1.Effects of the Sanjoin on the Rat Brain: Focused on Serotonin, Sleeping Time, Sleep EEG and Autonomic Activity.
Hee Yeon JEONG ; Young Joon KWON ; In Joon PARK ; Joon Taek KWON ; Byung Hoon HAN ; Sung Pil LEE
Journal of the Korean Society of Biological Psychiatry 1997;4(1):54-59
OBJECTS: Sanjoin, the seeds of Zizyphus vulgaris var. spinosus has been used as the most important hypnotic agent in chinese medicine to treat insomnia. This research was performed in order to examine the effect of betulinic acid and sanjoinine-A which are components of Sanjoin. METHOD: Sleeping time, sleep recordings of EEG, serum serotonin level, and locomotor activity were measured in rats which received betulinic acid and sanjoinine-A as sleep induction material extracted from Sanjoin. RESULTS: 1) Groups received betulinic acid, sanjoinine-A, and lorazepam showed increased sleep time than control group with saline. 2) Groups with betulinic acid, sanjoinine-A, lorazepam and saline recorded beta-wave in sleep recording of EEG. In there was no significant difference among all groups. 3) No significant difference in serum serotonin level among all groups was found. 4) In autonomic activity testing, groups of betulinic acid, sanjoinine-A, and lorazepam showed significantly more decreased in activity than saline group. In comparison of groups of betulinic acid and sanjoinine-A with a group of lorazepam, there was no significant difference. CONCLUSION: These results suggests that betulinic acid and sanjoinine-A have the sedative effect like lorazepam rather than sleep effect.
Animals
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Asian Continental Ancestry Group
;
Brain*
;
Electroencephalography*
;
Humans
;
Hypnotics and Sedatives
;
Lorazepam
;
Motor Activity
;
Rats*
;
Serotonin*
;
Sleep Initiation and Maintenance Disorders
;
Ziziphus
3.The Analysis of Methylenetetrahydrofolate Reductase Mutation in Recurrent Spontaneous Abortion Associated with Hyperhomocysteinemia.
Yoong Sung NAM ; Jong Soon CHOI ; Kwon Soo HA ; Zee Won LEE ; Do Yeon OH
Korean Journal of Fertility and Sterility 1999;26(3):441-446
OBJECTIVE : To analyze the methylenetetrahydrofolate reductase (MTHFR) mutation in recurrent spontaneous abortion associated with hyperhomocysteinemia. MATERIAL AND METHOD: The blood Sample of habitual aborter with high fasting homocysteine level was tested by PCR-RFLP method. RESULTS: The patient was found to be a homozygosity for MTHFR gene mutation that was confirmed by the finding which is consistent with the mutation at the nucleotide 677 C to T, Corresponding to Ala to Val. CONCLUSIONS: Hyperhomocysteinemia due to MTHFR mutation is a cause of recurrent spontaneous abortion. Therefore, the MTHFR mutation should be examined in the workup of recurrent spontaneous abortion showing hyperhomocysteinemia.
Abortion, Spontaneous*
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Fasting
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Female
;
Homocysteine
;
Humans
;
Hyperhomocysteinemia*
;
Methylenetetrahydrofolate Reductase (NADPH2)*
;
Pregnancy
4.A Case of Letterer: Siwe Disease.
Gun Yeon NA ; Sung Kwon CHOI ; Jae Bok JUN ; Sang Lip CHUNG
Korean Journal of Dermatology 1987;25(6):837-842
A 5-month-old male infantshowed greasy sealy papules on the scalp, dirty scaly papules on the trunk and scaly petechial papules on both the palms and soles since birth. When admitted to the hospital, the patient exhibited lymphadenopathy, hepatomegaly, abdominal distension, mild fever and skin eruption. The biopsy specimens from the skin and lymph node showed an infiltrate composed almost entirely of histiocytic cells with irregularly shaped nuclei and abundant, well demarcated cytoplasm. The histiocytic cells of the infiltrate were proved as Langerhans cells by electron microscopic examination and S-100 protein study. He was treated with methotrexate 30mg/m twice a week and prednisolone 40mg/m daily. Initially skin lesions and general condition were improved, but the patient expired. due to septicemia after 3 months.
Biopsy
;
Cytoplasm
;
Fever
;
Hepatomegaly
;
Humans
;
Infant
;
Langerhans Cells
;
Lymph Nodes
;
Lymphatic Diseases
;
Male
;
Methotrexate
;
Parturition
;
Prednisolone
;
S100 Proteins
;
Scalp
;
Sepsis
;
Skin
5.A case of combined hyperlipoproteinemia.
Young Bae KWON ; Sung Hee IHM ; Moon Ki CHOI ; Byung Tae KIM ; Yeon Bok JANG ; Sung Woo PARK
Journal of Korean Society of Endocrinology 1991;6(2):191-195
No abstract available.
Hyperlipoproteinemias*
6.Histopathologic Findings of Chorioretinal Adhesion After Photocoagulation of the Thretinal Break.
Sahng Yeon KIM ; Hak Sung CHUNG ; Oh Woong KWON ; Sung Chul LEE
Journal of the Korean Ophthalmological Society 1991;32(2):167-173
Adult albino rabbits were used in this study. The retina was treated with laser photocoagulation around the retinal break. The histopathologic findings were evaluated with light and electron microscopes to determine how quickly chorioretinal adhesion was produced after photocoagulation. Adhesion between the rod and cone layer and the pigment epithelium appeared within 1 hour after photocoagulation, probably due to direct burn effect of the laser. A scar tissue appeared in the chorioretinal lesion 5 days after photocoagulation, derived from the proteinaceous coagulum and accompanying fibrosis.
Adult
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Burns
;
Cicatrix
;
Epithelium
;
Fibrosis
;
Humans
;
Light Coagulation*
;
Rabbits
;
Retina
;
Retinal Perforations
7.Comparison of color stability, mechanical and chemical properties according to temporary crown resin type
Song Yi YANG ; Ji Yeon KWON ; Ji Su NO ; So Yeon PARK ; Ha Eun PARK ; Eun Ji BAEK ; Su Yeon IM ; Jae Sung KWON
Korean Journal of Dental Materials 2019;46(1):11-20
Objective of this study was to compare the color stability, mechanical and chemical properties of three different types of temporary crown resins. Commercially available powder-liquid (Group PL), light-cured (Group LC) and auto-mix syringe (Group AM) types' temporary crown resins were used as experimental groups for each of the evaluation. All the test groups were evaluated after 1 day and 7 days of immersion in various staining solutions. The colors of all groups before and after storage in the staining solutions were measured by a spectrophotometer based on CIE Lab system, and the color differences (ΔE(*)) thereby calculated. Micro hardness test was performed before water storage and aging after 7 days at 37 ℃. In addition, flexural strength, water sorption and solubility tests were performed according to international standard, ISO 10477. All experimental groups showed significant color change in staining solutions when compared to those stored in the control solution (distilled water) (p<0.05). Group PL showed the least color change among the three groups followed by Group AM (p<0.05). This tendency was observed after 7 days of immersion. In terms of the micro hardness test, Group PL showed the highest value among the three groups followed by Group AM (p<0.05). Additionally, the flexural strength decreased in the following order: AM > PL > LC (p<0.05). Water sorption and solubility increased in the following order: AM < PL < LC (p<0.05). The results of this study would provide useful information when choosing temporary crown resin types in various clinical situations.
Aging
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Crowns
;
Hardness Tests
;
Immersion
;
Solubility
;
Syringes
;
Water
8.Effect of nicotinamide on early graft failure following intraportal islet transplantation.
Da Yeon JUNG ; Jae Berm PARK ; Sung Yeon JOO ; Jae Won JOH ; Choon Hyuck KWON ; Ghee Young KWON ; Sung Joo KIM
Experimental & Molecular Medicine 2009;41(11):782-792
Intraportal islet transplantation (IPIT) may potentially cure Type 1 diabetes mellitus; however, graft failure in the early post-transplantation period presents a major obstacle. In this study, we tested the ability of nicotinamide to prevent early islet destruction in a syngeneic mouse model. Mice (C57BL/6) with chemically-induced diabetes received intraportal transplants of syngeneic islet tissue in various doses. Islets were cultured for 24 h in medium with or without 10 mM nicotinamide supplementation. Following IPIT, islet function was confirmed by an intraperitoneal glucose tolerance test (IPGTT) and hepatectomy. The effects of nicotinamide were evaluated by blood glucose concentration, serum monocyte chemoattractant protein-1 (MCP-1) concentration, and immunohistology at 3 h and 24 h after IPIT. Among the various islet doses, an infusion of 300 syngeneic islets treated with nicotinamide exhibited the greatest differences in glucose tolerance between recipients of treated and untreated (i.e., control) islets. One day after 300 islet equivalent (IEQ) transplantation, islets treated with nicotinamide were better granulated than the untreated islets (P = 0.01), and the recipients displayed a slight decrease in serum MCP-1 concentration, as compared to controls. After 15 days, recipients of nicotinamide-pretreated islets showed higher levels of graft function (as measured by IPGTT) than controls. The pretreatment also prolonged graft survival (> 100 days) and function; these were confirmed by partial hepatectomy, which led to the recurrence of diabetes. Pretreatment of islet grafts with nicotinamide may prevent their deterioration on the early period following IPIT in a syngeneic mouse model.
Animals
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Blood Glucose/metabolism
;
Chemokine CCL2/blood
;
Diabetes Mellitus, Experimental/blood/*therapy
;
Diabetes Mellitus, Type 1/blood/*therapy
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Glucose Tolerance Test
;
Graft Rejection
;
Graft Survival/drug effects
;
Insulin-Secreting Cells/metabolism
;
*Islets of Langerhans Transplantation
;
Mice
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Niacinamide/adverse effects/*pharmacology
;
Time Factors
;
Transplantation, Homologous
;
Vitamin B Complex/adverse effects/*pharmacology
9.A Case of Klippel-Trenaunay-Weber Syndrome Diagnosed by Antenatal Ultrasonography.
Yong Won PARK ; Jae Wook KIM ; Sung Hoon KIM ; Jae Sung CHO ; Yeon Hae LEE ; Sung Sik HAN ; Hae Kyung KWON
Korean Journal of Obstetrics and Gynecology 2000;43(6):1092-1095
Klippel-Trenaunay-Weber syndrome is a rare, sporadically occuring disorder characterized by hemihypertrophy (unilateral limb hypertrophy), varicose veins, hemangiomata and occasionally arteriovenous malformation. With the development of ultrasonography, this syndrome can be detected by antenatal sonography. We report a case of Klippel-Trenaunay-Weber syndrome that demonstrates huge mass with increased blood flow on left thigh detected by ultrasonography.
Arteriovenous Malformations
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Extremities
;
Klippel-Trenaunay-Weber Syndrome*
;
Thigh
;
Ultrasonography*
;
Varicose Veins
10.Pericardium Plug in the Repair of the Corneoscleral Fistula After Ahmed Glaucoma Valve Explantation.
Chungkwon YOO ; Sung Wook KWON ; Yong Yeon KIM
Korean Journal of Ophthalmology 2008;22(4):268-271
We report four cases in which a pericardium (Tutoplast(R)) plug was used to repair a corneoscleral fistula after Ahmed Glaucoma Valve (AGV) explantation. In four cases in which the AGV tube had been exposed, AGV explantation was performed using a pericardium (Tutoplast(R)) plug to seal the defect previously occupied by the tube. After debridement of the fistula, a piece of processed pericardium (Tutoplast(R)), measured 1 mm in width, was plugged into the fistula and secured with two interrupted 10-0 nylon sutures. To control intraocular pressure, a new AGV was implanted elsewhere in case 1, phaco-trabeculectomy was performed concurrently in case 2, cyclophotocoagulation was performed postoperatively in case 3 and anti-glaucomatous medication was added in case 4. No complication related to the fistula developed at the latest follow-up (range: 12~26 months). The pericardium (Tutoplast(R)) plug seems to be an effective method in the repair of corneoscleral fistulas resulting from explantation of glaucoma drainage implants.
Adolescent
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Corneal Diseases/etiology/*surgery
;
Device Removal/adverse effects
;
Fistula/etiology/*surgery
;
*Glaucoma Drainage Implants
;
Glaucoma, Neovascular/*surgery
;
Humans
;
Intraocular Pressure
;
Male
;
Middle Aged
;
Pericardium/*transplantation
;
*Postoperative Complications
;
Reoperation
;
Scleral Diseases/etiology/*surgery
;
Suture Techniques