cells in Vitro.
Hui Jun CHOI ; Suk JI ; Joong Ki KOOK ; Hyun Seon JANG ; Joo Cheol PARK ; Heung Joong KIM ; Chong Gwan KIM ; Byung Ock KIM
The Journal of the Korean Academy of Periodontology 2006;36(2):375-383
No abstract available.
2.A Case of Ileal Mucosa-associated Lymphoid Tissue Lymphoma Accompanied by Luminal Stricture and Arterial Spurting.
Jeung Hui PYO ; Beom Jae LEE ; Hyun Joo LEE ; Ji Won KIM ; Kyeong Jin KIM ; Jong Jae PARK ; Jae Seon KIM ; Young Tae BAK ; You Jin JANG
The Korean Journal of Gastroenterology 2013;62(6):365-369
Primary small intestinal lymphoma is relatively uncommon. Small bowel tumors are difficult to diagnose, because they are usually asymptomatic in the initial phase, and they are not easily detected by traditional methods of investigating the small intestine. This case shows a successfully detected and treated gastrointestinal bleeding from rare ileal mucosa-associated lymphoid tissue lymphoma, using double balloon endoscopy.
Aged
;
Arteries
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Capsule Endoscopy
;
Constriction, Pathologic
;
Gastrointestinal Hemorrhage
;
Humans
;
Ileal Neoplasms/*diagnosis/pathology
;
Intestinal Mucosa/pathology
;
Lymphoid Tissue/*pathology
;
Lymphoma, B-Cell, Marginal Zone/*diagnosis/pathology
;
Male
3.Potentiation of the glycine response by serotonin on the substantia gelatinosa neurons of the trigeminal subnucleus caudalis in mice
Hoang Thi Thanh NGUYEN ; Dong Hyu CHO ; Seon Hui JANG ; Seong Kyu HAN ; Soo Joung PARK
The Korean Journal of Physiology and Pharmacology 2019;23(4):271-279
The lamina II, also called the substantia gelatinosa (SG), of the trigeminal subnucleus caudalis (Vc), is thought to play an essential role in the control of orofacial nociception. Glycine and serotonin (5-hydroxytryptamine, 5-HT) are the important neurotransmitters that have the individual parts on the modulation of nociceptive transmission. However, the electrophysiological effects of 5-HT on the glycine receptors on SG neurons of the Vc have not been well studied yet. For this reason, we applied the whole-cell patch clamp technique to explore the interaction of intracellular signal transduction between 5-HT and the glycine receptors on SG neurons of the Vc in mice. In nine of 13 neurons tested (69.2%), pretreatment with 5-HT potentiated glycine-induced current (I(Gly)). Firstly, we examined with a 5-HT₁ receptor agonist (8-OH-DPAT, 5-HT(1/7) agonist, co-applied with SB-269970, 5-HT₇ antagonist) and antagonist (WAY-100635), but 5-HT₁ receptor agonist did not increase IGly and in the presence of 5-HT₁ antagonist, the potentiation of 5-HT on I(Gly) still happened. However, an agonist (α-methyl-5-HT) and antagonist (ketanserin) of the 5-HT₂ receptor mimicked and inhibited the enhancing effect of 5-HT on I(Gly) in the SG neurons, respectively. We also verified the role of the 5-HT₇ receptor by using a 5-HT₇ antagonist (SB-269970) but it also did not block the enhancement of 5-HT on I(Gly). Our study demonstrated that 5-HT facilitated I(Gly) in the SG neurons of the Vc through the 5-HT₂ receptor. The interaction between 5-HT and glycine appears to have a significant role in modulating the transmission of the nociceptive pathway.
Animals
;
Glycine
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Mice
;
Neurons
;
Neurotransmitter Agents
;
Nociception
;
Patch-Clamp Techniques
;
Receptors, Glycine
;
Serotonin
;
Signal Transduction
;
Substantia Gelatinosa
4.Inhibitory actions of borneol on the substantia gelatinosa neurons of the trigeminal subnucleus caudalis in mice
Phuong Thao Thi NGUYEN ; Seon Hui JANG ; Santosh RIJAL ; Soo Joung PARK ; Seong Kyu HAN
The Korean Journal of Physiology and Pharmacology 2020;24(5):433-440
The substantia gelatinosa (SG) of the trigeminal subnucleus caudalis(Vc) is the first relay site for the orofacial nociceptive inputs via the thin myelinatedAδ and unmyelinated C primary afferent fibers. Borneol, one of the valuable timehonoredherbal ingredients in traditional Chinese medicine, is a popular treatmentfor anxiety, anesthesia, and antinociception. However, to date, little is known asto how borneol acts on the SG neurons of the Vc. To close this gap, the whole-cellpatch-clamp technique was applied to elucidate the antinociceptive mechanismresponding for the actions of borneol on the SG neurons of the Vc in mice. In thevoltage-clamp mode, holding at –60 mV, the borneol-induced non-desensitizinginward currents were not affected by tetrodotoxin, a voltage-gated Na+ channelblocker, 6-cyano-7-nitro-quinoxaline-2,3-dione, a non-N-methyl-D-aspartate (NMDA)glutamate receptor antagonist and DL-2-amino-5-phosphonopentanoic acid, anNMDA receptor antagonist. However, borneol-induced inward currents were partiallydecreased in the presence of picrotoxin, a -aminobutyric acid (GABA)A receptorantagonist, or strychnine, a glycine receptor antagonist, and was almost suppressedin the presence of picrotoxin and strychnine. Though borneol did not show any effecton the glycine-induced inward currents, borneol enhanced GABA-mediatedresponses. Beside, borneol enhanced the GABA-induced hyperpolarization under thecurrent-clamp mode. Altogether, we suggest that borneol contributes in part towardmediating the inhibitory GABA and glycine transmission on the SG neurons of the Vcand may serve as an herbal therapeutic for orofacial pain ailments.
5.Inhibitory actions of borneol on the substantia gelatinosa neurons of the trigeminal subnucleus caudalis in mice
Phuong Thao Thi NGUYEN ; Seon Hui JANG ; Santosh RIJAL ; Soo Joung PARK ; Seong Kyu HAN
The Korean Journal of Physiology and Pharmacology 2020;24(5):433-440
The substantia gelatinosa (SG) of the trigeminal subnucleus caudalis(Vc) is the first relay site for the orofacial nociceptive inputs via the thin myelinatedAδ and unmyelinated C primary afferent fibers. Borneol, one of the valuable timehonoredherbal ingredients in traditional Chinese medicine, is a popular treatmentfor anxiety, anesthesia, and antinociception. However, to date, little is known asto how borneol acts on the SG neurons of the Vc. To close this gap, the whole-cellpatch-clamp technique was applied to elucidate the antinociceptive mechanismresponding for the actions of borneol on the SG neurons of the Vc in mice. In thevoltage-clamp mode, holding at –60 mV, the borneol-induced non-desensitizinginward currents were not affected by tetrodotoxin, a voltage-gated Na+ channelblocker, 6-cyano-7-nitro-quinoxaline-2,3-dione, a non-N-methyl-D-aspartate (NMDA)glutamate receptor antagonist and DL-2-amino-5-phosphonopentanoic acid, anNMDA receptor antagonist. However, borneol-induced inward currents were partiallydecreased in the presence of picrotoxin, a -aminobutyric acid (GABA)A receptorantagonist, or strychnine, a glycine receptor antagonist, and was almost suppressedin the presence of picrotoxin and strychnine. Though borneol did not show any effecton the glycine-induced inward currents, borneol enhanced GABA-mediatedresponses. Beside, borneol enhanced the GABA-induced hyperpolarization under thecurrent-clamp mode. Altogether, we suggest that borneol contributes in part towardmediating the inhibitory GABA and glycine transmission on the SG neurons of the Vcand may serve as an herbal therapeutic for orofacial pain ailments.
6.Botulinum toxin type A enhances the inhibitory spontaneous postsynaptic currents on the substantia gelatinosa neurons of the subnucleus caudalis in immature mice.
Seon Hui JANG ; Soo Joung PARK ; Chang Jin LEE ; Dong Kuk AHN ; Seong Kyu HAN
The Korean Journal of Physiology and Pharmacology 2018;22(5):539-546
Botulinum toxin type A (BoNT/A) has been used therapeutically for various conditions including dystonia, cerebral palsy, wrinkle, hyperhidrosis and pain control. The substantia gelatinosa (SG) neurons of the trigeminal subnucleus caudalis (Vc) receive orofacial nociceptive information from primary afferents and transmit the information to higher brain center. Although many studies have shown the analgesic effects of BoNT/A, the effects of BoNT/A at the central nervous system and the action mechanism are not well understood. Therefore, the effects of BoNT/A on the spontaneous postsynaptic currents (sPSCs) in the SG neurons were investigated. In whole cell voltage clamp mode, the frequency of sPSCs was increased in 18 (37.5%) neurons, decreased in 5 (10.4%) neurons and not affected in 25 (52.1%) of 48 neurons tested by BoNT/A (3 nM). Similar proportions of frequency variation of sPSCs were observed in 1 and 10 nM BoNT/A and no significant differences were observed in the relative mean frequencies of sPSCs among 1–10 nM BoNT/A. BoNT/A-induced frequency increase of sPSCs was not affected by pretreated tetrodotoxin (0.5 µM). In addition, the frequency of sIPSCs in the presence of CNQX (10 µM) and AP5 (20 µM) was increased in 10 (53%) neurons, decreased in 1 (5%) neuron and not affected in 8 (42%) of 19 neurons tested by BoNT/A (3 nM). These results demonstrate that BoNT/A increases the frequency of sIPSCs on SG neurons of the Vc at least partly and can provide an evidence for rapid action of BoNT/A at the central nervous system.
6-Cyano-7-nitroquinoxaline-2,3-dione
;
Animals
;
Botulinum Toxins*
;
Botulinum Toxins, Type A*
;
Brain
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Central Nervous System
;
Cerebral Palsy
;
Dystonia
;
Hyperhidrosis
;
Mice*
;
Neurons*
;
Substantia Gelatinosa*
;
Synaptic Potentials*
;
Tetrodotoxin
7.Review and latest trends of dental ceramic restorative materials
Seon-Mi BYEON ; Kyeong-Seon KIM ; Jae-Woo SHIN ; Jung-Hwan LEE ; Jeong-Hui JI ; Min-Soo BAE ; Yong-Seok JANG ; Min-Ho LEE ; Tae-Sung BAE
Korean Journal of Dental Materials 2024;51(1):1-14
Prosthodontic treatment is being performed for morphology and functional restoration due to damage and loss of teeth. As the aesthetic demands of patients increase, interest in ceramic materials with shades and translucency similar to natural teeth has increased.Recently, the manufacturing and processing technology of ceramic materials has greatly improved, and the market for dental ceramic materials is growing rapidly. The purpose of this literature review and evaluation is to provide information on the classification and properties of dental ceramic materials with excellent aesthetics and fracture resistance. In this article, it is classified as follows: I) Dental porcelain; II) Sinterable all-ceramic; III) Glass-ceramic for casting; IV) Glass-infiltrated alumina ceramic; V) Glass-ceramic ingots for heat-pressing technique; Vl) Blocks for CAD/CAM; Vll) Ceramic for CAD/3D printing. Dental ceramic materials and their restoration manufacturing methods have evolved significantly over the past decade. As a result, the manufacturing method of restorations has progressed from the layered firing technique of powdered materials or heat-pressing technique to the cutting and processing of single and multi-layer blocks using CAD/CAM technology, leading to the introduction of CAD/3D printing technology. In this manuscript, we will review the types of ceramic materials used in the fabrication of dental restorations and their advantages and disadvantages.
8.Short-term follow up of thyroid function after pediatric hematopoietic stem cell transplantation.
Seon Ju LEE ; Jae Wook LEE ; Dae Hyoung LEE ; Young Joo KWON ; Young Shil PARK ; Hui Sung HWANG ; Sun Young KIM ; Ji Kyoung PARK ; Pil Sang JANG ; Min Ho JUNG ; Nak Gyun CHUNG ; Dae Chul JEONG ; Bin CHO ; Hack Ki KIM ; Byung Churl LEE
Korean Journal of Pediatrics 2006;49(11):1211-1215
PURPOSE: In this study, we analyzed the short term changes of thyroid function, incidence and risk factors of thyroid dysfunction soon after allogeneic hematopoietic stem cell transplantation (HSCT) in children. METHODS: We enrolled 80 pediatric patients following allogeneic HSCT, at the Catholic HSCT center between January, 2004 and February, 2006. Serum TSH (thyroid stimulating hormone), total serum thyroxine and total serum triiodothyronine levels were systematically measured in 80 patients before the HSCT, and at 1 month, 6 months and 12 months after HSCT. RESULTS: Thyroid function statistically decreased at 1 month after HSCT(P < 0.001). Thyroid dysfunction at 1 month was observed in 43 (54 percent) of 80 patients, 31 (39 percent) of whom presented with euthyroid sick syndrome (ETS). Thyroid dysfunction was normalized within 1 year after HSCT. In univariate analysis, malignant disease and the presence of acute graft-versus-host disease (grade > or = II) were risk factors for ETS (P=0.04, 0.01 respectively). In multivariate analysis, we could not detect an independent risk factor for ETS (P=0.19, 0.06 respectively). CONCLUSION: The present study suggests that the incidence of thyroid dysfunction is high after allogeneic HSCT. Therefore, regular monitoring of thyroid hormone levels after HSCT is required.
Child
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Euthyroid Sick Syndromes
;
Follow-Up Studies*
;
Graft vs Host Disease
;
Hematopoietic Stem Cell Transplantation*
;
Hematopoietic Stem Cells*
;
Humans
;
Incidence
;
Multivariate Analysis
;
Risk Factors
;
Thyroid Gland*
;
Thyrotropin
;
Thyroxine
;
Triiodothyronine
9.Clinical Characteristics of Chronic Cough in Korea
Tai Joon AN ; Jin Woo KIM ; Eun Young CHOI ; Seung Hun JANG ; Hwa Young LEE ; Hye Seon KANG ; Hyeon Kyoung KOO ; Jong Min LEE ; Sung Kyung KIM ; Jong Wook SHIN ; So Young PARK ; Chin Kook RHEE ; Ji Yong MOON ; Yee Hyung KIM ; Hyun LEE ; Yong Hyun KIM ; Je Hyeong KIM ; Sang Haak LEE ; Deog Kyeom KIM ; Kwang Ha YOO ; Dong Gyu KIM ; Ki Suck JUNG ; Hui Jung KIM ; Hyoung Kyu YOON ;
Tuberculosis and Respiratory Diseases 2020;83(1):31-41
10.Clinical Characteristics of Chronic Cough in Korea
Tai Joon AN ; Jin Woo KIM ; Eun Young CHOI ; Seung Hun JANG ; Hwa Young LEE ; Hye Seon KANG ; Hyeon Kyoung KOO ; Jong Min LEE ; Sung Kyung KIM ; Jong Wook SHIN ; So Young PARK ; Chin Kook RHEE ; Ji Yong MOON ; Yee Hyung KIM ; Hyun LEE ; Yong Hyun KIM ; Je Hyeong KIM ; Sang Haak LEE ; Deog Kyeom KIM ; Kwang Ha YOO ; Dong Gyu KIM ; Ki Suck JUNG ; Hui Jung KIM ; Hyoung Kyu YOON ;
Tuberculosis and Respiratory Diseases 2020;83(1):31-41
BACKGROUND:
Chronic cough is defined as a cough lasting more than 8 weeks and socio-economic burden of chronic cough is enormous. The characteristics of chronic cough in Korea are not well understood. The Korean Academy of Tuberculosis and Respiratory Diseases (KATRD) published guidelines on cough management in 2014. The current study evaluated the clinical characteristics of chronic cough in Korea and the efficacy of the KATRD guidelines.
METHODS:
This was a multi-center, retrospective observational study conducted in Korea. The participants were over 18 years of age. They had coughs lasting more than 8 weeks. Subjects with current pulmonary diseases, smokers, ex-smokers with more than 10 pack-years or who quit within the past 1 year, pregnant women, and users of cough-inducing medications were excluded. Evaluation and management of cough followed the KATRD cough-management guidelines.
RESULTS:
Participants with chronic cough in Korea showed age in the late forties and cough duration of more than 1 year. Upper airway cough syndrome was the most common cause of cough, followed by cough-variant asthma (CVA). Gastro-esophageal reflux diseases and eosinophilic bronchitis were less frequently observed. Following the KATRD cough-management guidelines, 91.2% of the subjects improved after 4 weeks of treatment. Responders were younger, had a longer duration of cough, and an initial impression of CVA. In univariate and multivariate analyses, an initial impression of CVA was the only factor related to better treatment response.
CONCLUSION
The causes of chronic cough in Korea differed from those reported in other countries. The current Korean guidelines proved efficient for treating Korean patients with chronic cough.