1.Characterization of Motor Evoked Potentials and their Pathways in Rats.
Sang Soo KIM ; En Shin CHOI ; Dae Moo SHIM ; Soo Uk CHAE ; Jong Hwan KIM
Journal of Korean Society of Spine Surgery 1997;4(2):203-211
No abstract available.
Animals
;
Evoked Potentials, Motor*
;
Rats*
2.Congenital lymphangiomatosis of the right lower limb.
Ji Sun WE ; Jae En SHIN ; Dong Gyu JANG ; Sae Kyung CHOI ; In Yang PARK ; Jong Chul SHIN
Korean Journal of Obstetrics and Gynecology 2010;53(7):647-651
Lymphangiomatosis is a condition of lymphatic tissue malformation with multiple or diffuse involvement of soft tissues, visceral organs. Congenital abnormalities of the lymphatic system are very rare, and reports of congenital lymphangiomatosis are even fewer. We experienced a case of congenital lymphangiomatosis detected as edema of the right limb by prenatal ultrasonography and then diagnosed by magnetic resonance imaging. We describe this case with a brief review of the literature.
Congenital Abnormalities
;
Edema
;
Extremities
;
Lower Extremity
;
Lymphatic System
;
Lymphoid Tissue
;
Magnetic Resonance Imaging
;
Ultrasonography, Prenatal
3.Intussusception due to Diverticulum of Ileocecal Area: A case report.
In Cheol KIM ; Dae Won SHIN ; Yong Jae CHOI ; En Joo BAE ; Kyeung Ja LEE ; Boung Yoon RYU ; Ji Woong CHO ; Kyung Chan CHOI
Korean Journal of Pediatric Gastroenterology and Nutrition 2001;4(1):104-107
Intussusception is a frequent cause of bowel obstruction in the first five years of life and it is one of the most common surgical emergencies in infancy and early childhood. The age of five months child was administered in Department of Pediatrics of Chunchon Sacred Heart Hospital. His main symptoms were vomiting and high fever for three days. Abdominal sonography, air reduction and abdominal computerized tomography (CT) were performed and the conclusion of these study was intussusception due to cyst mass lesion; duplication cyst, mesenteric cyst or Meckel's diverticulum. He was transferred for operation. We had performed laparotomy for reduction of the intussusception. Operative findings revealed ileocolic type of intussusception due to cystic tumor on ileocecal valve that was invaginated into the cecum, and hyperplasia of the Peyer's patch were seen. But we failed manual reduction because of the tumor in the ileocecal area. So we had performed partial resection of the ileocecum. Diverticulum of the ileum was confirmed by pathologic examination. We experienced unusual cause of the intussusception. So we report this case with a review of the literatures.
Cecum
;
Child
;
Diverticulum*
;
Emergencies
;
Fever
;
Gangwon-do
;
Heart
;
Humans
;
Hyperplasia
;
Ileocecal Valve
;
Ileum
;
Intussusception*
;
Laparotomy
;
Meckel Diverticulum
;
Mesenteric Cyst
;
Pediatrics
;
Vomiting
4.Clinical Features of Nutcracker Syndrome in the Adult.
Mi Oh ROH ; Soo Jeong CHOI ; En Suk CHOI ; Hyun Joo SHIN ; Moo Yong PARK ; Jin Kuk KIM ; Seung Duk HWANG ; Seong Jin PARK
Korean Journal of Nephrology 2007;26(2):167-173
PURPOSE: This study was designed to aid the diagnosis and predict the prognosis of Nutcracker syndrome in adults by understanding its clinical course. METHODS: We reviewed the records of 22 adult patients diagnosed with Nutcracker syndrome from August 2003 to August 2006 at Soonchunhyang university Bucheon hospital. RESULTS: The mean age was 24.0+/-12.0 years (15-59) including 13 males and 9 females. Twenty of 22 patients visited our hospital due to hematuria. Combined symptoms were flank pain (7 patients), back pain (2), abdominal pain (2), foamy urine (3), weight loss (1) and fatigue (1). Urine analysis showed hematuria (18 patients), isolated proteinuria (1), combined form (6), and normal findings (3). The mean level of proteinuria was 496.3+/-387.5 mg/d. Patients were diagnosed by doppler ultrasonography (17), abdominal computed tomography (8), and renal angiography (1). The mean ratio of the anterioposterior diameter of the left renal vein (LRV) between the hilar portion and the aortomesenteric (AM) portion was 8.25+/-3.05. The mean peak velocity ratio in the LRV between the AM and hilar portion was 6.09+/-1.47. Renal biopsy was done in the 3 patients with proteinuria >500 mg/day, and revealed membranous glomerulonephritis, IgA nephropathy and normal finding, respectively. Eight patients were followed up in 9.9+/-7.9 months. Only 1 patient showed improvement of hematuria. CONCLUSION: In the adults with Nutcracker syndrome, other symptoms beyond hematuria occurs. And when proteinuria is presented, the possibility of combined glomerulonephritis must be avoided.
Abdominal Pain
;
Adult*
;
Angiography
;
Back Pain
;
Biopsy
;
Diagnosis
;
Fatigue
;
Female
;
Flank Pain
;
Glomerulonephritis
;
Glomerulonephritis, IGA
;
Glomerulonephritis, Membranous
;
Gyeonggi-do
;
Hematuria
;
Humans
;
Male
;
Prognosis
;
Proteinuria
;
Renal Veins
;
Ultrasonography, Doppler
;
Weight Loss
5.Evaluation of component release and oxygen-inhibited layer removal on cytotoxicity of syringe-type bis-acryl composites for provisional restorations
En-Shi JIANG ; Yukyung CHOI ; Bum-Soon LIM ; Young-Seok PARK ; Shin Hye CHUNG
Korean Journal of Dental Materials 2022;49(4):173-186
This study aimed to analyze the eluted components of syringe-type bis-acryl composites and to evaluate the effect of removing the oxygen-inhibited layer on cytotoxicity. Four different bis-acryl provisional composite materials-Protemp 4 (PT), Structur 2 SC (ST), Luxatemp Automix Plus (LT), and Hexa-Temp (HT)-were evaluated. Gas chromatography/mass spectrometry was used to analyze the composite eluate after 24 h of immersion in methanol. An agar overlay test and a live/dead assay were performed on the polymerized disc-shaped specimens after 24 h. To evaluate the effect of removing the oxygen-inhibited layer, samples were prepared with a surface oxygen-inhibited layer. The surface oxygen-inhibited layer of the disc-shaped specimens was removed with alcohol only (subgroup A) or with polishing and alcohol (subgroup PA), and their cytotoxicities were compared with those of “as received” (subgroup N) specimens using the WST-1 assay. Statistical significance was assessed using analyses of variance, followed by Bonferroni multiple comparison tests (α=0.05). Different components were detected by gas chromatography/mass spectrometry analysis among the groups. The agar overlay assay confirmed severe cytotoxicity in HT, LT, and ST groups, whereas PT showed moderate cytotoxicity. The effect of removing the oxygen-inhibited layer on cell viability was significantly higher in PA than in N in all composite groups. In HT and ST, the cell viability was significantly higher in PA than in A. Syringe-type bis-acryl composites for provisional restorations may elute various components into the oral cavity, which may cause cytotoxicity in adjacent structures. The cytotoxicity of the materials is reduced by the removal of the oxygen-inhibited layer.
6.A Case of Transcatheter Alcohol Ablation of the Septum in a Patient of Hypertrophic Obstructive Cardiomyopathy.
Yeong Jun KIM ; Won Ho JUNG ; Sang Jin CHOI ; Kyung Leem CHOI ; En A KIM ; Jung Ku LEE ; Dong Kyu JIN ; Qun DANG ; Se Jin OH ; Min Soo SON ; Ji Won SON ; In Suk CHOI ; Eak Kyun SHIN
Korean Circulation Journal 1998;28(6):1025-1030
Hypertrophic obstructive cardiomyopathy (HOCM) is characterized by inappropriate myocardial hypertrophy that occurred in the absence of an obvious cause for the hypertrophy and dynamic left ventricular outflow tract obstruction, caused by asymmetrical septal hypertrophy and systolic anterior motion of the anterior mitral leaflet. The pathophysiological abnormality in HOCM is diastolic dysfunction, abnormal stiffness of the left ventricle with resultant impaired ventricular filling and impaired vasodilator reserve (perhaps related to the thickened and narrowed small intramural coronary arteries found in HOCM). During the early course of this progressive disease, treatment consists of negative inotropic drugs. Surgery has been the only therapeutic option in patients with hypertrophic cardiomyopathy who are resistant to drug treatment and sequential pacemaker therapy. We describe a novel catheter-based technique that may replace surgical myocardial reduction. The technique is interventional infarction of a portion of the interventricular septum by the infusion of alcohol into a selectively catheterized septal artery.
Arteries
;
Cardiomyopathy, Hypertrophic*
;
Catheters
;
Coronary Vessels
;
Heart Ventricles
;
Humans
;
Hypertrophy
;
Infarction
7.Anaphylaxis to Curry Powder in Childhood.
Wan Suk CHOI ; Sung Ryong HAN ; Tae Hong KIM ; Gyung Lae CHO ; Young Shin HAN ; Jin A JUNG ; En Soo JUNG ; Kang Mo AHN ; Sang Il LEE ; Ja Hyung KIM ; Ju Suk LEE
Pediatric Allergy and Respiratory Disease 2005;15(2):170-173
A 15-year old boy visited Samsung Medical Center complaining that when he ate curry and rice two months ago, he developed immediate palatal itching, generalized urticaria, headache and dyspnea. His chest radiographs were normal. He had no history of allergy, but a methacholine provocation challenge test revealed positive findings (PC20 3.62 mg/mL). Skin prick tests revealed positive findings to asparagus, house dust mites (Dp, Df), flower pollens (aster, chrysanthemum, golden rod), weed pollens (mugwort, ragweed, dandelion, short ragweed) and crude extract of curry powder. Specific IgE to Dp, Df and soy bean were positive (6.52, 31.2 and 1.91 kU/L) and total IgE was 1, 207 kU/L by the Pharmacia UniCAP- FEIA. After receiving parental consent, we performed an oral provocation test to confirm the relationship between his symptoms and curry powder. He ingested a small amount of curry powder with pure water, which was increased every 1 hour. We then measured his PEFR every 10 minutes after each subsequent curry powder ingestion. After he ate 20 gm of curry powder in one time, he exhibited profuse sweating, skin rash and dyspnea. When we treated him with epinephrine and bronchodilator, his symptoms improved. He developed the same symptoms 2 hours later, but these symptoms were brought under control by the same medication.
Adolescent
;
Ambrosia
;
Anaphylaxis*
;
Chrysanthemum
;
Dyspnea
;
Eating
;
Epinephrine
;
Exanthema
;
Flowers
;
Headache
;
Humans
;
Hypersensitivity
;
Immunoglobulin E
;
Male
;
Methacholine Chloride
;
Parental Consent
;
Peak Expiratory Flow Rate
;
Pollen
;
Pruritus
;
Pyroglyphidae
;
Radiography, Thoracic
;
Skin
;
Soybeans
;
Sweat
;
Sweating
;
Taraxacum
;
Urticaria
;
Water
8.Peripheral nerve regeneration using polyglycolic acid conduit and brain-derived neurotrophic factor gene transfected Schwann cells in rat sciatic nerve.
Won Jae CHOI ; Kang Min AHN ; En Feng GAO ; Young Min SHIN ; Yoon Tae KIM ; Soon Jeong HWANG ; Nam Yeol KIM ; Myung Jin KIM ; Seung Woo JO ; Byung Soo KIM ; Yun Hee KIM ; Soung Min KIM ; Seung Jae OH ; Sung Jun KIM ; Jeong Won JAHNG ; Jong Ho LEE
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2004;30(6):465-473
PURPOSE: The essential triad for nerve regeneration is nerve conduit, supporting cell and neurotrophic factor. In order to improve the peripheral nerve regeneration, we used polyglycolic acid(PGA) tube and brain-derived neurotrophic factor(BDNF) gene transfected Schwann cells in sciatic nerve defects of SD rat. MATERIALS AND METHODS: Nerve conduits were made with PGA sheet and outer surface was coated with poly(lactic-co-glycolic acid) for mechanical strength and control the resorption rate. The diameter of conduit was 1.8mm and the length was 17mm. Schwann cells were harvested from dorsal root ganglion(DRG) of SD rat aged 1 day. Schwann cells were cultured on the PGA sheet to test the biocompatibility adhesion of Schwann cell. Human BDNF gene was obtained from cDNA library and amplified using PCR. BDNF gene was inserted into E1 deleted region of adenovirus shuttle vector, pAACCMVpARS. BDNF-adenovirus was multiplied in 293 cells and purified. The BDNF-Adenovirus was then infected to the cultured Schwann cells. Left sciatic nerve of SD rat (250g weighing) was exposed and 14mm defects were made. After bridging the defect with PGA conduit, culture medium(MEM), Schwann cells or BDNFAdenovirus infected Schwann cells were injected into the lumen of conduit, respectively. 12 weeks after operation, gait analysis for sciatic function index, electrophysiology and histomorphometry was performed. RESULTS: Cultured Schwann cells were well adhered to PGA sheet. Sciatic index of BDNF transfected group was -53.66+/-13.43 which was the best among three groups. The threshold of compound action potential was between 800 to 1000microA in experimental groups which is about 10 times higher than normal sciatic nerve. Conduction velocity and peak voltage of action potential of BDNF group was the highest among experimental groups. The myelin thickness and axonal density of BDNF group was significantly greater than the other groups. CONCLUSION: BDNF gene transfected Schwann cells could regenerate the sciatic nerve gap(14mm) of rat successfully.
Action Potentials
;
Adenoviridae
;
Animals
;
Axons
;
Brain-Derived Neurotrophic Factor*
;
Electrophysiology
;
Gait
;
Gene Library
;
Genetic Vectors
;
Humans
;
Myelin Sheath
;
Nerve Regeneration
;
Peripheral Nerves*
;
Polyglycolic Acid*
;
Polymerase Chain Reaction
;
Rats*
;
Regeneration*
;
Schwann Cells*
;
Sciatic Nerve*
;
Spinal Nerve Roots