1.Two cases of chorioangioma.
Hey Kyung OH ; Jun Ryul CHOI ; Tae Dong PARK ; Hum Rye PARK ; Young Suk LEE
Korean Journal of Obstetrics and Gynecology 1991;34(9):1322-1329
No abstract available.
Hemangioma*
3.Evaluation of the Biodurability of Polyurethane-Covered Stent Using a Flow Phantom.
Dong Hyun KIM ; Sung Gwon KANG ; Jung Ryul CHOI ; Ju Nam BYUN ; Young Chul KIM ; Young Moo AHN
Korean Journal of Radiology 2001;2(2):75-79
OBJECTIVE:To evaluate the biodurability of the covering material in retrievable metallic stents covered with polycarbonate polyurethane. MATERIALS AND METHODS: Using a peristaltic pump at a constant rate of 1ml/min, bile was recirculated from a reservoir through a long tube containing four stents. Each of these was removed from the system every two weeks and a radial tensile strength test and scanning electron microscopy (SEM) were performed. Each stent, removed at 2, 4, 6 and 8 weeks, was compared with a control stent not exposed to bile juice. RESULTS: Gross examination showed that stents were intact at 2 weeks, but at 4, 6 and 8 weeks cracks were observed. The size of these increased gradually in accordance with the duration of exposure, and at 8 weeks several large holes in the polyurethane membrane were evident. With regard to radial tensile strength, extension and peak load at break were 84.47% and 10.030 N/mm, 54.90% and 6.769 N/mm, 16.55% and 2.452 N/mm, 11.21% and 1.373 N/mm at 0, 2, 4 and 6 weeks, respectively. Scanning electron microscopy at 2 weeks revealed intermittent pitting and cracking, and examination at 4, 6 and 8 weeks showed that the size of these defects was gradually increasing. CONCLUSION: When the polyurethane membrane was exposed to bile, biodegradation was first observed at week two and increased gradually according to the duration of exposure.
Bile Acids and Salts/physiology
;
Biodegradation
;
Hydrogen-Ion Concentration
;
Microscopy, Electron, Scanning/*instrumentation
;
Phantoms, Imaging
;
*Polyurethanes
;
*Stents
;
Support, Non-U.S. Gov't
;
Tensile Strength
;
Time Factors
4.A case of Incontinentia Pigmenti.
Hyun Mo KOO ; Chun Dong KIM ; Byung Ryul CHOI ; Han Gu MOON ; Yong PARK ; Jin Gon JUN ; Jeong Ok HAH
Journal of the Korean Pediatric Society 1985;28(4):396-399
No abstract available.
Incontinentia Pigmenti*
5.A Case of Pyogenic Ventriculitis Complicating Obstruction of Aqueduct of Sylvius.
Dong Ryul CHOI ; Duck Si BYUN ; In Soo LEE
Journal of Korean Neurosurgical Society 1974;3(1):85-90
A rare case of ventriculitis associated with the obstruction of aqueduct of Sylvius is reported and the pertinent literature reviewed. A 24 years old male, who had been suffering from a longstanding chronic pyogenic ear disease since childhood, was admitted to our clinic in Dec. 1973 with a comatose state. Contrast radiology showed the obstructive hydrocephalus with the occluded aqueduct of Sylvius, but neither intracerebral or intracerebellar space consuming mass presented. Cerebrospinal and ventricular fluid revealed a marked growth of Escherichia Coli. So ventriculitis complicating obstruction of the aqueduct of Sylvius due to chronic suppurative otitis media and mastoiditis was diagnosed in this patient, and treated by Torkildsen's operation with proper chemotherapy and resulted in good recovery. We experienced that ventriculitis initiated from meningitis might give rise to obstruction of the aqueduct of Sylvius and it could be considered as a brain abscess superimposed raised intracranial pressure from obstructive hydrocephalus.
Brain Abscess
;
Cerebral Aqueduct*
;
Coma
;
Drug Therapy
;
Ear Diseases
;
Escherichia coli
;
Humans
;
Hydrocephalus
;
Intracranial Pressure
;
Male
;
Mastoid
;
Mastoiditis
;
Meningitis
;
Otitis Media, Suppurative
;
Young Adult
6.A Case of Pyogenic Ventriculitis Complicating Obstruction of Aqueduct of Sylvius.
Dong Ryul CHOI ; Duck Si BYUN ; In Soo LEE
Journal of Korean Neurosurgical Society 1974;3(1):85-90
A rare case of ventriculitis associated with the obstruction of aqueduct of Sylvius is reported and the pertinent literature reviewed. A 24 years old male, who had been suffering from a longstanding chronic pyogenic ear disease since childhood, was admitted to our clinic in Dec. 1973 with a comatose state. Contrast radiology showed the obstructive hydrocephalus with the occluded aqueduct of Sylvius, but neither intracerebral or intracerebellar space consuming mass presented. Cerebrospinal and ventricular fluid revealed a marked growth of Escherichia Coli. So ventriculitis complicating obstruction of the aqueduct of Sylvius due to chronic suppurative otitis media and mastoiditis was diagnosed in this patient, and treated by Torkildsen's operation with proper chemotherapy and resulted in good recovery. We experienced that ventriculitis initiated from meningitis might give rise to obstruction of the aqueduct of Sylvius and it could be considered as a brain abscess superimposed raised intracranial pressure from obstructive hydrocephalus.
Brain Abscess
;
Cerebral Aqueduct*
;
Coma
;
Drug Therapy
;
Ear Diseases
;
Escherichia coli
;
Humans
;
Hydrocephalus
;
Intracranial Pressure
;
Male
;
Mastoid
;
Mastoiditis
;
Meningitis
;
Otitis Media, Suppurative
;
Young Adult
8.The Preventive and Curative Effect of Cyanidin-3β-D-Glycoside and Its Metabolite Protocatechuic Acid Against TNBS-induced Colitis in Mice.
Se Eun JANG ; Jong Ryul CHOI ; Myung Joo HAN ; Dong Hyun KIM
Natural Product Sciences 2016;22(4):282-286
Cyanidin-3β-D-glycoside (C3G), which is widely distributed in herbal medicines and functional foods, exhibits anti-inflammatory, anti-oxidant, and anti-scratching behavioral effects. Orally administered C3G is metabolized to protocatechuic acid (PA) by gut microbiota. Therefore, we compared the anti-colitic effect of C3G to that of PA in mice with 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced colitis. Orally administered C3G and PA preventively and curatively ameliorated TNBS-induced colitis parameters, including macroscopic colitis score, colon shortening, and increase of myeloperoxidase activity. Treatment with C3G or PA also inhibited the expression of cyclooxygenase-2, inducible NO synthatase, IL-1β, IL-6, and TNF-α and the activation of NF-κB in the colon of mice with TNBS-induced colitis. Furthermore, these also inhibited lipopolysaccharide-induced NF-κB activation and TNF-α expression in peritoneal macrophages. The anti-colitic effect of PA was more effective than C3G. Orally administered PA more potently attenuate colitis than C3G by inhibiting NF-κB activation and the anti-colitic efficacy of C3G may be dependent on the biotransformation of C3G to PA by gut microbiota.
Animals
;
Biotransformation
;
Colitis*
;
Colon
;
Cyclooxygenase 2
;
Functional Food
;
Gastrointestinal Microbiome
;
Interleukin-6
;
Macrophages, Peritoneal
;
Mice*
;
Peroxidase
9.A Case of Alveolar Rhabdomyosarcoma Originating from the Chest Wall.
Chun Dong KIM ; Jeong Ok HAH ; Hyun Mo KOO ; Byung Ryul CHOI ; Han Ku MOON ; Yong Hoon PARK ; Jin Gon JUN ; Tae Sook LEE
Yeungnam University Journal of Medicine 1984;1(1):207-212
Rhabdomyosarcoma originating from the chest wall is a rare malignant tumor in children and was considered to be guarded in prognosis previously. However, recent advances in multidisciplinary treatment of rhabdomyosarcoma in children have improved the disease free survival rate. Authors report a case of alveolar rhabdomyosarcoma, stage III, originating from the chest wall who is surviving free of disease for 15 months with aggressive chemotherapy and radiotherapy.
Child
;
Disease-Free Survival
;
Drug Therapy
;
Humans
;
Prognosis
;
Radiotherapy
;
Rhabdomyosarcoma
;
Rhabdomyosarcoma, Alveolar*
;
Thoracic Wall*
;
Thorax*
10.ABO Blood Group Incompatible Living Donor Kidney Transplantation without Splenectomy.
Jin Min KONG ; Dong Ryul LEE ; Joon Heun JEONG ; Jae Ho CHOI ; Jung Oh LEE ; Wha Rhim LEE ; Byung Chang KIM
The Journal of the Korean Society for Transplantation 2009;23(1):71-76
BACKGROUND: Serious organ shortage necessitates ABO incompatible (ABOi) kidney transplantation (KT). Recent reports utilizing rituximab instead of splenectomy and tacrolimus (FK)-based triple immunosuppressants showed excellent graft outcome. METHODS AND RESULTS: Thirteen cases of ABOi living donor KT have been performed since Feb. 2007 in our center. Donor and recipient blood group was B to O (n=5), A1 to O (2), AB to B (2), AB to A1 (1), A1 to B (2) and B to A1 (1). Rituximab was given at 4 weeks before transplantation. Plasmapheresis (PP) was initiated at 7~14 days before transplantation with concurrent immunosuppressants. The number of pretransplant PP was 5.7+/-1.4. Posttransplant PP was also performed in 6 patients with higher initial titer of ABO antibody (IgG > or =256; n=2), rapidly rising antibody titer during the critical period of 2 weeks posttransplantation (n=2), or increase in serum creatinine during the critical period while awaiting pathology report of graft biopsy (n=2). Mean number of posttransplant PP in these 6 patients was 2.2+/-1.3. Median IgG anti-ABO antibody titer before precondition, at transplantation, at 2 weeks and at 6 months was 64 (8~512), 2 (1~8), 2 (1~16) and 6 (1~16), respectively. IgM titer at corresponding time point was 16 (2~128). 1 (1~1), 1 (1~2) and 1.5 (1~4), respectively. Median follow up was 8 (5~27) months. No patient or graft was lost. No patient developed acute humoral rejection. Graft function remained stable with latest serum creatinine 1.2+/-0.3 mg/dl. CONCLUSIONS: ABOi living donor KT without splenectomy can be safely performed with the use of current preconditioning and immunosuppressive regimen, and is therefore a valuable option for expanding donor pool and should be actively performed in Korea.
Antibodies, Monoclonal, Murine-Derived
;
Biopsy
;
Creatinine
;
Critical Period (Psychology)
;
Follow-Up Studies
;
Humans
;
Immunoglobulin G
;
Immunoglobulin M
;
Immunosuppressive Agents
;
Kidney
;
Kidney Transplantation
;
Living Donors
;
Plasmapheresis
;
Rituximab
;
Rejection (Psychology)
;
Splenectomy
;
Tacrolimus
;
Tissue Donors
;
Transplants