1.A case of ateriosclerotic aneurysm of the deep femoral artery
Chang Soon CHO ; Sang Oh LEE ; Byoung Yoon RYU ; Hong Ki KIM ; Chang Sig CHOI
Journal of the Korean Society for Vascular Surgery 1991;7(1):7-11
No abstract available.
Aneurysm
;
Femoral Artery
2.Clinical analysis of intestinal obstruction.
Sang Oh LEE ; Dong Kun KIM ; Young Joo LEE ; Byoung Yoon RYU ; Hong Ki KIM ; Chang Sig CHOI
Journal of the Korean Surgical Society 1991;41(4):449-457
No abstract available.
Intestinal Obstruction*
3.Mesenteric cysts: collective review of 31 cases.
Dong Kun KIM ; Sang Oh LEE ; Byoung Yoon RYU ; Young Joo LEE ; Min Chul LEE ; Hong Ki KIM ; Chang Sig CHOI
Journal of the Korean Surgical Society 1991;41(4):458-466
No abstract available.
Mesenteric Cyst*
4.Effects of a Silkworm Extract on Dopamine and Monoamine Oxidase-B Activity in an MPTP-induced Parkinsons Disease Model.
Young Kook KANG ; Hong Sig OH ; Young Ho CHO ; Young Jin KIM ; Yong Gu HAN ; Sang Ho NAM
Laboratory Animal Research 2010;26(3):287-292
The protective efficacy of a silkworm extract (SE) on N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced Parkinsonism and its possible mechanisms were studied in C57BL/6 mice. Mice were administrated intraperitoneally with SE (20 mg/kg/day) for 15 days and MPTP (10 mg/kg/day) was administrated subcutaneously into the mice for the first 6 consecutive days 1 hour before SE treatment. All animals were sacrificed 24 hours after the last SE treatment. Then the parameters related to general toxicity and neurobiochemical markers, such as the dopamine level and the activities of monoamine oxidase (MAO)-B, were measured in various regions of the brain. Treatment of mice with SE effectively attenuated the MPTP-induced decline of striatal dopamine level. MAO-B activity in SE-pretreated mice was inhibited in whole brain, cerebellum and substantia nigra. These results suggest that SE plays an effective role in attenuating MPTP-induced neurotoxicity in animal model. These neuroprotective effects of SE are likely the result from the inhibitory effect on MAO-B activity in mouse brain.
1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine
;
Animals
;
Bombyx
;
Brain
;
Cerebellum
;
Dopamine
;
Mice
;
Models, Animal
;
Monoamine Oxidase
;
Neuroprotective Agents
;
Parkinsonian Disorders
;
Substantia Nigra
5.Effects of a Silkworm Extract on Dopamine and Monoamine Oxidase-B Activity in an MPTP-induced Parkinsons Disease Model.
Young Kook KANG ; Hong Sig OH ; Young Ho CHO ; Young Jin KIM ; Yong Gu HAN ; Sang Ho NAM
Laboratory Animal Research 2010;26(3):287-292
The protective efficacy of a silkworm extract (SE) on N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced Parkinsonism and its possible mechanisms were studied in C57BL/6 mice. Mice were administrated intraperitoneally with SE (20 mg/kg/day) for 15 days and MPTP (10 mg/kg/day) was administrated subcutaneously into the mice for the first 6 consecutive days 1 hour before SE treatment. All animals were sacrificed 24 hours after the last SE treatment. Then the parameters related to general toxicity and neurobiochemical markers, such as the dopamine level and the activities of monoamine oxidase (MAO)-B, were measured in various regions of the brain. Treatment of mice with SE effectively attenuated the MPTP-induced decline of striatal dopamine level. MAO-B activity in SE-pretreated mice was inhibited in whole brain, cerebellum and substantia nigra. These results suggest that SE plays an effective role in attenuating MPTP-induced neurotoxicity in animal model. These neuroprotective effects of SE are likely the result from the inhibitory effect on MAO-B activity in mouse brain.
1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine
;
Animals
;
Bombyx
;
Brain
;
Cerebellum
;
Dopamine
;
Mice
;
Models, Animal
;
Monoamine Oxidase
;
Neuroprotective Agents
;
Parkinsonian Disorders
;
Substantia Nigra
6.Primary Pelvic Peritoneal Yolk Sac Tumor in the Post-Pubertal Female: a Case Report with Literature Review
Myojeong KIM ; Eun Ji LEE ; Jiyoung HWANG ; Seong Sook HONG ; Yun Woo CHANG ; Eunsun OH ; Bo Da NAM ; Inho CHOI ; Jeong Sig KIM
Investigative Magnetic Resonance Imaging 2019;23(4):367-373
Yolk sac tumors are rare malignant germ cell neoplasms that usually arise from the gonads. Extragonadal yolk sac tumors (EGYSTs) frequently occur in the mediastinum in post-pubertal females. EGYSTs in the pelvis are extremely rare, and to date, only thirteen cases have been reported in the English literature. Among them, the primary EGYST of the pelvic peritoneum in post-pubertal females has only been reported in ten cases. The present case describes a 26-year-old female diagnosed with primary peritoneal yolk sac tumor located in the rectouterine pouch. We report clinical and tumor imaging features, including ultrasound, computed tomography (CT), magnetic resonance images (MRI), positron emission tomography-computed tomography (PET-CT), and present a review of the literature.
Adult
;
Douglas' Pouch
;
Electrons
;
Endodermal Sinus Tumor
;
Female
;
Gonads
;
Humans
;
Magnetic Resonance Imaging
;
Mediastinum
;
Neoplasms, Germ Cell and Embryonal
;
Pelvis
;
Peritoneum
;
Ultrasonography
;
Yolk Sac
7.Human adjuvant disease manifesting as SLE.
Ja Hun JUNG ; Sung Soo JUNG ; Hee Sig MUN ; Yong Ho SONG ; Young Jung CHO ; Kwang Taek OH ; Tae Hwan KIM ; Jae Bum JUN ; In Hong LEE ; Sang Cheol BAE ; Dae Hyun YOO ; Seong Yoon KIM
Korean Journal of Medicine 1998;54(2):246-252
Human adjuvant disease means the autoimmune disease or autoimmune disease like syndrome developed after plastic surgery using foreign body implantation. After first report of HAD by Miyoshi at 1964, a number of cases have been reported especially from Japan. Silicone has been known as biologically inert material, but a couple of side reaction and experimental data argue against such conventional idea. It is impossible to identify the exact role of implanted substance in the occurrence of autoimmune disease, but there are a few indirect evidences for adjuvant effect of silicone. The spectrum of HAD are as follows: unclassifiable connective disease like syndrome, rheumatoid arthritis, SLE, polymyositis, adult Still's disease, ITP, Hashimoto's thyroiditis, etc. We experienced two cases of HAD manifesting as SLE who had been injected with silicone fluid with for augmentation mammoplasty and report this with a review of the literature.
Adult
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Arthritis, Rheumatoid
;
Autoimmune Diseases
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Female
;
Foreign Bodies
;
Humans*
;
Japan
;
Mammaplasty
;
Polymyositis
;
Silicones
;
Surgery, Plastic
;
Thyroid Gland
;
Thyroiditis
8.Preoperative Clinical Factors for Diagnosis of Incidental Prostate Cancer in the Era of Tissue-Ablative Surgery for Benign Prostatic Hyperplasia: A Korean Multi-Center Review.
Changhee YOO ; Cheol Young OH ; Se Joong KIM ; Sun Il KIM ; Young Sig KIM ; Jong Yeon PARK ; Do Hwan SEONG ; Yun Seob SONG ; Won Jae YANG ; Hyun Chul CHUNG ; In Rae CHO ; Sung Yong CHO ; Sang Hyeon CHEON ; Sungjoon HONG ; Jin Seon CHO
Korean Journal of Urology 2012;53(6):391-395
PURPOSE: To identify potential predictive factors of incidental prostate cancer (IPca) in patients considering tissue-ablation treatment for benign prostatic hyperplasia (BPH). MATERIALS AND METHODS: From the 11 centers, 1,613 men who underwent transurethral resection of the prostate (TURP) or open prostatectomy were included. Before surgery, prostate biopsy was performed in all patients with prostate-specific antigen (PSA) > or =4.0 ng/ml or with abnormal digital rectal examination (DRE) findings. The patients with prostate cancer preoperatively or with PSA >20 ng/ml were excluded. As predictive factors of IPca, age, body mass index, PSA, DRE, and transrectal ultrasonography (TRUS) findings, including total prostate volume (TPV), transition zone volume (TZV), and the presence of hypoechoic lesions, were reviewed. PSA density (PSAD) and PSAD in the transition zone (PSAD-TZV) were calculated. RESULTS: IPca was diagnosed in 78 patients (4.8%). DRE findings, PSA, and TZV were independent predictive factors in the multivariate analysis. In the receiver operating characteristic curve analysis of PSA, PSAD, and PSAD-TZV, the area under the curve (AUC) was the largest for PSAD-TZV (AUC, 0.685). CONCLUSIONS: IPca was detected in 4.8% of the population studied. In addition to DRE findings, the combination of TZV and PSA can be useful predictive factors of IPca in patients considering tissue-ablation treatment as well as TURP.
Biopsy
;
Body Mass Index
;
Cyanoacrylates
;
Digital Rectal Examination
;
Humans
;
Male
;
Multivariate Analysis
;
Prostate
;
Prostate-Specific Antigen
;
Prostatectomy
;
Prostatic Hyperplasia
;
Prostatic Neoplasms
;
ROC Curve
;
Transurethral Resection of Prostate
9.Cut-Off Value and Factors Associated with a False Positive D-Dimer Result for Venous Thromboembolism in Koreans.
Man Yong HONG ; Changkun LEE ; Sang Yong YOO ; Dae Hee SHIN ; Sang Sig CHEONG ; Jang Hoon KWON ; Woo Sung JANG ; Seung Jin YOO ; Kwang Hoon OH
Korean Journal of Medicine 2013;84(3):372-378
BACKGROUND/AIMS: The D-dimer value is a simple blood test used to evaluate venous thromboembolism (VTE). However, due to its low specificity, another test is needed for a definite diagnosis, such as a radiographic test. We evaluate the factors associated with a false positive D-dimer test and propose a new cut-off value for detecting VTE more effectively in Koreans. METHODS: This was a retrospective, observational study. From January 2009 to December 2009, 2,047 patients (988 men, 63 +/- 15 years) had the D-dimer value checked to evaluate VTE. The main outcome of interest was a positive D-dimer test. Odds ratio and 95% confidence intervals were determined using logistic regression analysis. The new D-dimer cut-off was evaluated using receiver operating characteristics (ROC) curves. RESULTS: The result was positive in 1,093 patients (53%), for a false positive percentage for VTE of 95% and a false negative percentage for VTE of 1%. Significant false positive predictors for a positive D-dimer were increasing age, trauma, postoperative, acute infection, tuberculosis, stroke, malignancy, chronic renal failure, acute coronary syndrome, heart failure, and lung disease. The discriminative value of the D-dimer test was assessed using ROC curve analysis. A D-dimer value of 0.68 mg/L on admission was the best cut-off value for predicting the development of VTE with a sensitivity of 95% and specificity of 57%. CONCLUSIONS: Many factors affect the D-dimer value and we must consider these factors before using the D-dimer value to evaluate VTE. A D-dimer value of 0.68 mg/L appears to be a good cut-off value for evaluating VTE more effectively in Koreans.
Acute Coronary Syndrome
;
False Positive Reactions
;
Fibrin Fibrinogen Degradation Products
;
Heart Failure
;
Hematologic Tests
;
Humans
;
Kidney Failure, Chronic
;
Logistic Models
;
Lung Diseases
;
Male
;
Odds Ratio
;
Retrospective Studies
;
ROC Curve
;
Sensitivity and Specificity
;
Stroke
;
Tuberculosis
;
Venous Thromboembolism
10.Prediction of Gestational Age at Birth using an Artificial Neural Networks in Singleton Preterm Birth
Jee Yun LEE ; Soo Jung JO ; Eun Jin JUNG ; Kwang Sig LEE ; Seung Woo KIM ; Ho Yeon KIM ; Geum Joon CHO ; Soon Cheol HONG ; Min Jeong OH ; Hai Joong KIM ; Ki Hoon AHN
Journal of the Korean Society of Maternal and Child Health 2018;22(3):151-161
PURPOSE: The objective of the present study was to predict the gestational age at preterm birth using artificial neural networks for singleton pregnancy. METHODS: Artificial neural networks (ANNs) were used as a tool for the prediction of gestational age at birth. ANNs trained using obstetrical data of 125 cases, including 56 preterm and 69 non-preterm deliveries. Using a 36-variable obstetrical input set, gestational weeks at delivery were predicted by 89 cases of training sets, 18 cases of validating sets, and 18 cases of testing sets (total: 125 cases). After training, we validated the model by another 12 cases containing data of preterm deliveries. RESULTS: To define the accuracy of the developed model, we confirmed the correlation coefficient (R) and mean square error of the model. For validating sets, the correlation coefficient was 0.839, but R of testing sets was 0.892, and R of total 125 cases was 0.959. The neural networks were well trained, and the model predictions were relatively good. Furthermore, the model was validated with another dataset of 12 cases, and the correlation coefficient was 0.709. The error days were 11.58±13.73. CONCLUSION: In the present study, we trained the ANNs and developed the predictive model for gestational age at delivery. Although the prediction for gestational age at birth in singleton preterm birth was feasible, further studies with larger data, including detailed risk variables of preterm birth and other obstetrical outcomes, are needed.
Dataset
;
Gestational Age
;
Parturition
;
Pregnancy
;
Premature Birth