1.Clinical Case Conference.
Dong Ho CHOI ; Jae Min KIM ; Chang Su HAN
Journal of Korean Neuropsychiatric Association 2011;50(5):340-346
No abstract available.
2.An experimental study for calculation of cross sectional area and volume in various objects using auto-CAD(computer aided design).
Chang Ju LEE ; Won Ho CHO ; Ho Guen CHANG ; Su Jung CHOI ; Hyun Cheol YANG
The Journal of the Korean Orthopaedic Association 1991;26(6):1864-1871
No abstract available.
3.Accidentally Diagnosed Myotonic Dystrophy after Cholecystectomy.
Young Kil CHOI ; Chang Su CHOI ; Kwang Hee KIM ; Yoon Jung KIM
Journal of the Korean Surgical Society 2010;79(Suppl 1):S50-S53
Myotonic dystrophy is the most common systemic disease causing myotonia. We report the case of respiratory failure in a patient with myotonic dystrophy after laparoscopic cholecystectomy. We carried out neurologic testing, electromyography and DNA testing in this patient and electromyography in the family of the patient. Through electromyography and DNA testing, this patient was diagnosed with myotonic dystrophy type I. Myotonic dystrophy is characterized by gradual decline of muscle tone and myotonia. It is important that this disease be excluded through preoperative history taking, physical examination and family history taking.
Cholecystectomy
;
Cholecystectomy, Laparoscopic
;
DNA
;
Electromyography
;
Humans
;
Muscles
;
Myotonia
;
Myotonic Dystrophy
;
Physical Examination
;
Respiratory Insufficiency
4.A follow up study on patients with traumatic head injury.
Su Yeol KIM ; Soon Ja CHANG ; Yun Hee KIM ; Son Mi CHOI
Journal of the Korean Academy of Rehabilitation Medicine 1991;15(4):481-488
No abstract available.
Craniocerebral Trauma*
;
Follow-Up Studies*
;
Head*
;
Humans
5.The Use of Xenograft ( Lubboc(r)) for Pelvic Osteotomy in Children.
In Ho CHOI ; Tae Joon CHO ; Su Sung PARK ; Chin Youb CHUNG ; Chang Bum CHANG ; Duk Yong LEE ; Sang Rim KIM
The Journal of the Korean Orthopaedic Association 1998;33(3):550-556
The purpose of this study is to present a novel method of harvesting autogenous bone graft and to analyze the behavior of xenograft used for pelvic osteotomy in young children. Twenty hips of eighteen patients underwent pelvic osteotomies using xenograft (Lubhoc) from Sep. 1993 to Jun. 1996. In fitteen hips, we harvested autogenous bone avoiding damage to the chondroapophysis of iliac crest and t'illed the donor site with the xenograft. It supplemented the autogenous bone at the osteotomy site in eleven hips, and was used as a wedge without autogenous hone in five hips. During the followup, no growth disturbance of iliac crest was found. The xenograft incorporation was satisfactory at the graft donor sites and the osteotomy sites where it supplemented the autogenous bone, however, unsatistactory at the osteotomy sites where it was used alone. Our novel method of harvesting bone graft from young pelvis may help prevent growth disturbance of lilac crest, and Luhhoc is useful as space-filler of donor site and suppiementary to the autograft in pelvic osteotomy of young children.
Autografts
;
Child*
;
Follow-Up Studies
;
Heterografts*
;
Hip
;
Humans
;
Osteotomy*
;
Pelvis
;
Tissue Donors
;
Transplants
6.Two Cases of Ectopic Paragonimiasis Involving the Retroperitoneum and the Eqididymis.
Sung Hoon DO ; Won Jae YANG ; Young Deuk CHOI ; Hyung Ki CHOI ; Su Yeon CHANG ; Ok Hyun CHIN
Korean Journal of Urology 2000;41(5):681-684
No abstract available.
Paragonimiasis*
7.The Development of Antibody-Drug Conjugates for Urothelial Carcinoma Treatment
Da Som CHOI ; Su Jeong KANG ; In Ho CHANG ; Young Wook CHOI
Korean Journal of Urological Oncology 2021;19(1):30-39
Urothelial cancer is the seventh most common cancer among men worldwide. Bacille de Calmette-Guérin is a type of anticancer immunotherapy that has been used to treat targeted bladder cancer, but the number of patients with treatment-refractory advanced urothelial cancer, patients has been increasing recently. To overcome this, enfortumab vedotin (novel nectin-4 targeting antibody-drug conjugate) known as antibody-drug conjugate (ADC), was approved. We describe the clinical development process of ADC and the potential for future development as a bladder cancer treatment.
8.Mechanism of Apoptosis Induced by Ginkgo Biloba Extract(Egb 761) in Oral Cavity Cancer Cell Lines.
Jung Hyun CHANG ; Joo Heon YOON ; Eun Chang CHOI ; Kun Wayn LEE ; Chang Il CHO ; Kyung Su KIM
Korean Journal of Otolaryngology - Head and Neck Surgery 2006;49(12):1181-1187
BACKGROUND AND OBJECTIVES: According to our previous study Ginkgo biloba extract (EGb 761) induces inhibition of cell proliferation and apoptosis in SCC 1483 oral cavity cancer cells. On the other hand, in lipopolysaccharide-stimulated RAW 264.7 cells, activation of mitogen activated protein kinase (MAPK) is the key event in the inhibition of inflammation by EGb 761. Therefore, we have investigated whether MAPK pathway is involved in the apoptotic process by EGb 761 in oral cavity cancer cell lines or not. SUBJECTS AND METHOD: In SCC 1483 oral cavity cancer cell lines, Western blot analysis, Fluorescence-activated cell sorter (FACS) analysis, and transient transfection using MAPK-dominant negative constructs were used. RESULTS: When SCC 1483 oral cavity cancer cell lines were treated with the concentration of 250 microgram/ml EGb 761, activation of extracellular signal-regulated kinase (ERK) and apoptosis were noted. This apoptosis was inhibited by the treatment with ERK inhibitor (PD 98059). In the transiently transfected cells by MAPK/ERK kinase 1 (MEK1)-dominant negative construct, phosphorylations of ERK and p90 ribosomal S 6 protein kinase (RSK1) were inhibited which led to the inhibition of apoptosis by EGb 761. The inhibition of apoptosis was also noted in the transfected cells by RSK1 dominant negative construct and cAMP response element binding protein (CREB)-dominant negative construct. CONCLUSION: In conclusion, the apoptosis of SCC 1483 oral cavity cancer cell lines by EGb 761 is linked to the activation of ERK and it can happen via ERK MAPK/RSK1/CREB signal transduction pathway.
Apoptosis*
;
Blotting, Western
;
Cell Line*
;
Cell Proliferation
;
Cyclic AMP Response Element-Binding Protein
;
Ginkgo biloba*
;
Hand
;
Inflammation
;
Mouth Neoplasms
;
Mouth*
;
Phosphorylation
;
Phosphotransferases
;
Protein Kinases
;
Signal Transduction
;
Transfection
9.Comparison of Corneal Power Measured by Different Methods after Refractive Surgery.
Su Na LEE ; Si Hwan CHOI ; Chang Sik KIM
Journal of the Korean Ophthalmological Society 2002;43(8):1412-1417
PURPOSE: To compare the corneal power (K) measured by different methods in the patients who underwent photorefractive keratectomy (PRK) or laser in situ keratomilieusis (LASIK) METHODS: Fifty-four patients who had undergone PRK or LASIK from December 1999 to December 2000 and followed for 3 months or longer were selected for this study. The corneal power was measured by five different methods in 35 eyes(18 patients) of PRK group and in 70 eyes (36 patients) of LASIK group: calculation method (C-K), hard contact lens method (H-K), autorefractokeratometer (A-K), manual keratometer (M-K) and topography (T-K). RESULTS: Preoperative mean corneal power was 43.41+/-1.06 D in PRK group and 43.75+/-1.03 D in LASIK group. Postoperative corneal power in PRK group showed following Results: C-K, 40.94+/-1.51 D; H-K, 41.04+/-1.23 D; A-K, 41.18+/-1.29 D; M-K, 41.38+/-1.33 D; T-K, 41.67+/-1.26 D. In LASIK group, the results were: C-K, 38.64+/-2.25 D; H-K, 39.29+/-1.66 D; A-K, 39.53+/-1.61 D; M-K, 39.85+/-1.54 D; T-K, 40.36+/-1.26 D. The corneal power of calculation method was lowest in both groups. Each corneal power was not different statistically from the others in PRK group(p=0.16). However, C-K was significantly lower than A-K (p=0.02), M-K (p=0.00) or T-K (p=0.00) in LASIK group. Also, H-K or AK was lower than T-K statistically in LASIK group (p=0.00, p=0.02). CONCLUSIONS: The corneal power was lowest when measured by calculation method after refractive surgery. In LASIK group, there were statistical differences among the corneal powers by each method.
Humans
;
Keratomileusis, Laser In Situ
;
Photorefractive Keratectomy
;
Refractive Surgical Procedures*
10.Industrial Accident Compensation Insurance Benefits on Cerebrovascular and Heart Disease in Korea.
Hyeong Su KIM ; Jae Wook CHOI ; Soung Hoon CHANG ; Kun Sei LEE
Journal of Korean Medical Science 2003;18(4):483-488
The purpose of this study is to present the importance of work-related cerebrovascular and heart disease from the viewpoint of expenses. Using the insurance benefit paid for the 4,300 cases, this study estimated the burden of insurance benefits spent on work-related cerebrovascular and heart disease. The number of cases with work-related cerebrovascular and heart disease per 100,000 insured workers were 3.36 in 1995; they were increased to 13.16 in 2000. By the days of occurrence, the estimated number of cases were 1,336 in 2001 (95% CI: 1,211-1,460 cases) and 1,769 in 2005 (CI: 1,610-1,931 cases). The estimated average insurance benefits paid per person with work-related cerebrovascular and heart disease was 75-19 million won for medical care benefit and 56 million won for other benefits except medical care. By considering the increase in insurance payment and average pay, the predicted insurance benefits for work-related cerebrovascular and heart disease was 107.9 billion won for the 2001 cohort and 192.4 billion won for the 2005 cohort. From an economic perspective, the results will be used as important evidence for the prevention and management of work-related cerebrovascular and heart disease.
*Accidents
;
*Accidents, Occupational
;
Brain Diseases/epidemiology
;
Cohort Studies
;
Compensation and Redress
;
Costs and Cost Analysis
;
Heart Diseases/epidemiology
;
Human
;
*Insurance Benefits
;
Insurance Coverage
;
Korea
;
Linear Models
;
Models, Statistical
;
*Occupational Health
;
Sensitivity and Specificity
;
Time Factors
;
*Workers' Compensation